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:  811-21080

EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER: Calamos Convertible
                                                  Opportunities and Income
                                                  Fund

ADDRESS OF PRINCIPAL EXECUTIVE OFFICES:  1111 East Warrenville Road, Naperville,
                                         Illinois 60563

NAME AND ADDRESS OF AGENT FOR SERVICE:   James S. Hamman, Jr., Secretary,
                                         Calamos Asset Management,
                                         Inc., 1111 East Warrenville Road,
                                         Naperville, Illinois
                                         60563-1493

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

DATE OF FISCAL YEAR END:  October 31, 2003

DATE OF REPORTING PERIOD:  November 1, 2002 through October 31, 2003


ITEM 1. REPORTS TO STOCKHOLDERS

                              CALAMOS CONVERTIBLE
                         OPPORTUNITIES AND INCOME FUND

                         ANNUAL REPORT OCTOBER 31, 2003

                           [CALAMOS INVESTMENTS LOGO]
                        Strategies for Serious Money(TM)


                               PRESIDENT'S LETTER


--------------------------------------------------------------------------------
[PRESIDENT PHOTO]
--------------------------------------------------------------------------------

Dear Shareholder:
       Arriving at the Fund's fiscal year-end, we are pleased to report that the
CALAMOS Convertible Opportunities and Income Fund provided a significant return
to its shareholders. Due primarily to security selection and the significant
narrowing of spreads during the period, the Fund's NAV delivered a total return
of 46.48% for the twelve months ending October 31, 2003. We appreciate the
confidence you have entrusted with us in the closed-end fund arena and as with
all of our products and services, we remain focused on delivering long-term
performance and exceptional client service.
       Looking towards its second year of operations, we believe the Fund
remains well positioned to meet its investment objective. Our quantitative
research and qualitative analysis of companies, industries, and the economic
environment enable us to identify both risks and opportunities for the Fund,
constructing an appropriate mix of securities that aims to provide shareholders
with significant total return through a combination of capital appreciation and
current income.
       ONE WAY TO USE THE FUND'S DIVIDEND TO YOUR ADVANTAGE IS THROUGH THE
FUND'S DIVIDEND REINVESTMENT PLAN. I encourage you to consider participating in
this program as a means to increase your number of shares in the Fund at
significant cost savings. For example, when the Fund's market price is at a
premium to its net asset value (NAV), dividends automatically reinvested through
the plan purchase shares either at NAV or at 95% of the market price, whichever
is greater. With more shares, investors increase their power of compounding, and
the plan's cost savings and convenience make that prospect even more attractive.
       Thank you for entrusting your investment with the CALAMOS Convertible
Opportunities and Income Fund. We pledge our continued commitment to serving you
with Strategies for Serious Money.

Sincerely,

/S/ JOHN P. CALAMOS
John P. Calamos, Sr.
Chairman, Chief Executive Officer, and
Chief Investment Officer

The views expressed in this report reflect those of CALAMOS ASSET MANAGEMENT,
Inc. only through October 31, 2003. The manager's views are subject to change at
any time based on market and other conditions.


                        Strategies for Serious Money (R)                       1


                   CONVERTIBLE OPPORTUNITIES AND INCOME FUND

SCHEDULE OF INVESTMENTS OCTOBER 31, 2003



 PRINCIPAL
   AMOUNT                                              VALUE
-----------------------------------------------------------------
                                             
CORPORATE BONDS (71.4%)
                   BASIC INDUSTRIES (5.8%)
$  9,000,000       Boise Cascade Corp.
                   7.000%, 11/01/13                $    9,234,702
   4,500,000       Buckeye Technologies Inc.(a)
                   8.500%, 10/01/13                     4,725,000
   5,000,000       Equistar Chemicals LP(a)
                   10.625%, 05/01/11                    5,250,000
     600,000       Freeport-McMoRan Copper &
                   Gold, Inc.
                   10.125%, 02/01/10                      687,000
   1,750,000       FMC Corp.
                   10.250%, 11/01/09                    2,056,250
  13,000,000       Georgia-Pacific Corp.
                   8.125%, 05/15/11                    14,202,500
   1,190,000       Jarden Corp.
                   9.750%, 05/01/12                     1,306,025
   4,500,000       Pope & Talbot, Inc.
                   8.375%, 06/01/13                     4,410,000
                   Union Carbide Corp.
   1,750,000       7.875%, 04/01/23                     1,557,500
   1,000,000       7.500%, 06/01/25                       870,000
   2,000,000       6.700%, 04/01/09                     1,930,000
                                                   --------------
                                                       46,228,977
                                                   --------------
                   CAPITAL GOODS - INDUSTRIAL (2.7%)
   9,150,000       AGCO Corp.
                   8.500%, 03/15/06                     9,195,750
   2,400,000       IMCO Recycling Inc.(a)
                   10.375%, 10/15/10                    2,388,000
   4,500,000       JLG Industries, Inc.
                   8.250%, 05/01/08                     4,792,500
   4,400,000       Laidlaw International Inc.(a)
                   10.750%, 06/15/11                    4,774,000
                                                   --------------
                                                       21,150,250
                                                   --------------
                   CAPITAL GOODS - TECHNOLOGY (7.8%)
  13,000,000       Avnet, Inc.
                   9.750%, 02/15/08                    14,495,000
  12,500,000 EUR   FIMEP, SA
                   11.000%, 02/15/13                   17,252,892
   3,400,000       Monitronics International
                   Inc.(a)
                   11.750%, 09/01/10                    3,493,500
   3,000,000       Rayovac Corp.(a)
                   8.500%, 10/01/13                     3,135,000
  10,450,000       Sanmina-SCI Corp.
                   10.375%, 01/15/10                   12,383,250
   4,900,000       Stoneridge, Inc.
                   11.500%, 05/01/12                    5,708,500
   5,000,000       Xerox Corp.
                   7.625%, 06/15/13                     5,125,000
                                                   --------------
                                                       61,593,142
                                                   --------------




 PRINCIPAL
   AMOUNT                                              VALUE
-----------------------------------------------------------------
                                             
