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CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND

Regulatory Filings Sep 19, 2011

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N-Q 1 c65512nvq.htm FORM N-Q nvq PAGEBREAK

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS 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: 2020 Calamos Court, Naperville Illinois 60563
NAME AND ADDRESS OF AGENT FOR SERVICE: John P. Calamos Sr., President Calamos Advisors LLC, 2020 Calamos Court, Naperville, Illinois 60563

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

DATE OF FISCAL YEAR END: October 31, 2011

DATE OF REPORTING PERIOD: July 31, 2011

Folio /Folio

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Calamos Convertible Opportunities and Income Fund

SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

PRINCIPAL — AMOUNT VALUE
CORPORATE BONDS
(72.7%)
Consumer Discretionary (14.1%)
3,539,000 American Axle & Manufacturing, Inc. 7.875%, 03/01/17 $ 3,631,899
3,176,000 Asbury Automotive Group, Inc.µ 7.625%, 03/15/17 3,183,940
3,063,000 Cedar Fair, LP 9.125%, 08/01/18 3,327,184
5,546,000 Cooper Tire & Rubber Companyµ 8.000%, 12/15/19 5,809,435
1,672,000 Dana Holding Corp. 6.750%, 02/15/21 1,707,530
DISH Network Corp.µ
5,717,000 7.875%, 09/01/19 6,310,139
4,787,000 7.125%, 02/01/16 5,134,057
5,445,000 Exide Technologiesµ* 8.625%, 02/01/18 5,581,125
3,630,000 Express, LLC 8.750%, 03/01/18 3,938,550
1,069,000 GameStop Corp. 8.000%, 10/01/12 1,087,708
Goodyear Tire & Rubber Companyµ
5,754,000 8.250%, 08/15/20 6,343,785
781,000 7.000%, 03/15/28 769,285
5,218,000 Hanesbrands, Inc.µ‡ 3.770%, 12/15/14 5,231,045
3,630,000 Hasbro, Inc.µ 6.600%, 07/15/28 3,956,214
1,025,000 Interpublic Group of Companies, Inc.µ 10.000%, 07/15/17 1,217,187
J.C. Penney Company, Inc.
2,826,000 6.375%, 10/15/36 2,536,335
2,604,000 7.125%, 11/15/23 2,714,670
Jaguar Land Rover, PLC*
2,722,000 8.125%, 05/15/21µ 2,769,635
2,133,000 7.750%, 05/15/18 2,175,660
5,318,000 Jarden Corp.µ 7.500%, 05/01/17 5,590,547
2,722,000 Liberty Media Corp.µ 8.250%, 02/01/30 2,687,975
Limited Brands, Inc.
2,722,000 7.600%, 07/15/37 2,728,805
1,405,000 6.625%, 04/01/21 1,461,200
712,000 6.950%, 03/01/33 662,160
2,722,000 Live Nation Entertainment, Inc.* 8.125%, 05/15/18 2,783,245
4,084,000 Macy’s Retail Holdings, Inc.µ 5.900%, 12/01/16 4,660,150
3,875,000 NetFlix, Inc.µ 8.500%, 11/15/17 4,398,125
3,700,000 Perry Ellis International, Inc. 7.875%, 04/01/19 3,866,500
Royal Caribbean Cruises, Ltd.
4,537,000 7.500%, 10/15/27 4,605,055
1,815,000 7.250%, 06/15/16µ 1,964,737
907,000 7.000%, 06/15/13µ 973,891
Service Corp. International
6,352,000 7.500%, 04/01/27µ 6,193,200
907,000 7.625%, 10/01/18µ 1,015,840
907,000 7.000%, 05/15/19 972,758
1,361,000 Speedway Motorsports, Inc. 8.750%, 06/01/16 1,490,295
3,120,000 Vail Resorts, Inc.* 6.500%, 05/01/19 3,209,700
3,929,000 Wynn Las Vegas, LLCµ 7.750%, 08/15/20 4,361,190
121,050,756
Consumer Staples (1.8%)
Constellation Brands, Inc.
1,815,000 7.250%, 09/01/16µ 2,010,113
681,000 8.375%, 12/15/14 784,853
2,838,000 Darling International, Inc. 8.500%, 12/15/18 3,139,537
2,269,000 Dean Foods Company* 9.750%, 12/15/18 2,439,175
113,000 Elizabeth Arden, Inc. 7.375%, 03/15/21 118,085
3,210,000 JBS USA, LLC* 7.250%, 06/01/21 3,185,925
3,115,000 Reynolds American, Inc.µ 7.250%, 06/15/37 3,471,935
15,149,623
Energy (15.1%)
13,612,000 NOK Aker Solutions, ASA 8.700%, 06/26/14 2,724,369
Arch Coal, Inc.µ
5,182,000 7.250%, 10/01/20 5,447,577
681,000 8.750%, 08/01/16 759,315
2,987,000 Arch Western Finance, LLC 6.750%, 07/01/13 3,020,604
4,330,000 Basic Energy Services, Inc.µ* 7.750%, 02/15/19 4,449,075
Berry Petroleum Company
4,792,000 8.250%, 11/01/16µ 5,031,600
1,815,000 10.250%, 06/01/14 2,082,713
3,630,000 Brigham Exploration Company 8.750%, 10/01/18 4,101,900
7,441,000 Bristow Group, Inc.µ 7.500%, 09/15/17 7,831,652
6,806,000 Calfrac Holdings, LPµ* 7.500%, 12/01/20 7,027,195
7,260,000 Carrizo Oil & Gas, Inc. 8.625%, 10/15/18 7,768,200
5,445,000 Clayton Williams Energy, Inc.µ* 7.750%, 04/01/19 5,322,487

