UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

INVESTMENT COMPANY ACT FILE NUMBER: 811-21484

 

     
   
EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER:   Calamos Strategic Total Return Fund
   
ADDRESS OF PRINCIPAL EXECUTIVE OFFICES:  

2020 Calamos Court

Naperville, Illinois 60563-2787

   
NAME AND ADDRESS OF AGENT FOR SERVICE:  

John P. Calamos, Sr., Founder, Chairman and
Global Chief Investment Officer

Calamos Advisors LLC
2020 Calamos Court
Naperville, Illinois 60563-2787

REGISTRANT’S TELEPHONE NUMBER, INCLUDING AREA CODE: (630) 245-7200

DATE OF FISCAL YEAR END: October 31, 2021

DATE OF REPORTING PERIOD: November 1, 2020 through April 30, 2021

 

 

 

 

 

Item 1(a) - Report to Shareholders 

 

 

TIMELY INFORMATION INSIDE

Strategic Total Return Fund (CSQ)

SEMIANNUAL REPORT APRIL 30, 2021

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Experience and Foresight

Our Managed Distribution Policy

Closed-end fund investors often seek a steady stream of income. Recognizing this important need, Calamos closed-end funds adhere to a managed distribution policy in which we aim to provide consistent monthly distributions through the disbursement of the following:

Net investment income

Net realized short-term capital gains

Net realized long-term capital gains

And, if necessary, return of capital

We set distributions at levels that we believe are sustainable for the long term. The Fund’s current monthly distribution rate is $0.1025 per share. Our team focuses on delivering an attractive monthly distribution, while maintaining a long-term emphasis on risk management. The level of the Fund’s distribution can be greatly influenced by market conditions, including the interest rate environment, the individual performance of securities held by the funds, our view of retaining leverage, fund tax considerations, and regulatory requirements.

You should not draw any conclusions about the Fund’s investment performance from the amount of its distribution or from the terms of the Fund’s plan. The Fund’s Board of Trustees may amend or terminate the managed distribution policy at any time without prior notice to the Fund’s shareholders. However, at this time there are no reasonably foreseeable circumstances that might cause the termination of the Fund’s managed distribution policy.

For more information about any Calamos closed-end funds, we encourage you to contact your financial advisor or Calamos Investments at 800.582.6959 (Monday through Friday from 8:00 a.m. to 6:00 p.m., Central Time). You can also visit us at www.calamos.com.

Note: The Fund adopted a managed distribution policy on January 1, 2018.

Letter to Shareholders

John P. calamos, sr.

Founder, Chairman
and Global Chief
Investment Officer

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   1

Dear Fellow Shareholder:

Welcome to your semiannual report for the six-month period ended April 30, 2021. In this report, you will find commentary from the Calamos portfolio management team, as well as a listing of portfolio holdings, financial statements and highlights, and detailed information about the performance and positioning of the Calamos Strategic Total Return Fund (CSQ).

Throughout history, the global economy and financial markets have navigated unprecedented challenges and uncertainty, guided by human ingenuity, innovation, and forward-looking perspective. We saw this continue during the semiannual period, with many asset classes posting strong gains. Volatility has ramped up, but we believe there is additional upside for experienced, risk-conscious investors. As the global economy continues to make its way through an extraordinary period, individual security selection and active management will be extremely important, both for identifying opportunities and understanding potential risks. Our team is confident that the Fund is well positioned to capitalize on the potential we see across markets.

Market Review

The semiannual period spanned a period of significant change—including a new U.S. presidential administration and shifts in Congress, eagerly anticipated vaccine rollouts, and varying levels of economic reopening around the world. The period also saw the emergence of long-dormant inflation pressures and rising interest rates, including a near doubling of the 10-year U.S. Treasury yield. Meanwhile, the Federal Reserve and other central banks affirmed their commitments to supportive policy and fiscal stimulus continued at record levels.

Stock and convertible markets advanced at a brisk clip during the reporting period, with vaccination progress, job gains and other positive economic data, corporate earnings, fiscal stimulus and accommodative monetary policy giving market participants reasons for optimism. However, as we noted, volatility was also formidable. While many growth-oriented securities continued to post very healthy returns in absolute terms, value-oriented and cyclical sectors came back into favor as investors contemplated the strength of the economy, rising interest rates and inflation pressures. Within the fixed-income markets, high-yield securities outpaced investment-grade issues.

Letter to Shareholders

2   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

Innovative Multi-Asset Approach Supports the Search for Income

Calamos’ experience with closed-end funds dates to 2002, and we have always recognized that many investors choose closed-end funds to support the search for income. Like all our closed-end funds, CSQ is managed with the goal of providing steady (although not assured) monthly distributions. We believe our innovative approach will be an especially important differentiator given the economic and market environments we expect.

As a result of our effective active management and recent strong portfolio performance, CSQ raised its monthly distribution during the period by $0.0100 per share, representing an approximate increase of 10.8%. As a result, the Fund now pays out $0.1025 per share, constituting an annualized distribution rate of of 6.84%* of market price and 7.06% on NAV as of April 30, 2021. The distribution increase is our effort to enable you, our shareholders, to directly participate in the recent and expected performance of the portfolio.

To fully appreciate both the Fund’s attractive and competitive distribution rate and level, consider the low interest rates and limited yield opportunities in much of the marketplace. For example, as of April 30, 2021, the dividend yield of S&P 500 Index stocks averaged approximately 1.43%. The dividend yield of the ICE BofA All U.S. Convertibles Index was 1.72%. Yields also were low within the U.S. government bond market, with the 10-year U.S. Treasury yielding 1.65%. And the ICE BofA U.S. High Yield Master II Index was yielding 4.12%, all well behind CSQ’s distribution rate.

Outlook

We believe the global economic recovery will continue at a strong pace over the near term. Of course, the rate of growth will vary among regions—with the U.S. among the economies that are particularly well positioned, due to accommodative fiscal conditions and extraordinary levels of stimulus. We also see improving fundamentals in several other countries. There will be many investment opportunities through this phase of the cycle, including in the securities of companies positioned to benefit from reopening and recovery as well as innovative businesses at the forefront of established and emerging growth trends.

*Current Annualized Distribution Rate is the Fund’s most recent distribution, expressed as an annualized percentage of the Fund’s current market price per share. The Fund’s 4/30/21 distribution was $0.1025 per share. Based on our current estimates, we anticipate that approximately $0.1025 is paid from ordinary income or capital gains and that approximately $0.0000 represents a return of capital. Estimates are calculated on a tax basis rather than on a generally accepted accounting principles (GAAP) basis, but should not be used for tax-reporting purposes. Distributions are subject to re-characterization for tax purposes after the end of the fiscal year. This information is not legal or tax advice. Consult a professional regarding your specific legal or tax matters. Under the Fund’s managed distribution policy, distributions paid to common shareholders may include net investment income, net realized short-term and long-term capital gains, and return of capital. When the net investment income and net realized short-term and long-term capital gains are not sufficient, a portion of the distribution will be a return of capital. The distribution rate may vary.

Letter to Shareholders

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   3

Capitalizing on this diverse opportunity set requires long-term perspective because short-term volatility is likely to remain elevated. We are prepared for continued market rotation as the economy accelerates before ultimately settling into a new post-pandemic “normal.” We also expect fiscal policy uncertainty about the U.S. tax and regulatory environment will fuel market turbulence with the potential to also influence the longer-term course of the U.S. economic recovery.

Our team is closely monitoring inflation data and its drivers. Overall, what we have seen thus far is not surprising, given the combination of healthy consumer balance sheets, fiscal stimulus, pent-up demand and economic reopening. Also, while inflation has risen, it is still relatively low, with year-over-year changes coming off very low base effects. Indeed, today we are not witnessing the double-digit inflation increases that I remember from past decades.

Asset Allocation in a Changing World

From an asset allocation standpoint, we encourage investors to maintain broad diversification—by asset class, investment style, market capitalization, and geography. However, asset allocation is not static, and we encourage investors to consult with their investment professionals on an ongoing basis and especially during periods of rapid economic change. Your investment professional can help you determine if you should rebalance your asset allocation in response to market conditions or your unique personal circumstances.

We believe that CSQ’s multi-asset-class approach will continue to provide advantages for investors who seek income as part of a total-return approach. In addition to equities, the Fund also invests in convertibles, which blend attributes of stocks and fixed-income securities. As a result, they may be less vulnerable to rising interest rates compared with traditional bonds. Convertibles have also offered the opportunity for upside stock market participation with potentially less exposure to stock market downside. In addition, convertible issuance in 2020 was both robust in volume and varied by business sectors, thereby presenting solid investment opportunities for the portfolio. So far in 2021, the strong issuance of convertibles has continued, and we are optimistic that this favorable dynamic will prevail throughout the year.

Depending on your needs, your investment professional may recommend that you consider additional Calamos closed-end funds to help you address your search for income, capital appreciation or both. On page 5, we provide an overview of our enhanced fixed-income and total-return offerings.

Letter to Shareholders

4   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

In Closing

We believe that CSQ’s dynamic allocation and multi-asset approach is well positioned to generate capital appreciation and attractive income over the entire market cycle with its bouts of volatility and many potential opportunities.

I encourage you to visit our website, www.calamos.com, for ongoing updates about the markets and asset allocation strategies for investors seeking income, capital appreciation, or both. On behalf of all of us at Calamos Investments, I thank you for your trust. We are honored to serve you and help you achieve your asset allocation goals.

Sincerely,

John P. Calamos, Sr.

Founder, Chairman and Global Chief Investment Officer

Before investing, carefully consider a fund’s investment objectives, risks, charges and expenses. Please see the prospectus containing this and other information or call 800.582.6959. Please read the prospectus carefully. Performance data represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted.

Diversification and asset allocation do not guarantee a profit or protection against a loss. Investments in alternative strategies may not be suitable for all investors.

Returns for the six months ended April 30, 2021: The S&P 500 Index, a measure of the U.S. stock market, returned 28.85%. The ICE BofA All U.S. Convertibles Index, a measure of the U.S. convertible securities market, returned 27.33%. The ICE BofA U.S. High Yield Master II Index, consisting of below-investment-grade U.S. dollar-denominated corporate bonds that are publicly issued in the U.S. domestic and yankee bonds, returned 8.12%.

Source: Lipper, Inc and Mellon Analytical Solutions, LLC. Unmanaged index returns assume reinvestment of any and all distributions and, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index. Returns are in U.S. dollar terms.

Investments in overseas markets pose special risks, including currency fluctuation and political risks. These risks are generally intensified for investments in emerging markets. Countries, regions, and sectors mentioned are presented to illustrate countries, regions, and sectors in which a fund may invest. Fund holdings are subject to change daily. The Fund is actively managed. The information contained herein is based on internal research derived from various sources and does not purport to be statements of all material facts relating to the securities mentioned.

The information contained herein, while not guaranteed as to accuracy or completeness, has been obtained from sources we believe to be reliable. There are certain risks involved with investing in convertible securities in addition to market risk, such as call risk, dividend risk, liquidity risk and default risk, which should be carefully considered prior to investing.

Opinions are as of the publication date, subject to change and may not come to pass. Information is for informational purposes only and shouldn’t be considered investment advice or an offer to buy or sell any security in the portfolio.

The Calamos Closed-End Funds: An Overview

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   5

Enhanced Fixed-Income and Total-Return Strategies

Calamos closed-end funds draw upon decades of our pioneering experience, including a long history of opportunistically blending asset classes in an attempt to capture upside potential while seeking to manage downside risk. Our closed-end funds can be broadly grouped into two categories: enhanced fixed income and total return. The funds share a focus on producing income while offering exposure to various asset classes and sectors.

ENHANCED FIXED INCOME

Portfolios positioned to pursue high current income from income and capital gains

OBJECTIVE: U.S. ENHANCED FIXED INCOME

Calamos Convertible Opportunities and Income Fund (Ticker: CHI)

Invests in high-yield and convertible securities, primarily in U.S. markets.

Calamos Convertible and High Income Fund (Ticker: CHY)

Invests in high-yield and convertible securities, primarily in U.S. markets.

OBJECTIVE: GLOBAL ENHANCED FIXED INCOME

Calamos Global Dynamic Income Fund (Ticker: CHW)

Invests in global fixed-income securities, alternative investments and equities.

TOTAL RETURN

Portfolios positioned to seek current income, with increased emphasis on capital gains potential

OBJECTIVE: U.S. TOTAL RETURN

Calamos Strategic Total Return Fund (Ticker: CSQ)

Invests in equities and higher-yielding convertible securities and corporate bonds, primarily in U.S. markets.

Calamos Dynamic Convertible and Income Fund (Ticker: CCD)

Invests in convertibles and other fixed-income securities. To help generate income and achieve a favorable risk/reward profile, the investment team also has the flexibility to sell options.

OBJECTIVE: GLOBAL TOTAL RETURN

Calamos Global Total Return Fund (Ticker: CGO)

Invests in equities and higher-yielding convertible securities and corporate bonds, in both U.S. and non-U.S. markets.

Calamos Long/Short Equity & Dynamic Income Trust (CPZ)

Invests in a long/short equity strategy and a broad array of income-producing assets as part of a global approach.

Investment Team Discussion

6   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

TOTAL RETURN* AS OF 4/30/21

Common Shares – Inception 3/26/04

 

6 Months

1 Year

Since
Inception**

On Market Price

45.66%

71.25%

 9.97%

On NAV

35.90%

62.71%

10.06%

*Total return measures net investment income and net realized gain or loss from Fund investments, and change in net unrealized appreciation or depreciation, assuming reinvestment of income and net realized gains distributions.

**Annualized since inception.

SECTOR WEIGHTINGS

Information Technology

21.9%

Consumer Discretionary

14.4

Health Care

11.7

Financials

11.3

Communication Services

11.1

Industrials

10.5

Consumer Staples

4.5

Energy

4.3

Materials

2.6

Utilities

2.6

Real Estate

1.6

Other

0.9

Airlines

0.4

Sector Weightings are based on managed assets and may vary over time. Sector Weightings exclude any government/sovereign bonds or options on broad market indexes the Fund may hold.

STRATEGIC TOTAL RETURN FUND (CSQ)

INVESTMENT TEAM DISCUSSION

Please discuss the Fund’s strategy and role within an asset allocation.

Calamos Strategic Total Return Fund (CSQ) is a total-return-oriented offering that seeks to provide a steady stream of income paid out on a monthly basis. We invest in a diversified portfolio of equities, convertible and high-yield securities. The allocation to each asset class is dynamic and reflects our view of the economic landscape as well as the potential of individual securities. By combining these asset classes, we believe that we are well-positioned over the long term to generate capital gains as well as income. This broader range of security types also enables us to manage the risk/reward characteristics of the portfolio over full market cycles. Through this approach, we seek to offer investors an attractive monthly distribution and equity participation.

While we invest primarily in securities of U.S. issuers, we favor companies that are actively participating in globalization with geographically diversified revenue streams and global business strategies. We emphasize companies that we believe offer reliable debt servicing, respectable balance sheets, solid free cash flow and good prospects for sustainable growth—which is especially important given the economic and financial markets impacts of COVID-19.

Accordingly, we seek companies with respectable balance sheets, reliable debt servicing and good prospects for sustainable growth. While we invest primarily in securities of U.S. issuers, we favor companies with geographically diversified revenue streams and global-scale business strategies. We believe that better-capitalized companies with strong management teams and reliable cash flow will be better positioned to enter the recovery in good shape and adapt to the new business environment going forward.

How did the Fund perform over the reporting period?

The Fund returned 35.90% on a net asset value (NAV) basis and returned 45.66% on a market price basis for the semiannual period ended April 30, 2021. The S&P 500 Index returned 28.65% for the same period.

At the end of the reporting period, the Fund’s shares traded at a 3.15% premium to net asset value.

How do NAV and market price return differ?

Closed-end funds trade on exchanges, where the price of shares may be driven by factors other than the value of the underlying securities. The price of a share in the market is called market value. Market price may be influenced by factors unrelated to the performance of the Fund’s holdings, such as general market sentiment or future expectations. During periods of high market volatility, closed-end Fund prices may disproportionately underperform relative to their underlying NAVs as shareholders often source them for liquidity purposes. A fund’s NAV return measures the actual return of the individual securities in the portfolio, less fund expenses. It also measures how a manager was able to capitalize on market opportunities. Because we believe closed-end funds are best utilized long term within asset allocations, we maintain that the NAV return is the better measure of a fund’s performance. However, when managing the Fund, we strongly consider actions and policies that we believe will optimize its overall price performance and returns based on market value.

Investment Team Discussion

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   7

SINCE INCEPTION MARKET PRICE AND NAV HISTORY THROUGH 4/30/21

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. The principal value of an investment will fluctuate so that your shares, when sold, may be worth more or less than their original cost. Returns at NAV reflect the deduction of the Fund’s management fee, debt leverage costs and all other applicable fees and expenses. You can obtain performance data current to the most recent month end by visiting www.calamos.com.

Please discuss the Fund’s distributions during the semiannual period.

We employ a managed distribution policy within this Fund with the goal of providing shareholders with a consistent distribution stream. In January, the Fund announced a monthly distribution increase of $0.0100 per share, representing a raise of approximately 10.8%. As a result of this increase, the Fund was paying out $0.1025 per share at the end of the period, representing an annualized distribution rate of 6.84% of market price and 7.06% on NAV as of April 30, 2021. The distribution increase is an effort by the Advisor to have shareholders more directly participate in the recent and expected performance of the portfolio.

We believe that both the Fund’s distribution rate and level remained attractive and competitive, as low interest rates limited yield opportunities in much of the marketplace. For example, as of April 30, 2021, the dividend yield of S&P 500 Index stocks averaged approximately 1.43%. Yields also were low within the U.S. government bond market, with the 10-year U.S. Treasuries yielding 1.65%, while high-yield bonds, as represented by the ICE BofA U.S. High Yield Master II Index, yielded 4.12%.

What factors influenced performance over the reporting period?

As investors contemplated the economy’s recovery trajectory, markets were volatile, and leadership rotated from growth stocks to cyclical and value names during the period.

The stock market continued to look forward amid improved corporate earnings, fiscal stimulus, an accommodating Fed monetary policy and mostly successful vaccine rollouts. Reopening stocks led the markets, while those that benefitted most from modified social mobility last year tended to lag, as value led growth going into 2021.

Reflation and potentially inflation became the focus of much discussion, as U.S. economic data readings on employment, housing and manufacturing all indicated strong growth. At the risk of inflation, the Fed’s accommodative monetary policy and massive stimulus out of Washington, D.C. should continue to fuel economic growth in the near-term. Each of these factors contributed to strengthening consumer and business leader confidence. At the same time, economic fundamentals improved on both the labor and activity fronts.

ASSET ALLOCATION AS OF 4/30/21

Investment Team Discussion

8   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

New convertible issuance was very robust during the period and provided access to capital for many new issuers during the market dislocation throughout the pandemic. Convertible issuance has been supported by strong equity prices, elevated volatility and low-but-rising interest rates. Our expectations are that robust convertible issuance will continue through 2021, providing access to new names within multiple sectors.

For bonds during the period, new issue markets continued to trade strongly. Consistently high volumes of new debt were met with healthy demand, owing in large measure to the liquidity conditions driven by Fed and fiscal stimulus. Credit spreads, which narrowed in 2020, continued to do so in 2021, which added to positive returns for high yield bonds during the period.

That said, the Fund can invest in a range of strategies including convertible securities, equities and high-yield bonds. This enables us to participate in a myriad of opportunities on behalf of our shareholders. Given this flexibility, we were able to mitigate risks from the impact of COVID-19 on financial markets by adjusting our exposures across these multiple strategies, in both equity and fixed-income markets. During the period, our emphasis on equities, through holdings in both stocks and convertibles, was favorable to our shareholders, as these securities offered strong returns during the period on both an absolute and relative basis. Looking ahead, this flexibility should help mitigate risk across vulnerable areas of the financial markets and take advantage of opportunities that avail themselves around the globe amid economic recovery.

In terms of sectors and corresponding industries, our selection in information technology, specifically in semiconductor equipment, contributed to performance relative to the S&P 500 Index. In addition, our underweight in household products within consumer staples was helpful.

Selection in industrials (namely industrial equipment) detracted from the Fund’s performance relative to the S&P 500 Index for the period. Furthermore, our selection in financials (notably in regional banks) also lagged relative to the index.