                   CONSUMER CYCLICAL (23.9%)
$  8,700,000       American Axle & Manufacturing,
                   Inc.
                   9.750%, 03/01/09                $    9,330,750
   9,200,000       Aztar Corp.
                   8.875%, 05/15/07                     9,660,000
  13,440,000       Delta Air Lines, Inc.(a)
                   10.000%, 08/15/08                   11,659,200
   5,970,000 GBP   EMI Group PLC
                   9.750%, 5/20/08                     10,493,183
  17,250,000       Intrawest Corp.
                   10.500%, 02/01/10                   19,039,688
                   Isle of Capri Casinos, Inc.
  14,000,000       9.000%, 03/15/12                    15,435,000
   2,000,000       8.750%, 04/15/09                     2,127,500
   9,100,000       La Quinta Properties(a)
                   8.875%, 03/15/11                    10,089,625
  17,500,000       Mandalay Resort Group
                   10.250%, 08/01/07                   20,256,250
   3,200,000       Moore North America, Inc.(a)
                   7.875%, 01/15/11                     3,472,000
   4,500,000       Oxford Industries, Inc.(a)
                   8.875%, 06/01/11                     4,865,625
   2,850,000       RH Donnelley Financial
                   Corp.(a)
                   10.875%, 12/15/12                    3,412,875
  13,100,000       Royal Caribbean Cruises, Ltd.
                   8.750%, 02/02/11                    14,672,000
  15,500,000       Russell Corp.
                   9.250%, 05/01/10                    16,352,500
  19,700,000       Saks, Inc.
                   8.250%, 11/15/08                    22,359,500
   6,000,000       Station Casinos, Inc.
                   8.875%, 12/01/08                     6,232,500
   2,900,000       The Gap, Inc.
                   10.550%, 12/15/08                    3,545,250
   5,200,000       Toys "R" Us, Inc.
                   7.625%, 08/01/11                     5,739,854
                                                   --------------
                                                      188,743,300
                                                   --------------
                   CONSUMER GROWTH STAPLES (8.2%)
   8,000,000       AOL Time Warner
                   7.625%, 04/15/31                     8,972,168
   2,250,000       Alpharma, Inc.(a)
                   8.625%, 05/01/11                     2,255,625
  10,000,000       American Greetings Corp.
                   11.750%, 07/15/08                   11,462,500
   4,100,000       AmeriPath, Inc.
                   10.500%, 04/01/13                    4,346,000
   9,000,000       Avis Group Holdings, Inc.
                   11.000%, 05/01/09                    9,956,250
   8,450,000       Bausch & Lomb, Inc.
                   7.125%, 08/01/28                     8,344,375
   1,000,000       CanWest Media, Inc.
                   7.625%, 04/15/13                     1,097,500


 2             See accompanying Notes to Schedule of Investments.


                   CONVERTIBLE OPPORTUNITIES AND INCOME FUND

SCHEDULE OF INVESTMENTS OCTOBER 31, 2003



 PRINCIPAL
   AMOUNT                                              VALUE
-----------------------------------------------------------------
                                             
$  4,000,000       Charter Communications
                   Holdings
                   9.625%, 11/15/09                $    3,240,000
   4,500,000       Quintiles Transnational
                   Corp.(a)
                   10.000%, 10/01/13                    4,770,000
  10,000,000       Spanish Broadcasting Systems,
                   Inc.
                   9.625%, 11/01/09                    10,425,000
                                                   --------------
                                                       64,869,418
                                                   --------------
                   CONSUMER STAPLES (3.9%)
   4,200,000       Del Monte Foods Company(a)
                   8.625%, 12/15/12                     4,662,000
   6,000,000       DIMON Inc.(a)
                   7.750%, 06/01/13                     6,210,000
   9,000,000       Dole Food Company, Inc.
                   7.250%, 06/15/10                     9,225,000
  10,000,000       Smithfield Foods, Inc.(a)
                   7.750%, 05/15/13                    10,850,000
                                                   --------------
                                                       30,947,000
                                                   --------------
                   CREDIT CYCLICALS (4.8%)
   9,000,000       Beazer Homes USA, Inc.
                   8.375%, 04/15/12                     9,900,000
   2,975,000       K. Hovnanian Enterprises
                   Inc.(a)
                   7.750% 05/15/13                      3,138,625
   9,300,000       Standard Pacific Corp.
                   9.500%, 09/15/10                    10,369,500
   8,450,000       Texas Industries, Inc.(a)
                   10.250%, 06/15/11                    9,464,000
   4,500,000       WCI Communities, Inc.(a)
                   7.875%, 10/01/13                     4,680,000
                                                   --------------
                                                       37,552,125
                                                   --------------
                   ENERGY (4.9%)
   5,500,000       Newfield Exploration Company
                   8.375%, 08/15/12                     6,105,000
   3,000,000       Offshore Logistic, Inc.
                   6.125%, 06/15/13                     2,895,000
   4,000,000       Paramount Resources Ltd.
                   7.875%, 11/01/10                     4,000,000
   5,000,000       Plains All American Pipeline,
                   LP
                   7.750%, 10/15/12                     5,550,000
                   Premcor, Inc.
   6,400,000       9.500%, 02/01/13                     7,296,000
   2,725,000       7.500%, 06/15/15                     2,799,937
   1,000,000       Tesoro Petroleum Corp.
                   8.000%, 04/15/08                     1,065,000
   8,500,000       Western Gas Resources, Inc.
                   10.000%, 06/15/09                    9,116,250
                                                   --------------
                                                       38,827,187
                                                   --------------
                   FINANCIAL (3.9%)
   9,300,000       Host Marriott Corp.
                   9.500%, 01/15/07                    10,346,250
   9,000,000       LNR Property Corp.(a)
                   7.250%, 10/15/13                     9,135,000




 PRINCIPAL
   AMOUNT                                              VALUE
-----------------------------------------------------------------
                                             
$  7,500,000       Leucadia National Corp.(a)
                   7.000%, 08/15/13                $    7,406,250
   3,900,000       Senior Housing Property Trust
                   7.875%, 04/15/15                     4,124,250
                                                   --------------
                                                       31,011,750
                                                   --------------
                   TELECOMMUNICATIONS (2.1%)
   9,000,000       Avaya, Inc.
                   11.125%, 04/01/09                   10,665,000
   5,500,000       DIRECTV, Inc.
                   8.375%, 03/15/13                     6,215,000
                                                   --------------
                                                       16,880,000
                                                   --------------
                   TRANSPORTATION (1.7%)
   3,000,000       GATX Financial Corp.
                   8.875%, 06/01/09                     3,321,480
   8,700,000       General Maritime Corp.
                   10.000%, 03/15/13                    9,765,750
                                                   --------------
                                                       13,087,230
                                                   --------------
                   UTILITIES (1.7%)
                   Calpine Corp.
  10,000,000       8.500%, 02/15/11                     7,200,000
   9,000,000       7.750%, 04/15/09                     6,300,000
                                                   --------------
                                                       13,500,000
                                                   --------------
                   TOTAL CORPORATE BONDS
                   (Cost $517,752,245)                564,390,379
                                                   ==============

CONVERTIBLE BONDS (33.9%)
                   CAPITAL GOODS - INDUSTRIAL (2.4%)
   6,475,000       Spherion Corp.
                   4.500%, 06/01/05                     6,288,844
  13,500,000       Standard Motor Products, Inc.
                   6.750%, 07/15/09                    12,487,500
                                                   --------------
                                                       18,776,344
                                                   --------------
                   CAPITAL GOODS - TECHNOLOGY (12.1%)
   5,944,000       Advanced Energy Industries,
                   Inc.
                   5.000%, 09/01/06                     6,270,920
  12,850,000 EUR   Amazon.com, Inc.
                   6.875%, 02/16/10                    14,916,887
   6,500,000       ASML Holding, NV
                   5.750%, 10/15/06                     8,084,375
  11,000,000       Brocade Communications
                   Systems, Inc.
                   2.000%, 01/01/07                     9,831,250
  12,979,000       Brooks-PRI Automation, Inc.
                   4.750%, 06/01/08                    12,378,721
   8,500,000       Cypress Semiconductor Corp.
                   3.750%, 07/01/05                     8,330,000
  23,200,000       Juniper Networks, Inc.
                   4.750%, 03/15/07                    23,838,000