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Calamos Convertible Opportunities and Income Fund

SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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PRINCIPAL — AMOUNT VALUE
3,630,000 Complete Production Services, Inc.µ 8.000%, 12/15/16 $ 3,829,650
5,717,000 Comstock Resources, Inc.µ 8.375%, 10/15/17 6,088,605
4,392,000 Concho Resources, Inc.µ 8.625%, 10/01/17 4,853,160
Frontier Oil Corp.
5,518,000 8.500%, 09/15/16 5,945,645
740,000 6.875%, 11/15/18 793,650
2,813,000 GulfMark Offshore, Inc.µ 7.750%, 07/15/14 2,851,679
5,082,000 Helix Energy Solutions Group, Inc.µ* 9.500%, 01/15/16 5,361,510
1,842,000 HollyFrontier Corp.µ 9.875%, 06/15/17 2,076,855
2,659,000 Hornbeck Offshore Services, Inc.µ 8.000%, 09/01/17 2,732,123
907,000 Linn Energy, LLC* 6.500%, 05/15/19 908,134
3,630,000 Pride International, Inc.µ 8.500%, 06/15/19 4,695,017
3,630,000 SEACOR Holdings, Inc. 7.375%, 10/01/19 4,015,027
5,899,000 SESI, LLCµ 6.875%, 06/01/14 6,009,606
3,463,000 SM Energy Company* 6.625%, 02/15/19 3,584,205
Swift Energy Companyµ
4,900,000 8.875%, 01/15/20 5,365,500
2,269,000 7.125%, 06/01/17 2,348,415
4,084,000 Trinidad Drilling, Ltd.µ* 7.875%, 01/15/19 4,308,620
454,000 Unit Corp. 6.625%, 05/15/21 460,810
4,991,000 W & T Offshore, Inc.* 8.500%, 06/15/19 5,196,879
2,162,000 Whiting Petroleum Corp.µ 6.500%, 10/01/18 2,237,670
129,229,447
Financials (2.7%)
2,179,000 AON Corp. 8.205%, 01/01/27 2,516,745
1,906,000 Janus Capital Group, Inc.µ 6.700%, 06/15/17 2,114,032
Leucadia National Corp.µ
7,033,000 8.125%, 09/15/15 7,771,465
1,117,000 7.125%, 03/15/17 1,168,661
4,084,000 Nuveen Investments, Inc. 10.500%, 11/15/15 4,277,990
OMEGA Healthcare Investors, Inc.
2,859,000 7.500%, 02/15/20µ 3,069,851
1,815,000 6.750%, 10/15/22 1,855,838
22,774,582
Health Care (7.4%)
1,815,000 Bio-Rad Laboratories, Inc. 8.000%, 09/15/16 2,039,606
1,815,000 Community Health Systems, Inc. 8.875%, 07/15/15 1,880,794
6,750,000 DaVita, Inc.µ 6.625%, 11/01/20 6,918,750
Endo Pharmaceuticals Holdings, Inc.*
6,806,000 7.000%, 12/15/20µ 7,129,285
907,000 7.000%, 07/15/19 954,617
6,806,000 Giant Funding Corp.µ* 8.250%, 02/01/18 7,197,345
2,722,000 HCA, Inc.* 7.750%, 05/15/21 2,783,245
HealthSouth Corp.µ
2,496,000 7.750%, 09/15/22 2,670,720
1,996,000 7.250%, 10/01/18 2,100,790
Mylan, Inc.*
3,920,000 7.625%, 07/15/17 4,321,800
2,949,000 7.875%, 07/15/20 3,288,135
4,422,000 Teleflex, Inc. 6.875%, 06/01/19 4,576,770
Valeant Pharmaceuticals International, Inc.*
5,626,000 7.000%, 10/01/20µ 5,457,220
3,176,000 7.250%, 07/15/22 3,072,780
953,000 6.750%, 10/01/17µ 936,323
8,043,000 Warner Chilcott Company, LLCµ* 7.750%, 09/15/18 8,163,645
63,491,825
Industrials (11.3%)
4,458,000 Abengoa, SA* 8.875%, 11/01/17 4,502,580
BE Aerospace, Inc.
4,084,000 8.500%, 07/01/18µ 4,517,925
306,000 6.875%, 10/01/20 330,480
Belden, Inc.
3,857,000 7.000%, 03/15/17µ 3,972,710
907,000 9.250%, 06/15/19 1,010,171
3,545,000 Boart Longyear Management Pty., Ltd.* 7.000%, 04/01/21 3,660,212
2,314,000 Clean Harbors, Inc.* 7.625%, 08/15/16 2,470,196
Deluxe Corp.µ
4,991,000 7.000%, 03/15/19* 4,991,000
4,215,000 7.375%, 06/01/15 4,362,525
3,757,000 Dycom Investments, Inc. 7.125%, 01/15/21 3,850,925
2,142,000 Esterline Technologies Corp.µ 7.000%, 08/01/20 2,281,230
2,042,000 FTI Consulting, Inc. 6.750%, 10/01/20 2,093,050
GEO Group, Inc.
2,269,000 6.625%, 02/15/21* 2,280,345
681,000 7.750%, 10/15/17 732,075

