CLIENT LOGO
PIA Short-Term Securities Fund
Advisor Class (PIASX)
 
Summary Prospectus
March 30, 2013

Before you invest, you may want to review the PIA Short-Term Securities Fund’s (the “Short-Term Fund” or the “Fund”) statutory prospectus and statement of additional information, which contain more information about the Fund and its risks.  The current statutory prospectus and statement of additional information dated March 30, 2013, are incorporated by reference into this Summary Prospectus. You can find the Fund’s statutory prospectus, statement of additional information and other information about the Fund online at www.piamutualfunds.com.  You can also get this information at no cost by calling 1-800-251-1970 or by sending an email request to piamutualfunds@pacificincome.com .

Investment Objective
The Short-Term Fund’s investment objective is to seek a high level of current income, consistent with low volatility of principal through investing in short-term investment grade debt securities.

Fees and Expenses of the Fund
This table describes the fees and expenses that you may pay if you buy and hold shares of the Short-Term Fund.

SHAREHOLDER FEES (fees paid directly from your investment)
None
   
ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)
Management Fees
0.20%
Distribution and Service (Rule 12b-1) Fees
0.00%
Other Expenses
0.18%
Total Annual Fund Operating Expenses
0.38%
Less: Fee Waiver
-0.03%
Net Annual Fund Operating Expenses (1)
0.35%
(1)
Pacific Income Advisers, Inc. (t he “Adviser”) has contractually agreed to waive all or a portion of its management fees and pay expenses of the Short-Term Fund to the extent necessary to limit Net Annual Fund Operating Expenses for the Fund (excluding acquired fund fees and expenses, interest, taxes and extraordinary expenses) to 0.35% of the Fund’s average daily net assets (the “Expense Cap”).  The Expense Cap will remain in effect through at least March 29, 2014, and may be terminated only by the Trust’s Board of Trustees.  The Adviser may request recoupment of previously waived fees and paid expenses from the Fund for three years from the date they were waived or paid, subject to the Expense Cap.

Example
This Example is intended to help you compare the cost of investing in the Short-Term Fund with the cost of investing in other mutual funds.  The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods.  The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same   (taking into account the Expense Cap only in the first year).  Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
 
 
 
1

 

 
1 Year
3 Years
5 Years
10 Years
$ 36
$ 119
$ 210
$ 477

Portfolio Turnover
The Short-Term Fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio).  A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account.  These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance.  During the most recent fiscal year, the Fund’s portfolio turnover rate was 53% of the average value of its portfolio.

Principal Investment Strategies of the Fund
The Short-Term Fund is a diversified investment company that normally invests at least 80% of its net assets in short-term securities having a duration of less than three years.  Under normal market conditions, the Fund purchases securities rated BBB or better by a nationally recognized rating agency.

The Short-Term Fund primarily invests in securities issued or guaranteed by the U.S. Government and its agencies, investment grade mortgage-backed securities and investment grade debt securities.

The Short-Term Fund may invest up to 20% of its net assets in debt futures contracts, option contracts, options on securities and options on debt futures.

Duration is a measure of a debt security’s price sensitivity.   Higher duration indicates bonds that are more sensitive to interest rate changes. Bonds with shorter duration have lower risk associated with interest rates. Duration takes into account a debt security’s cash flows over time including the possibility that a debt security might be prepaid by the issuer or redeemed by the holder prior to its stated maturity date.  In contrast, maturity measures only the time until final payment is due.  The weighted average duration of the Short-Term Fund portfolio will generally range as follows:

Short End
Long End
6 months
3 years

In selecting investments for the Short-Term Fund, the Adviser primarily will consider credit quality, duration and yield.  The Short-Term Fund’s annual portfolio turnover rate may exceed 100%.

The Adviser may sell a security as part of its overall investment decision to reposition assets into a more attractive security or to implement a change in maturity and quality to the overall portfolio.

Principal Risks of Investing in the Fund
Losing all or a portion of your investment is a risk of investing in the Short-Term Fund.  The success of the Fund cannot be guaranteed.  There are risks associated with investments in the types of securities in which the Fund invests.  These risks include:

·  
Market Risk.   The prices of the securities in which the Short-Term Fund invests may decline for a number of reasons including in response to economic developments and perceptions about the creditworthiness of individual issuers.
 
 
 
 
2

 
 
·  
Management Risk. The Short-Term Fund is subject to management risk because it is an actively managed portfolio.  The Adviser’s management practices and investment strategies might not work to produce the desired results.
 
·  
Interest Rate Risk.   In general, the value of bonds and other debt securities falls when interest rates rise.  Longer term obligations are usually more sensitive to interest rate changes than shorter term obligations.
 
·  
Credit Risk.   The issuers of the bonds and other debt securities held by the Short-Term Fund may not be able to make interest or principal payments.
 
·  
Prepayment Risk.   Issuers of securities held by the Short-Term Fund may be able to prepay principal due on these securities, particularly during periods of declining interest rates.  Securities subject to prepayment risk generally offer less potential for gains when interest rates decline, and may offer a greater potential for loss when interest rates rise. Prepayment risk is a major risk of mortgage-backed securities.
 
·  
Portfolio Turnover Risk. A high portfolio turnover rate (100% or more) has the potential to result in the realization and distribution to shareholders of higher capital gains, which may subject you to a higher tax liability.  A high portfolio turnover rate also leads to higher transactions costs.
 