               See accompanying Notes to Schedule of Investments.              3


                   CONVERTIBLE OPPORTUNITIES AND INCOME FUND

SCHEDULE OF INVESTMENTS OCTOBER 31, 2003



 PRINCIPAL
   AMOUNT                                              VALUE
-----------------------------------------------------------------
                                             
$  4,400,000       Mentor Graphics Corp.
                   6.875%, 06/15/07                $    4,889,500
   7,562,000       Richardson Electronics, Ltd.
                   8.250%, 06/15/06                     7,647,072
                                                   --------------
                                                       96,186,725
                                                   --------------
                   CONSUMER CYCLICAL (4.3%)
  30,000,000       Royal Caribbean Cruises,
                   Ltd.(b)
                   0.000%, 02/02/21                    13,800,000
                   The Interpublic Group of
                   Companies, Inc.
   3,500,000       1.870%, 06/01/06                     3,228,750
  17,375,000       1.800%, 09/16/04                    16,875,469
                                                   --------------
                                                       33,904,219
                                                   --------------
                   CONSUMER GROWTH STAPLES (6.8%)
   3,900,000       ICN Pharmaceuticals, Inc.
                   6.500%, 07/15/08                     3,924,375
   5,000,000       IVAX Corp.
                   5.500%, 05/15/07                     5,087,500
   7,500,000       Quanta Services, Inc.
                   4.000%, 07/01/07                     6,843,750
  12,600,000       Service Corp.
                   6.750%, 06/22/08                    13,293,000
  17,050,000       Skechers USA., Inc.
                   4.500%, 04/15/07                    14,790,875
   9,000,000       Sunrise Assisted Living, Inc.
                   5.250%, 02/01/09                     9,517,500
                                                   --------------
                                                       53,457,000
                                                   --------------
                   CONSUMER STAPLES (0.6%)
   3,500,000 EUR   Royal Numico, NV
                   1.500%, 09/22/04                     4,540,961
                                                   --------------
                   FINANCIAL (2.1%)
  14,375,000       NCO Group, Inc.
                   4.750%, 04/15/06                    14,914,062
   4,360,000       Providian Financial Corp.(b)
                   0.000%, 02/15/21                     2,098,250
                                                   --------------
                                                       17,012,312
                                                   --------------
                   TELECOMMUNICATIONS (5.6%)
  12,000,000       Corning, Inc.
                   4.875%, 03/01/08                    11,880,000
  15,000,000       Liberty Media Corp.
                   (Sprint PCS Group)
                   3.750%, 02/15/30                     9,393,750
  20,000,000       Nextel Communications, Inc.
                   6.000%, 06/01/11                    23,100,000
                                                   --------------
                                                       44,373,750
                                                   --------------
                   TOTAL CONVERTIBLE BONDS
                   (Cost $210,594,932)                268,251,311
                                                   ==============


 NUMBER OF
   SHARES                                              VALUE
-----------------------------------------------------------------
                                             
CONVERTIBLE PREFERRED STOCK (15.5%)
                   CAPITAL GOODS - INDUSTRIAL (3.4%)
     168,000       Cummins Capital Trust I
                   7.000%                          $   10,311,000
     356,000       Ford Motor Company Capital
                   Trust II
                   6.500%                              16,536,200
                                                   --------------
                                                       26,847,200
                                                   --------------
                   CAPITAL GOODS - TECHNOLOGY (1.5%)
     230,000       Raytheon Company
                   8.250%                              11,615,000
                                                   --------------
                   CONSUMER GROWTH STAPLES (2.6%)
     262,000       Cendant Corp.
                   7.750%                              12,680,800
     174,530       Sinclair Broadcast Group, Inc.
                   6.000%                               7,871,600
                                                   --------------
                                                       20,552,400
                                                   --------------
                   FINANCIAL (3.0%)
     650,000       National Australia Bank, Ltd.
                   7.875%                              24,128,000
                                                   --------------
                   TELECOMMUNICATIONS (1.8%)
      12,900       Lucent Technologies, Inc.
                   8.000%                              14,125,500
                                                   --------------
                   TRANSPORTATION (0.7%)
     106,845       Union Pacific Capital Trust
                   6.250%                               5,475,806
                                                   --------------
                   UTILITIES (2.5%)
     410,000       AES Trust III
                   6.750%                              15,272,500
     140,000       TXU Corp.
                   8.125%                               4,795,000
                                                   --------------
                                                       20,067,500
                                                   --------------
                   TOTAL CONVERTIBLE PREFERRED
                   STOCK
                   (Cost $96,321,497)                 122,811,406
                                                   ==============


 4             See accompanying Notes to Schedule of Investments.


                   CONVERTIBLE OPPORTUNITIES AND INCOME FUND

SCHEDULE OF INVESTMENTS OCTOBER 31, 2003



 PRINCIPAL
   AMOUNT                                              VALUE
-----------------------------------------------------------------
                                             
SHORT TERM INVESTMENTS (33.3%)
$247,000,350       Bank of New York Institutional
                   Cash Reserve Fund(c)
                   current rate 1.140%             $  247,000,350
  16,573,000       Federal Home Loan Mortgage
                   Corporation Discount Note
                   0.830% 11/03/03                     16,572,236
                                                   --------------
                   TOTAL SHORT TERM INVESTMENTS
                   (Cost $263,572,586)                263,572,586
                                                   ==============

TOTAL INVESTMENTS (154.1%)
(Cost $1,088,241,260)                               1,219,025,682
                                                   ==============
LIABILITIES, LESS OTHER ASSETS (-28.3%)              (224,262,171)

PREFERRED SHARES AT REDEMPTION VALUE, INCLUDING
DIVIDENDS PAYABLE (-25.8%)                           (204,000,000)
                                                   --------------
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
(100.0%)                                           $  790,763,511
                                                   ==============


NOTES TO SCHEDULE OF INVESTMENTS

All security values are shown in U.S. Dollars

(a) 144A securities are those that are exempt from registration under Rule 144A
    of the Securities Act of 1933, as amended. These securities are generally
    issued to qualified institutional buyers ("QIBs"), such as the Fund. Any
    resale of these securities must be effected through a sale that is exempt
    from registration (i.e. a sale to another QIB), or the security must be
    registered for public sale. At October 31, 2003 the market value of 144A
    securities that can not currently be exchanged to the registered form is
    $119,836,325 or 15.2% of net assets applicable to common shareholders of the
    Fund.
(b) Non-income producing.
(c) Security is purchased with the cash collateral from securities loaned.