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Calamos Convertible Opportunities and Income Fund

SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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PRINCIPAL — AMOUNT VALUE
3,591,000 GeoEye, Inc.µ 8.625%, 10/01/16 $ 3,860,325
1,290,000 Great Lakes Dredge & Dock Corp.µ* 7.375%, 02/01/19 1,290,000
1,452,000 H&E Equipment Services, Inc.µ 8.375%, 07/15/16 1,506,450
Huntington Ingalls Industries, Inc.*
227,000 6.875%, 03/15/18 234,945
217,000 7.125%, 03/15/21 225,138
3,915,000 Interline Brands, Inc.µ 7.000%, 11/15/18 4,022,662
3,176,000 Manitowoc Company, Inc. 8.500%, 11/01/20 3,469,780
2,269,000 Mobile Mini, Inc. 7.875%, 12/01/20 2,376,778
Oshkosh Corp.
2,722,000 8.500%, 03/01/20µ 2,973,785
1,815,000 8.250%, 03/01/17 1,969,275
4,537,000 Sensata Technologies Holding, B.V.µ* 6.500%, 05/15/19 4,605,055
7,033,000 Spirit AeroSystems Holdings, Inc.µ 7.500%, 10/01/17 7,525,310
2,214,000 SPX Corp.µ 7.625%, 12/15/14 2,468,610
6,806,000 Terex Corp. 8.000%, 11/15/17 6,967,642
Triumph Group, Inc.
2,269,000 8.625%, 07/15/18µ 2,501,573
1,860,000 8.000%,
11/15/17 ~ 1,999,500
4,465,000 Tutor Perini Corp. 7.625%, 11/01/18 4,319,887
3,154,000 WESCO Distribution, Inc.µ 7.500%, 10/15/17 3,248,620
96,620,759
Information Technology (8.8%)
Advanced Micro Devices, Inc.µ
5,445,000 7.750%, 08/01/20 5,758,087
4,420,000 8.125%, 12/15/17 4,718,350
Amkor Technology, Inc.
4,084,000 7.375%, 05/01/18 4,216,730
3,630,000 6.625%, 06/01/21* 3,593,700
1,270,000 Anixter International, Inc.µ 5.950%, 03/01/15 1,300,163
4,338,000 Audatex North America, Inc.* 6.750%, 06/15/18 4,478,985
5,899,000 EH Holding Corp.* 7.625%, 06/15/21 6,105,465
Equinix, Inc.
4,084,000 7.000%, 07/15/21 4,257,570
2,813,000 8.125%, 03/01/18µ 3,108,365
454,000 Fidelity National Information Services, Inc. 7.875%, 07/15/20 486,915
522,000 Hynix Semiconductor, Inc.* 7.875%, 06/27/17 556,556
7,260,000 iGATE Corp.µ* 9.000%, 05/01/16 7,296,300
Jabil Circuit, Inc.µ
4,991,000 8.250%, 03/15/18 5,752,128
907,000 7.750%, 07/15/16 1,020,375
2,269,000 Lexmark International, Inc.µ 6.650%, 06/01/18 2,530,570
6,490,000 MEMC Electronic Materials, Inc.* 7.750%, 04/01/19 6,230,400
4,991,000 Sanmina-SCI Corp.* 7.000%, 05/15/19 4,878,703
Seagate Technology*
3,176,000 6.875%, 05/01/20 3,199,820
2,722,000 7.000%, 11/01/21µ 2,762,830
2,949,000 ViaSat, Inc. 8.875%, 09/15/16 3,111,195
75,363,207
Materials (5.6%)
2,496,000 Allegheny Ludlum Corp. 6.950%, 12/15/25 2,844,509
1,361,000 Ball Corp. 7.375%, 09/01/19 1,503,905
1,626,000 Boise Cascade Holdings, LLC 7.125%, 10/15/14 1,621,935
4,417,000 Clearwater Paper Corp. 7.125%, 11/01/18 4,632,329
5,817,000 Greif, Inc.µ 7.750%, 08/01/19 6,384,157
841,000 Kraton Polymers, LLC 6.750%, 03/01/19 856,769
2,514,000 Nalco Company 8.250%, 05/15/17 2,840,820
2,572,000 Neenah Paper, Inc. 7.375%, 11/15/14 2,636,300
5,445,000 Sealed Air Corp.µ* 6.875%, 07/15/33 4,939,410
3,321,000 Silgan Holdings, Inc.µ 7.250%, 08/15/16 3,561,772
Steel Dynamics, Inc.
7,296,000 7.750%, 04/15/16µ 7,752,000
907,000 7.625%, 03/15/20 977,293
Union Carbide Corp.µ
3,630,000 7.500%, 06/01/25 4,238,246
2,813,000 7.875%, 04/01/23 3,319,340
48,108,785
Telecommunication Services (4.5%)
4,274,000 CenturyLink, Inc.µ 6.875%, 01/15/28 4,144,288
Frontier Communications Corp.
5,536,000 9.000%, 08/15/31µ 5,750,520
2,269,000 8.250%, 04/15/17 2,501,573
8,199,000 MetroPCS Wireless, Inc.µ 7.875%, 09/01/18 8,762,681