How is the Fund positioned?

We are emphasizing investments in companies with solid cash-flow generation, solid balance sheets, and strong and proven management teams. We believe these companies will be the most likely to succeed in the post-COVID-19 business environment. Our active positioning seeks to balance short-term rebound opportunities (cyclical but oversold) with longer-term business-driven winners. Our goal is to provide the portfolio an asymmetrical risk/reward profile positioned for more equity-market upside participation than downside. In our view, longer-term outperformers include companies that can exploit trends that were in place prior to the downturn but became invaluable during the pandemic: cloud computing, virtualization, health care spending, multi-channel retailing and the localization of global supply chains.

In terms of positioning, we maintained a relatively high allocation to U.S. stocks, as well as convertibles, whose combined exposure is approximately 83% of the portfolio. We are excited about the opportunities in the convertible market as steady issuance should continue throughout the year—offering additional choices in the space. Accordingly, we have been able to take advantage attractive opportunities and establish meaningful exposure in those investments. Meanwhile, the secondary convertible market offered an attractive array of balanced convertible structures, which the strategy has employed to optimize returns.

Investment Team Discussion

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   9

The portfolio currently holds large absolute allocations in the information technology, consumer discretionary and health care sectors. We believe that these sectors should perform well as the market begins to re-engage growth, fiscal stimulus proliferates, the U.S. economy begins to reopen, and the U.S. consumer has more opportunities to access goods and services. We see more opportunities in store for health care in the wake of the global pandemic; there will be major focus on disease prevention and vaccines, given the human and economic toll of the pandemic. We also believe that businesses and individuals will remain focused on productivity enhancements in a post-COVID-19 environment, thereby stimulating demand for technology as virtual interaction becomes an established means of communication.

The average credit quality of the portfolio for rated securities is BB, which is higher than that of the Credit Suisse High Yield Index. This is typical for the Fund, as our credit process tends to guide us away from the most speculative corporate securities. That said, we recognize that opportunities are available for lower-credit securities to enhance performance. About 4% of our holdings are in CCC and below rated credits. A significant portion of our holdings are in non-rated securities, which allows us to utilize our proprietary research capabilities to select positions that we believe will offer value and optimize returns for shareholders.

Given our relatively low cost of borrowing, we believe that this environment is conducive to the prudent use of leverage as a means of enhancing total return and supporting the Fund’s distribution rate. This is particularly important as financial markets begin to recover, and the benefits of leverage can be harnessed. Our leverage was at approximately 28% at period end.

What is your outlook for the Fund?

Amid economic and financial price recovery from the consequences of COVID-19, we believe that equities continue to offer compelling risk/reward characteristics, and we are seeking companies with attractively valued fundamentals. We continue to pursue our strategic objective of participating in a significant portion of equity market upside while aiming to reduce volatility. Managing for volatility given current market valuations will be an important objective. We seek companies with strong balance sheets, solid cash flows, seasoned and accomplished management teams, and strong product lines, all of which will be essential in their ability to emerge, compete and succeed post-COVID 19.

What are your closing thoughts for Fund shareholders?

We are emphasizing investments in companies with solid cash flow generation, solid balance sheets, and strong and proven management teams. We believe that the U.S. consumer will once again prove to be the driving force for recovery in both the domestic and global economies. Accordingly, our investment focus will keep that catalyst top of mind.

We believe Fed actions and government fiscal policies will be exceptionally accommodative to economic recovery going forward. We are hopeful that we will begin to see a normalization of social activities later this year that will serve to revitalize the economy. That said, ongoing risk assessment through active management is imperative during times of volatility to optimize returns. We believe that U.S. equities are poised to continue to perform, though leadership and sector rotation are likely to be factors along with volatility in markets.

10   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

Looking to the near-term future, we expect convertibles to continue to benefit as equity prices normalize and the structural valuation of convertibles richen. The convertible market has a relatively heavy concentration in the growth areas of the market that we favor—particularly in the technology and health care sectors. That said, the robust issuance in the convertible market is expanding our set of investment opportunities across other sectors. We believe that our focus on continually improving the overall risk/reward of the portfolio will serve investors well during the potentially challenging and volatile days ahead.

As for high yield, the technical backdrop continues to be favorable, in our view. Whereas last year’s supply-demand technical environment was heavily influenced by “fallen angels” (bonds that joined the high-yield market as a result of downgrades), we expect many issuers to exit the market as “rising stars” (bonds that are upgraded to investment-grade status). The resulting shrinking of the market should further support the already strong technicals.

Investment Team Discussion

Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   11

PRINCIPAL
AMOUNT

 

 

 

VALUE

Corporate Bonds (17.2%)  

Airlines (0.4%) 

31,431

Air Canada Pass Through Trust Series 2013-1, Class B*µ
5.375%, 11/15/22

$

31,454

2,167,161

Air Canada Pass Through Trust Series 2015-1, Class B*µ
3.875%, 09/15/24

2,159,901

333,499

Air Canada Pass Through Trust Series 2015-2, Class B*µ
5.000%, 06/15/25

334,503

1,345,128

Alaska Airlines Pass Through Trust Series 2020-1, Class A*µ
4.800%, 02/15/29

1,485,022

999,007

Alaska Airlines Pass Through Trust Series 2020-1, Class B*µ
8.000%, 02/15/27

1,117,709

 

American Airlines, Inc. /
AAdvantage Loyalty IP, Ltd.*µ

884,000

5.500%, 04/20/26

928,792

295,000

5.750%, 04/20/29

316,417

1,134,000

JetBlue Pass Through Trust Series 2020-1, Class Bµ
7.750%, 05/15/30

1,298,713

725,000

Spirit Loyalty Cayman, Ltd. /
Spirit IP Cayman, Ltd.*
8.000%, 09/20/25

821,991

418,645

UAL Pass Through Trust Series 2007-1
6.636%, 01/02/24

434,713

1,107,157

United Airlines Pass Through Trust Series 2014-2, Class B
4.625%, 03/03/24

1,135,899

706,474

United Airlines Pass Through Trust Series 2019-2, Class B
3.500%, 11/01/29

690,677

 

10,755,791

 

Communication Services (2.2%) 

1,795,000

Arrow Bidco, LLC*
9.500%, 03/15/24

1,796,831

1,205,000

Ashtead Capital, Inc.*µ
4.000%, 05/01/28

1,267,238

884,000

Beasley Mezzanine Holdings, LLC*
8.625%, 02/01/26

905,967

910,000

Brink’s Company*µ
5.500%, 07/15/25

966,757

473,000

Cable One, Inc.*^
4.000%, 11/15/30

468,204

2,135,000

Cincinnati Bell, Inc.*
8.000%, 10/15/25

2,268,672

147,000

Clear Channel Outdoor Holdings, Inc.*
7.750%, 04/15/28

151,520

1,015,000

Consolidated Communications, Inc.*^
6.500%, 10/01/28

1,095,063

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

CSC Holdings, LLC*

4,240,000

5.500%, 04/15/27^

$

4,454,035

2,600,000

5.750%, 01/15/30

2,767,934

1,600,000

5.500%, 05/15/26

1,645,744

1,000,000

4.625%, 12/01/30

978,660

2,035,000

Cumulus Media New Holdings, Inc.*^
6.750%, 07/01/26

2,099,876

 

Diamond Sports Group, LLC /
Diamond Sports Finance Company*^

825,000

6.625%, 08/15/27

447,167

656,000

5.375%, 08/15/26

479,654

4,561,000

Embarq Corp.
7.995%, 06/01/36

5,319,905

 

Entercom Media Corp.*

589,000

6.750%, 03/31/29

608,614

523,000

6.500%, 05/01/27^

537,526

 

Frontier Communications Corp.

1,690,000

7.625%, 04/15/24@

1,228,833

860,000

11.000%, 09/15/25@

654,443

435,000

5.875%, 10/15/27*

462,888

1,785,000

Frontier North, Inc.@
6.730%, 02/15/28

1,915,091

 

Go Daddy Operating Company, LLC /
GD Finance Company, Inc.*

445,000

3.500%, 03/01/29

434,462

301,000

5.250%, 12/01/27

315,851

345,000

Hughes Satellite Systems Corp.µ
5.250%, 08/01/26

380,904

 

Intelsat Jackson Holdings, SA@

935,000

8.000%, 02/15/24*

967,258

900,000

9.750%, 07/15/25*

561,501

585,000

5.500%, 08/01/23

359,962

1,850,000

LCPR Senior Secured Financing DAC*
6.750%, 10/15/27

1,991,155

870,000

Ligado Networks, LLC*
15.500%, 11/01/23

858,038

1,400,000

Lumen Technologies, Inc.*
4.000%, 02/15/27

1,426,642

 

Netflix, Inc.µ

910,000

4.875%, 06/15/30*^

1,056,938

610,000

4.875%, 04/15/28

703,062

 

Scripps Escrow II, Inc.*

591,000

3.875%, 01/15/29

587,383

295,000

5.375%, 01/15/31

299,575

1,595,000

Scripps Escrow, Inc.*^
5.875%, 07/15/27

1,678,737

591,000

Shift4 Payments, LLC /
Shift4 Payments Finance Sub, Inc.*
4.625%, 11/01/26

616,862

 

Sirius XM Radio, Inc.*

1,500,000

5.500%, 07/01/29^

1,623,030

1,500,000

4.625%, 07/15/24

1,544,025

885,000

Spanish Broadcasting System, Inc.*
9.750%, 03/01/26

858,379


Schedule of Investments April 30, 2021 (Unaudited)

12   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

PRINCIPAL
AMOUNT

 

 

 

VALUE

2,150,000

Sprint Capital Corp.
6.875%, 11/15/28

$

2,709,731

3,045,000

Sprint Corp.
7.125%, 06/15/24

3,521,908

880,000

Telecom Italia Capital, SA
6.000%, 09/30/34

992,640

425,000

Telesat Canada /
Telesat, LLC*
4.875%, 06/01/27

416,449

1,660,000

United States Cellular Corp.
6.700%, 12/15/33

2,075,531

588,000

Univision Communications, Inc.*
5.125%, 02/15/25

598,843

125,000

Vodafone Group, PLC‡
7.000%, 04/04/79
USD 5 year swap rate + 4.87%

152,630

464,000

Windstream Services, LLC /
Windstream Finance Corp.@
&
7.750%, 10/01/21

4,988

 

59,257,106

 

Consumer Discretionary (2.7%) 

1,243,000

American Axle & Manufacturing, Inc.^
6.875%, 07/01/28

1,330,085

 

Ashton Woods USA, LLC /
Ashton Woods Finance Company*

856,000

6.625%, 01/15/28

923,692

661,000

9.875%, 04/01/27

752,780

352,000

Avis Budget Car Rental, LLC /
Avis Budget Finance, Inc.*
5.375%, 03/01/29

368,477

1,500,000

Bally’s Corp.*
6.750%, 06/01/27

1,598,235

1,445,000

BorgWarner, Inc.*µ^
5.000%, 10/01/25

1,668,513

1,500,000

Boyd Gaming Corp.^
6.000%, 08/15/26

1,557,930

149,000

Boyne USA, Inc.*
4.750%, 05/15/29

153,272

 

Caesars Entertainment, Inc.*

605,000

8.125%, 07/01/27^

673,202

605,000

6.250%, 07/01/25

643,750

1,740,000

Caesars Resort Collection, LLC /
CRC Finco, Inc.*^
5.250%, 10/15/25

1,756,878

 

Carnival Corp.*

582,000

10.500%, 02/01/26^

687,563

295,000

7.625%, 03/01/26

323,470

596,000

Carriage Services, Inc.*
4.250%, 05/15/29

594,510

 

Carvana Company*

900,000

5.625%, 10/01/25

928,647

295,000

5.500%, 04/15/27

299,342

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

CCO Holdings, LLC /
CCO Holdings Capital Corp.*

3,900,000

5.125%, 05/01/27

$

4,087,629

983,000

5.750%, 02/15/26

1,016,579

681,000

4.750%, 03/01/30

711,230

620,000

5.000%, 02/01/28

648,446

598,000

4.250%, 02/01/31

598,526

900,000

Cedar Fair, LP^
5.250%, 07/15/29

926,217

 

Century Communities, Inc.

1,500,000

6.750%, 06/01/27

1,617,870

1,330,000

5.875%, 07/15/25

1,381,750

2,500,000

Dana Financing Luxembourg Sarl*
6.500%, 06/01/26

2,595,500

 

DISH DBS Corp.^

926,000

7.750%, 07/01/26

1,068,215

300,000

7.375%, 07/01/28

324,372

 

ESH Hospitality, Inc.*

820,000

5.250%, 05/01/25^

837,277

600,000

4.625%, 10/01/27

636,324

735,000

Ford Motor Company
8.500%, 04/21/23

823,898

 

Ford Motor Credit Company, LLC

1,885,000

4.000%, 11/13/30

1,925,905

1,600,000

4.063%, 11/01/24

1,686,848

1,400,000

4.134%, 08/04/25

1,477,000

1,400,000

3.664%, 09/08/24

1,458,282

600,000

4.389%, 01/08/26

641,316

 

General Motors Financial Company, Inc.‡

140,000

5.700%, 09/30/30
5 year CMT + 5.00%

156,716

125,000

6.500%, 09/30/28^
3 mo. USD LIBOR + 3.44%

138,605

 

goeasy, Ltd.*

2,400,000

5.375%, 12/01/24

2,498,232

1,111,000

4.375%, 05/01/26

1,125,121

591,000

Guitar Center, Inc.*&
8.500%, 01/15/26

625,509

301,000

Installed Building Products, Inc.*
5.750%, 02/01/28

317,555

 

International Game Technology, PLC*

1,500,000

6.250%, 01/15/27^

1,685,550

400,000

4.125%, 04/15/26

412,720

374,000

5.250%, 01/15/29

397,147

 

L Brands, Inc.

1,577,000

6.694%, 01/15/27

1,831,118

878,000

6.875%, 11/01/35

1,065,655

884,000

Life Time, Inc.*^
8.000%, 04/15/26

932,443

 

M/I Homes, Inc.

1,295,000

5.625%, 08/01/25

1,346,036

855,000

4.950%, 02/01/28

901,307


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   13

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Macy’s Retail Holdings, LLC

600,000

6.700%, 07/15/34*

$

599,682

275,000

5.125%, 01/15/42

239,399

605,000

Macy’s, Inc.*^
8.375%, 06/15/25

667,769

298,000

Magic Mergeco, Inc.*
5.250%, 05/01/28

302,264

 

Mattel, Inc.*

1,505,000

5.875%, 12/15/27

1,654,868

267,000

6.750%, 12/31/25

281,012

147,000

3.750%, 04/01/29

150,588

1,365,000

Mclaren Finance, PLC*
5.750%, 08/01/22

1,353,206

298,000

Meritage Homes Corp.*µ^
3.875%, 04/15/29

306,579

1,072,000

Midwest Gaming Borrower, LLC*
4.875%, 05/01/29

1,072,943

884,000

Mohegan Gaming & Entertainment*
8.000%, 02/01/26

898,188

1,122,000

Newell Brands, Inc.µ
4.700%, 04/01/26

1,251,030

291,000

News Corp.*µ
3.875%, 05/15/29

296,820

1,400,000

Penske Automotive Group, Inc.^
5.500%, 05/15/26

1,446,004

 

Rite Aid Corp.

2,348,000

8.000%, 11/15/26*

2,441,380

586,000

7.700%, 02/15/27

574,456

 

Royal Caribbean Cruises, Ltd.*

600,000

11.500%, 06/01/25

695,970

300,000

10.875%, 06/01/23

344,574

589,000

Simmons Foods Inc/Simmons Prepared Foods Inc/Simmons Pet Food Inc/Simmons Feed*^
4.625%, 03/01/29

594,378

1,500,000

Speedway Motorsports, LLC /
Speedway Funding II, Inc.*
4.875%, 11/01/27

1,509,450

901,000

Taylor Morrison Communities, Inc.*
5.750%, 01/15/28

1,017,355

295,000

Tempur Sealy International, Inc.*
4.000%, 04/15/29

298,859

295,000

TopBuild Corp.*
3.625%, 03/15/29

294,112

470,648

US Airways Pass Through Trust Series 2012-2, Class B
6.750%, 12/03/22

471,090

290,000

Viking Cruises, Ltd.*
13.000%, 05/15/25

339,576

1,355,000

Vista Outdoor, Inc.*
4.500%, 03/15/29

1,354,336

1,200,000

VOC Escrow, Ltd.*^
5.000%, 02/15/28

1,225,392

PRINCIPAL
AMOUNT

 

 

 

VALUE

298,000

Williams Scotsman International, Inc.*
4.625%, 08/15/28

$

304,937

 

74,143,461

 

Consumer Staples (0.7%) 

 

Central Garden & Pet Company

591,000

4.125%, 10/15/30

610,349

298,000

4.125%, 04/30/31*

297,261

 

Edgewell Personal Care Company*

884,000

4.125%, 04/01/29

883,549

588,000

5.500%, 06/01/28

626,361

1,341,000

Energizer Holdings, Inc.*^
4.375%, 03/31/29

1,335,582

780,000

Fresh Market, Inc.*
9.750%, 05/01/23

802,916

1,475,000

JBS USA LUX, SA /
JBS USA Finance, Inc.*
6.750%, 02/15/28

1,627,766

480,000

JBS USA LUX, SA /
JBS USA Food Company /
JBS USA Finance, Inc.*
6.500%, 04/15/29

541,723

 

Kraft Heinz Foods Company

1,820,000

4.375%, 06/01/46

1,952,260

296,000

4.250%, 03/01/31

326,488

296,000

3.875%, 05/15/27

322,471

125,000

Land O’Lakes, Inc.*
7.000%, 09/18/28

128,404

751,000

New Albertson’s, Inc.
7.750%, 06/15/26

872,151

1,720,000

Pilgrim’s Pride Corp.*^
5.875%, 09/30/27

1,832,058

 

Post Holdings, Inc.*

1,430,000

5.750%, 03/01/27^

1,500,428

860,000

4.625%, 04/15/30

869,013

442,000

Prestige Brands, Inc.*
3.750%, 04/01/31

424,709

447,000

Turning Point Brands, Inc.*^
5.625%, 02/15/26

463,177

1,300,000

United Natural Foods, Inc.*^
6.750%, 10/15/28

1,402,804

1,645,000

Vector Group, Ltd.*
5.750%, 02/01/29

1,662,996

 

18,482,466

 

Energy (1.6%) 

448,000

Antero Resources Corp.*
7.625%, 02/01/29

485,901

 

Apache Corp.

1,187,000

5.100%, 09/01/40

1,219,702

667,000

4.875%, 11/15/27

704,385

593,000

4.625%, 11/15/25^

627,014

50,237

Bonanza Creek Energy, Inc.
7.500%, 04/30/26

50,488


Schedule of Investments April 30, 2021 (Unaudited)

14   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Buckeye Partners, LP

900,000

3.950%, 12/01/26^

$

905,796

600,000

5.850%, 11/15/43

592,908

733,000

ChampionX Corp.
6.375%, 05/01/26

768,902

 

Cheniere Energy Partners, LP

1,200,000

5.625%, 10/01/26µ

1,252,392

300,000

4.000%, 03/01/31*^

305,628

591,000

Cheniere Energy, Inc.*
4.625%, 10/15/28

616,744

 

Continental Resources, Inc.^

1,175,000

3.800%, 06/01/24

1,232,281

875,000

4.375%, 01/15/28

952,630

1,950,000

DCP Midstream Operating, LP*‡
5.850%, 05/21/43
3 mo. USD LIBOR + 3.85%

1,784,270

515,000

Diamond Offshore Drilling, Inc.@
7.875%, 08/15/25

93,988

200,000

Enbridge, Inc.‡
5.750%, 07/15/80
5 year CMT + 5.31%

220,224

2,610,000

Energy Transfer, LP‡
3.193%, 11/01/66
3 mo. USD LIBOR + 3.02%

1,937,925

 

EnLink Midstream Partners, LP

1,775,000

6.000%, 12/15/22‡
3 mo. USD LIBOR + 4.11%

1,234,388

1,285,000

4.850%, 07/15/26

1,296,514

 

EQT Corp.