FOREIGN CURRENCY ABBREVIATIONS
EUR: European Monetary Unit
GBP: Great Britain Pound

                See accompanying Notes to Financial Statements.                5


                      STATEMENT OF ASSETS AND LIABILITIES

OCTOBER 31, 2003



------------------------------------------------------------------------------
                                                             
ASSETS
Investments, at value* (cost $1,088,241,260)                    $1,219,025,682
Cash with custodian (interest bearing)                               1,186,036
Accrued interest and dividends receivable                           17,179,968
Unrealized appreciation on interest rate swaps                       5,123,585
Prepaid expenses                                                        47,293
Other assets                                                            14,779
                                                                --------------
   Total Assets                                                  1,242,577,343
                                                                --------------
LIABILITIES
Payable upon return of securities loaned                           247,000,350
Payable to investment adviser                                          460,049
Payable for deferred compensation to Trustees                           14,779
Other accounts payable and accrued liabilities                         338,654
                                                                --------------
   Total Liabilities                                               247,813,832
                                                                --------------
PREFERRED SHARES
$25,000 liquidation value per share applicable to 8,160
  shares, including dividends payable                              204,000,000
                                                                --------------
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS                    $  790,763,511
                                                                ==============
COMPOSITION OF NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS
Common stock, no par value, unlimited shares authorized,
  43,904,538 shares issued and outstanding                      $  627,187,543
Undistributed net investment income (loss)                           7,467,521
Accumulated net realized gain (loss) on investments, foreign
  currency transactions and interest rate swaps                     20,155,072
Net unrealized appreciation (depreciation) of investments,
  foreign currency transactions and interest rate swaps            135,953,375
                                                                --------------
NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS                    $  790,763,511
                                                                ==============
Net asset value per common share based on 43,904,538 shares
  issued and outstanding                                        $        18.01
                                                                ==============


* Includes $237,259,803 of securities loaned.

 6              See accompanying Notes to Financial Statements.


                            STATEMENT OF OPERATIONS

FOR THE YEAR ENDED OCTOBER 31, 2003



----------------------------------------------------------------------------
                                                             
INVESTMENT INCOME
Interest                                                        $ 71,159,890
Dividends                                                         11,225,379
Securities lending income                                            185,400
                                                                ------------
   Total investment income                                        82,570,669
                                                                ------------
EXPENSES
Investment advisory fees                                           7,309,047
Auction agent fees                                                   472,709
Audit and legal fees                                                 181,086
Printing and mailing fees                                            167,060
Custodian fees                                                       115,946
Registration fees                                                     46,875
Transfer agent fees                                                   31,122
Trustees' fees                                                        22,487
Other                                                                 46,927
                                                                ------------
   Total expenses                                                  8,393,259
                                                                ------------
   Less expenses waived                                           (2,284,077)
   Net expenses                                                    6,109,182
                                                                ------------
NET INVESTMENT INCOME (LOSS)                                      76,461,487
                                                                ------------
REALIZED AND UNREALIZED GAIN (LOSS)
Net realized gain (loss) on
  Investments                                                     21,946,680
  Foreign currency transactions                                    1,507,152
Change in net unrealized appreciation/depreciation of
  Investments                                                    162,102,978
  Foreign currency transactions                                       49,680
  Interest rate swaps                                              5,123,585
                                                                ------------
NET GAIN (LOSS) ON INVESTMENTS                                   190,730,075
                                                                ------------
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM
  OPERATIONS                                                     267,191,562
                                                                ------------
DIVIDENDS TO PREFERRED SHAREHOLDERS FROM
Net investment income                                             (2,763,180)
                                                                ------------
NET INCREASE (DECREASE) IN NET ASSETS APPLICABLE TO COMMON
  SHAREHOLDERS RESULTING FROM OPERATIONS                        $264,428,382
                                                                ============


                See accompanying Notes to Financial Statements.                7


                              STATEMENT OF CHANGES
                                 IN NET ASSETS



                                                                    FOR THE              FOR THE
                                                                   YEAR ENDED         PERIOD ENDED
                                                                OCTOBER 31, 2003    OCTOBER 31, 2002*
-----------------------------------------------------------------------------------------------------
                                                                              
OPERATIONS
Net investment income (loss)                                      $ 76,461,487        $ 16,782,168
Net realized gain (loss) on investments, foreign currency
  transactions and interest rate swaps                              23,453,832          (1,921,055)
Change in net unrealized appreciation/depreciation on
  investments, foreign currency transactions and interest
  rate swaps                                                       167,276,243         (31,322,868)
Dividends to preferred shareholders from
  Net investment income                                             (2,763,180)           (460,142)
                                                                -------------------------------------
Net increase (decrease) in net assets applicable to common
  shareholders resulting from operations                           264,428,382         (16,921,897)
                                                                -------------------------------------
DIVIDENDS TO COMMON SHAREHOLDERS FROM
Net investment income                                              (71,360,002)        (12,570,515)
CAPITAL STOCK TRANSACTIONS
Proceeds from initial offering                                              --         619,298,400
Offering costs on common shares                                             --          (1,112,742)
Offering costs on preferred shares                                     (92,968)         (2,290,000)
Reinvestment of dividends resulting in the issuance of
  common stock                                                      10,895,006             489,847
                                                                -------------------------------------
Net increase (decrease) in net assets from capital stock
  transactions                                                      10,802,038         616,385,505
                                                                -------------------------------------
TOTAL INCREASE (DECREASE) IN NET ASSETS                            203,870,418         586,893,093
                                                                -------------------------------------
NET ASSETS
Beginning of period                                               $586,893,093        $         --
                                                                -------------------------------------
End of period                                                     $790,763,511        $586,893,093
                                                                =====================================
Undistributed net investment income (loss)                        $  7,467,521        $  3,810,587


* The Fund commenced operations on June 28, 2002.

 8              See accompanying Notes to Financial Statements.


                         NOTES TO FINANCIAL STATEMENTS

NOTE 1 - ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

ORGANIZATION.  CALAMOS Convertible Opportunities and Income Fund (the "Fund"),
was organized as a Delaware statutory trust on April 17, 2002 and is registered
under the Investment Company Act of 1940 as a diversified, closed-end management
investment company. The Fund commenced operations on June 28, 2002.

The Fund's investment objective is to provide total return, through a
combination of capital appreciation and current income. The Fund currently seeks
to achieve its investment objective by investing substantially all of its assets
in convertible securities and non-convertible income securities.

PORTFOLIO VALUATION.  In computing the net asset value of the Fund, portfolio
securities, including options, that are traded on a national securities exchange
are valued at the last reported sale price. Securities quoted on the NASDAQ
National Market System are valued at the Nasdaq Official Closing Price ("NOCP"),
as determined by Nasdaq, or lacking an NOCP, the last current reported sale
price as of the time of valuation. Securities traded in the over-the counter
market and listed securities for which no sales were reported are valued at the
mean of the most recently quoted bid and asked prices. Short-term securities
with maturities of 60 days or less are valued at amortized cost which
approximates market value.

When market quotations are not readily available or when the valuation methods
mentioned above are not reflective of the fair value of the security, the
security is valued at a fair value following procedures approved by the board of
trustees or a committee thereof. These procedures may utilize valuations
furnished by pricing services approved by the board of trustees or a committee
thereof, 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.

Securities that are principally traded in a foreign market are valued as of the
close of the appropriate exchange or other designated time. Trading in
securities on European and Far Eastern securities exchanges and over-the-counter
markets is normally completed at various times before the close of business on
each day on which the New York Stock Exchange ("NYSE") is open. Trading of these
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 net asset value is not calculated.

INVESTMENT TRANSACTIONS AND INVESTMENT INCOME.  Short term investment
transactions are recorded on a trade date basis. Long term investment
transactions are recorded on a trade date plus one basis, except for April 30th
and October 31st, which are recorded on trade date. 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.

FOREIGN CURRENCY TRANSLATION.  Values of investments denominated in foreign
currencies are converted into U.S. dollars using a spot market rate of exchange.
Purchases and sales of investments and dividend and interest income are
translated into U.S. dollars using the spot market rate of exchange prevailing
on the respective dates of such transaction.