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SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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PRINCIPAL — AMOUNT VALUE
5,445,000 Qwest Communications International, Inc.µ 7.750%,
02/15/31 $ 5,608,350
Windstream Corp.
7,986,000 7.750%, 10/15/20µ 8,505,090
2,722,000 7.500%, 04/01/23 2,779,843
38,052,345
Utilities (1.4%)
Calpine Corp.*
3,403,000 7.875%, 07/31/20 3,607,180
2,949,000 7.500%, 02/15/21µ 3,066,960
NRG Energy, Inc.*
4,537,000 7.875%, 05/15/21 4,582,370
907,000 7.625%, 05/15/19 909,267
12,165,777
TOTAL CORPORATE BONDS (Cost $597,073,930) 622,007,106
CONVERTIBLE BONDS
(22.1%)
Consumer Discretionary (3.5%)
Interpublic Group of Companies, Inc.µ
4,490,000 4.750%, 03/15/23 5,107,375
2,500,000 4.250%, 03/15/23 2,618,750
10,000,000 Liberty Media Corp. (Time Warner, Inc.)µ§ 3.125%, 03/30/23 11,737,500
12,120,000 Liberty Media Corp. (Viacom, CBS Corp. - Class B)µ§ 3.250%, 03/15/31 10,483,800
29,947,425
Energy (1.6%)
Chesapeake Energy Corp.µ
8,500,000 2.250%, 12/15/38 7,958,125
5,000,000 2.750%, 11/15/35 5,843,750
13,801,875
Financials (0.8%)
3,000,000 Affiliated Managers Group, Inc.µ 3.950%, 08/15/38 3,371,250
2,850,000 Health Care REIT, Inc.µ 3.000%, 12/01/29 3,213,375
6,584,625
Health Care (3.3%)
2,000,000 Kinetic Concepts, Inc.* 3.250%, 04/15/15 2,865,000
9,250,000 LifePoint Hospitals, Inc.µ 3.500%, 05/15/14 9,747,188
3,000,000 Salix Pharmaceuticals, Ltd.µ 2.750%, 05/15/15 3,408,750
10,000,000 Shire, PLC 2.750%, 05/09/14 12,173,509
28,194,447
Industrials (1.5%)
2,150,000 Alliant Techsystems, Inc. 3.000%, 08/15/24 2,340,813
10,500,000 Trinity Industries, Inc.µ 3.875%, 06/01/36 10,447,500
12,788,313
Information Technology (8.2%)
1,450,000 GBP Autonomy Corp., PLC 3.250%, 03/04/15 2,668,132
5,500,000 Euronet Worldwide, Inc.µ 3.500%, 10/15/25 5,527,500
Intel Corp.µ
23,250,000 2.950%, 12/15/35 24,005,625
3,500,000 3.250%, 08/01/39 4,165,000
18,800,000 Linear Technology Corp.µ 3.000%, 05/01/27 19,599,000
4,000,000 ON Semiconductor Corp.µ 2.625%, 12/15/26 4,455,000
1,621,000 Rovi Corp.µ 2.625%, 02/15/40 2,099,195
6,250,000 Xilinx, Inc. 2.625%, 06/15/17 7,734,375
70,253,827
Materials (3.2%)
4,300,000 Anglo American, PLC 4.000%, 05/07/14 7,614,552
6,100,000 AngloGold Ashanti, Ltd.µ 3.500%, 05/22/14 7,071,425
8,010,000 Newmont Mining Corp.µ 3.000%, 02/15/12 9,962,437
2,620,000 Steel Dynamics, Inc.µ 5.125%, 06/15/14 3,101,425
27,749,839
TOTAL CONVERTIBLE BONDS (Cost $179,758,286) 189,320,351
U.S. GOVERNMENT AND AGENCY
SECURITIES (0.6%)
United States Treasury
Note ~
3,630,000 1.000%, 03/31/12 3,648,571
1,633,000 0.875%, 01/31/12 1,638,614
TOTAL U.S. GOVERNMENT AND AGENCY SECURITIES (Cost $5,286,454) 5,287,185
SOVEREIGN BONDS (1.4%)
Federal Republic of Brazil
1,298,000 BRL 10.000%, 01/01/12 8,347,466
544,000 BRL 10.000%, 01/01/13 3,415,967
TOTAL SOVEREIGN BONDS (Cost $10,747,180) 11,763,433