630,000

8.500%, 02/01/30^

806,299

500,000

7.625%, 02/01/25^

576,260

300,000

5.000%, 01/15/29

327,912

1,173,000

Genesis Energy, LP /
Genesis Energy Finance Corp.
6.250%, 05/15/26

1,152,203

1,000,000

Gulfport Energy Corp.@
6.375%, 05/15/25

1,004,580

985,000

Laredo Petroleum, Inc.
10.125%, 01/15/28

1,015,811

1,310,000

Magnolia Oil & Gas Operating, LLC /
Magnolia Oil & Gas Finance Corp.*^
6.000%, 08/01/26

1,353,099

 

Moss Creek Resources Holdings, Inc.*

600,000

10.500%, 05/15/27

568,818

540,000

7.500%, 01/15/26

483,921

135,000

MPLX, LPµ^‡
6.875%, 02/15/23
3 mo. USD LIBOR + 4.65%

136,763

589,000

Murphy Oil Corp.µ
6.375%, 07/15/28

598,719

 

New Fortress Energy, Inc.*

591,000

6.750%, 09/15/25

612,465

589,000

6.500%, 09/30/26

601,145

PRINCIPAL
AMOUNT

 

 

 

VALUE

540,000

Nine Energy Service, Inc.*
8.750%, 11/01/23

$

225,412

296,000

Oasis Midstream Partners, LP /
OMP Finance Corp.*
8.000%, 04/01/29

303,142

 

Occidental Petroleum Corp.

3,641,000

4.300%, 08/15/39

3,222,103

2,675,000

2.900%, 08/15/24^

2,671,496

2,190,000

2.700%, 08/15/22µ

2,206,535

580,000

5.875%, 09/01/25^

634,282

285,000

Ovintiv Exploration, Inc.µ
5.750%, 01/30/22

293,883

285,000

Ovintiv, Inc.µ^
6.500%, 08/15/34

363,780

562,000

Par Petroleum, LLC /
Par Petroleum Finance Corp.*
7.750%, 12/15/25

571,189

900,000

Parkland Fuel Corp.*~
5.875%, 07/15/27

959,769

1,390,000

Plains All American Pipeline, LPµ‡
6.125%, 11/15/22
3 mo. USD LIBOR + 4.11%

1,173,132

446,000

Range Resources Corp.*^
8.250%, 01/15/29

484,592

1,165,000

SESI, LLC@
7.750%, 09/15/24

470,427

639,000

Transocean, Inc.*
11.500%, 01/30/27

619,038

592,000

Vine Energy Holdings, LLC*
6.750%, 04/15/29

593,154

600,000

Viper Energy Partners, LP*
5.375%, 11/01/27

628,446

770,000

W&T Offshore, Inc.*
9.750%, 11/01/23

681,604

552,000

Weatherford International, Ltd.*
11.000%, 12/01/24

544,427

 

42,166,486

 

Financials (3.5%) 

3,918,000

Acrisure, LLC /
Acrisure Finance, Inc.*^
7.000%, 11/15/25

4,036,950

889,000

Aethon United BR, LP /
Aethon United Finance Corp.*
8.250%, 02/15/26

943,798

1,255,000

AG Issuer, LLC*
6.250%, 03/01/28

1,301,724

2,500,000

Alliant Holdings Intermediate, LLC /
Alliant Holdings Co-Issuer*^
6.750%, 10/15/27

2,635,725

 

Ally Financial, Inc.

1,899,000

8.000%, 11/01/31µ

2,671,627

1,392,000

4.700%, 05/15/26‡
5 year CMT + 3.87%

1,416,847


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   15

PRINCIPAL
AMOUNT

 

 

 

VALUE

250,000

American International Group, Inc.µ‡
5.750%, 04/01/48
3 mo. USD LIBOR + 2.87%

$

284,107

2,383,000

AmWINS Group, Inc.*
7.750%, 07/01/26

2,540,111

2,700,000

AssuredPartners, Inc.*
7.000%, 08/15/25

2,772,846

1,307,000

Aviation Capital Group, LLC*µ
3.500%, 11/01/27

1,355,163

240,000

Bank of America Corp.µ‡
4.300%, 01/28/25
3 mo. USD LIBOR + 2.66%

246,883

220,000

Bank of Montrealµ^‡
4.800%, 08/25/24
5 year CMT + 2.98%

233,200

 

Bank of New York Mellon Corp.µ‡

400,000

4.700%, 09/20/25
5 year CMT + 4.36%

442,340

62,000

3.700%, 03/20/26
5 year CMT + 3.35%

65,101

400,000

Bank of Nova Scotiaµ‡
4.900%, 06/04/25
5 year CMT + 4.55%

429,712

70,000

Bank OZK‡
5.500%, 07/01/26
3 mo. USD LIBOR + 4.43%

70,349

200,000

Barclays, PLC‡
7.875%, 03/15/22
USD 5 year swap rate + 6.77%

210,440

 

BP Capital Markets, PLCµ‡

280,000

4.875%, 03/22/30
5 year CMT + 4.40%

301,540

135,000

4.375%, 06/22/25
5 year CMT + 4.04%

143,859

1,191,000

BroadStreet Partners, Inc.*
5.875%, 04/15/29

1,210,604

3,447,000

Brookfield Property REIT, Inc. /
BPR Cumulus, LLC /
BPR Nimbus, LLC /
GGSI Sellco, LLC*^
5.750%, 05/15/26

3,604,942

 

Charles Schwab Corp.µ‡

325,000

4.000%, 06/01/26
5 year CMT + 3.17%

335,488

147,000

4.000%, 12/01/30
10 year CMT + 3.08%

146,969

135,000

5.375%, 06/01/25
5 year CMT + 4.97%

151,069

250,000

CIT Group, Inc.‡
5.800%, 06/15/22
3 mo. USD LIBOR + 3.97%

259,085

 

Citigroup, Inc.‡

975,000

3.875%, 02/18/26
5 year CMT + 3.42%

981,669

PRINCIPAL
AMOUNT

 

 

 

VALUE

150,000

4.000%, 12/10/25
5 year CMT + 3.60%

$

152,505

 

Credit Acceptance Corp.^

1,500,000

6.625%, 03/15/26

1,587,255

1,092,000

5.125%, 12/31/24*

1,129,106

200,000

Credit Suisse Group, AG*‡
7.500%, 12/11/23
USD 5 year swap rate + 4.60%

220,478

372,000

Cushman & Wakefield US Borrower, LLC*
6.750%, 05/15/28

398,996

 

Discover Financial Services‡

245,000

6.125%, 06/23/25
5 year CMT + 5.78%

276,404

135,000

5.500%, 10/30/27
3 mo. USD LIBOR + 3.08%

144,816

1,500,000

Donnelley Financial Solutions, Inc.
8.250%, 10/15/24

1,575,030

550,000

Fifth Third Bancorp^‡
4.500%, 09/30/25
5 year CMT + 4.22%

603,311

1,233,000

Genworth Mortgage Holdings, Inc.*
6.500%, 08/15/25

1,340,074

793,275

Global Aircraft Leasing Company, Ltd.*
6.500%, 09/15/24
7.250% PIK rate

790,863

1,428,000

Global Net Lease, Inc. /
Global Net Lease Operating Partner
ship, LP*
3.750%, 12/15/27

1,413,092

 

Goldman Sachs Group, Inc.‡

500,000

4.400%, 02/10/25
5 year CMT + 2.85%

518,285

475,000

3.800%, 05/10/26
5 year CMT + 2.97%

475,456

1,891,000

Greystar Real Estate Partners, LLC*
5.750%, 12/01/25

1,952,476

200,000

HSBC Holdings, PLCµ^‡
6.375%, 03/30/25
U.S. 5 yr Swap + 4.37%

221,944

5,150,000

HUB International, Ltd.*
7.000%, 05/01/26

5,346,421

 

Huntington Bancshares, Inc.^‡

350,000

4.450%, 10/15/27
7 year CMT + 4.05%

375,630

125,000

5.625%, 07/15/30
10 year CMT + 4.95%

145,774

70,000

5.700%, 04/15/23
3 mo. USD LIBOR + 2.88%

72,153

 

Icahn Enterprises, LP /
Icahn Enterprises Finance Corp.

1,455,000

5.250%, 05/15/27^

1,491,579

892,000

4.375%, 02/01/29*

866,730


Schedule of Investments April 30, 2021 (Unaudited)

16   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

PRINCIPAL
AMOUNT

 

 

 

VALUE

2,448,000

ILFC E-Capital Trust II*‡
4.250%, 12/21/65
3 mo. USD LIBOR + 1.80%

$

2,084,545

2,625,000

Iron Mountain, Inc.*^
5.250%, 03/15/28

2,756,959

2,475,000

Jefferies Finance, LLC /
JFIN Co-Issuer Corp.*
6.250%, 06/03/26

2,606,002

555,000

JPMorgan Chase & Companyµ‡
4.600%, 02/01/25
SOFR + 3.13%

572,854

 

Ladder Capital Finance Holdings LLLP /
Ladder Capital Finance Corp.*

2,606,000

5.250%, 10/01/25

2,645,820

288,000

4.250%, 02/01/27

282,672

595,000

LD Holdings Group, LLC*
6.125%, 04/01/28

598,070

990,000

Level 3 Financing, Inc.
5.375%, 05/01/25

1,012,136

200,000

Lloyds Banking Group, PLC‡
7.500%, 06/27/24
USD 5 year swap rate + 4.76%

226,514

1,467,000

LPL Holdings, Inc.*
4.000%, 03/15/29

1,472,501

240,000

Markel Corp.^‡
6.000%, 06/01/25
5 year CMT + 5.66%

266,863

 

MetLife, Inc.µ

2,990,000

6.400%, 12/15/66

3,775,443

285,000

3.850%, 09/15/25^‡
5 year CMT + 3.58%

300,190

120,000

Nationwide Financial Services, Inc.µ
6.750%, 05/15/87

146,959

 

Navient Corp.

2,555,000

5.000%, 03/15/27^

2,576,743

1,355,000

4.875%, 03/15/28

1,329,567

200,000

Nippon Life Insurance Company*µ‡
2.750%, 01/21/51
5 year CMT + 2.65%

193,774

200,000

Nordea Bank Abp*µ‡
6.625%, 03/26/26
5 year CMT + 4.11%

231,070

 

OneMain Finance Corp.

1,500,000

7.125%, 03/15/26

1,753,575

1,145,000

6.875%, 03/15/25µ

1,302,163

 

Park Intermediate Holdings, LLC /
PK Domestic Property, LLC /
PK Finance Co-Issuer*

708,000

7.500%, 06/01/25

770,375

592,000

5.875%, 10/01/28

628,775

377,000

PartnerRe Finance B, LLCµ^‡
4.500%, 10/01/50
5 year CMT + 3.82%

389,577

PRINCIPAL
AMOUNT

 

 

 

VALUE

742,000

PHH Mortgage Corp.*
7.875%, 03/15/26

$

756,283

1,355,000

Prospect Capital Corp.µ
3.706%, 01/22/26

1,371,626

124,000

Prudential Financial, Inc.^‡
3.700%, 10/01/50
5 year CMT + 3.04%

127,892

200,000

QBE Insurance Group, Ltd.*µ^‡
5.875%, 05/12/25
5 year CMT + 5.51%

216,612

1,500,000

Radian Group, Inc.
4.875%, 03/15/27

1,601,100

1,355,000

RHP Hotel Properties, LP /
RHP Finance Corp.*
4.500%, 02/15/29

1,346,423

718,000

SLM Corp.
4.200%, 10/29/25

757,641

1,500,000

Starwood Property Trust, Inc.
4.750%, 03/15/25

1,564,470

800,000

State Street Corp.µ^‡
5.625%, 12/15/23
3 mo. USD LIBOR + 2.54%

848,912

1,225,000

StoneX Group, Inc.*
8.625%, 06/15/25

1,313,212

224,000

SVB Financial Group^‡
4.100%, 02/15/31
10 year CMT + 3.06%

226,106

 

Truist Financial Corp.µ‡

415,000

4.800%, 09/01/24
5 year CMT + 3.00%

439,672

125,000

4.950%, 09/01/25
5 year CMT + 4.61%

137,788

200,000

UBS Group, AG*‡
7.000%, 01/31/24
USD 5 year swap rate + 4.34%

221,420

 

United Wholesale Mortgage, LLC*

886,000

5.500%, 11/15/25

921,830

593,000

5.500%, 04/15/29

582,996

1,141,000

VICI Properties, LP /
VICI Note Company, Inc.*^
3.750%, 02/15/27

1,150,984

630,000

Wells Fargo & Company‡
3.900%, 03/15/26
5 year CMT + 3.45%

645,032

1,255,000

XHR, LP*
6.375%, 08/15/25

1,334,969

 

93,378,641

 

Health Care (1.6%) 

591,000

Acadia Healthcare Company, Inc.*
5.000%, 04/15/29

611,862

3,285,000

Bausch Health Americas, Inc.*
8.500%, 01/31/27

3,661,132


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   17

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Bausch Health Companies, Inc.*

1,300,000

5.000%, 01/30/28^

$

1,321,658

511,000

5.000%, 02/15/29

512,037

295,000

5.250%, 02/15/31

295,811

 

Centene Corp.µ

1,216,000

4.250%, 12/15/27

1,276,423

598,000

3.000%, 10/15/30^

594,209

 

Charles River Laboratories International, Inc.*µ

295,000

4.000%, 03/15/31

303,815

295,000

3.750%, 03/15/29

300,517

 

CHS/Community Health Systems, Inc.*

6,285,000

8.125%, 06/30/24

6,591,582

1,325,000

8.000%, 03/15/26

1,429,145

663,000

6.875%, 04/15/29

694,002

 

DaVita, Inc.*

1,772,000

4.625%, 06/01/30

1,795,514

880,000

3.750%, 02/15/31

837,135

 

Encompass Health Corp.

600,000

4.750%, 02/01/30

632,484

600,000

4.500%, 02/01/28^

622,368

1,369,000

HCA, Inc.
7.500%, 11/06/33

1,868,124

350,000

Jazz Securities DAC*
4.375%, 01/15/29

358,081

1,955,000

Mallinckrodt International Finance, SA /
Mallinckrodt CB, LLC*@
5.625%, 10/15/23

1,333,212

 

Organon Finance 1, LLC*

2,200,000

5.125%, 04/30/31

2,284,018

500,000

4.125%, 04/30/28µ

513,285

1,251,000

Team Health Holdings, Inc.*
6.375%, 02/01/25

1,109,812

 

Tenet Healthcare Corp.

2,710,000

6.250%, 02/01/27*

2,844,118

1,600,000

4.625%, 07/15/24

1,625,600

1,575,000

6.875%, 11/15/31

1,764,205

1,520,000

4.875%, 01/01/26*

1,580,709

2,609,000

Teva Pharmaceutical Finance Company, BV
2.950%, 12/18/22

2,626,611

 

Teva Pharmaceutical Finance Netherlands III, BV

2,530,000

2.800%, 07/21/23

2,514,719

2,380,000

6.000%, 04/15/24

2,516,160

 

44,418,348

 

Industrials (2.6%) 

1,180,000

Abercrombie & Fitch Management Company*µ
8.750%, 07/15/25

1,309,918

1,355,000

ACCO Brands Corp.*
4.250%, 03/15/29

1,334,851

PRINCIPAL
AMOUNT

 

 

 

VALUE

190,000

Air Lease Corp.µ‡
4.650%, 06/15/26
5 year CMT + 4.08%

$

194,186

 

Albertsons Companies, Inc. /
Safeway, Inc. /
New Albertsons, LP /
Albertsons, LLC*

1,448,000

4.875%, 02/15/30

1,509,641

1,425,000

4.625%, 01/15/27^

1,483,966

591,000

3.500%, 03/15/29^

569,700

 

Allison Transmission, Inc.*µ^

1,233,000

4.750%, 10/01/27

1,297,054

295,000

3.750%, 01/30/31

285,289

295,000

American Airlines Group, Inc.*^
3.750%, 03/01/25

259,874

670,000

Arcosa, Inc.*
4.375%, 04/15/29

685,691

3,100,000

ARD Finance, SA*
6.500%, 06/30/27
7.250% PIK rate

3,253,822

600,000

Avolon Holdings Funding, Ltd.*µ
5.250%, 05/15/24

655,554

 

Beacon Roofing Supply, Inc.*

1,480,000

4.875%, 11/01/25^

1,518,628

447,000

4.125%, 05/15/29

446,155

596,000

BWX Technologies, Inc.*µ
4.125%, 04/15/29

612,503

 

Cascades, Inc. /
Cascades USA, Inc.*µ

901,000

5.125%, 01/15/26^

961,962

600,000

5.375%, 01/15/28

626,664

 

Delta Air Lines, Inc.

297,000

7.375%, 01/15/26^

348,547

297,000

3.800%, 04/19/23

307,440

 

Delta Air Lines, Inc. /
SkyMiles IP, Ltd.*µ

295,000

4.750%, 10/20/28

323,987

148,000

4.500%, 10/20/25

158,878

879,000

Endure Digital, Inc.*
6.000%, 02/15/29

842,873

575,000

EnerSys*
4.375%, 12/15/27

603,463

1,355,000

Fly Leasing, Ltd.
5.250%, 10/15/24

1,381,626

80,000

General Electric Company^‡
3.514%, 06/15/21
3 mo. USD LIBOR + 3.33%

76,110

591,000

GFL Environmental, Inc.*
3.750%, 08/01/25

602,099

 

Golden Nugget, Inc.*^

900,000

6.750%, 10/15/24

912,150

620,000

8.750%, 10/01/25

652,587

673,000

Graham Packaging Company, Inc.*
7.125%, 08/15/28

723,980


Schedule of Investments April 30, 2021 (Unaudited)

18   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

PRINCIPAL
AMOUNT

 

 

 

VALUE

600,000

Granite US Holdings Corp.*^
11.000%, 10/01/27

$

674,286

750,000

Graphic Packaging International, LLC*
4.750%, 07/15/27

818,595

1,500,000

Great Lakes Dredge & Dock Corp.
8.000%, 05/15/22

1,504,035

1,960,000

H&E Equipment Services, Inc.*
3.875%, 12/15/28

1,923,858

1,500,000

Herc Holdings, Inc.*
5.500%, 07/15/27

1,587,780

 

Howmet Aerospace, Inc.

1,375,000

5.125%, 10/01/24^

1,508,155

511,000

6.875%, 05/01/25

593,225

1,450,000

JELD-WEN, Inc.*
4.625%, 12/15/25

1,481,958

594,000

KeHE Distributors, LLC /
KeHE Finance Corp.*
8.625%, 10/15/26

666,254

886,000

Ken Garff Automotive, LLC*
4.875%, 09/15/28

895,967

598,000

MasTec, Inc.*
4.500%, 08/15/28

626,656

 

Meritor, Inc.

1,867,000

6.250%, 02/15/24

1,898,683

177,000

4.500%, 12/15/28*

179,660

722,000

Moog, Inc.*µ
4.250%, 12/15/27

743,198

1,425,000

Nationstar Mortgage Holdings, Inc.*
6.000%, 01/15/27

1,490,436

 

Navistar International Corp.*

1,880,000

6.625%, 11/01/25

1,950,857

590,000

9.500%, 05/01/25

640,758

1,140,000

Novelis Corp.*^
4.750%, 01/30/30

1,189,784

1,370,000

Park-Ohio Industries, Inc.
6.625%, 04/15/27

1,408,798

 

Patrick Industries, Inc.*

600,000

7.500%, 10/15/27

654,966

596,000

4.750%, 05/01/29

597,919

1,445,000

Peninsula Pacific Entertainment, LLC /
Peninsula Pacific Entertainment Fina
nce In*
8.500%, 11/15/27

1,538,145

302,000

Picasso Finance Sub, Inc.*^
6.125%, 06/15/25

321,579

1,155,000

QVC, Inc.
4.375%, 09/01/28

1,187,917

885,000

Scientific Games International, Inc.*
5.000%, 10/15/25

914,878

1,019,000

SEG Holding, LLC /
SEG Finance Corp.*^
5.625%, 10/15/28

1,074,393

PRINCIPAL
AMOUNT

 

 

 

VALUE

650,000

Sensata Technologies, BV*
4.000%, 04/15/29

$

654,687

593,000

Sensata Technologies, Inc.*
3.750%, 02/15/31

589,899

 

Sinclair Television Group, Inc.*

600,000

5.500%, 03/01/30^

598,848

591,000

4.125%, 12/01/30

576,704

 

Standard Industries, Inc.*

1,165,000

5.000%, 02/15/27

1,201,802

302,000

4.375%, 07/15/30^

303,193

100,000

Stanley Black & Decker, Inc.µ^‡
4.000%, 03/15/60
5 year CMT + 2.66%

106,587

 

Station Casinos, LLC*

2,430,000

4.500%, 02/15/28^

2,440,060

788,000

5.000%, 10/01/25

801,286

591,000

Stericycle, Inc.*
3.875%, 01/15/29

591,739

879,000

STL Holding Company, LLC*
7.500%, 02/15/26

926,598

985,000

Tennant Company
5.625%, 05/01/25

1,012,708

1,200,000

TransDigm UK Holdings, PLC^
6.875%, 05/15/26

1,269,516

 

TransDigm, Inc.