FEDERAL INCOME TAXES.  No provision has been made for Federal income taxes since
the Fund is taxed as a "regulated investment company" under Subchapter M of the
Internal Revenue Code of 1986.

DIVIDENDS.  Dividends payable to shareholders are recorded by the Fund on the
ex-dividend date. Income and capital gain dividends are determined in accordance
with income tax regulations, which may differ from accounting principles
generally accepted in the United States. These differences are primarily due to
differing treatments for foreign currency transactions and contingent payment
debt instruments.

                                                                               9

                         NOTES TO FINANCIAL STATEMENTS

USE OF ESTIMATES.  The preparation of financial statements in conformity with
accounting principles generally accepted in the United States requires
management to make estimates and assumptions that affect the amounts reported in
the financial statements and accompanying notes. Actual results may differ from
those estimates.

NOTE 2 - INVESTMENT ADVISER AND TRANSACTIONS WITH AFFILIATES OR CERTAIN OTHER
PARTIES
Pursuant to an investment advisory agreement with CALAMOS ASSET MANAGEMENT, INC.
("CAM"), the Fund pays an annual fee, payable monthly, equal to 0.80% based on
the average weekly managed assets. "Managed Assets" means the total assets of
the Fund (including any assets attributable to any leverage that may be
outstanding) minus the sum of total liabilities (other than debt representing
financial leverage). CAM has contractually agreed to waive a portion of its
management fee at the annual rate of 0.25% of the average weekly managed assets
of the Fund for the first five full years of the Fund's operation (through June
30, 2007) and a declining amount for an additional three years (0.18% of the
average weekly managed in 2008, 0.11% of the average weekly managed in 2009, and
0.04% in 2010).

Under the terms of the Administration Agreement, CAM pays the Administrator,
Princeton Administrators, L.P. a monthly fee at an annual rate of 0.125% of the
Fund's average weekly managed assets, subject to a monthly minimum fee of
$12,500.

Certain portfolio transactions for the Fund may be executed through CALAMOS
FINANCIAL SERVICES, INC. ("CFS") as broker, consistent with the Fund's policy of
obtaining best price and execution. During the year ended October 31, 2003, the
Fund paid no brokerage commissions to CFS on purchases or sales of Fund
securities.

Certain officers and trustees of the Fund are also officers and directors of CFS
and CAM. All officers and affiliated trustees serve without direct compensation
from the Fund.

The Fund has adopted a deferred compensation plan (the "Plan"). Under the Plan,
a trustee who is not an "interested person" of CAM and has elected to
participate in the Plan (a "participating trustee") may defer receipt of all or
a portion of his 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 trustee. The
value of a trustee's deferred compensation account at any time is equal to what
would be the value if the amounts credited to the account had instead been
invested in shares of one or more of the Funds of the Calamos Investment Trust
as designated by the trustee. Thus, 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. If a participating
trustee retires, the trustee may elect to receive payments under the Plan in a
lump sum or in equal installments over a period of five years. If a
participating trustee dies, any amount payable under the Plan will be paid to
the trustee's beneficiaries. Deferred compensation investments of $14,779 are
included in "Other Assets" on the Statement of Assets and Liabilities at October
31, 2003. The Fund's obligation to make payments under the Plan is a general
obligation of the Fund.

NOTE 3 - INVESTMENTS
Purchases and sales of investments other than short term obligations for the
year ended October 31, 2003 were as follows:


                                                             
Purchases                                                       $366,347,909
Proceeds from sales                                              383,444,846


The following information is presented on an income tax basis as of October 31,
2003. Differences between amounts for financial statements and Federal income
tax purposes are primarily due to timing differences. The cost basis of
investments for Federal income tax purposes at October 31, 2003 was as follows:


                                                             
Cost basis of investments                                       $1,088,073,133
Gross unrealized appreciation                                      132,638,709
Gross unrealized depreciation                                       (1,686,160)
                                                                --------------
Net unrealized appreciation (depreciation) of investments       $  130,952,549
                                                                ==============


 10

                         NOTES TO FINANCIAL STATEMENTS

NOTE 4 - FORWARD FOREIGN CURRENCY CONTACTS
The Fund may engage in portfolio hedging with respect to changes in currency
exchange rates by entering into 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 movement in the value of the foreign
currency relative to the U.S. dollar and the ability to the counterparty to
perform. 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 exchange rates and an unrealized gain or loss is recorded. The Fund
realizes a gain or loss upon settlement of the contracts. There were no open
forward foreign currency contracts at October 31, 2003.

NOTE 5 - DISTRIBUTIONS TO SHAREHOLDERS

The tax character of distributions paid during the periods ended October 31,
2003 and October 31, 2002 were as follows:



                                                                OCTOBER 31, 2003    OCTOBER 31, 2002
----------------------------------------------------------------------------------------------------
                                                                              
Distribution paid from:
Ordinary income                                                   $ 74,123,182        $13,030,657
Net long-term capital gains                                                 --                 --
                                                                  ------------        -----------
Total taxable distribution                                          72,123,182        $13,030,657
                                                                  ============        ===========
As of October 31, 2003, the components of accumulated
  earnings/(losses) on a tax basis were as follows:
Undistributed ordinary income -- net                                22,302,635
Undistributed long-term capital gains -- net                         5,444,071
                                                                  ------------
Total undistributed earnings -- net                                 27,746,706
Capital loss carryforward                                                   --
Unrealized gains/(losses) -- net                                   135,829,262*
                                                                  ------------
Total accumulated earnings/(losses) -- net                        $163,575,968
                                                                  ============


* The difference between book-basis and tax-basis unrealized gains/(losses) is
  attributable to the difference between book and tax amortization methods for
  premiums and discounts on fixed income securities and other temporary book/tax
  differences.

NOTE 6 - COMMON STOCK
There are unlimited common shares of beneficial interest authorized and
43,904,538 shares outstanding at October 31, 2003. CAM owned 7,153 of the
outstanding shares. Transactions in common shares were as follows:



                                                                   YEAR ENDED         PERIOD ENDED
                                                                OCTOBER 31, 2003    OCTOBER 31, 2002
----------------------------------------------------------------------------------------------------
                                                                              
Beginning shares                                                   43,267,593                  --
Shares sold                                                                --          43,232,000
Shares issued through reinvestment of distributions                   636,945              35,593
                                                                   ----------          ----------
Ending shares                                                      43,904,538          43,267,593
                                                                   ----------          ----------


NOTE 7 - PREFERRED SHARES
There are unlimited shares of Auction Market Preferred Shares ("Preferred
Shares") authorized. The Preferred Shares have rights as determined by the Board
of Trustees. The 8,160 shares of Preferred Shares outstanding consist of four
series, 2,040 shares of M, 2,040 shares of TU, 2,040 shares of W, and 2,040
shares of TH. The Preferred Shares have a liquidation value of $25,000 per share
plus any accumulated but unpaid dividends whether or not declared.

Dividends on the Preferred Shares are cumulative at a rate typically reset every
seven and twenty-eight days based on the results of an auction. Dividend rates
ranged from 0.95% to 1.95% for the year ended October 31, 2003. Under the
Investment Company Act of 1940, the Fund may not declare dividends or make other
distribution on shares of common stock or purchases any such shares if, at the
time of the declaration, distribution or purchase, asset coverage with respect
to the outstanding Preferred Shares would be less than 200%.