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SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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PRINCIPAL — AMOUNT VALUE
SYNTHETIC CONVERTIBLE SECURITIES
(8.9%)
Corporate Bonds
(7.4%)
Consumer Discretionary (1.4%)
361,000 American Axle & Manufacturing, Inc. 7.875%, 03/01/17 $ 370,476
324,000 Asbury Automotive Group, Inc.µ 7.625%, 03/15/17 324,810
312,000 Cedar Fair, LP 9.125%, 08/01/18 338,910
565,000 Cooper Tire & Rubber Companyµ 8.000%, 12/15/19 591,837
170,000 Dana Holding Corp. 6.750%, 02/15/21 173,613
DISH Network Corp.µ
583,000 7.875%, 09/01/19 643,486
488,000 7.125%, 02/01/16 523,380
555,000 Exide Technologiesµ* 8.625%, 02/01/18 568,875
370,000 Express, LLC 8.750%, 03/01/18 401,450
109,000 GameStop Corp. 8.000%, 10/01/12 110,908
Goodyear Tire & Rubber Companyµ
586,000 8.250%, 08/15/20 646,065
80,000 7.000%, 03/15/28 78,800
532,000 Hanesbrands, Inc.µ‡ 3.770%, 12/15/14 533,330
370,000 Hasbro, Inc.µ 6.600%, 07/15/28 403,250
105,000 Interpublic Group of Companies, Inc.µ 10.000%, 07/15/17 124,688
J.C. Penney Company, Inc.
288,000 6.375%, 10/15/36 258,480
265,000 7.125%, 11/15/23 276,262
Jaguar Land Rover, PLC*
278,000 8.125%, 05/15/21µ 282,865
217,000 7.750%, 05/15/18 221,340
542,000 Jarden Corp.µ 7.500%, 05/01/17 569,777
278,000 Liberty Media Corp.µ 8.250%, 02/01/30 274,525
Limited Brands, Inc.
278,000 7.600%, 07/15/37 278,695
143,000 6.625%, 04/01/21 148,720
73,000 6.950%, 03/01/33 67,890
278,000 Live Nation Entertainment, Inc.* 8.125%, 05/15/18 284,255
416,000 Macy’s Retail Holdings, Inc.µ 5.900%, 12/01/16 474,687
395,000 NetFlix, Inc.µ 8.500%, 11/15/17 448,325
377,000 Perry Ellis International, Inc. 7.875%, 04/01/19 393,965
Royal Caribbean Cruises, Ltd.
463,000 7.500%, 10/15/27 469,945
185,000 7.250%, 06/15/16µ 200,263
93,000 7.000%, 06/15/13µ 99,859
Service Corp. International
648,000 7.500%, 04/01/27µ 631,800
93,000 7.625%, 10/01/18µ 104,160
93,000 7.000%, 05/15/19 99,743
139,000 Speedway Motorsports, Inc. 8.750%, 06/01/16 152,205
318,000 Vail Resorts, Inc.* 6.500%, 05/01/19 327,142
401,000 Wynn Las Vegas, LLCµ 7.750%, 08/15/20 445,110
12,343,891
Consumer Staples (0.2%)
Constellation Brands, Inc.
185,000 7.250%, 09/01/16µ 204,888
69,000 8.375%, 12/15/14 79,523
289,000 Darling International, Inc. 8.500%, 12/15/18 319,706
231,000 Dean Foods Company* 9.750%, 12/15/18 248,325
11,000 Elizabeth Arden, Inc. 7.375%, 03/15/21 11,495
327,000 JBS USA, LLC* 7.250%, 06/01/21 324,547
318,000 Reynolds American, Inc.µ 7.250%, 06/15/37 354,438
1,542,922
Energy (1.5%)
1,388,000 NOK Aker Solutions, ASA 8.700%, 06/26/14 277,801
Arch Coal, Inc.µ
528,000 7.250%, 10/01/20 555,060
69,000 8.750%, 08/01/16 76,935
305,000 Arch Western Finance, LLC 6.750%, 07/01/13 308,431
441,000 Basic Energy Services, Inc.µ* 7.750%, 02/15/19 453,128
Berry Petroleum Company
488,000 8.250%, 11/01/16µ 512,400
185,000 10.250%, 06/01/14 212,288
370,000 Brigham Exploration Company 8.750%, 10/01/18 418,100
759,000 Bristow Group, Inc.µ 7.500%, 09/15/17 798,847
694,000 Calfrac Holdings, LPµ* 7.500%, 12/01/20 716,555
740,000 Carrizo Oil & Gas, Inc. 8.625%, 10/15/18 791,800
555,000 Clayton Williams Energy, Inc.µ* 7.750%, 04/01/19 542,512

