| Date | Time | Source | Headline | Symbol | Company |
| 02/19/2013 | 6:02AM | Edgar (US Regulatory) | Filed Under the 1933 Act Only or Under Both the 1933 and 1940 Acts: Pursuant to Rule 486(b) (486bpos) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 01/28/2013 | 4:43PM | Edgar (US Regulatory) | Mutual Fund Summary Prospectus (497k) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 01/28/2013 | 4:43PM | Edgar (US Regulatory) | Definitive Materials Filed by Investment Companies. (497) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 01/28/2013 | 4:00PM | PR Newswire (US) | Calamos Diversifies Lending Group for Closed-end Funds | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 01/24/2013 | 11:24AM | Edgar (US Regulatory) | Amended Statement of Ownership (sc 13g/a) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/26/2012 | 10:08AM | Edgar (US Regulatory) | Annual Report (management company) (NSAR-B) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/26/2012 | 10:08AM | Edgar (US Regulatory) | Annual Report (management Company) (nsar-b) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/21/2012 | 12:34PM | Edgar (US Regulatory) | Certified annual shareholder report for management investment companies (N-CSR) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/21/2012 | 12:34PM | Edgar (US Regulatory) | Certified Annual Shareholder Report for Management Investment Companies (n-csr) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/19/2012 | 4:00PM | PR Newswire (US) | Calamos Closed-End Funds (NASDAQ: CHI, CHY, CSQ, CGO and CHW) Announce Monthly Distributions for January 2013 | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 4:16PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 4:16PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 3:52PM | Edgar (US Regulatory) | Post-effective Amendment (investment Company, Rule 485(a)) (485apos) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 3:51PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 3:51PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 3:42PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 3:42PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 1:49PM | Edgar (US Regulatory) | Post-effective Amendment (investment Company, Rule 485(a)) (485apos) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 1:49PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 12/14/2012 | 1:49PM | Edgar (US Regulatory) | Annual Statement of Changes in Beneficial Ownership (5) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 11/30/2012 | 4:00PM | PR Newswire (US) | Calamos Closed-End Funds (NASDAQ: CHI, CHY, CSQ, CGO and CHW) Announce Monthly Distributions for December 2012 | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 11/01/2012 | 4:00PM | PR Newswire (US) | Calamos Closed-End Funds (NASDAQ: CHI, CHY, CSQ, CGO and CHW) Announce Monthly Distributions for November 2012 | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 10/01/2012 | 4:00PM | PR Newswire (US) | Calamos Closed-End Funds (NASDAQ: CHI, CHY, CSQ, CGO and CHW) Announce Monthly Distributions for October 2012 | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 09/20/2012 | 3:47PM | Edgar (US Regulatory) | Initial Statement of Beneficial Ownership (3) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 09/18/2012 | 3:50PM | Edgar (US Regulatory) | Quarterly Schedule of Portfolio Holdings of Registered Management Investment Company (N-Q) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 08/31/2012 | 4:00PM | PR Newswire (US) | Calamos Closed-End Funds (NASDAQ: CHI, CHY, CSQ, CGO and CHW) Announce Monthly Distributions for September 2012 | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 08/31/2012 | 2:41PM | Edgar (US Regulatory) | Definitive materials filed by investment companies. (497) | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 07/31/2012 | 4:00PM | PR Newswire (US) | Calamos Closed-End Funds (NASDAQ: CHI, CHY, CSQ, CGO and CHW) Announce Monthly Distributions for August 2012 | NASDAQ:CHI | Calamos Convertible Opportunities and Income Fund |
| 07/30/2012 | 12:20PM | Dow Jones News | Allegiant Air Plans to Buy Up to 19 Airbus A319s | NASDAQ:CHI | Cebu Holdings Inc. |
| 02/23/2010 | 4:00PM | PR Newswire (US) | Calamos Releases Monthly Closed-End Fund Portfolio Data | NASDAQ:CHI | N^CURN |