                                                                              11

                         NOTES TO FINANCIAL STATEMENTS

The Preferred Shares are redeemable at the option of the Fund, in whole or in
part, on any dividend payment date at $25,000 per share plus any accumulated but
the unpaid dividends. The Preferred Shares are also subject to mandatory
redemption at $25,000 per share plus any accumulated but unpaid dividends,
whether or not declared, if certain requirements relating to the composition of
the assets and liabilities of the Fund as set forth in the Statement of
Preferences are not satisfied.

The holders of Preferred Shares have voting rights equal to the holders of
common stock (one vote per share) and will vote together with holders of shares
of common stock as a single class except on matters affecting only the holders
of preferred shares or the holders of common shares.

NOTE 8 - INTEREST RATE TRANSACTIONS
The Fund may enter into interest rate swap or cap transactions to attempt to
protect itself from increasing dividend or interest expense on its leverage
resulting from increasing short-term interest rates. A decline in interest rates
may result in a decline in the value of the swap or cap, which may result in a
decline in the net asset value of the Fund. In addition, if the counterparty to
an interest rate swap or cap defaults, the Fund would not be able to use the
anticipated receipts under the swap or cap to offset the dividend or interest
payments on the Fund's leverage. At the time an interest rate swap or cap
reaches its scheduled termination, there is a risk that the Fund would not be
able to obtain a replacement transaction or that the terms of the replacement
would not be as favorable as on the expiring transaction. In addition, if the
Fund is required to terminate any swap or cap early due to the Fund failing to
maintain a required 200% asset coverage of the liquidation value of the
outstanding preferred shares or the Fund loses its credit rating on its
preferred shares, then the Fund could be required to make a termination payment,
in addition to redeeming all or some of the preferred shares. Details of the
swap agreements outstanding as of October 31, 2003 were as follows:



                                                      TERMINATION       NOTIONAL                                      UNREALIZED
                   COUNTERPARTY                           DATE        AMOUNT (000)    FIXED RATE    FLOATING RATE    APPRECIATION
---------------------------------------------------------------------------------------------------------------------------------
                                                                                                      
Merrill Lynch                                         July 3, 2006      $65,000         1.910%      1 month LIBOR     $1,080,885
Merrill Lynch                                         July 3, 2007       65,000         2.325%      1 month LIBOR      1,667,250
Merrill Lynch                                         July 3, 2008       70,000         2.685%      1 month LIBOR      2,375,450
                                                                                                                      ----------
                                                                                                                      $5,123,585
                                                                                                                      ==========


NOTE 9 - OTHER
SECURITIES LENDING.  During the period ended October 31, 2003, the Fund lent
certain of its securities to broker-dealers and banks. Any such loan must be
continuously secured by collateral in cash or cash equivalents maintained on a
current basis in an amount at least equal to the market value of the securities
loaned by the Fund. The Fund would continue to receive the equivalent of the
interest or dividends paid by the issuer on the securities loaned, and would
also receive an additional return that may be in the form of a fixed fee or a
percentage of the collateral. The Fund may pay reasonable fees to persons
unaffiliated with the Fund for services in arranging these loans. The Fund would
have the right to call the loan and obtain the securities loaned at any time on
notice of not more than five business days. The Fund would not have the right to
vote the securities during the existence of the loan but generally would call
the loan in an attempt to permit voting of the securities. In the event of
bankruptcy or other default of the borrower, the Fund could experience both
delays in liquidating the loan collateral or recovering the loaned securities
and losses, including (a) possible decline in the value of the collateral or in
the value of the securities loaned during the period while the Fund seeks to
enforce its rights thereto, (b) possible subnormal levels of income and lack of
access to income during this period, and (c) expenses of enforcing its rights.
In an effort to reduce these risks, the investment manager will monitor the
creditworthiness of the firms to which the Fund lends securities. At October 31,
2003, the Fund had securities valued at $237,259,803 on loan to brokers, dealers
and banks and $247,000,350 in cash collateral.

NOTE 10 - SUBSEQUENT EVENT
On November 14, 2003, the Fund offered an additional 7,200 Preferred Shares. The
additional Preferred Shares consisted of three additional series, 2,400 shares
of Series W28, 2,400 shares of Series TH7, and 2,400 shares of Series F7. The
terms of
 12

                         NOTES TO FINANCIAL STATEMENTS

the additional Preferred Shares and all other series of Preferred Shares of the
Fund previously offered are substantially the same. The additional Preferred
Shares have a liquidation preference of $25,000 per share, plus any accumulated,
unpaid dividends and also have priority over the Fund's common shares as to
distribution of assets. The additional Preferred Shares pay dividends based on a
rate set at auction, usually held weekly in the case of Series TH7 and Series F7
and every 28 days in the case of Series W28. Dividends on the additional
Preferred Shares are cumulative. The additional Preferred Shares were offered
with a rating of "Aaa" from Moody's and "AAA" from Fitch Ratings.

                                                                              13


                              FINANCIAL HIGHLIGHTS

       SELECTED DATA FOR A COMMON SHARE OUTSTANDING THROUGHOUT EACH PERIOD WAS
AS FOLLOWS:



                                                                   For the Period
                                                                 Ended October 31,
                                                                --------------------
                                                                  2003       2002*
------------------------------------------------------------------------------------
                                                                      
Net asset value, beginning of period                            $  13.56    $  14.32(a)
                                                                --------    --------
Income from investment operations:
Net investment income                                               1.75        0.39(b)
Net realized and unrealized gain (loss) on investments,
 foreign currency transactions and interest rate swaps              4.40       (0.77)
Dividends to preferred shareholders from
 Net investment income (common stock equivalent basis)             (0.06)      (0.01)
                                                                --------    --------
 Total from investment operations                                   6.09       (0.39)
------------------------------------------------------------------------------------
Less dividends to common shareholders from
 Net investment income                                             (1.64)      (0.29)
Capital charge resulting from issuance of common and
 preferred shares                                                   0.00       (0.08)
                                                                --------    --------
------------------------------------------------------------------------------------
Net asset value, end of period                                  $  18.01    $  13.56
                                                                ========    ========
Market value, end of period                                     $  19.60    $  14.20
------------------------------------------------------------------------------------
Total investment return based on(c):
Net Asset Value                                                    46.48%      -3.33%
Market Value                                                       52.22%      -3.33%
------------------------------------------------------------------------------------
Ratios and Supplementary Data:
Net assets applicable common shareholders, end of period
 (000's omitted)                                                 790,764     586,893
Preferred shares at redemption value ($25,000 per share
 liquidation preference) (000's omitted)                         204,000     204,000
Ratio to average net assets:
 Net expenses                                                       0.86%       0.79%(d)
 Gross expenses prior to waiver of expense by the adviser           1.18%       1.06%(d)
 Net investment income                                             10.78%       8.21%(d)
 Preferred share dividends                                          0.39%       0.23%(d)
 Net investment income, net of preferred share dividends           10.39%       7.99%(d)
Portfolio turnover rate                                               42%          2%
Asset coverage per preferred share, at end of period(e)         $121,907    $ 96,934
------------------------------------------------------------------------------------


*   The Fund commenced operations on June 28, 2002.
(a) Net of sales load of $0.68 on initial shares issued.
(b) Based on average shares method.
(c) 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.
(d) Annualized.
(e) Calculated by subtracting the Fund's total liabilities (not including
    preferred shares) from the Fund's total assets and dividing this by the
    number of preferred shares outstanding.