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SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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PRINCIPAL — AMOUNT VALUE
370,000 Complete Production Services, Inc.µ 8.000%, 12/15/16 $ 390,350
583,000 Comstock Resources, Inc.µ 8.375%, 10/15/17 620,895
448,000 Concho Resources, Inc.µ 8.625%, 10/01/17 495,040
Frontier Oil Corp.
562,000 8.500%, 09/15/16 605,555
75,000 6.875%, 11/15/18 80,438
287,000 GulfMark Offshore, Inc.µ 7.750%, 07/15/14 290,946
518,000 Helix Energy Solutions Group, Inc.µ* 9.500%, 01/15/16 546,490
188,000 HollyFrontier Corp.µ 9.875%, 06/15/17 211,970
271,000 Hornbeck Offshore Services, Inc.µ 8.000%, 09/01/17 278,453
93,000 Linn Energy, LLC* 6.500%, 05/15/19 93,116
370,000 Pride International, Inc.µ 8.500%, 06/15/19 478,555
370,000 SEACOR Holdings, Inc. 7.375%, 10/01/19 409,245
601,000 SESI, LLCµ 6.875%, 06/01/14 612,269
353,000 SM Energy Company* 6.625%, 02/15/19 365,355
Swift Energy Companyµ
500,000 8.875%, 01/15/20 547,500
231,000 7.125%, 06/01/17 239,085
416,000 Trinidad Drilling, Ltd.µ* 7.875%, 01/15/19 438,880
46,000 Unit Corp. 6.625%, 05/15/21 46,690
509,000 W & T Offshore, Inc.* 8.500%, 06/15/19 529,996
220,000 Whiting Petroleum Corp.µ 6.500%, 10/01/18 227,700
13,172,385
Financials (0.3%)
222,000 AON Corp. 8.205%, 01/01/27 256,410
194,000 Janus Capital Group, Inc.µ 6.700%, 06/15/17 215,174
Leucadia National Corp.µ
717,000 8.125%, 09/15/15 792,285
114,000 7.125%, 03/15/17 119,273
416,000 Nuveen Investments, Inc. 10.500%, 11/15/15 435,760
OMEGA Healthcare Investors, Inc.
291,000 7.500%, 02/15/20µ 312,461
185,000 6.750%, 10/15/22 189,163
2,320,526
Health Care (0.8%)
185,000 Bio-Rad Laboratories, Inc. 8.000%, 09/15/16 207,894
185,000 Community Health Systems, Inc. 8.875%, 07/15/15 191,706
688,000 DaVita, Inc.µ 6.625%, 11/01/20 705,200
Endo Pharmaceuticals Holdings, Inc.*
694,000 7.000%, 12/15/20µ 726,965
93,000 7.000%, 07/15/19 97,882
694,000 Giant Funding Corp.µ* 8.250%, 02/01/18 733,905
278,000 HCA, Inc.* 7.750%, 05/15/21 284,255
HealthSouth Corp.µ
254,000 7.750%, 09/15/22 271,780
204,000 7.250%, 10/01/18 214,710
Mylan, Inc.*
400,000 7.625%, 07/15/17 441,000
301,000 7.875%, 07/15/20 335,615
451,000 Teleflex, Inc. 6.875%, 06/01/19 466,785
Valeant Pharmaceuticals International, Inc.*
574,000 7.000%, 10/01/20µ 556,780
324,000 7.250%, 07/15/22 313,470
97,000 6.750%, 10/01/17µ 95,303
820,000 Warner Chilcott Company, LLCµ* 7.750%, 09/15/18 832,300
6,475,550
Industrials (1.1%)
454,000 Abengoa, SA* 8.875%, 11/01/17 458,540
BE Aerospace, Inc.
416,000 8.500%, 07/01/18µ 460,200
31,000 6.875%, 10/01/20 33,480
Belden, Inc.
393,000 7.000%, 03/15/17µ 404,790
93,000 9.250%, 06/15/19 103,579
361,000 Boart Longyear Management Pty., Ltd.* 7.000%, 04/01/21 372,732
236,000 Clean Harbors, Inc.* 7.625%, 08/15/16 251,931
Deluxe Corp.µ
509,000 7.000%, 03/15/19* 509,000
430,000 7.375%, 06/01/15 445,050
383,000 Dycom Investments, Inc. 7.125%, 01/15/21 392,575
218,000 Esterline Technologies Corp.µ 7.000%, 08/01/20 232,170
208,000 FTI Consulting, Inc. 6.750%, 10/01/20 213,200
GEO Group, Inc.
231,000 6.625%, 02/15/21* 232,155
69,000 7.750%, 10/15/17 74,175