1,490,000

6.250%, 03/15/26*

1,578,729

875,000

7.500%, 03/15/27

940,406

295,000

Triton Water Holdings, Inc.*
6.250%, 04/01/29

299,033

589,000

Tronox, Inc.*
4.625%, 03/15/29

602,329

 

United Rentals North America, Inc.

640,000

5.875%, 09/15/26^

670,112

297,000

3.875%, 02/15/31

299,257

750,000

Waste Pro USA, Inc.*
5.500%, 02/15/26

769,313

 

WESCO Distribution, Inc.*

563,000

7.125%, 06/15/25^

610,624

283,000

7.250%, 06/15/28

314,288

1,500,000

XPO Logistics, Inc.*^
6.750%, 08/15/24

1,575,780

 

70,745,436

 

Information Technology (0.6%) 

600,000

CDK Global, Inc.*µ
5.250%, 05/15/29

647,826

1,201,000

CommScope Technologies, LLC*
6.000%, 06/15/25

1,223,843

 

Dell International, LLC /
EMC Corp.*µ

1,405,000

6.020%, 06/15/26

1,677,823

925,000

6.100%, 07/15/27

1,134,217

545,000

5.850%, 07/15/25

639,421


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   19

PRINCIPAL
AMOUNT

 

 

 

VALUE

586,000

Fair Isaac Corp.*
4.000%, 06/15/28

$

596,618

1,315,000

KBR, Inc.*
4.750%, 09/30/28

1,329,860

1,300,000

MPH Acquisition Holdings, LLC*^
5.750%, 11/01/28

1,283,347

589,000

NCR Corp.*
5.125%, 04/15/29

607,677

886,000

ON Semiconductor Corp.*
3.875%, 09/01/28

912,713

855,000

Open Text Corp.*
3.875%, 02/15/28

866,551

590,000

Playtika Holding Corp.*
4.250%, 03/15/29

587,162

784,000

PTC, Inc.*
4.000%, 02/15/28

805,638

885,000

TTM Technologies, Inc.*
4.000%, 03/01/29

887,513

 

Twilio, Inc.

550,000

3.625%, 03/15/29

561,578

298,000

3.875%, 03/15/31^

306,168

1,355,000

ZoomInfo Technologies, LLC /
ZoomInfo Finance Corp.*^
3.875%, 02/01/29

1,346,125

 

15,414,080

 

Materials (0.8%) 

 

Alcoa Nederland Holding, BV*µ

1,835,000

7.000%, 09/30/26

1,937,613

800,000

4.125%, 03/31/29

822,104

600,000

Allegheny Technologies, Inc.^
5.875%, 12/01/27

635,028

900,000

ArcelorMittal, SA
7.250%, 10/15/39

1,269,621

507,000

Ardagh Packaging Finance, PLC /
Ardagh Holdings USA, Inc.*
6.000%, 02/15/25

523,320

1,585,000

Clearwater Paper Corp.*
4.750%, 08/15/28

1,601,706

800,000

First Quantum Minerals, Ltd.*
7.250%, 04/01/23

815,744

 

Freeport-McMoRan, Inc.

780,000

5.000%, 09/01/27^

829,039

570,000

5.450%, 03/15/43

697,019

515,000

5.400%, 11/14/34

619,627

886,000

HB Fuller Company
4.250%, 10/15/28

903,392

 

Hudbay Minerals, Inc.*

915,000

6.125%, 04/01/29

976,772

295,000

4.500%, 04/01/26

299,452

900,000

JW Aluminum Continuous Cast Company*
10.250%, 06/01/26

951,525

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Kaiser Aluminum Corp.*

615,000

4.625%, 03/01/28^

$

632,730

535,000

6.500%, 05/01/25

569,764

957,000

Mercer International, Inc.*
5.125%, 02/01/29

994,754

 

New Gold, Inc.*

364,000

6.375%, 05/15/25

375,706

300,000

7.500%, 07/15/27

326,121

301,000

Norbord, Inc.*µ
5.750%, 07/15/27

328,006

1,170,000

OCI, NV*
4.625%, 10/15/25

1,224,896

593,000

Owens-Brockway Glass Container, Inc.*
6.625%, 05/13/27

644,858

1,583,000

PBF Holding Company, LLC /
PBF Finance Corp.~
7.250%, 06/15/25

1,349,951

1,328,000

Silgan Holdings, Inc.
4.125%, 02/01/28

1,373,829

589,000

Trinseo Materials Operating SCA /
Trinseo Materials Finance, Inc.*
5.125%, 04/01/29

599,096

906,000

Univar Solutions USA, Inc.*
5.125%, 12/01/27

949,452

593,000

Valvoline, Inc.*
3.625%, 06/15/31

580,452

 

22,831,577

 

Real Estate (0.2%) 

953,000

EPR Properties
3.750%, 08/15/29

931,110

 

Forestar Group, Inc.*

1,500,000

8.000%, 04/15/24

1,562,280

862,000

5.000%, 03/01/28

898,299

299,000

3.850%, 05/15/26

303,123

881,000

iStar, Inc.^
5.500%, 02/15/26

914,733

 

Service Properties Trust

1,500,000

4.350%, 10/01/24

1,497,600

550,000

5.250%, 02/15/26

553,702

 

6,660,847

 

Utilities (0.3%) 

856,000

Calpine Corp.*µ
4.500%, 02/15/28

865,921

65,000

CenterPoint Energy, Inc.^‡
6.125%, 09/01/23
3 mo. USD LIBOR + 3.27%

69,210

175,000

CMS Energy Corp.‡
4.750%, 06/01/50
5 year CMT + 4.12%

193,783

250,000

Dominion Energy, Inc.‡
4.650%, 12/15/24
5 year CMT + 2.99%

266,583


Schedule of Investments April 30, 2021 (Unaudited)

20   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

PRINCIPAL
AMOUNT

 

 

 

VALUE

330,000

Duke Energy Corp.‡
4.875%, 09/16/24
5 year CMT + 3.39%

$

350,490

265,000

NextEra Energy Capital Holdings, Inc.µ^‡
4.800%, 12/01/77
3 mo. USD LIBOR + 2.41%

296,320

810,000

NRG Energy, Inc.µ
6.625%, 01/15/27

844,514

1,896,000

PPL Capital Funding, Inc.µ‡
2.864%, 03/30/67
3 mo. USD LIBOR + 2.67%

1,792,137

125,000

Sempra Energy‡
4.875%, 10/15/25
5 year CMT + 4.55%

136,346

247,000

Southern Companyµ‡
4.000%, 01/15/51
5 year CMT + 3.73%

263,430

 

Talen Energy Supply, LLC*

600,000

10.500%, 01/15/26

552,024

300,000

7.250%, 05/15/27^

308,436

1,500,000

TerraForm Power Operating, LLC*
5.000%, 01/31/28

1,616,475

 

7,555,669

 

Total Corporate Bonds
(Cost $448,737,535)

465,809,908

 

Convertible Bonds (22.6%)  

Communication Services (3.0%) 

3,394,000

Eventbrite, Inc.*
0.750%, 09/15/26

3,690,059

 

Liberty Media Corp.

7,750,000

1.375%, 10/15/23

10,142,657

2,680,000

0.500%, 12/01/50*

2,999,322

7,150,000

Liberty Media Corp. /
Liberty Formula One
1.000%, 01/30/23

9,661,795

1,883,000

Live Nation Entertainment, Inc.
2.500%, 03/15/23

2,534,405

3,669,000

Magnite, Inc.*
0.250%, 03/15/26

3,468,966

3,000,000

Match Group FinanceCo 2, Inc.*^~
0.875%, 06/15/26

5,534,670

2,500,000

Match Group FinanceCo 3, Inc.*
2.000%, 01/15/30

4,942,850

1,970,000

Sea, Ltd.*
2.375%, 12/01/25

5,602,188

11,350,000

Snap, Inc.*
0.000%, 05/01/27

11,652,704

 

Twitter, Inc.

8,590,000

0.000%, 03/15/26*

7,840,351

4,330,000

0.250%, 06/15/24

5,317,846

4,935,000

Zynga, Inc.
0.250%, 06/01/24

6,923,953

 

80,311,766

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Consumer Discretionary (5.9%) 

1,187,000

Bloomin’ Brands, Inc.*
5.000%, 05/01/25

$

3,278,340

15,201,000

Booking Holdings, Inc.*^
0.750%, 05/01/25

23,059,157

7,785,000

Burlington Stores, Inc.*
2.250%, 04/15/25

12,462,539

6,435,000

Chegg, Inc.*
0.000%, 09/01/26

7,069,234

1,895,000

Dick’s Sporting Goods, Inc.
3.250%, 04/15/25

4,655,067

2,164,000

DISH Network Corp.
2.375%, 03/15/24

2,112,605

6,685,000

DraftKings, Inc.*
0.000%, 03/15/28

6,391,462

8,830,000

Etsy, Inc.*
0.125%, 09/01/27

11,494,717

4,598,000

Expedia Group, Inc.*^
0.000%, 02/15/26

5,021,568

5,635,000

Ford Motor Company*
0.000%, 03/15/26

5,568,338

1,108,000

Guess, Inc.
2.000%, 04/15/24

1,392,656

 

Liberty Interactive, LLC

1,470,000

4.000%, 11/15/29

1,130,107

790,000

3.750%, 02/15/30

605,488

2,970,000

MakeMyTrip, Ltd.*
0.000%, 02/15/28

2,952,269

7,670,000

Marriott Vacations Worldwide Corp.*
0.000%, 01/15/26

9,115,258

 

NCL Corp., Ltd.*

2,439,000

5.375%, 08/01/25

4,641,490

1,505,000

6.000%, 05/15/24

3,688,800

11,345,000

Royal Caribbean Cruises, Ltd.*
4.250%, 06/15/23

15,974,894

5,730,000

Shake Shack, Inc.*
0.000%, 03/01/28

5,448,084

400,000

Tesla, Inc.
2.000%, 05/15/24

4,570,372

4,160,000

Under Armour, Inc.*
1.500%, 06/01/24

8,688,909

7,865,000

Vail Resorts, Inc.*
0.000%, 01/01/26

8,378,663

4,225,000

Wayfair, Inc.*
0.625%, 10/01/25

4,379,762

5,865,000

Winnebago Industries, Inc.
1.500%, 04/01/25

8,379,795

 

160,459,574

 

Consumer Staples (0.2%) 

5,700,000

Beyond Meat, Inc.*
0.000%, 03/15/27

5,443,101


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   21

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Energy (0.6%) 

3,190,000

EQT Corp.*^
1.750%, 05/01/26

$

4,766,594

6,515,000

Pioneer Natural Resources Company*^
0.250%, 05/15/25

9,911,921

 

14,678,515

 

Financials (0.6%) 

 

Ares Capital Corp.

7,500,000

3.750%, 02/01/22^

7,801,650

3,000,000

4.625%, 03/01/24

3,266,400

4,700,000

JPMorgan Chase Bank, N.A.*^
0.125%, 01/01/23

5,317,392

 

16,385,442

 

Health Care (3.3%) 

1,850,000

CONMED Corp.^
2.625%, 02/01/24

3,052,315

9,218,000

DexCom, Inc.*
0.250%, 11/15/25

9,242,520

3,673,000

Envista Holdings Corp.*^
2.375%, 06/01/25

7,880,642

5,500,000

Exact Sciences Corp.
0.375%, 03/15/27

7,525,100

3,348,000

Guardant Health, Inc.*
0.000%, 11/15/27

4,405,767

3,702,000

Halozyme Therapeutics, Inc.*
0.250%, 03/01/27

3,584,758

5,015,000

Insulet Corp.
0.375%, 09/01/26

7,232,483

3,960,000

Integra LifeSciences Holdings Corp.
0.500%, 08/15/25

4,601,282

8,035,000

Jazz Investments I, Ltd.*
2.000%, 06/15/26

10,386,925

6,925,000

NeoGenomics, Inc.
0.250%, 01/15/28

7,018,072

4,220,000

Oak Street Health, Inc.*
0.000%, 03/15/26

4,417,158

4,680,000

Omnicell, Inc.*
0.250%, 09/15/25

7,288,304

7,755,000

Pacira BioSciences, Inc.*
0.750%, 08/01/25

8,633,874

2,540,000

Repligen Corp.
0.375%, 07/15/24

4,797,679

 

90,066,879

 

Industrials (3.7%) 

6,350,000

Air Canada*
4.000%, 07/01/25

9,773,539

4,600,000

Air Transport Services Group, Inc.
1.125%, 10/15/24

4,905,992

1,015,000

Chart Industries, Inc.*
1.000%, 11/15/24

2,821,142

PRINCIPAL
AMOUNT

 

 

 

VALUE

7,440,000

JetBlue Airways Corp.*
0.500%, 04/01/26

$

8,162,275

8,240,000

Middleby Corp.*
1.000%, 09/01/25

12,376,068

3,763,000

Parsons Corp.*
0.250%, 08/15/25

4,306,904

21,015,000

Southwest Airlines Company
1.250%, 05/01/25

36,552,440

5,805,000

Sunrun, Inc.*
0.000%, 02/01/26

4,798,994

14,800,000

Uber Technologies, Inc.*
0.000%, 12/15/25

15,528,752

 

99,226,106

 

Information Technology (4.4%) 

3,775,000

Bentley Systems, Inc.*
0.125%, 01/15/26

4,013,052

3,382,000

Bill.com Holdings, Inc.*
0.000%, 12/01/25

4,117,788

5,830,000

Coupa Software, Inc.*
0.375%, 06/15/26

6,762,858

4,030,000

Datadog, Inc.*
0.125%, 06/15/25

4,830,842

 

Enphase Energy, Inc.*

5,945,000

0.000%, 03/01/28

5,239,091

2,629,000

0.000%, 03/01/26

2,401,223

1,355,000

Five9, Inc.*
0.500%, 06/01/25

2,049,641

5,040,000

Itron, Inc.*
0.000%, 03/15/26

4,994,186

6,115,000

LivePerson, Inc.*
0.000%, 12/15/26

6,132,122

13,000,000

Microchip Technology, Inc.^
0.125%, 11/15/24

14,929,200

2,735,000

Nova Measuring Instruments, Ltd.*
0.000%, 10/15/25

3,725,945

5,015,000

Okta, Inc.^
0.125%, 09/01/25

7,740,502

4,695,000

ON Semiconductor Corp.
1.625%, 10/15/23

9,193,561

7,590,000

Repay Holdings Corp.*
0.000%, 02/01/26

7,347,879

7,650,000

RingCentral, Inc.
0.000%, 03/01/25

8,655,898

4,981,000

Shift4 Payments, Inc.*
0.000%, 12/15/25

7,014,145

1,542,000

Shopify, Inc.^
0.125%, 11/01/25

1,801,565

3,524,000

Silicon Laboratories, Inc.*
0.625%, 06/15/25

4,622,466

2,680,000

Square, Inc.*
0.000%, 05/01/26

3,105,021


Schedule of Investments April 30, 2021 (Unaudited)

22   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

PRINCIPAL
AMOUNT

 

 

 

VALUE

2,389,000

Wix.com, Ltd.*
0.000%, 08/15/25

$

2,637,814

2,670,000

Workday, Inc.
0.250%, 10/01/22

4,552,457

2,852,000

Zscaler, Inc.*
0.125%, 07/01/25

4,005,463

 

119,872,719

 

Materials (0.1%) 

3,060,000

MP Materials Corp.*
0.250%, 04/01/26

2,928,389

 

Real Estate (0.8%) 

6,120,000

IH Merger Sub, LLC
3.500%, 01/15/22

9,481,961

4,640,000

Pebblebrook Hotel Trust
1.750%, 12/15/26

5,325,699

5,430,000

Redfin Corp.*
0.000%, 10/15/25

6,584,690

 

21,392,350

 

Total Convertible Bonds
(Cost $491,715,792)

610,764,841

Bank Loans (2.0%)¡ 

Airlines (0.1%) 

990,000

AAdvantage Loyalty IP, Ltd.‡
5.500%, 04/20/28
3 mo. LIBOR + 4.75%

1,019,433

1,200,000

United Airlines, Inc.!
0.000%, 04/13/28

1,215,750

300,000

United Airlines, Inc.‡
4.500%, 04/13/28

3 mo. LIBOR + 3.75%

303,937

 

2,539,120

 

Communication Services (0.4%) 

1,551,375

Clear Channel Outdoor Holdings, Inc.‡
3.647%, 08/21/26
3 mo. LIBOR + 3.50%

1,506,455

886,500

CommScope, Inc.‡
3.363%, 04/06/26
1 mo. LIBOR + 3.25%

882,209

767,555

Consolidated Communications, Inc.‡
4.250%, 10/02/27
1 mo. LIBOR + 3.50%

767,283

591,019

CSC Holdings, LLC‡
2.615%, 04/15/27
1 mo. LIBOR + 2.50%

588,986

1,865,000

Frontier Communications Corp.‡
4.500%, 10/08/21
1 mo. LIBOR + 4.75%

1,861,111

1,150,438

iHeartCommunications, Inc.‡
3.113%, 05/01/26
1 mo. LIBOR + 3.00%

1,138,220

PRINCIPAL
AMOUNT

 

 

 

VALUE

2,791,100

Intelsat Jackson Holdings, SA
8.625%, 01/02/24

$

2,851,904

2,275,000

Intelsat Jackson Holdings, SA‡
8.750%, 01/02/24
3 mo. PRIME + 5.50%

2,326,665

 

11,922,833

 

Consumer Discretionary (0.4%) 

1,246,875

Life Time Fitness, Inc.‡
5.750%, 12/16/24
3 mo. LIBOR + 4.75%

1,252,916

1,393,982

Meredith Corp.‡
5.250%, 01/31/25
3 mo. LIBOR + 4.25%

1,420,120

350,000

Meredith Corp.!
0.000%, 01/31/25

356,563

2,100,000

Petco Health and Wellness Company, Inc.‡
4.000%, 03/03/28

3 mo. LIBOR + 3.25%

2,090,371

1,490,000

PetSmart, Inc.‡
4.500%, 02/12/28
3 mo. LIBOR + 3.75%

1,496,146

896,700

Rent-A-Center, Inc.‡
4.750%, 02/17/28
1 mo. LIBOR + 4.00%

904,170

2,090,000

WW International, Inc.!
0.000%, 04/13/28

2,092,351

 

9,612,637

 

Consumer Staples (0.0%) 

164,611

United Natural Foods, Inc.!
0.000%, 10/22/25

164,722

82,485

United Natural Foods, Inc.‡
3.613%, 10/22/25
1 mo. LIBOR + 3.50%

82,541

 

247,263

 

Energy (0.1%) 

245,412

Lealand Finance Company, BV‡
1.113%, 06/30/25
1 mo. LIBOR + 3.00%

109,208

19,639

Lealand Finance Company, BV‡
3.110%, 06/30/24
1 mo. LIBOR + 3.00%

16,005

1,275,197

Par Pacific Holdings, Inc.‡
6.936%, 01/12/26
3 mo. LIBOR + 6.75%

1,268,503

 

1,393,716

 

Financials (0.1%) 

2,450,000

Jazz Financing Lux Sarl!
0.000%, 04/22/28

2,458,159

303,595

Level 3 Financing, Inc.‡
1.863%, 03/01/27
1 mo. LIBOR + 1.75%

300,369

 

2,758,528


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   23

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Health Care (0.4%) 