 14


                          INDEPENDENT AUDITORS' REPORT

To the Board of Trustees and Shareholders
CALAMOS Convertible Opportunities and Income Fund

We have audited the accompanying statement of assets and liabilities of CALAMOS
Convertible Opportunities and Income Fund (the "Fund"), including the schedule
of investments, as of October 31, 2003, and the related statements of operations
and of changes in net assets and the financial highlights for the year then
ended. These financial statements and financial highlights are the
responsibility of the Fund's management. Our responsibility is to express an
opinion on these financial statements and financial highlights based on our
audit. The Fund's financial statements and financial highlights for the period
ended October 31, 2002 were audited by other auditors whose report, dated
December 16, 2002, expressed an unqualified opinion on those financial
statements and financial highlights.

We conducted our audit in accordance with auditing standards generally accepted
in the United States of America. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned as of
October 31, 2003, by correspondence with the custodian and brokers. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audit provides a reasonable basis for our
opinion.

In our opinion, the financial statements and financial highlights referred to
above present fairly, in all material respects, the financial position of
CALAMOS Convertible Opportunities and Income Fund at October 31, 2003, and the
results of its operations and changes in its net assets and the financial
highlights for the year then ended, in conformity with accounting principles
generally accepted in the United States of America.

/s/ Deloitte & Touche LLP

Chicago, Illinois
December 17, 2003

                                                                              15


                            IMPORTANT TAX AND OTHER

                           SUPPLEMENTARY INFORMATION
                                  (Unaudited)

The following information is provided with respect to the distributions paid by
the Fund during the fiscal year ended October 31, 2003:

QUALIFIED DIVIDEND INCOME FOR INDIVIDUALS

The following percentages apply to the ordinary income distributions paid during
the period January 2003 through October 2003:


                          
Common Shareholders          2.36%
Preferred Shareholders:
      Series M               2.36%
      Series TU              2.36%
      Series W               2.36%
      Series TH              2.36%


DIVIDENDS QUALIFYING FOR THE DIVIDENDS RECEIVED DEDUCTION FOR CORPORATIONS

The following percentages apply to the ordinary income distributions paid during
the fiscal year-ended October 31, 2003:



                                          DECEMBER 2002-
                         NOVEMBER 2002     OCTOBER 2003
                         -------------------------------
                                    
Common Shareholders          0.59%            2.23%
Preferred
  Shareholders:
      Series M               2.23%            2.23%
      Series TU              2.23%            2.23%
      Series W               2.23%            2.23%
      Series TH              2.23%            2.23%


INDEPENDENT ACCOUNTANT CHANGE

Effective April 14, 2003, the Fund's Audit Committee of its Board of Trustees
selected Deloitte & Touche LLP as the Fund's independent accountant. Also
effective April 14, 2003, the client-auditor relationship between the Fund and
Ernst & Young LLP ceased. The cessation of this relationship was based on the
desire to retain the same independent accountant for the Fund as an affiliated
closed-end fund, and to diversify the expertise provided to the funds within the
CALAMOS fund complex.

NON-FUNDAMENTAL INVESTMENT GUIDELINE CHANGE

During the period, the Board of Trustees approved a non-fundamental investment
policy to increase the limitation on financial leverage from approximately 33%
of managed assets to approximately 38% of managed assets.

 16


                              TRUSTEES & OFFICERS

The management of the Fund, including general supervision of the duties
performed for the Fund under the Investment Management Agreement, is the
responsibility of its board of trustees.

The following table sets forth, as of October 31, 2003 each trustee's
position(s) with the Trust, age, principal occupation during the past five
years, number of portfolios overseen, other directorships, and the date on which
the trustee first became a trustee of the Trust.


                                                              POSITION(S) HELD WITH TRUST  NUMBER OF PORTFOLIOS
NAME AND AGE AT                                                AND DATE FIRST ELECTED OR     IN FUND COMPLEX
OCTOBER 31, 2003                                                  APPOINTED TO OFFICE      OVERSEEN BY TRUSTEE
---------------------------------------------------------------------------------------------------------------
                                                                                     
TRUSTEES WHO ARE INTERESTED PERSONS OF THE TRUST:
John P. Calamos, Sr., 63*                                     Trustee and President                 10
                                                              (since 2002)
Nick P. Calamos, 42*                                          Trustee and Vice President            10
                                                              (since 2002)
Weston W. Marsh, 53*                                          Trustee (since 2002)                  10
TRUSTEES WHO ARE NOT INTERESTED PERSONS OF THE TRUST:
Richard J. Dowen, 59                                          Trustee (since 2002)                  10
Joe F. Hanauer, 66                                            Trustee (since 2002)                  10
John E. Neal, 53                                              Trustee (since 2002)                  10
William Rybak, 52                                             Trustee (since 2002)                  10



NAME AND AGE AT                                                     PRINCIPAL OCCUPATION(S) DURING THE PAST 5 YEARS
OCTOBER 31, 2003                                                              AND OTHER DIRECTORSHIPS HELD
------------------------------------------------------------  ------------------------------------------------------------
                                                           
TRUSTEES WHO ARE INTERESTED PERSONS OF THE TRUST:
John P. Calamos, Sr., 63*                                     President and CEO, Calamos Holdings, Inc. ("CHI"), Calamos
                                                              Asset Management, Inc. ("CAM") and Calamos Financial
                                                              Services, Inc. ("CFS")
Nick P. Calamos, 42*                                          Senior Executive Vice President, CHI, CAM and CFS
Weston W. Marsh, 53*                                          Partner, Freeborn & Peters (law firm)
TRUSTEES WHO ARE NOT INTERESTED PERSONS OF THE TRUST:
Richard J. Dowen, 59                                          Chair and Professor of Finance, Northern Illinois University
Joe F. Hanauer, 66                                            Director, MAF Bancorp (banking); Director, Homestore.com,
                                                              Inc. (Internet provider of real estate information and
                                                              products); Director, Combined Investments, L.P. (investment
                                                              management)
John E. Neal, 53                                              Managing Director, Bank One Capital Markets, Inc.
                                                              (investment banking) (since 2000); and Executive Vice
                                                              President and Head of Real Estate Department, Bank One
                                                              (1998-2000); Director, The Brickman Group, Ltd.
William Rybak, 52                                             Retired Private Investor; Executive Vice President and CFO,
                                                              Van Kampen Investments, Inc. (investment manager), prior
                                                              thereto; Director, Howe Barnes Investments


* John P. Calamos and Nick P. Calamos are trustees who are "interested persons"
  of the Trust as defined in the Investment Company Act of 1940 (the "1940 Act")
  because of their position with Calamos. Weston W. Marsh is a trustee who is an
  "interested person" of the Trust as defined in the 1940 Act because he is a
  partner at a law firm that has performed work for one or more principal
  underwriters. In addition, Mr. Marsh is a partner at a law firm that has
  performed work for John P. Calamos, the chief executive and a controlling
  person of Calamos (such work was not with respect to 1940 Act or Investment
  Advisers Act of 1940 matters). Upon the advice of counsel to the Trust, the
  Trust does not believe that Mr. Marsh is an "interested person" of Calamos.