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SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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PRINCIPAL — AMOUNT VALUE
366,000 GeoEye, Inc.µ 8.625%, 10/01/16 $ 393,450
131,000 Great Lakes Dredge & Dock Corp.µ* 7.375%, 02/01/19 131,000
148,000 H&E Equipment Services, Inc.µ 8.375%, 07/15/16 153,550
Huntington Ingalls Industries, Inc.*
23,000 6.875%, 03/15/18 23,805
22,000 7.125%, 03/15/21 22,825
399,000 Interline Brands, Inc.µ 7.000%, 11/15/18 409,972
324,000 Manitowoc Company, Inc. 8.500%, 11/01/20 353,970
231,000 Mobile Mini, Inc. 7.875%, 12/01/20 241,973
Oshkosh Corp.
278,000 8.500%, 03/01/20µ 303,715
185,000 8.250%, 03/01/17 200,725
463,000 Sensata Technologies Holding, B.V.µ* 6.500%, 05/15/19 469,945
717,000 Spirit AeroSystems Holdings, Inc.µ 7.500%, 10/01/17 767,190
226,000 SPX Corp.µ 7.625%, 12/15/14 251,990
694,000 Terex Corp. 8.000%, 11/15/17 710,482
Triumph Group, Inc.
231,000 8.625%, 07/15/18µ 254,678
190,000 8.000%,
11/15/17 ~ 204,250
455,000 Tutor Perini Corp. 7.625%, 11/01/18 440,212
321,000 WESCO Distribution, Inc.µ 7.500%, 10/15/17 330,630
9,847,939
Information Technology (0.9%)
Advanced Micro Devices, Inc.µ
555,000 7.750%, 08/01/20 586,912
450,000 8.125%, 12/15/17 480,375
Amkor Technology, Inc.
416,000 7.375%, 05/01/18 429,520
370,000 6.625%, 06/01/21* 366,300
130,000 Anixter International, Inc.µ 5.950%, 03/01/15 133,088
442,000 Audatex North America, Inc.* 6.750%, 06/15/18 456,365
601,000 EH Holding Corp.* 7.625%, 06/15/21 622,035
Equinix, Inc.
416,000 7.000%, 07/15/21 433,680
287,000 8.125%, 03/01/18µ 317,135
46,000 Fidelity National Information Services, Inc. 7.875%, 07/15/20 49,335
53,000 Hynix Semiconductor, Inc.* 7.875%, 06/27/17 56,509
740,000 iGATE Corp.µ* 9.000%, 05/01/16 743,700
Jabil Circuit, Inc.µ
509,000 8.250%, 03/15/18 586,622
93,000 7.750%, 07/15/16 104,625
231,000 Lexmark International, Inc.µ 6.650%, 06/01/18 257,630
662,000 MEMC Electronic Materials, Inc.* 7.750%, 04/01/19 635,520
509,000 Sanmina-SCI Corp.* 7.000%, 05/15/19 497,547
Seagate Technology*
324,000 6.875%, 05/01/20 326,430
278,000 7.000%, 11/01/21µ 282,170
301,000 ViaSat, Inc. 8.875%, 09/15/16 317,555
7,683,053
Materials (0.6%)
254,000 Allegheny Ludlum Corp. 6.950%, 12/15/25 289,465
139,000 Ball Corp. 7.375%, 09/01/19 153,595
166,000 Boise Cascade Holdings, LLC 7.125%, 10/15/14 165,585
450,000 Clearwater Paper Corp. 7.125%, 11/01/18 471,937
593,000 Greif, Inc.µ 7.750%, 08/01/19 650,817
86,000 Kraton Polymers, LLC 6.750%, 03/01/19 87,613
256,000 Nalco Holding Company 8.250%, 05/15/17 289,280
262,000 Neenah Paper, Inc. 7.375%, 11/15/14 268,550
555,000 Sealed Air Corp.µ* 6.875%, 07/15/33 503,466
339,000 Silgan Holdings, Inc.µ 7.250%, 08/15/16 363,577
Steel Dynamics, Inc.
744,000 7.750%, 04/15/16µ 790,500
93,000 7.625%, 03/15/20 100,208
Union Carbide Corp.µ
370,000 7.500%, 06/01/25 431,998
287,000 7.875%, 04/01/23 338,660
4,905,251
Telecommunication Services (0.5%)
436,000 CenturyLink, Inc.µ 6.875%, 01/15/28 422,768
Frontier Communications Corp.
564,000 9.000%, 08/15/31µ 585,855
231,000 8.250%, 04/15/17 254,678
836,000 MetroPCS Wireless, Inc.µ 7.875%, 09/01/18 893,475