·  
Risks Associated with Mortgage-Backed Securities.   These include Market Risk, Interest Rate Risk, Credit Risk and Prepayment Risk as well as the risk that the structure of certain mortgage-backed securities may make their reaction to interest rates and other factors difficult to predict, making their prices very volatile.  In particular, events related to the U.S. housing market in recent years have had a severe negative impact on the value of some mortgage-backed securities and resulted in an increased risk associated with investments in the securities.
 
·  
Liquidity Risk.   Low or lack of trading volume may make it difficult to sell securities held by the Short-Term Fund at quoted market prices.
 
·  
Derivatives Risk. The Short-Term Fund may invest in derivative securities for both bona fide hedging purposes and for speculative purposes.  A derivative security is a financial contract whose value is based on (or “derived from”) a traditional security (such as a bond) or a market index.  Derivatives involve the risk of improper valuation, the risk of ambiguous documentation and the risk that changes in the value of the derivative may not correlate perfectly with the underlying security.
 
·  
Leverage Risk.   Leverage risk is the risk that losses from a derivative instrument may be greater than the amount invested in the derivative instrument. Certain derivatives have the potential for unlimited losses, regardless of the size of the initial investment.
 
·  
Adjustable Rate and Floating Rate Securities Risks. Although adjustable and floating rate debt securities tend to be less volatile than fixed-rate debt securities, they nevertheless fluctuate in value.
 
·  
Risks Associated with Inflation and Deflation .  Inflation risk is the risk that the rising cost of living may erode the purchasing power of an investment over time.  Deflation risk is the risk that prices throughout the economy decline over time – the opposite of inflation.

Performance
The following performance information provides some indication of the risks of investing in the Short-Term Fund by showing changes in the Fund’s performance from year to year and by showing how the Fund’s average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance.  The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.  Updated performance information is available on the Fund’s website at www.piamutualfunds.com or by calling the Fund toll-free at 1-800-251-1970.
 
 
 
 
3

 
 
Calendar Year Total Returns as of December 31
 
SUMMARY PROSPECTUS PERFORMANCE CHART
During the period shown on the bar chart, the Short-Term Fund’s highest total return for a quarter was 1.89% (quarter ended March 31, 2008) and the lowest total return for a quarter was -0.28% (quarter ended June 30, 2004).

Average Annual Total Returns
(for the periods ended December 31, 2012)
PIA Short-Term Securities Fund
1 Year
5 Years
10 Years
Return before taxes
0.40 %
1.55 %
2.27 %
Return after taxes on distributions
0.26%
1.07%
1.41%
Return after taxes on distributions and sale of Fund shares
0.26%
1.04%
1.43%
BofA Merrill Lynch 1-Year U.S. Treasury Note Index
(reflects no deduction for fees, expenses or taxes)
0.24 %
1.42 %
2.19 %
Barclays Capital U.S. Government/Corporate 1-Year Duration Index
(reflects no deduction for fees, expenses or taxes)
0.58%
1.60%
2.38%
 
The after-tax returns were calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.  Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and after-tax returns are not relevant to investors who hold shares of the Short-Term Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (“IRAs”).   The Return After Taxes on Distributions and Sale of Fund Shares is higher than other return figures when a capital loss occurs upon the redemption of Fund shares.

Management
Investment Adviser:   Pacific Income Advisers, Inc. is the investment adviser of the Short-Term Fund.
 
 
 
4

 
 
Portfolio Managers:   The following individuals serve as the Short-Term Fund’s portfolio managers:

Portfolio Managers
Years of Service
with the Fund
Primary Title with the Adviser
Bistra Pashamova, CFA
14
Vice President, Portfolio Manager
Lloyd McAdams, CFA, CEBS
5
Chairman and Chief Investment Officer
Evangelos Karagiannis, Ph.D., CFA
5
Senior Vice President

Purchase and Sale of Fund Shares
You may purchase, exchange or redeem Fund shares on any business day by written request via mail (PIA Short-Term Securities Fund, c/o U.S. Bancorp Fund Services, LLC, P.O. Box 701, Milwaukee, Wisconsin 53201-0701), by telephone at 1-800- 251-1970 , or through a financial intermediary.  You may also purchase or redeem Fund shares by wire transfer.  Investors who wish to purchase, exchange or redeem Fund shares through a financial intermediary should contact the financial intermediary directly.  The minimum initial and subsequent investment amounts are shown below.
 
Type of Account
To Open
Your Account
To Add to
Your Account
Regular
$1,000
$50
Retirement Accounts
$100
$50
Automatic Investment Plan
$50
$50

Tax Information
Short-Term Fund distributions are taxable, and will be taxed as ordinary income or capital gains, unless you invest through a tax-deferred arrangement such as an IRA or 401(k) plan.  Distributions on investments made through tax-deferred arrangements may be taxed later upon withdrawal of assets from those accounts.

Payments to Broker-Dealers and Other Financial Intermediaries
If you purchase the Short-Term Fund through a broker-dealer or other financial intermediary (such as a bank or financial adviser), the Fund and/or the Adviser may pay the intermediary for the sale of Fund shares and related services.  These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment.  Ask your salesperson or visit your financial intermediary’s website for more information.
 
 
5