2,804,543

Amneal Pharmaceuticals, LLC‡
3.625%, 05/04/25
1 mo. LIBOR + 3.50%

$

2,759,838

1,261,403

Endo Luxembourg Finance Company I Sarl‡
5.750%, 03/10/28
3 mo. LIBOR + 5.00%

1,232,707

1,691,552

Gentiva Health Services, Inc.‡
2.875%, 07/02/25
1 mo. LIBOR + 3.25%

1,690,495

1,159,943

Mallinckrodt International Finance, SA‡
6.000%, 09/24/24
3 mo. LIBOR + 4.75%

1,131,310

1,108,288

Ortho Clinical Diagnostics, SA‡
3.361%, 06/30/25
1 mo. LIBOR + 3.25%

1,108,149

2,641,334

Team Health Holdings, Inc.‡
3.750%, 02/06/24
1 mo. LIBOR + 2.75%

2,470,255

 

10,392,754

 

Industrials (0.4%) 

2,063,329

Berry Global, Inc.‡
1.861%, 07/01/26
1 mo. LIBOR + 1.75%

2,048,659

1,200,000

BW Gas & Convenience Holdings, LLC‡
4.000%, 03/17/28
1 mo. LIBOR + 3.50%

1,200,000

1,227,623

Dun & Bradstreet Corp.‡
3.361%, 02/06/26
1 mo. LIBOR + 3.75%

1,222,252

896,527

Granite Holdings US Acquisition Company‡
4.203%, 09/30/26
3 mo. LIBOR + 4.00%

895,406

320,000

Horizon Therapeutics USA, Inc.‡
2.500%, 03/15/28
1 mo. LIBOR + 2.00%

319,280

999,308

Navistar International Corp.‡
3.610%, 11/06/24
1 mo. LIBOR + 3.50%

1,000,183

759,229

RegionalCare Hospital Partners Holdings, Inc.‡
3.863%, 11/16/25
1 mo. LIBOR + 3.75%

757,479

1,920,254

Scientific Games International, Inc.‡
2.863%, 08/14/24
1 mo. LIBOR + 2.75%

1,895,522

303,806

TransDigm, Inc.‡
2.363%, 12/09/25
1 mo. LIBOR + 2.25%

300,428

 

9,639,209

PRINCIPAL
AMOUNT

 

 

 

VALUE

 

Information Technology (0.1%) 

1,436,813

Camelot U.S. Acquisition 1 Company‡
3.113%, 10/30/26
1 mo. LIBOR + 3.00%

$

1,425,498

802,988

Camelot U.S. Acquisition 1 Company‡
4.000%, 10/30/26
1 mo. LIBOR + 3.00%

804,493

1,296,141

VFH Parent, LLC‡
3.115%, 03/01/26
1 mo. LIBOR + 3.00%

1,295,059

 

3,525,050

 

Information Technology (0.0%) 

1,241,975

Banff Merger Sub, Inc.‡
3.863%, 10/02/25
3 mo. LIBOR + 3.75%

1,237,554

 

Materials (0.0%) 

871,200

Innophos, Inc.‡
3.613%, 02/07/27
1 mo. LIBOR + 3.50%

870,655

 

Total Bank Loans
(Cost $54,624,401)

54,139,319

NUMBER OF
SHARES

 

 

 

VALUE

Convertible Preferred Stocks (9.6%)  

Communication Services (0.8%) 

18,160

2020 Cash Mandatory Exchangeable Trust*
5.250%, 06/01/23

21,368,091

 

Consumer Discretionary (0.8%) 

124,295

Aptiv, PLC
5.500%, 06/15/23

20,297,373

 

Financials (0.8%) 

80,250

AMG Capital Trust II
5.150%, 10/15/37

4,648,241

500

Bank of America Corp.‡‡
7.250%

707,990

222,280

KKR & Company, Inc.^
6.000%, 09/15/23

16,666,554

 

22,022,785

 

Health Care (1.5%) 

96,145

Avantor, Inc.
6.250%, 05/15/22

9,502,972

90,115

Boston Scientific Corp.
5.500%, 06/01/23

10,595,721

 

Danaher Corp.

9,980

4.750%, 04/15/22

17,100,830

1,896

5.000%, 04/15/23^

2,684,262

 

39,883,785


Schedule of Investments April 30, 2021 (Unaudited)

24   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

NUMBER OF
SHARES

 

 

 

VALUE

 

Industrials (1.9%) 

62,970

Colfax Corp.
5.750%, 01/15/22

$

11,572,627

18,710

Fortive Corp.
5.000%, 07/01/21

18,588,385

180,605

Stanley Black & Decker, Inc.^
5.250%, 11/15/22

22,035,616

 

52,196,628

 

Information Technology (1.0%) 

19,390

Broadcom, Inc.
8.000%, 09/30/22

28,104,835

 

Utilities (2.8%) 

91,020

AES Corp.
6.875%, 02/15/24

9,920,270

84,885

CenterPoint Energy, Inc. (Warner Media, LLC, Charter Communications Time, Inc.)§**
4.566%, 09/15/29

5,520,581

170,935

Dominion Energy, Inc.
7.250%, 12/15/24

17,631,945

135,145

DTE Energy Company
6.250%, 11/01/22

6,857,257

142,970

Essential Utilities, Inc.
6.000%, 04/30/22

8,450,957

 

NextEra Energy, Inc.

382,660

4.872%, 09/01/22

22,324,385

94,060

6.219%, 09/01/23

4,747,208

 

75,452,603

 

Total Convertible Preferred Stocks
(Cost $210,041,603)

259,326,100

 

Common Stocks (83.1%)  

Communication Services (9.0%) 

34,670

Alphabet, Inc. - Class A^#

81,595,845

10,635

Alphabet, Inc. - Class C^#

25,631,626

264,885

AT&T, Inc.^~

8,320,038

411,425

Comcast Corp. - Class A

23,101,514

8,050

Cumulus Media, Inc. - Class A#

77,360

176,235

Facebook, Inc. - Class A^#

57,290,474

32,360

Netflix, Inc.#

16,615,889

205,085

EUR

Orange, SA

2,553,967

149,335

Walt Disney Company#

27,779,297

 

242,966,010

 

Consumer Discretionary (10.3%) 

32,615

Amazon.com, Inc.^#

113,089,903

59,260

Carnival Corp.#

1,656,910

825,570

Ford Motor Company#

9,527,078

243,463

General Motors Company

13,930,953

94,175

Home Depot, Inc.^

30,481,622

NUMBER OF
SHARES

 

 

 

VALUE

38,550

Lennar Corp. - Class A

$

3,993,780

69,245

Lowe’s Companies, Inc.^

13,589,331

62,500

McDonald’s Corp.

14,755,000

245,080

MGM Resorts International

9,979,658

162,800

NIKE, Inc. - Class B^

21,590,536

44,300

Royal Caribbean Cruises, Ltd.^#

3,851,885

77,770

Starbucks Corp.

8,903,887

56,455

Target Corp.

11,700,863

14,925

Tesla, Inc.^#

10,588,392

143,900

TJX Companies, Inc.^

10,216,900

 

277,856,698

 

Consumer Staples (5.4%) 

58,750

Altria Group, Inc.

2,805,312

459,960

Coca-Cola Company^

24,828,641

41,820

Costco Wholesale Corp.

15,560,804

250,885

Mondelez International, Inc. - Class A^

15,256,317

112,795

PepsiCo, Inc.

16,260,527

147,500

Philip Morris International, Inc.

14,012,500

203,745

Procter & Gamble Company^

27,183,658

86,605

Sysco Corp.

7,338,042

52,650

Walgreens Boots Alliance, Inc.

2,795,715

154,510

Walmart, Inc.^

21,617,494

 

147,659,010

 

Energy (3.7%) 

4,679

Bonanza Creek Energy, Inc.#

154,828

475,000

BP, PLC

11,951,000

47,998

Calfrac Well Services, Ltd.#

131,515

3,547

Chesapeake Energy Corp.#

161,637

237,650

Chevron Corp.^

24,494,585

11,032

Denbury, Inc.#

600,251

70,400

Energy Transfer, LP

606,144

76,005

Enterprise Products Partners, LP

1,748,875

7,920

EP Energy Corp.#&

653,400

431,180

Exxon Mobil Corp.

24,680,743

16,000

GasLog, Ltd.

92,960

126,365

Hess Corp.^

9,415,456

232,940

Kinder Morgan, Inc.

3,971,627

72,999

Lonestar Resources US, Inc.#&

534,353

21,360

Magellan Midstream Partners, LP

999,007

100,220

Marathon Petroleum Corp.

5,577,243

132,452

Mcdermott International, Ltd.#

59,603

3,909

Oasis Petroleum, Inc.

303,417

26,500

Pioneer Natural Resources Company

4,076,495

156,200

Schlumberger, Ltd.

4,225,210

31,050

Targa Resources Corp.

1,077,125

33,540

Valero Energy Corp.

2,480,618

18,259

Weatherford International, PLC#

193,545

15,665

Whiting Petroleum Corp.#

627,697


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   25

NUMBER OF
SHARES

 

 

 

VALUE

10,000

Williams Companies, Inc.^

$

243,600

 

99,060,934

 

Financials (10.6%) 

35,430

Affiliated Managers Group, Inc.^

5,710,253

65,730

American Express Company

10,079,696

346,890

American International Group, Inc.

16,806,820

29,983

Assurant, Inc.

4,665,355

1,019,405

Bank of America Corp.~

41,316,485

71,870

Bank of New York Mellon Corp.

3,584,876

10,715

BlackRock, Inc.

8,778,800

90,405

Charles Schwab Corp.^

6,364,512

46,700

Chubb, Ltd.~

8,013,253

344,010

Citigroup, Inc.^

24,507,272

125,000

Discover Financial Services

14,250,000

51,500

Goldman Sachs Group, Inc.

17,945,175

33,700

Intercontinental Exchange, Inc.

3,966,827

273,910

JPMorgan Chase & Company^

42,130,097

226,225

KeyCorp^

4,922,656

132,475

Marsh & McLennan Companies, Inc.

17,976,857

290,930

Morgan Stanley

24,016,271

43,760

Northern Trust Corp.

4,979,888

157,631

Starwood Property Trust, Inc.

4,070,032

150,870

US Bancorp

8,954,135

288,350

Wells Fargo & Company^

12,990,168

 

286,029,428

 

Health Care (9.5%) 

139,700

Abbott Laboratories~

16,775,176

55,690

Agilent Technologies, Inc.

7,442,412

18,870

Anthem, Inc.

7,159,089

149,780

Baxter International, Inc.

12,834,648

151,745

Bristol-Myers Squibb Company

9,471,923

26,830

CVS Health Corp.

2,049,812

82,050

Edwards Lifesciences Corp.#

7,837,416

109,850

Eli Lilly & Company

20,077,284

48,980

Gilead Sciences, Inc.

3,108,761

26,400

Humana, Inc.

11,754,336

10,420

Intuitive Surgical, Inc.#

9,013,300

176,230

Johnson & Johnson^

28,677,908

156,340

Medtronic, PLC

20,468,033

251,550

Merck & Company, Inc.

18,740,475

288,990

Pfizer, Inc.

11,169,463

20,295

Stryker Corp.

5,330,076

36,540

Thermo Fisher Scientific, Inc.

17,182,204

105,000

UnitedHealth Group, Inc.^

41,874,000

26,610

Vertex Pharmaceuticals, Inc.#

5,806,302

 

256,772,618

NUMBER OF
SHARES

 

 

 

VALUE

 

Industrials (6.0%) 

546,335

Carrier Global Corp.

$

23,809,279

322,640

CSX Corp.^

32,505,980

14,820

FedEx Corp.

4,302,394

836,550

General Electric Company

10,975,536

104,790

Honeywell International, Inc.^

23,372,362

92,435

J.B. Hunt Transport Services, Inc.

15,779,579

191,469

McDermott International, Inc.#

86,161

37,050

Northrop Grumman Corp.

13,132,002

334,130

Raytheon Technologies Corp.

27,812,981

49,810

Union Pacific Corp.

11,062,303

 

162,838,577

 

Information Technology (24.3%) 

56,335

Accenture, PLC - Class A

16,335,460

35,170

Adobe, Inc.#

17,878,318

44,250

Advanced Micro Devices, Inc.#

3,611,685

1,235,330

Apple, Inc.^~

162,396,482

322,615

Applied Materials, Inc.

42,814,237

247,515

Cisco Systems, Inc.^

12,600,989

117,815

Fidelity National Information Services, Inc.

18,013,913

43,165

Global Payments, Inc.

9,264,504

49,985

Lam Research Corp.

31,013,193

125,850

Marvell Technology, Inc.

5,689,678

72,315

MasterCard, Inc. - Class A

27,628,669

158,425

Micron Technology, Inc.#

13,635,640

593,615

Microsoft Corp.^~

149,697,831

1,520,000

Nokia Corp.#

7,113,600

55,445

NVIDIA Corp.

33,288,069

27,590

PayPal Holdings, Inc.#

7,236,581

66,010

QUALCOMM, Inc.

9,162,188

86,580

Salesforce.com, Inc.#

19,941,105

21,845

ServiceNow, Inc.#

11,061,653

44,000

Skyworks Solutions, Inc.

7,978,520

85,550

Taiwan Semiconductor Manufacturing Company, Ltd. (ADR)

9,987,107

178,525

Visa, Inc. - Class A^

41,696,299

 

658,045,721

 

Materials (2.6%) 

41,160

Celanese Corp. - Class A

6,447,714

410,755

Freeport-McMoRan, Inc.

15,489,571

80,575

Linde, PLC

23,031,558

82,000

Nucor Corp.

6,745,320

96,625

PPG Industries, Inc.

16,546,065

20,585

Vulcan Materials Company

3,669,070

 

71,929,298


Schedule of Investments April 30, 2021 (Unaudited)

26   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

NUMBER OF
SHARES

 

 

 

VALUE

 

Real Estate (1.2%) 

70,930

American Tower Corp.

$

18,070,836

76,060

Crown Castle International Corp.

14,379,904

 

32,450,740

 

Utilities (0.5%) 

99,075

DTE Energy Company^

13,872,482

 

Total Common Stocks
(Cost $1,470,235,837)

2,249,481,516

Warrants (0.1%) # 

Energy (0.1%) 

4,069

Chesapeake Energy Corp.
02/09/26, Strike $
32.13

84,533

3,662

Chesapeake Energy Corp.
02/09/26, Strike $
27.63

83,237

2,260

Chesapeake Energy Corp.^
02/09/26, Strike $
36.18

43,912

6,263

Denbury, Inc.
09/18/25, Strike $32.59

170,354

2,279

Denbury, Inc.
09/18/23, Strike $35.41

47,221

57,470

Mcdermott International, Ltd.
06/30/27, Strike $15.98

6

51,723

Mcdermott International, Ltd.
06/30/27, Strike $12.33

5

47,885

Tidewater, Inc.
11/14/42, Strike $0.00

645,490

16,676

Tidewater, Inc.
11/14/42, Strike $0.00

224,792

 

Total Warrants
(Cost $5,139,246)

1,299,550

 

Exchange-Traded Funds (1.1%)  

Other (1.1%) 

195,550

iShares MSCI EAFE ETF^

15,274,410

5,525

iShares Preferred & Income Securities ETF

213,818

93,905

iShares Russell 2000 Value ETF^

15,248,294

 

Total Exchange-Traded Funds
(Cost $25,215,775)

30,736,522

Preferred Stocks (0.7%)  

Communication Services (0.1%) 

8,482

AT&T, Inc.
4.750%, 02/18/25

215,697

5,000

AT&T, Inc.
5.350%, 11/01/66

131,950

20,000

Qwest Corp.
6.500%, 09/01/56

510,400

4,950

Telephone & Data Systems, Inc.
7.000%, 03/15/60

124,938

NUMBER OF
SHARES

 

 

 

VALUE

58,050

United States Cellular Corp.
6.250%, 09/01/69

$

1,538,325

5,970

United States Cellular Corp.
7.250%, 12/01/64

152,892

 

2,674,202

 

Consumer Discretionary (0.1%) 

4,000

Ford Motor Company
6.200%, 06/01/59

106,320

8,177

Guitar Center, Inc.

983,284

15,125

Qurate Retail, Inc.
8.000%, 03/15/31

1,582,075

 

2,671,679

 

Energy (0.2%) 

13,185

Energy Transfer, LP^‡
7.625%, 08/15/23
3 mo. USD LIBOR + 4.74%

319,868

82,205

NuStar Energy, LP‡
7.625%, 06/15/22
3 mo. USD LIBOR + 5.64%

1,709,864

31,109

NuStar Energy, LP‡
8.500%, 12/15/21
3 mo. USD LIBOR + 6.77%

733,550

55,975

NuStar Logistics, LP‡
6.918%, 01/15/43
3 mo. USD LIBOR + 6.73%

1,353,476

 

4,116,758

 

Financials (0.2%) 

6,000

Affiliated Managers Group, Inc.
4.750%, 09/30/60

153,780

3,787

Allstate Corp.
5.100%, 10/15/24

103,423

4,345

Annaly Capital Management, Inc.‡#
6.950%, 09/30/22
3 mo. USD LIBOR + 4.99%

110,015

11,779

Arch Capital Group, Ltd.
5.250%, 09/29/21

299,069

3,000

B Riley Financial, Inc.
6.000%, 01/31/28

75,270

5,617

Bank of America Corp.
4.375%, 11/03/25

142,616

7,000

Brookfield Finance, Inc.
4.625%, 10/16/80

173,600

16,635

Capital One Financial Corp.
5.000%, 12/01/24

432,510

6,924

Capital One Financial Corp.^
4.800%, 06/01/25

176,216

8,000

CIT Group, Inc.^
5.625%, 12/15/24

211,600

9,155

Citizens Financial Group, Inc.^
5.000%, 01/06/25

237,572


Schedule of Investments April 30, 2021 (Unaudited)

See accompanying Notes to Schedule of Investments

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   27

NUMBER OF
SHARES

 

 

 

VALUE

8,775

CNO Financial Group, Inc.
5.125%, 11/25/60

$

223,938

5,206

Cullen/Frost Bankers, Inc.^
4.450%, 12/15/25

131,920

2,413

First Republic Bank
4.125%, 10/30/25

60,204

2,750

Fulton Financial Corp.
5.125%, 01/15/26

71,060

14,376

JPMorgan Chase & Company^
4.750%, 12/01/24

376,939

9,355

KeyCorp^
5.650%, 12/15/23

253,614

5,735

Legg Mason, Inc.^
5.450%, 09/15/56

145,841

22,890

Morgan Stanley^
4.875%, 01/15/25

606,127

5,400

Oaktree Capital Group, LLC
6.550%, 09/15/23

145,260

8,500

Prudential Financial, Inc.^
4.125%, 09/01/60

218,195

12,000

Selective Insurance Group, Inc.^
4.600%, 12/15/25

300,120

3,006

Signature Bank
5.000%, 12/30/25

77,104

5,250

Spirit Realty Capital, Inc.
6.000%, 10/03/22

140,648

11,500

Truist Financial Corp.
4.750%, 09/01/25

304,980

9,345

US Bancorp^
3.750%, 01/15/26

225,962

25,365

Wells Fargo & Company^
4.750%, 03/15/25

652,641

12,954

WR Berkley Corp.
5.100%, 12/30/59

341,079

2,700

WR Berkley Corp.^
5.700%, 03/30/58

73,332

 

6,464,635

 

Industrials (0.0%) 

6,250

Air Lease Corp.^‡
6.150%, 03/15/24
3 mo. USD LIBOR + 3.65%

167,875

2,500

Brookfield Finance I UK, PLC
4.500%, 11/24/25

61,850

3,750

QVC, Inc.^
6.250%, 11/26/68

95,663

980

WESCO International, Inc.‡
10.625%, 06/22/25
5 year CMT + 10.33%

31,105

 

356,493

 

Real Estate (0.1%) 

5,180

American Homes 4 Rent^
6.250%, 09/19/23

140,844

NUMBER OF
SHARES

 

 

 

VALUE

7,275

Brookfield Property Partners, LP
5.750%, 03/31/25

$

172,418

5,000

Brookfield Property Partners, LP
6.375%, 09/30/24

126,300

5,000

Digital Realty Trust, Inc.^
5.850%, 03/13/24

139,750

5,400

EPR Properties^
5.750%, 11/30/22

136,836

10,500

Federal Realty Investment Trust
5.000%, 09/29/22

279,510

2,985

Global Net Lease, Inc.
6.875%, 11/26/24

79,252

11,000

Kimco Realty Corp.^
5.250%, 12/20/22

293,040

5,300

PS Business Parks, Inc.
5.200%, 12/07/22

140,715

3,880

Public Storage
4.625%, 06/17/25

103,945

 