Officers.  Messrs. John Calamos and Nick Calamos are president and vice
president of the Trust, respectively. The preceding table gives more information
about Messrs. John Calamos and Nick Calamos. The following table sets forth, as
of October 31, 2003 each other officer's name, position with the Trust, age,
principal occupation during the past five years, other directorships, and the
date on which he or she first became an officer of the Trust. Each officer
serves until his or her successor is chosen and qualified or until his or her
resignation or removal by the board of trustees.



                          POSITION(S) HELD WITH TRUST AND
NAME AND AGE AT           DATE FIRST ELECTED OR APPOINTED        PRINCIPAL OCCUPATION(S) DURING THE PAST 5 YEARS
OCTOBER 31, 2003                     TO OFFICE                             AND OTHER DIRECTORSHIPS HELD
-----------------------------------------------------------------------------------------------------------------------
                                                     
Rhowena Blank, 35         Treasurer (since 2002)           Vice President-Operations, CAM (since 1999); Vice President,
                                                           CFS (since 2000); and Director of Operations, Christian
                                                           Brothers Investment Services (1998-1999)
Patrick H. Dudasik, 48    Vice President (since 2002)      Executive Vice President, Chief Financial and Administrative
                                                           Officer, and Treasurer of CHI, CAM and CFS (since 2001); and
                                                           Chief Financial Officer, David Gomez and Associates, Inc.
                                                           (1998-2001) (executive search firm)
James S. Hamman, Jr., 34  Secretary (since 2002)           Executive Vice President and General Counsel, CHI, CAM and
                                                           CFS (since 1998)
Jeff Lotito, 31           Assistant Treasurer (since       Operations Manager, CAM (since 2000); Manager-Fund
                          2002)                            Administration, Van Kampen (1999-2000) (investment
                                                           management); and Supervisor-Corporate Accounting, Stein Roe
                                                           and Farnham (1998-1999) (investment management)
Ian J. McPheron, 32       Assistant Secretary (since       Associate Counsel and Director of Compliance of CAM and CFS
                          2003)                            (since 2002); Associate, Gardner, Carton & Douglas (law
                                                           firm) (2002); Vice President, Associate General Counsel and
                                                           Assistant Secretary, Van Kampen Investments, Inc.
                                                           (2000-2002); Associate, Wildman, Harrold, Allen & Dixon (law
                                                           firm) (1997-2000)


PROXY VOTING POLICIES.  A description of the CALAMOS Proxy Voting Policies and
Procedures is available by calling (800) 582-6959, by visiting its website at
www.calamos.com or by writing CALAMOS at: CALAMOS INVESTMENTS, Attn: Client
Services, 1111 East Warrenville Road, Naperville, IL 60563, and on the
Securities and Exchange Commission's website at www.sec.gov.

                                                                              17


    FOR 24 HOUR SHAREHOLDER ASSISTANCE
    800.432.8224

    TO OBTAIN INFORMATION
    800.582.6959

    VISIT OUR WEB-SITE
    www.calamos.com

    INVESTMENT ADVISER
    CALAMOS ASSET MANAGEMENT, INC.
    1111 E. Warrenville Road
    Naperville, IL 60563-1463

    ADMINISTRATOR
    Princeton Administrators, L.P.
    P.O. Box 9095
    Princeton, NJ 08543-9095

    CUSTODIAN AND TRANSFER AGENT
    The Bank of New York
    P.O. Box 11258
    Church Street Station
    New York, NY 10286
    800.524.4458

    INDEPENDENT AUDITORS
    Deloitte & Touche LLP
    Chicago, IL

    LEGAL COUNSEL
    Bell, Boyd & Lloyd LLC
    Chicago, IL

[RECYCLED LOGO]                                                       1790 10-03

ITEM 2.  CODE OF ETHICS.

(a) The registrant has adopted a code of ethics (the "Code of Ethics") that
    applies to its principal executive officer, principal financial officer,
    principal accounting officer or controller, or person performing similar
    functions.

(b) Not applicable.

(c) The registrant has not amended its Code of Ethics during the period covered
    by the shareholder report presented in Item 1 hereto.

(d) The registrant has not granted a waiver or an implicit waiver from its Code
    of Ethics during the period covered by the shareholder report presented in
    Item 1 hereto.

(e) Not applicable.

(f) (a) The registrant's Code of Ethics is attached as an Exhibit hereto.

ITEM 3.  AUDIT COMMITTEE FINANCIAL EXPERT.

The registrant's Board of Trustees has determined that, for the period covered
by the shareholder report presented in Item 1 hereto, it has three audit
committee financial experts serving on its audit committee, each of whom is an
independent Trustee for purpose of this N-CSR item: Richard J. Dowen, John E.
Neal and William Rybak. Under applicable securities laws, a person who is
determined to be an audit committee financial expert will not be deemed an
"expert" for any purpose, including without limitation for the purposes of
Section 11 of the Securities Act of 1933, as a result of being designated or
identified as an audit committee financial expert. The designation or
identification of a person as an audit committee financial expert does not
impose on such person any duties, obligation, or liabilities that are greater
than the duties, obligations and liabilities imposed on such person as a member
of audit committee and Board of Trustees in the absence of such designation or
identification.

ITEM 4.  PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Applicable only for reports covering fiscal years on or after December 15, 2003.

ITEM 5.  AUDIT COMMITTEE OF LISTED REGISTRANTS.

Applicable only for reports covering period ending on after the earlier of (i)
the first annual meeting after January 15, 2004 or (ii) October 31, 2004.

ITEM 6.  [RESERVED.]

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

The registrant has delegated the voting of proxies relating to its voting
securities to its investment adviser, Calamos Asset Management, Inc. ("CAM"). A
description of Proxy Voting Policies and Procedures of CAM are included as an
Exhibit hereto.

ITEM 8.  [RESERVED.]

ITEM 9.  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 timely.

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 registrant's last fiscal half-year (the
    registrant's second fiscal half-year in the case of an annual report) that
    has materially affected, or is reasonably likely to materially affect, the
    registrant's internal control over financial reporting.

ITEM 10.  EXHIBITS.

(a)(1) Code of Ethics

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

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

(b) Description of Proxy Voting Policies and Procedures



                                   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 Convertible Opportunities and Income Fund

By:    /s/ John P. Calamos, Sr.
   -----------------------------------------------------------------------------
Name:  John P. Calamos, Sr.
Title: Principal Executive Officer
Date:  January 9, 2004

By:    /s/ Patrick H. Dudasik
   -----------------------------------------------------------------------------
Name:  Patrick H. Dudasik
Title: Principal Financial Officer
Date:  January 9, 2004


         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.

Calamos Convertible Opportunities and Income Fund

By:   /s/ John P. Calamos, Sr.
   -----------------------------------------------------------------------------
Name:  John P. Calamos, Sr.
Title: Principal Executive Officer
Date:  January 9, 2004

By:   /s/ Patrick H. Dudasik
   -----------------------------------------------------------------------------
Name:  Patrick H. Dudasik
Title: Principal Financial Officer
Date:  January 9, 2004