1,612,610

 

Utilities (0.0%) 

5,000

Algonquin Power & Utilities Corp.‡
6.875%, 10/17/78
3 mo. USD LIBOR + 3.68%

138,000

6,000

Brookfield Renewable Partners, LP
5.250%, 03/31/25

157,860

5,100

DTE Energy Company
5.250%, 12/01/77

133,365

2,800

Southern Company
4.950%, 01/30/80

74,368

 

503,593

 

Total Preferred Stocks
(Cost $18,271,881)

18,399,970

NUMBER OF
CONTRACTS/
NOTIONAL
AMOUNT

 

 

VALUE

Purchased Options (0.2%) # 

Consumer Discretionary (0.0%) 

150
10,641,600

Tesla, Inc.
Call, 09/17/21, Strike $850.00

789,000

 

Information Technology (0.0%) 

1,700
9,780,100

Intel Corp.
Call, 06/18/21, Strike $70.00

15,300

725
6,240,075

Micron Technology, Inc.
Call, 06/18/21, Strike $90.00

226,563

1,500
11,368,500

Oracle Corp.
Call, 06/18/21, Strike $80.00

167,250

 

409,113

 

Other (0.2%) 

765
25,856,235

Invesco QQQ Trust Series
Put, 09/30/21, Strike $320.00

1,020,892


Schedule of Investments April 30, 2021 (Unaudited)

28   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Schedule of Investments

NUMBER OF
CONTRACTS/
NOTIONAL
AMOUNT

 

 

VALUE

4,300
19,900,400

iShares China Large-Cap ETF
Call, 06/18/21, Strike $56.00

$

17,200

 

iShares MSCI Emerging Markets

5,805
31,335,390

Call, 06/18/21, Strike $59.00

66,758

4,760
25,694,480

Call, 06/18/21, Strike $57.00

145,180

2,540
57,122,060

iShares Russell 2000 ETF
Call, 06/18/21, Strike $230.00

1,313,180

 

S&P 500 Index

155
64,808,135

Put, 09/30/21, Strike $4,000.00

2,108,000

74
30,940,658

Put, 05/21/21, Strike $3,750.00

39,960

 

4,711,170

 

Total Purchased Options
(Cost $12,781,729)

5,909,283

 

TOTAL INVESTMENTS (136.6%)
(Cost $2,736,763,799)

3,695,867,009

MANDATORY REDEEMABLE PREFERRED SHARES, AT LIQUIDATION VALUE (-8.9%)

(242,000,000)

 

LIABILITIES, LESS OTHER ASSETS (-27.7%)

(748,155,601)

 

NET ASSETS (100.0%)

$2,705,711,408

WRITTEN OPTION (0.0%) # 

Consumer Discretionary (0.0%) 

150
10,641,600

Tesla, Inc.
Put, 09/17/21, Strike $600.00
(Premium $812,247)

(777,000)

NOTES TO SCHEDULE OF INVESTMENTS

*Securities issued and sold pursuant to a Rule 144A transaction are excepted from the registration requirement of the Securities Act of 1933, as amended. These securities may only be sold to qualified institutional buyers (“QIBs”), such as the Fund. Any resale of these securities must generally be effected through a sale that is registered under the Act or otherwise exempted from such registration requirements.

µSecurity, or portion of security, is held in a segregated account as collateral for note payable aggregating a total value of $55,634,580.

^Security, or portion of security, is on loan.

@In default status and considered non-income producing.

Variable rate security. The rate shown is the rate in effect at April 30, 2021.

&Illiquid security.

~Security, or portion of security, is segregated as collateral (or potential collateral for future transactions) for written options. The aggregate value of such securities is $8,484,422.

¡Bank loans generally are subject to mandatory and/or optional prepayment. As a result, the actual remaining maturity of bank loans may be substantially less than the stated maturities shown.

!This position represents an unsettled loan commitment at period end. Certain details associated with this purchase are not known prior to the settlement date, including coupon rate, which will be adjusted on settlement date.

‡‡Perpetual maturity.

§Securities exchangeable or convertible into securities of one or more entities that are different than the issuer. Each entity is identified in the parenthetical.

**Step coupon security. Coupon changes periodically based upon a predetermined schedule. The rate shown is the rate in effect at April 30, 2021.

#Non-income producing security.

FOREIGN CURRENCY ABBREVIATION

EUREuropean Monetary Unit

Note: Value for securities denominated in foreign currencies is shown in U.S. dollars. The principal amount for such securities is shown in the respective foreign currency. The date on options represents the expiration date of the option contract. The option contract may be exercised at any date on or before the date shown.


See accompanying Notes to Financial Statements 

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   29

Statement of Assets and Liabilities April 30, 2021 (Unaudited)

ASSETS

Investments in securities, at value (cost $2,736,763,799)

$

3,695,867,009

Cash with custodian

81,629,153

Receivables:

Accrued interest and dividends

10,527,017

Investments sold

191,649

Prepaid expenses

865,698

Other assets

250,758

Total assets

3,789,331,284

 

LIABILITIES

Options written, at value (premium $812,247)

777,000

Mandatory Redeemable Preferred Shares ($25 liquidation value per share applicable to 9,680,000 shares authorized,
issued, and outstanding) (net of deferred offering costs of $1,234,477) (Note 7)

240,765,523

Payables:

Notes payable

830,000,000

Distributions payable to Mandatory Redeemable Preferred Shareholders

750,104

Investments purchased

7,316,637

Affiliates:

Investment advisory fees

3,070,467

Deferred compensation to trustees

250,758

Trustees’ fees and officer compensation

17,225

Other accounts payable and accrued liabilities

672,162

Total liabilities

1,083,619,876

NET ASSETS

$

2,705,711,408

 

COMPOSITION OF NET ASSETS

Common stock, no par value, unlimited shares authorized 155,198,255 shares issued and outstanding

$

1,808,678,966

Undistributed net investment income (loss)

(29,859,574

)

Accumulated net realized gain (loss) on investments, foreign currency transactions and written options

(32,253,216

)

Unrealized appreciation (depreciation) of investments, foreign currency translations and written options

959,145,232

NET ASSETS

$

2,705,711,408

Net asset value per common shares based upon 155,198,255 shares issued and outstanding

$

17.43

Statement of Operations Six Months Ended April 30, 2021 (Unaudited)

30   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Financial Statements

INVESTMENT INCOME

Interest

$

16,334,884

Dividends

22,756,668

Dividend taxes withheld

(58,087

)

Total investment income

39,033,465

 

EXPENSES

Investment advisory fees

17,332,805

Interest expense and amortization of offering costs on Mandatory Redeemable Preferred Shares (Notes 1 and 7)

4,982,474

Interest expense on Notes Payable (Note 6)

2,340,858

Fund administration fees

115,339

Printing and mailing fees

108,615

Accounting fees

97,884

Trustees’ fees and officer compensation

75,327

Legal fees

75,050

Audit fees

56,638

Custodian fees

22,448

Registration fees

19,854

Transfer agent fees

15,771

Other

140,720

Total expenses

25,383,783

NET INVESTMENT INCOME (LOSS)

13,649,682

 

REALIZED AND UNREALIZED GAIN (LOSS)

Net realized gain (loss) from:

Investments, excluding purchased options

72,821,619

Purchased options

19,344,001

Foreign currency transactions

(552

)

Written options

(4,150,098

)

Change in net unrealized appreciation/(depreciation) on:

Investments, excluding purchased options

635,699,327

Purchased options

(5,576,196

)

Foreign currency translations

6,583

Written options

(215,033

)

NET GAIN (LOSS)

717,929,651

NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS

$

731,579,333

Statements of Changes in Net Assets

See accompanying Notes to Financial Statements 

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   31

 

(Unaudited)
Six Months
Ended
April 30,
2021

 

Year
Ended
October 31,
2020

 

OPERATIONS

Net investment income (loss)

$

13,649,682

$

32,781,448

Net realized gain (loss)

88,014,970

140,312,979

Change in unrealized appreciation/(depreciation)

629,914,681

51,373,688

Net increase (decrease) in net assets applicable to common shareholders resulting from operations

731,579,333

224,468,115

 

DISTRIBUTIONS TO COMMON SHAREHOLDERS

Total distributions

(90,699,927

)

(167,275,672

)

Net decrease in net assets from distributions to common shareholders

(90,699,927

)

(167,275,672

)

 

CAPITAL STOCK TRANSACTIONS

Reinvestment of distributions resulting in the issuance of stock

3,813,199

3,117,481

Net increase (decrease) in net assets from capital stock transactions

3,813,199

3,117,481

TOTAL INCREASE (DECREASE) IN NET ASSETS

644,692,605

60,309,924

 

NET ASSETS

Beginning of period

$

2,061,018,803

$

2,000,708,879

End of period

$

2,705,711,408

$

2,061,018,803

Statement of Cash Flows

32   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

See accompanying Notes to Financial Statements

 

(Unaudited)
Six Months
Ended
April 30,
2021

 

Year
Ended
October 31,
2020

 

CASH FLOWS FROM OPERATING ACTIVITIES:

Net increase/(decrease) in net assets from operations

$

731,579,333

$

224,468,115

Adjustments to reconcile net increase/(decrease) in net assets from operations to net cash provided by
operating activities:

Purchase of investment securities, including purchased options

(515,326,374

)

(1,147,871,335

)

Net proceeds from disposition of short term investments

24,076,541

54,479,268

Proceeds paid on closing written options

(7,264,632

)

(2,181,539

)

Proceeds from disposition of investment securities, including purchased options

521,571,442

1,186,141,464

Premiums received from written options

2,955,780

7,283,938

Amortization and accretion of fixed-income securities

(37,039

)

(731,840

)

Amortization of offering costs on Mandatory Redeemable Preferred Shares

218,663

473,905

Net realized gains/losses from investments, excluding purchased options

(72,823,693

)

(152,465,787

)

Net realized gains/losses from purchased options

(19,344,001

)

16,279,642

Net realized gains/losses from written options

4,150,098

(4,131,399

)

Change in unrealized appreciation or depreciation on investments, excluding purchased options

(635,699,327

)

(47,282,913

)

Change in unrealized appreciation or depreciation on purchased options

5,576,196

(3,830,811

)

Change in unrealized appreciation or depreciation on written options

215,033

(250,280

)

Net change in assets and liabilities:

(Increase)/decrease in assets:

Accrued interest and dividends receivable

1,195,417

(228,863

)

Prepaid expenses

(12,846

)

54,185

Other assets

(55,045

)

5,431

Increase/(decrease) in liabilities:

Payables to affiliates

491,565

171,237

Other accounts payable and accrued liabilities

30,696

(1,156,595

)

Net cash provided by/(used in) operating activities

$

41,497,807

$

129,225,823

 

CASH FLOWS FROM FINANCING ACTIVITIES:

Distributions to shareholders

(86,886,728

)

(164,158,191

)

(Decrease)/Increase in Distributions to Mandatory Redeemable Preferred Shareholders

(52,637

)

Offering costs on Mandatory Redeemable Preferred Shares

(23,319

)

(78,894

)

Proceeds from note payable

127,000,000

35,000,000

Net cash provided by/(used in) financing activities

$

40,037,316

$

(129,237,085

)

Net increase/(decrease) in cash

$

81,535,123

$

(11,262

)

Cash and restricted cash at beginning of period

$

94,030

$

105,292

Cash at end of period

$

81,629,153

$

94,030

Supplemental disclosure

Cash paid for interest on Notes Payable

$

2,345,390

$

9,207,849

Cash paid for interest expense on Mandatory Redeemable Preferred Shares

$

5,035,111

$

10,106,805

Non-cash financing activities not included herein consists of reinvestment of dividends and distributions

$

3,813,199

$

3,117,481

 

The following table provides a reconciliation of cash and restricted cash reported within the Statement of Assets and Liabilities that sum to the total of the same such amounts shown in the Statements of Cash Flows.

 

Cash with custodian

81,629,153

94,030

Total cash and restricted cash at period end

$

81,629,153

$

94,030

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   33

Notes to Financial Statements (Unaudited)

Note 1 – Organization and Significant Accounting Policies

Organization. Calamos Strategic Total Return Fund (the “Fund”) was organized as a Delaware statutory trust on December 31, 2003 and is registered under the Investment Company Act of 1940 (the “1940 Act”) as a diversified, closed-end management investment company. The Fund commenced operations on March 26, 2004.

The Fund’s investment strategy is to provide total return through a combination of capital appreciation and current income. Under normal circumstances, the Fund will invest primarily in common and preferred stocks, convertible securities and income-producing securities such as investment grade and below investment grade (high yield/high risk) debt securities. The Fund, under normal circumstances, will invest at least 50% of its managed assets in equity securities (including securities that are convertible into equity securities). The Fund may invest up to 35% of its managed assets in securities of foreign issuers, including debt and equity securities of corporate issuers and debt securities of government issuers in developed and emerging markets. The Fund may invest up to 15% of its managed assets in securities of foreign issuers in emerging markets. “Managed assets” means the Fund’s total assets (including any assets attributable to any leverage that may be outstanding) minus total liabilities (other than debt representing financial leverage).

Significant Accounting Policies. The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP), and the Fund is considered an investment company under U.S. GAAP and follows the accounting and reporting guidance applicable to investment companies. Under U.S. GAAP, management is required to make certain estimates and assumptions at the date of the financial statements and actual results may differ from those estimates. Subsequent events, if any, through the date that the financial statements were issued, have been evaluated in the preparation of the financial statements. The following summarizes the significant accounting policies of the Fund:

In March 2017, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities (“ASU 2017-08”). ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium. The Fund adopted ASU2017-08 as of January 1, 2020, with no material impact on the Fund’s financial statements.

In October 2020, FASB issued ASU No. 2020-08, Codification Improvements to Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs (“ASU 2020-08”). ASU 2020-08 was issued to clarify how to amortize premiums for debt securities where there are bonds with multiple call dates. The amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Management has evaluated the impact of this guidance within the Fund’s financial statements and has determined the adoption of ASU 2020-08 will have no impact on the Fund’s financial statements.

Fund Valuation. The valuation of the Fund’s investments is in accordance with policies and procedures adopted by and under the ultimate supervision of the board of trustees.

Fund securities that are traded on U.S. securities exchanges, except option securities, are valued at the official closing price, which is the last current reported sales price on its principal exchange at the time each Fund determines its net asset value (“NAV”). Securities traded in the over-the-counter market and quoted on The NASDAQ Stock Market are valued at the NASDAQ Official Closing Price, as determined by NASDAQ, or lacking a NASDAQ Official Closing Price, the last current reported sale price on NASDAQ at the time the Fund determines its NAV. When a last sale or closing price is not available, equity securities, other than option securities, that are traded on a U.S. securities exchange and other equity securities traded in the over-the-counter market are valued at the mean between the most recent bid and asked quotations on its principal exchange in accordance with guidelines adopted by the board of trustees. Each option security traded on a U.S. securities exchange is valued at the mid-point of the consolidated bid/ask quote for the option security, also in accordance with guidelines adopted by the board of trustees. Each over-the-counter option that is not traded through the Options Clearing Corporation is valued either by an independent pricing agent approved by the board of trustees or based on a quotation provided by the counterparty to such option under the ultimate supervision of the board of trustees.

Fixed-income securities, bank loans, certain convertible preferred securities, and non-exchange traded derivatives are normally valued by independent pricing services or by dealers or brokers who make markets in such securities. Valuations of such fixed-income securities, bank loans, certain convertible preferred securities, and non-exchange traded derivatives consider yield or price of equivalent securities of comparable quality, coupon rate, maturity, type of issue, trading characteristics and other market data and do not rely exclusively upon exchange or over-the-counter prices.

34   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

Notes to Financial Statements (Unaudited)

Trading on European and Far Eastern exchanges and over-the-counter markets is typically completed at various times before the close of business on each day on which the New York Stock Exchange (“NYSE”) is open. Each security trading on these exchanges or in over-the-counter markets may be valued utilizing a systematic fair valuation model provided by an independent pricing service approved by the board of trustees. The valuation of each security that meets certain criteria in relation to the valuation model is systematically adjusted to reflect the impact of movement in the U.S. market after the foreign markets close. Securities that do not meet the criteria, or that are principally traded in other foreign markets, are valued as of the last reported sale price at the time the Fund determines its NAV, or when reliable market prices or quotations are not readily available, at the mean between the most recent bid and asked quotations as of the close of the appropriate exchange or other designated time. Trading of foreign securities may not take place on every NYSE business day. In addition, trading may take place in various foreign markets on Saturdays or on other days when the NYSE is not open and on which the Fund’s NAV is not calculated.

If the pricing committee determines that the valuation of a security in accordance with the methods described above is not reflective of a fair value for such security, the security is valued at a fair value by the pricing committee, under the ultimate supervision of the board of trustees, following the guidelines and/or procedures adopted by the board of trustees.

The Fund also may use fair value pricing, pursuant to guidelines adopted by the board of trustees and under the ultimate supervision of the board of trustees, if trading in the security is halted or if the value of a security it holds is materially affected by events occurring before the Fund’s pricing time but after the close of the primary market or exchange on which the security is listed. Those procedures may utilize valuations furnished by pricing services approved by the board of trustees, which may be based on market transactions for comparable securities and various relationships between securities that are generally recognized by institutional traders, a computerized matrix system, or appraisals derived from information concerning the securities or similar securities received from recognized dealers in those securities.

When fair value pricing of securities is employed, the prices of securities used by a Fund to calculate its NAV may differ from market quotations or official closing prices. There can be no assurance that the Fund could purchase or sell a portfolio security at the price used to calculate the Fund’s net asset value (“NAV”).

Investment Transactions. Investment transactions are recorded on a trade date basis as of April 30, 2021. Net realized gains and losses from investment transactions are reported on an identified cost basis. Interest income is recognized using the accrual method and includes accretion of original issue and market discount and amortization of premium. Dividend income is recognized on the ex-dividend date, except that certain dividends from foreign securities are recorded as soon as the information becomes available after the ex-dividend date.

Foreign Currency Translation. Values of investments and other assets and liabilities denominated in foreign currencies are translated into U.S. dollars using a rate quoted by a major bank or dealer in the particular currency market, as reported by a recognized quotation dissemination service.

The Fund does not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in market prices of securities held. Such fluctuations are included with the net realized and unrealized gain or loss from investments.

Reported net realized foreign currency gains or losses arise from disposition of foreign currency, the difference in the foreign exchange rates between the trade and settlement dates on securities transactions, and the difference between the amounts of dividends, interest and foreign withholding taxes recorded on the ex-date or accrual date and the U.S. dollar equivalent of the amounts actually received or paid. Net unrealized foreign exchange gains and losses arise from changes (due to the changes in the exchange rate) in the value of foreign currency and other assets and liabilities denominated in foreign currencies held at period end.

Allocation of Expenses Among Funds. Expenses directly attributable to the Fund are charged to the Fund; certain other common expenses of Calamos Advisors Trust, Calamos Investment Trust, Calamos Convertible Opportunities and Income Fund, Calamos Convertible and High Income Fund, Calamos Strategic Total Return Fund, Calamos Global Total Return Fund, Calamos Global Dynamic Income Fund, Calamos Dynamic Convertible and Income Fund, and Calamos Long/Short Equity & Dynamic Income Trust are allocated proportionately among each Fund to which the expenses relate in relation to the net assets of each Fund or on another reasonable basis.

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   35

Notes to Financial Statements (Unaudited)

Income Taxes. No provision has been made for U.S. income taxes because the Fund’s policy is to continue to qualify as a regulated investment company under the Internal Revenue Code of 1986, as amended, and distribute to shareholders substantially all of the Fund’s taxable income and net realized gains.

Dividends and distributions paid to common shareholders are recorded on the ex-dividend date. The amount of dividends and distributions from net investment income and net realized capital gains is determined in accordance with federal income tax regulations, which may differ from U.S. generally accepted accounting principles. To the extent these “book/tax” differences are permanent in nature, such amounts are reclassified within the capital accounts based on their federal tax-basis treatment. These differences are primarily due to differing treatments for foreign currency transactions, contingent payment debt instruments and methods of amortizing and accreting for fixed-income securities. The financial statements are not adjusted for temporary differences.

Distributions to holders of mandatory redeemable preferred shares (“MRPS”) as described in Note 7 are accrued on a daily basis and are treated as an operating expense due to the fixed term of the obligation. The distributions are shown on the Statement of Operations as Interest expense and amortization of offering costs on Mandatory Redeemable Preferred Shares. For tax purposes, the distributions made to the holders of the MRPS are treated as dividends.

The Fund recognized no liability for uncertain tax positions. A reconciliation is not provided as the beginning and ending amounts of unrecognized benefits are zero, with no interim additions, reductions or settlements. Tax years 2018 - 2020 remain subject to examination by the U.S. and the State of Illinois tax jurisdictions.

Indemnifications. Under the Fund’s organizational documents, the Fund is obligated to indemnify its officers and trustees against certain liabilities incurred by them by reason of having been an officer or trustee of the Fund. In addition, in the normal course of business, the Fund may enter into contracts that provide general indemnifications to other parties. The Fund’s maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the Fund that have not yet occurred. Currently, the Fund’s management expects the risk of material loss in connection to a potential claim to be remote.

Note 2 – Investment Adviser and Transactions With Affiliates Or Certain Other Parties

Pursuant to an investment advisory agreement with Calamos Advisors LLC (“Calamos Advisors”), the Fund pays an annual fee, payable monthly, equal to 1.00% based on the average weekly managed assets.

The Fund reimburses Calamos Advisors for a portion of compensation paid to the Fund’s Chief Compliance Officer. This compensation is reported as part of the “Trustees’ fees and officer compensation” expense on the Statement of Operations.

The Fund has adopted a deferred compensation plan (the “Plan”). Under the Plan, a trustee who is not an “interested person” (as defined in the 1940 Act) and has elected to participate in the Plan (a “participating trustee”) may defer receipt of all or a portion of their compensation from the Fund. The deferred compensation payable to the participating trustee is credited to the trustee’s deferral account as of the business day such compensation would have been paid to the participating trustee. The value of amounts deferred for a participating trustee is determined by reference to the change in value of Class I shares of one or more funds of Calamos Investment Trust designated by the participant. The value of the account increases with contributions to the account or with increases in the value of the measuring shares, and the value of the account decreases with withdrawals from the account or with declines in the value of the measuring shares. Deferred compensation of $250,758 is included in “Other assets” on the Statement of Assets and Liabilities at April 30, 2021. The Fund’s obligation to make payments under the Plan is a general obligation of the Fund and is included in “Payable for deferred compensation to trustees” on the Statement of Assets and Liabilities at April 30, 2021.

Note 3 – Investments

The cost of purchases and proceeds from sales of long-term investments for the period ended April 30, 2021 were as follows:

 

U.S. Government
Securities

 

Other

Cost of purchases 

$

$451,553,674

Proceeds from sales

440,867,359

36   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

Notes to Financial Statements (Unaudited)

The cost basis of investments for federal income tax purposes at April 30, 2021 was as follows*:

Cost basis of investments

$2,735,951,552

Gross unrealized appreciation

1,112,876,577

Gross unrealized depreciation

(153,738,120

)

Net unrealized appreciation (depreciation)

$959,138,457

*Because tax adjustments are calculated annually, the above table does not reflect tax adjustments. For the previous fiscal year’s federal income tax information, please refer to the Notes to Financial Statements section in the Fund’s most recent annual report.

Note 4 – Income Taxes

The Fund intends to make monthly distributions from its income available for distribution, which consists of the Fund’s dividends and interest income after payment of Fund expenses, and net realized gains on stock investments. At least annually, the Fund intends to distribute all or substantially all of its net realized capital gains, if any. Distributions are recorded on the ex-dividend date. The Fund distinguishes between distributions on a tax basis and a financial reporting basis. Accounting principles generally accepted in the United States of America require that only distributions in excess of tax basis earnings and profits be reported in the financial statements as a return of capital. Permanent differences between book and tax accounting relating to distributions are reclassified to paid-in-capital. For tax purposes, distributions from short-term capital gains are considered to be from ordinary income. Distributions in any year may include a return of capital component.

The tax character of distributions for the period ended April 30, 2021 will be determined at the end of the Fund’s current fiscal year.

Distributions for the year ended October 31, 2020 were characterized for federal income tax purposes as follows:

 

YEAR ENDED
OCTOBER 31, 2020

Distributions paid from:

Ordinary income

$76,244,344

Long-term capital gains

100,664,228

Return of capital

As of October 31, 2020, the components of accumulated earnings/(loss) on a tax basis were as follows:

Undistributed ordinary income

$

Undistributed capital gains

14,945,202

Total undistributed earnings

14,945,202

Accumulated capital and other losses

(844,883

)

Net unrealized gains/(losses)

238,975,675

Total accumulated earnings/(losses)

253,075,994

Other

3,077,042

Paid-in-capital

1,804,865,767

Net assets applicable to common shareholders

$2,061,018,803

Note 5 – Derivative Instruments

Foreign Currency Risk. The Fund may engage in portfolio hedging with respect to changes in currency exchange rates by entering into forward foreign currency contracts to purchase or sell currencies. A forward foreign currency contract is a commitment to purchase or sell a foreign currency at a future date at a negotiated forward rate. Risks associated with such contracts include, among other things, movement in the value of the foreign currency relative to the U.S. dollar and the ability of the counterparty to perform.

To mitigate the counterparty risk, the Fund may enter into an International Swaps and Derivatives Association, Inc. Master Agreement (“ISDA Master Agreement”) or similar agreement with its derivative contract counterparties. An ISDA Master Agreement is a bilateral agreement between the Fund and a counterparty that governs over-the-counter derivatives and foreign exchange contracts and typically contains, among other things, collateral posting terms and netting provisions in the event of a default and/or termination event. Under an ISDA Master Agreement, the Fund may, under certain circumstances, offset with the counterparty certain derivative financial instrument’s payables and/or receivables with collateral held and/or posted and create one single net payment. The provisions of the ISDA Master Agreement typically permit a single net payment in the event of default (close-out netting), including the bankruptcy or

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   37

Notes to Financial Statements (Unaudited)

insolvency of the counterparty. Generally, collateral is exchanged between the Fund and the counterparty and the amount of collateral due from the Fund or to a counterparty has to exceed a minimum transfer amount threshold before a transfer has to be made. To the extent amounts due to the Fund from its counterparties are not fully collateralized, contractually or otherwise, the Fund bears the risk of loss from counterparty nonperformance. When a Fund is required to post collateral under the terms of a derivatives transaction and master netting agreement, the Fund’s custodian holds the collateral in a segregated account, subject to the terms of a tri-party agreement among the Fund, the custodian and the counterparty.  The master netting agreement and tri-party agreement provide, in relevant part, that the counterparty may have rights to the amounts in the segregated account in the event that the Fund defaults in its obligation with respect to the derivative instrument that is subject to the collateral requirement.  When a counterparty is required to post collateral under the terms of a derivatives transaction and master netting agreement, the counterparty delivers such amount to the Fund’s custodian.  The master netting agreement provides, in relevant part, that the Fund may have rights to such collateral in the event that the counterparty defaults in its obligation with respect to the derivative instrument that is subject to the collateral requirement. Generally before a default, neither the Fund nor the counterparty may resell, rehypothecate, or repledge any collateral that it receives.

For financial reporting purposes, the Fund does not offset derivative assets and derivative liabilities that are subject to netting arrangements in the Statement of Assets and Liabilities. The net unrealized gain, if any, represents the credit risk to the Fund on a forward foreign currency contract. The contracts are valued daily at forward foreign exchange rates. The Fund realizes a gain or loss when a position is closed or upon settlement of the contracts. There were no open forward foreign currency contracts at April 30, 2021.

Equity Risk. The Fund may engage in option transactions and in doing so achieves similar objectives to what it would achieve through the sale or purchase of individual securities. A call option, upon payment of a premium, gives the purchaser of the option the right to buy, and the seller of the option the obligation to sell, the underlying security, index or other instrument at the exercise price. A put option gives the purchaser of the option, upon payment of a premium, the right to sell, and the seller the obligation to buy, the underlying security, index, or other instrument at the exercise price.

To seek to offset some of the risk of a potential decline in value of certain long positions, the Fund may also purchase put options on individual securities, broad-based securities indexes or certain exchange-traded funds (“ETFs”). The Fund may also seek to generate income from option premiums by writing (selling) options on a portion of the equity securities (including securities that are convertible into equity securities) in the Fund’s portfolio, on broad-based securities indexes, or certain ETFs.

When a Fund purchases an option, it pays a premium and an amount equal to that premium is recorded as an asset. When a Fund writes an option, it receives a premium and an amount equal to that premium is recorded as a liability. The asset or liability is adjusted daily to reflect the current market value of the option. If an option expires unexercised, the Fund realizes a gain or loss to the extent of the premium received or paid. If an option is exercised, the premium received or paid is recorded as an adjustment to the proceeds from the sale or the cost basis of the purchase. The difference between the premium and the amount received or paid on a closing purchase or sale transaction is also treated as a realized gain or loss. The cost of securities acquired through the exercise of call options is increased by premiums paid. The proceeds from securities sold through the exercise of put options are decreased by the premiums paid. Gain or loss on written options and purchased options is presented separately on the Statement of Operations as net realized gain or loss on written options and net realized gain or loss on purchased options, respectively.

Options written by the Fund do not typically give rise to counterparty credit risk since options written obligate the Fund and not the counterparty to perform. Exchange traded purchased options have minimal counterparty credit risk to the Fund since the exchange’s clearinghouse, as counterparty to such instruments, guarantees against a possible default.

As of April 30, 2021, the Fund had outstanding purchased options and/or written options as listed on the Schedule of Investments.

Interest Rate Risk. The Fund may engage in interest rate swaps primarily to hedge the interest rate risk on the Fund’s borrowings (see Note 6 - Notes Payable). An interest rate swap is a contract that involves the exchange of one type of interest rate for another type of interest rate. If interest rates rise, resulting in a diminution in the value of the Fund’s portfolio, the Fund would receive payments under the swap that would offset, in whole or in part, such diminution in value; if interest rates fall, the Fund would likely lose money on the swap transaction. Unrealized gains are reported as an asset, and unrealized losses are reported as a liability on the Statement of Assets and Liabilities. The change in value of swaps, including accruals of periodic amounts of interest to be paid or received on swaps, is reported as change in net unrealized appreciation/depreciation on interest rate swaps in the Statement of Operations. A realized gain or loss is recorded in net realized gain (loss) on interest rate swaps in the Statement of Operations upon payment or receipt of a

38   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

Notes to Financial Statements (Unaudited)

periodic payment or termination of the swap agreements. Swap agreements are stated at fair value. Notional principal amounts are used to express the extent of involvement in these transactions, but the amounts potentially subject to credit risk are much smaller. In connection with these contracts, securities may be identified as collateral in accordance with the terms of the respective swap contracts in the event of default or bankruptcy of the Fund. Please see the disclosure regarding ISDA Master Agreements under Foreign Currency Risk within this note.

Premiums paid to or by a Fund are accrued daily and included in realized gain (loss) when paid on swaps in the accompanying Statement of Operations. The contracts are marked-to-market daily based upon third party vendor valuations and changes in value are recorded as unrealized appreciation (depreciation). Gains or losses are realized upon early termination of the contract. Risks may exceed amounts recognized in the Statement of Assets and Liabilities. These risks include changes in the returns of the underlying instruments, failure of the counterparties to perform under the contracts’ terms, counterparty’s creditworthiness, and the possible lack of liquidity with respect to the contracts.

As of April 30, 2021, the Fund had no outstanding interest rate swap agreements.

As of April 30, 2021, the Fund had outstanding derivative contracts which are reflected on the Statement of Assets and Liabilities as follows:

 

ASSET
DERIVATIVES

 

LIABILITY
DERIVATIVES

Gross amounts at fair value:

Purchased options(1)

$5,909,283

$

Written options(2)

 

777,000

 

$5,909,283

 

$777,000

(1)Generally, the Statement of Assets and Liabilities location for “Purchased options” is “Investments in securities, at Value.”

(2)Generally, the Statement of Assets and Liabilities location for “Written options” is “Options written, at value.”

For the period ended April 30, 2021, the volume of derivative activity for the Fund is reflected below:*

 

Volume

Purchased options 

65,989

Written options 

5,898

*Activity during the period is measured by opened number of contracts for options purchased or written.

Note 6 – Notes Payable

The Fund has entered into an Amended and Restated Liquidity Agreement (the “SSB Agreement”) with State Street Bank and Trust Company (“SSB”) that allows the Fund to borrow up to a limit of $1,130.0 million, as well as engage in securities lending and securities repurchase transactions. Borrowings under the SSB Agreement are secured by assets of the Fund that are held with the Fund’s custodian in a separate account (the “pledged collateral”). Interest on the SSB Agreement is charged on the drawn amount at the rate of Overnight LIBOR plus .80%. A commitment fee of .10% is payable on any undrawn balance. For the period ended April 30, 2021, the average borrowings under the Agreement were $785.4 million. For the period ended April 30, 2021, the average interest rate was 0.61%. As of April 30, 2021, the amount of total outstanding borrowings was $830.0 million, which approximates fair value. The interest rate applicable to the borrowings on April 30, 2021 was 0.59%.

Under the terms of the SSB Agreement, all securities lent through SSB must be secured continuously by collateral received in cash. Cash collateral held by SSB on behalf of a Fund may be credited against the amounts borrowed under the SSB Agreement. Under the terms of the SSB Agreement, SSB will return the value of the collateral to the borrower at the termination of the selected securities loan(s). When collateral is returned, SSB may offset the shortfall to the amount lent to the Fund under the SSB Agreement by either lending other securities of the Fund or replacing such amount through direct loans from SSB, without notice to or consent from the Fund and does not change the amount borrowed by the Fund. The cash collateral credits against the amounts borrowed are not reflected separately in the Statement of Assets and Liabilities but as a component of the Notes Payable. Under the terms of the SSB Agreement, the Fund will receive a rebate payment related to the securities lending and/or securities repurchase transactions which is reflected in interest expense in the Statement of Operations. The Fund has the right to call a loan and obtain the securities loaned at any time. As of April 30, 2021, approximately $762.6 million of securities were on loan ($120.4 million of fixed-income securities

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   39

Notes to Financial Statements (Unaudited)

and $642.2 million of equity securities) under the SSB Agreement which are reflected in the Investment in securities, at value on the Statement of Assets and Liabilities. The borrowings are categorized as Level 2 within the fair value hierarchy.

Note 7 – Mandatory Redeemable Preferred Shares

On September 6, 2017, the Fund issued 9,680,000 mandatory redeemable preferred shares (“MRPS”) with an aggregate liquidation preference of $242.0 million. Offering costs incurred by the Fund in connection with the MRPS issuance are aggregated with the outstanding liability and are being amortized to Interest expense and amortization of offering costs on Mandatory Redeemable Preferred Shares over the respective life of each series of MRPS and shown in the Statement of Operations.

The MRPS are divided into three series with different mandatory redemption dates and dividend rates. The table below summarizes the key terms of each series of the MRPS at April 30, 2021.

Series

Term
Redemption
Date

Dividend
Rate

Shares
(000’s)

Liquidation
Preference
Per Share

 

Aggregate
Liquidation
Preference

Series A

9/06/22

3.70%

3,220

$25

$80,500,000

Series B

9/06/24

4.00%

3,220

$25

$80,500,000

Series C

9/06/27

4.24%

3,240

$25

$81,000,000

 

Total

$242,000,000

The MRPS are not listed on any exchange or automated quotation system. The MRPS are considered debt of the issuer; therefore, the liquidation preference, which approximates fair value of the MRPS, is recorded as a liability in the Statement of Assets and Liabilities net of deferred offering costs. The MRPS are categorized as Level 2 within the fair value hierarchy.

Previously, the MRPS had been assigned a rating of “AA” by Fitch Ratings, Inc. (“Fitch”). As of December 17, 2020, Kroll Bond Rating Agency LLC (“Kroll”) replaced Fitch as the rating agency for the MRPS. The MRPS have been assigned a rating of `AA-’ by Kroll. If the ratings of the MRPS are downgraded, the Fund’s dividend expense may increase, as described below.

Holders of MRPS are entitled to receive monthly cumulative cash dividends payable on the first business day of each month. The MRPS currently are rated “AA-” by Kroll. If on the first day of a monthly dividend period the MRPS of any class are rated lower than “A” by Fitch (or lower than the equivalent of such rating by any other rating agency providing a rating pursuant to the request of the Fund, such as Kroll), the dividend rate for such period shall be increased by 0.5%, 2.0% or 4.0% according to an agreed upon schedule. The MRPS’ dividend rate is also subject to increase during periods when the Fund has not made timely payments to MRPS holders and/or the MRPS do not have a current credit rating, subject to various terms and conditions. Dividends accrued and paid to the shareholders of MRPS are included in “Interest expense and amortization of offering costs on Mandatory Redeemable Preferred Shares” within the Statement of Operations.

The MRPS rank junior to the Fund’s borrowings under the SSB Agreement and senior to the Fund’s outstanding common stock. The Fund may, at its option, subject to various terms and conditions, redeem the MRPS, in whole or in part, at the liquidation preference amount plus all accumulated but unpaid dividends, plus a make whole premium equal to the discounted value of the remaining scheduled payments. Each class of MRPS is subject to mandatory redemption on the term redemption date specified in the table above. Periodically, the Fund is subject to an overcollateralization test based on applicable rating agency criteria (the “OC Test”) and an asset coverage test with respect to its outstanding senior securities (the “AC Test”). The Fund may be required to redeem MRPS before their term redemption date if it does not comply with one or both tests. So long as any MRPS are outstanding, the Fund may not declare, pay or set aside for payment cash dividends or other distributions on shares of its common stock unless (1) the Fund has satisfied the OC Test on at least one testing date in the preceding 65 days, (2) immediately after such transaction, the Fund would comply with the AC Test, (3) full cumulative dividends on the MRPS due on or prior to the date of such transaction have been declared and paid and (4) the Fund has redeemed all MRPS required to have been redeemed on such date or has deposited funds sufficient for such redemption, subject to certain grace periods and exceptions.

Except as otherwise required pursuant to the Fund’s governing documents or applicable law, the holders of the MRPS have one vote per share and vote together with the holders of common stock of the Fund as a single class except on matters affecting only the holders of MRPS or the holders of common stock. Pursuant to the 1940 Act, holders of the MRPS have the right to elect at least two trustees of the Fund, voting separately as a class. Except during any time when the Fund has failed to make a dividend or redemption

40   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

payment in respect of MRPS outstanding, the holders of MRPS have agreed to vote in accordance with the recommendation of the board of trustees on any matter submitted to them for their vote or to the vote of shareholders of the Fund generally.

Note 8 – Common Shares

There are unlimited common shares of beneficial interest authorized and 155,198,255 shares outstanding at April 30, 2021. Calamos Advisors did not own any of the outstanding shares at April 30, 2021. Transactions in common shares were as follows:

 

PERIOD ENDED
April 30, 2021

 

YEAR ENDED
October 31, 2020

Beginning shares

154,965,651

154,739,187

Shares sold

Shares issued through reinvestment of distributions

232,604

 

226,464

Ending shares

155,198,255

 

154,965,651

Notice is hereby given in accordance with Section 23(c) of the 1940 Act that the Fund may from time to time purchase its shares of common stock in the open market.

The Fund also may offer and sell common shares from time to time at an offering price equal to or in excess of the net asset value per share of the Fund’s common shares at the time such common shares are initially sold.

Note 9 – Fair Value Measurements

Various inputs are used to determine the value of the Fund’s investments. These inputs are categorized into three broad levels as follows:

Level 1 – Prices are determined using inputs from unadjusted quoted prices from active markets (including securities actively traded on a securities exchange) for identical assets.

Level 2 – Prices are determined using significant observable market inputs other than unadjusted quoted prices, including quoted prices of similar securities, fair value adjustments to quoted foreign securities, interest rates, credit risk, prepayment speeds, and other relevant data.

Level 3 – Prices reflect unobservable market inputs (including the Fund’s own judgments about assumptions market participants would use in determining fair value) when observable inputs are unavailable.

Debt securities are valued based upon evaluated prices received from an independent pricing service or from a dealer or broker who makes markets in such securities. Pricing services utilize various observable market data and as such, debt securities are generally categorized as Level 2. The levels are not necessarily an indication of the risk or liquidity of the Fund’s investments.

The following is a summary of the inputs used in valuing the Fund’s holdings at fair value:

 

 

 

LEVEL 1

 

LEVEL 2

 

LEVEL 3

 

TOTAL

Assets: 

Corporate Bonds

$

$

465,809,908

$

$

465,809,908

Convertible Bonds

610,764,841

610,764,841

Bank Loans

54,139,319

54,139,319

Convertible Preferred Stocks

249,157,278

10,168,822

259,326,100

Common Stocks U.S.

2,246,187,988

739,561

2,246,927,549

Common Stocks Foreign

2,553,967

2,553,967

Warrants

436,474

863,076

1,299,550

Exchange-Traded Funds

30,736,522

30,736,522

Preferred Stocks

17,416,686

983,284

18,399,970

Purchased options

 

5,909,283

 

 

 

5,909,283

Total

$

2,549,844,231

$

1,146,022,778

$

$

3,695,867,009

Liabilities: 

Written options

$

777,000

$

$

$

777,000

Total

$

777,000

$

$

$

777,000

Notes to Financial Statements (Unaudited)

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   41

Financial Highlights

Selected data for a share outstanding throughout each period were as follows:

 

(Unaudited)
Six Months
Ended
April 30,
2021

 

Year Ended October 31,

2020

 

2019

 

2018

 

2017

 

2016

 

PER SHARE OPERATING PERFORMANCE

Net asset value, beginning of period

$13.30

$12.93

$12.25

$12.76

$11.13

$11.67

Income from investment operations:

Net investment income (loss)*

0.09

0.21

0.18

0.16

0.26

0.30

Net realized and unrealized gain (loss)

4.63

1.24

1.49

0.32

2.36

0.15

Total from investment operations

4.72

1.45

1.67

0.48

2.62

0.45

Less distributions to common shareholders from:

Net investment income

(0.24

)

(0.54

)

(0.16

)

(0.48

)

(0.85

)

(0.46

)

Net realized gains

(0.35

)

(0.54

)

(0.83

)

(0.51

)

(0.14

)

(0.16

)

Return of capital

(0.37

)

Total distributions

(0.59

)

(1.08

)

(0.99

)

(0.99

)

(0.99

)

(0.99

)

Premiums from shares sold in at the market offerings

Net asset value, end of period

$17.43

$13.30

$12.93

$12.25

$12.76

$11.13

Market value, end of period

$17.98

$12.80

$13.02

$11.75

$12.33

$9.95

TOTAL RETURN APPLICABLE TO COMMON SHAREHOLDERS

Total investment return based on:(a)

Net asset value

35.90%

12.33%

14.46%

3.81%

25.11%

5.48%

Market value

45.66%

7.36%

20.16%

3.05%

35.23%

7.89%

RATIOS TO AVERAGE NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS

Net expenses(b)

2.07%

(c)

2.45%

3.05%

2.74%

2.09%

1.97%

Net investment income (loss)

1.12%

(c)

1.64%

1.42%

1.25%

2.17%

2.73%

SUPPLEMENTAL DATA

Net assets applicable to common shareholders, end of period (000)

$2,705,711

$2,061,019

$2,000,709

$1,893,000

$1,971,910

$1,719,456

Portfolio turnover rate

13%

36%

26%

27%

65%

31%

Average commission rate paid

$0.0210

$0.0212

$0.0270

$0.0217

$0.0240

$0.0307

Mandatory Redeemable Preferred Shares, at redemption value ($25 per share liquidation preference) (000’s omitted)

$242,000

$242,000

$242,000

$242,000

$242,000

$–

Notes Payable (000’s omitted)

$830,000

$703,000

$668,000

$713,000

$543,000

$682,000

Asset coverage per $1,000 of loan outstanding(d)

$4,551

$4,276

$4,357

$3,995

$5,077

$3,521

Asset coverage per $25 liquidation value per share of Mandatory Redeemable Preferred Shares(e)

$390

$311

$301

$294

$285

$–

*Net investment income calculated based on average shares method.

(a)Total investment return is calculated assuming a purchase of common stock on the opening of the first day and a sale on the closing of the last day of the period reported. Dividends and distributions are assumed, for purposes of this calculation, to be reinvested at prices obtained under the Fund’s dividend reinvestment plan. Total return is not annualized for periods less than one year. Brokerage commissions are not reflected. NAV per share is determined by dividing the value of the Fund’s portfolio securities, cash and other assets, less all liabilities, by the total number of common shares outstanding. The common share market price is the price the market is willing to pay for shares of the Fund at a given time. Common share market price is influenced by a range of factors, including supply and demand and market conditions.

(b)Ratio of net expenses, excluding interest expense on Notes Payable and interest expense and amortization of offering costs on Mandatory Redeemable Preferred Shares, to average net assets was 1.48%, 1.54%, 1.55%, 1.53%, 1.47%, and 1.49%, respectively.

(c)Annualized.

(d)Calculated by subtracting the Fund’s total liabilities (not including Notes payable and Mandatory Redeemable Preferred Shares) from the Fund’s total assets and dividing this by the amount of notes payable outstanding, and by multiplying the result by 1,000.

(e)Calculated by subtracting the Fund’s total liabilities (not including Notes payable and Mandatory Redeemable Preferred Shares) from the Fund’s total assets and dividing this by the amount of Mandatory Redeemable Preferred Shares outstanding, and by multiplying the result by 25.

42   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Trustees of
Calamos Strategic Total Return Fund

Results of Review of Interim Financial Information

We have reviewed the accompanying statement of assets and liabilities, including the schedule of investments, of Calamos Strategic Total Return Fund (the “Fund”) as of April 30, 2021, the related statements of operations, changes in net assets, cash flows, and the financial highlights for the six month period then ended, and the related notes (collectively referred to as the “interim financial information”). Based on our review, we are not aware of any material modifications that should be made to the accompanying interim financial information for it to be in conformity with accounting principles generally accepted in the United States of America.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the statement of changes in net assets of the Fund for the year ended October 31, 2020, and the financial highlights for each of the five years in the period then ended; and in our report dated December 18, 2020, we expressed an unqualified opinion on such statement of changes in net assets and financial highlights.

Basis for Review Results

This interim financial information is the responsibility of the Fund’s management. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our review in accordance with standards of the PCAOB. A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the PCAOB, the objective of which is the expression of an opinion regarding the financial statements and financial highlights taken as a whole. Accordingly, we do not express such an opinion.

June 18, 2021
Chicago, Illinois

We have served as the auditor of one or more Calamos investment companies since 2003.

About Closed-End Funds

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   43

What is a Closed-End Fund?

A closed-end fund is a publicly traded investment company that raises its initial investment capital through the issuance of a fixed number of shares to investors in a public offering. Shares of a closed-end fund are listed on a stock exchange or traded in the over-the-counter market. Like all investment companies, a closed-end fund is professionally managed and offers investors a unique investment solution based on its investment objective approved by the fund’s Board of Directors.

Potential Advantages of Closed-End Fund Investing

Defined Asset Pool Allows Efficient Portfolio Management—Although closed-end fund shares trade actively on a securities exchange, this doesn’t affect the closed-end fund manager because there are no new investors buying into or selling out of the fund’s portfolio.

More Flexibility in the Timing and Price of Trades—Investors can purchase and sell shares of closed-end funds throughout the trading day, just like the shares of other publicly traded securities.

Lower Expense Ratios—The expense ratios of closed-end funds are oftentimes less than those of mutual funds. Over time, a lower expense ratio could enhance investment performance.

Closed-End Structure Makes Sense for Less-Liquid Asset Classes—A closed-end structure makes sense for investors considering less-liquid asset classes, such as high-yield bonds or micro-cap stocks.

Ability to Put Leverage to Work—Closed-end funds may issue senior securities (such as preferred shares or debentures) or borrow money to “leverage” their investment positions.

No Minimum Investment Requirements

OPEN-END MUTUAL FUNDS VERSUS CLOSED-END FUNDS

OPEN-END FUND

CLOSED-END FUND

Issues new shares on an ongoing basis

Generally issues a fixed number of shares

Issues common equity shares

Can issue common equity shares and senior securities such as preferred shares and bonds

Sold at NAV plus any sales charge

Price determined by the marketplace

Sold through the fund’s distributor

Traded in the secondary market

Fund redeems shares at NAV calculated at the close of business day

Fund does not redeem shares

You can purchase or sell common shares of closed-end funds daily. Like any other stock, market price will fluctuate with the market. Upon sale, your shares may have a market price that is above or below net asset value and may be worth more or less than your original investment. Shares of closed-end funds frequently trade at a discount, which is a market price that is below their net asset value.

Leverage creates risks which may adversely affect return, including the likelihood of greater volatility of net asset value and market price of common shares and fluctuations in the variable rates of the leverage financing.

Each open-end or closed-end fund should be evaluated individually. Before investing carefully consider the fund’s investment objectives, risks, charges and expenses.

Managed Distribution Policy

44   CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT

Using a Managed Distribution Policy to Promote Dependable Income and Total Return

The goal of the managed distribution policy is to provide investors a predictable, though not assured, level of cash flow, which can either serve as a stable income stream or, through reinvestment, may contribute significantly to long-term total return.

We understand the importance that investors place on the stability of dividends and their ability to contribute to long-term total return, which is why we have instituted a managed distribution policy for the Fund. Under the policy, monthly distributions paid may include net investment income, net realized short-term capital gains, net realized long-term capital gains and, if necessary, return of capital. There is no guarantee that the Fund will realize capital gains in any given year. Distributions are subject to re-characterization for tax purposes after the end of the fiscal year. All shareholders with taxable accounts will receive written notification regarding the components and tax treatment for distributions via Form 1099-DIV.

Distributions from the Fund are generally subject to Federal income taxes.

Automatic Dividend Reinvestment Plan

Maximizing Investment with an Automatic Dividend Reinvestment Plan

The Automatic Dividend Reinvestment Plan offers a simple, cost-efficient and convenient way to reinvest your dividends and capital gains distributions in additional shares of the Fund, allowing you to increase your investment in the Fund.

Potential Benefits

Compounded Growth: By automatically reinvesting with the Plan, you gain the potential to allow your dividends and capital gains to compound over time.

Potential for Lower Commission Costs: Additional shares are purchased in large blocks, with brokerage commissions shared among all plan participants. There is no cost to enroll in the Plan.

Convenience: After enrollment, the Plan is automatic and includes detailed statements for participants. Participants can terminate their enrollment at any time.

Pursuant to the Plan, unless a shareholder is ineligible or elects otherwise, all dividend and capital gains on common shares distributions are automatically reinvested by Computershare, as agent for shareholders in administering the Plan (“Plan Agent”), in additional common shares of the Fund. Shareholders who elect not to participate in the Plan will receive all dividends and distributions payable in cash paid by check mailed directly to the shareholder of record (or, if the shares are held in street or other nominee name, then to such nominee) by Plan Agent, as dividend paying agent. Shareholders may elect not to participate in the Plan and to receive all dividends and distributions in cash by sending written instructions to the Plan Agent, as dividend paying agent, at: Dividend Reinvestment Department, P.O. BOX 505000, Louisville, KY 40233. Participation in the Plan is completely voluntary and may be terminated or resumed at any time without penalty by giving notice in writing to the Plan Agent; such termination will be effective with respect to a particular dividend or distribution if notice is received prior to the record date for the applicable distribution.

The shares are acquired by the Plan Agent for the participant’s account either (i) through receipt of additional common shares from the Fund (“newly issued shares”) or (ii) by purchase of outstanding common shares on the open market (“open-market purchases”) on the NASDAQ or elsewhere. If, on the payment date, the net asset value per share of the common shares is equal to or less than the market price per common share plus estimated brokerage commissions (a “market premium”), the Plan Agent will receive newly issued shares from the Fund for each participant’s account. The number of newly issued common shares to be credited to the participant’s account will be determined by dividing the dollar amount of the dividend or distribution by the greater of (i) the net asset value per common share on the payment date, or (ii) 95% of the market price per common share on the payment date.

Automatic Dividend Reinvestment Plan

CALAMOS Strategic Total Return Fund SEMIANNUAL REPORT   45

If, on the payment date, the net asset value per common share exceeds the market price plus estimated brokerage commissions (a “market discount”), the Plan Agent has a limited period of time to invest the dividend or distribution amount in shares acquired in open-market purchases. If, before the Plan Agent has completed its open-market purchases, the market price plus estimated brokerage commissions exceeds the net asset value of the common shares as of the payment date, the purchase price paid by Plan Agent may exceed the net asset value of the common shares, resulting in the acquisition of fewer common shares than if such dividend or distribution had been paid in common shares issued by the Fund. The weighted average price (including brokerage commissions) of all common shares purchased by the Plan Agent as Plan Agent will be the price per common share allocable to each participant. If the Plan Agent is unable to invest the full dividend amount in open-market purchases during the purchase period or if the market discount shifts to a market premium during the purchase period, the Plan Agent will cease making open-market purchases and will invest the uninvested portion of the dividend or distribution amount in newly issued shares at the net asset value per common share at the close of business on the last purchase date.

The automatic reinvestment of dividends and distributions will not relieve participants of any federal, state or local income tax that may be payable (or required to be withheld) on such dividends even though no cash is received by participants.

There are no brokerage charges with respect to shares issued directly by the Fund as a result of dividends or distributions payable either in shares or in cash. However, each participant will pay a pro rata share of brokerage commissions incurred with respect to the Plan Agent’s open-market purchases in connection with the reinvestment of dividends or distributions. If a participant elects to have the Plan Agent sell part or all of his or her common shares and remit the proceeds, such participant will be charged his or her pro rata share of brokerage commissions on the shares sold, plus a $15 transaction fee. There is no direct service charge to participants in the Plan; however, the Fund reserves the right to amend the Plan to include a service charge payable by the participants.

A participant may request the sale of all of the common shares held by the Plan Agent in his or her Plan account in order to terminate participation in the Plan. If such participant elects in advance of such termination to have the Plan Agent sell part or all of his shares, the Plan Agent is authorized to deduct from the proceeds a $15.00 fee plus the brokerage commissions incurred for the transaction. A participant may re-enroll in the Plan in limited circumstances.

The terms and conditions of the Plan may be amended by the Plan Agent or the Fund at any time upon notice as required by the Plan.

This discussion of the Plan is only summary, and is qualified in its entirety by the Terms and Conditions of the Dividend Reinvestment Plan filed as part of the Fund’s registration statement.

For additional information about the Plan, please contact the Plan Agent, Computershare, at 866.226.8016. If you wish to participate in the Plan and your shares are held in your own name, simply call the Plan Agent. If your shares are not held in your name, please contact your brokerage firm, bank, or other nominee to request that they participate in the Plan on your behalf. If your brokerage firm, bank, or other nominee is unable to participate on your behalf, you may request that your shares be re-registered in your own name.

We’re pleased to provide our shareholders with the additional benefit of the Fund’s Dividend Reinvestment Plan and hope that it may serve your financial plan.

STAY CONNECTED

www.calamos.com/connect

Visit our Web site for timely fund performance,
detailed fund profiles, fund news and insightful
market commentary.

MANAGING YOUR CALAMOS
FUNDS INVESTMENTS

Calamos Investments offers several convenient means to monitor, manage and feel confident about your Calamos investment choice.

PERSONAL ASSISTANCE: 800.582.6959

Dial this toll-free number to speak with a knowledgeable Client Services Representative who can help answer questions or address issues concerning your Calamos Fund.

YOUR FINANCIAL ADVISOR

We encourage you to talk to your financial advisor to determine how the Calamos Funds can benefit your investment portfolio based on your financial goals, risk tolerance, time horizon and income needs.

A description of the Calamos Proxy Voting Policies and Procedures and the Fund’s proxy voting record for the 12-month period ended June 30 are available free of charge upon request by calling 800.582.6959, by visiting the Calamos Web site at www.calamos.com, by writing Calamos at: Calamos Investments, Attn: Client Services, 2020 Calamos Court, Naperville, IL 60563. The Fund’s proxy voting record is also available free of charge by visiting the SEC Web site at www.sec.gov.

The Fund files its complete list of portfolio holdings with the SEC for the first and third quarters each fiscal year as an exhibit to its report on Form N-PORT. The Forms N-PORT are available free of charge, upon request, by calling or writing Calamos Investments at the phone number or address provided above or by visiting the SEC Web site at www.sec.gov. You may also review or, for a fee, copy the forms at the SEC’s Public Reference Room in Washington, D.C. Information on the operation of the Public Reference Room may be obtained by calling 800.732.0330.

The Fund’s report to the SEC on Form N-CSR contains certifications by the fund’s principal executive officer and principal financial officer as required by Rule 30a-2(a) under the 1940 Act, relating to, among other things, the quality of the Fund’s disclosure controls and procedures and internal control over financial reporting.

FOR 24-HOUR AUTOMATED SHAREHOLDER ASSISTANCE: 866.226.8016

TO OBTAIN INFORMATION ABOUT YOUR INVESTMENTS: 800.582.6959

VISIT OUR WEB SITE: www.calamos.com

INVESTMENT ADVISER:

Calamos Advisors LLC
2020 Calamos Court
Naperville, IL 60563-2787

CUSTODIAN AND FUND ACCOUNTING AGENT:

State Street Bank and Trust Company
Boston, MA

TRANSFER AGENT:

Computershare
P.O. Box 505000
Louisville, KY 40233-5000

866.226.8016

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM:

Deloitte & Touche LLP
Chicago, IL

LEGAL COUNSEL:

Ropes & Gray
Chicago, IL

2020 Calamos Court

Naperville, IL 60563-2787

800.582.6959

www.calamos.com

© 2021 Calamos Investments LLC. All Rights Reserved.
Calamos
® and Calamos Investments® are registered trademarks of Calamos Investments LLC.

CSQSAN 1946 2021

 

ITEM 1(b). Registrant has included in its Rule 30e-3(c) notice only the disclosures specified by Rule 30e-3(c)(1) and (2). Therefore, Registrant has not included a copy of the notice herewith.

 

ITEM 2. CODE OF ETHICS.

 

The information required by this Item 2 is only required in an annual report on this Form N-CSR.

 

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

The information required by this Item 3 is only required in an annual report on this Form N-CSR.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

The information required by this Item 4 is only required in an annual report on this Form N-CSR.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.

The information required by this Item 5 is only required in an annual report on this Form N-CSR.

ITEM 6. SCHEDULE OF INVESTMENTS

(a) Included in the Report to Shareholders in Item 1.

 

(b) Not applicable.

ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

The information required by this Item7 is only required in an annual report on this Form N-CSR.

ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

(a) The information required by this Item 8 is only required in an annual report on this Form N-CSR.

ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

The information required by this Item 9 is only required in an annual report on this Form N-CSR.

ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

No material changes.

ITEM 11. CONTROLS AND PROCEDURES.

a) The registrant’s principal executive officer and principal financial officer have evaluated the registrant’s disclosure controls and procedures within 90 days of this filing and have concluded that the registrant’s disclosure controls and procedures were effective, as of that date, in ensuring that information required to be disclosed by the registrant in this Form N-CSR was recorded, processed, summarized, and reported within the time periods specified in the Commission’s rules and forms.

b) There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

ITEM 12. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies.

The Fund did not participate directly in securities lending activity. See Note [6] to the Financial Statements in Item 1.

ITEM 13. EXHIBITS.

(a)(1) Code of Ethics - Not applicable for semiannual reports.

(a)(2)(i) Certification of Principal Executive Officer.

(a)(2)(ii) Certification of Principal Financial Officer.

(b) Certifications pursuant to Section 906 of the Sarbanes Oxley Act of 2002.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

   
Calamos Strategic Total Return Fund
 
By:  /s/  John P. Calamos, Sr.        
Name: John P. Calamos, Sr.
Title: Principal Executive Officer
Date: June 25, 2021
 
By:  /s/  Thomas E. Herman        
Name: Thomas E. Herman
Title: Principal Financial Officer
Date: June 25, 2021

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

   
By:   /s/  John P. Calamos, Sr.         
Name: John P. Calamos, Sr.
Title: Principal Executive Officer
Date: June 25, 2021
 
By:  /s/  Thomas E. Herman         
Name: Thomas E. Herman
Title: Principal Financial Officer
Date: June 25, 2021

 

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