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SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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PRINCIPAL — AMOUNT VALUE
555,000 Qwest Communications International, Inc.µ 7.750%, 02/15/31 $ 571,650
Windstream Corp.
814,000 7.750%, 10/15/20µ 866,910
278,000 7.500%, 04/01/23 283,907
3,879,243
Utilities (0.1%)
Calpine Corp.*
347,000 7.875%, 07/31/20 367,820
301,000 7.500%, 02/15/21µ 313,040
NRG Energy, Inc.*
463,000 7.875%, 05/15/21 467,630
93,000 7.625%, 05/15/19 93,233
1,241,723
TOTAL CORPORATE BONDS 63,412,483
U.S. Government and Agency
Securities (0.1%)
United States Treasury
Note ~
370,000 1.000%, 03/31/12 371,893
167,000 0.875%, 01/31/12 167,574
TOTAL U.S. GOVERNMENT AND AGENCY SECURITIES 539,467
Sovereign Bonds
(0.1%)
Federal Republic of Brazil
132,000 BRL 10.000%, 01/01/12 848,895
56,000 BRL 10.000%, 01/01/13 351,643
TOTAL SOVEREIGN BONDS 1,200,538
NUMBER OF
CONTRACTS VALUE
Purchased Options
(1.3%)#
Consumer Discretionary (0.3%)
260 Amazon.com, Inc. Call, 01/19/13, Strike $180.00 1,656,200
115 Priceline.com, Inc. Call, 01/19/13, Strike $520.00 1,269,025
2,925,225
Health Care (0.1%)
1,400 Agilent Technologies, Inc. Call, 01/19/13, Strike $50.00 665,000
Information Technology (0.9%)
275 Apple, Inc. Call, 01/19/13, Strike $395.00 1,658,250
1,500 Check Point Software Technologies, Ltd. Call, 01/19/13, Strike $55.00 1,410,000
3,000 Dell, Inc. Call, 01/19/13, Strike $15.00 1,020,000
2,650 EMC Corp. Call, 01/19/13, Strike $25.00 1,119,625
2,400 Oracle Corp. Call, 01/19/13, Strike $30.00 1,206,000
1,900 QUALCOMM, Inc. Call, 01/19/13, Strike $55.00 1,491,500
7,905,375
TOTAL PURCHASED OPTIONS 11,495,600
TOTAL SYNTHETIC CONVERTIBLE SECURITIES (Cost $73,950,685) 76,648,088
NUMBER OF
SHARES VALUE
CONVERTIBLE PREFERRED STOCKS
(12.1%)
Consumer Staples (1.9%)
76,000 Bunge, Ltd. 4.875% 7,647,500
680,000 Dole Food Automatic Exchµ* 7.000% 8,840,000
16,487,500
Energy (1.4%)
180,000 Apache Corp.µ 6.000% 11,725,200
Financials (5.2%)
350,000 Affiliated Managers Group, Inc. 5.150% 15,006,250
15,361 Bank of America Corp.µ 7.250% 14,972,828
64,000 MetLife, Inc.µ 5.000% 4,988,160
9,100 Wells Fargo & Companyµ 7.500% 9,661,470
44,628,708
Industrials (0.5%)
38,966 Stanley Black & Decker, Inc. 4.750% 4,461,607
Materials (2.0%)
177,800 Vale, SAµ 6.750% 16,538,466
Utilities (1.1%)
190,000 NextEra Energy, Inc. 7.000% 9,690,000
TOTAL CONVERTIBLE PREFERRED STOCKS (Cost $95,071,009) 103,531,481
NUMBER OF
UNITS VALUE
STRUCTURED EQUITY-LINKED
SECURITIES (3.1%)+*
Energy (1.3%)
76,800 Credit Suisse Group (Baker Hughes, Inc.) 8.000%, 01/31/12 5,499,648

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SCHEDULE OF INVESTMENTS JULY 31, 2011 (UNAUDITED)

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NUMBER OF — UNITS VALUE
173,000 Deutsche Bank, AG (Chesapeake Energy Corp.) 8.000%, 01/24/12 $ 5,705,540
11,205,188
Health Care (0.6%)
57,000 Deutsche Bank, AG (Biogen) 8.000%, 12/13/11 5,478,270
Information Technology (1.2%)
197,000 Barclays Capital, Inc. (EMC Corp.) 8.000%, 12/23/11 5,240,200
127,900 Credit Suisse Group (Autodesk, Inc.) 8.000%, 01/31/12 4,875,548
10,115,748
TOTAL STRUCTURED EQUITY-LINKED SECURITIES (Cost $27,451,844) 26,799,206
NUMBER OF
SHARES VALUE
COMMON STOCKS (1.5%)
Financials (0.1%)
13,850 American International Group, Inc.# 397,495
Health Care (1.4%)
354,765 Merck & Company, Inc.µ 12,108,129
TOTAL COMMON STOCKS (Cost $14,444,400) 12,505,624
SHORT TERM INVESTMENT
(5.1%)
43,408,753 Fidelity Prime Money Market Fund - Institutional Class (Cost $43,408,753) 43,408,753
TOTAL INVESTMENTS (127.5%) (Cost $1,047,192,541) 1,091,271,227
LIABILITIES, LESS OTHER ASSETS (-27.5%) (235,267,435 )
NET ASSETS APPLICABLE TO COMMON
SHAREHOLDERS (100.0%) $ 856,003,792

NOTES TO SCHEDULE OF INVESTMENTS

| µ | Security, or portion of security,
is held in a segregated account as collateral for note payable
aggregating a total value of $633,428,548. $211,981,693 of the
collateral has been re-registered by the counterparty. |
| --- | --- |
| * | Securities issued and sold pursuant
to a Rule 144A transaction are excepted from the
registration requirement of the Securities Act of 1933, as
amended. These securities may only be sold to qualified
institutional buyers (“QIBs”), such as the fund. Any
resale of these securities must generally be effected through a
sale that is registered under the Act or otherwise exempted from
such registration requirements. At July 31, 2011, the value
of 144A securities that could not be exchanged to the registered
form is $122,632,958 or 14.3% of net assets applicable to common
shareholders. |
| ‡ | Variable rate or step bond
security. The rate shown is the rate in effect at July 31,
2011. |
| ~ | Security, or portion of security,
is segregated as collateral (or potential collateral for future
transactions) for written options and swaps. The aggregate value
of such securities is $5,857,271. |
| § | Securities exchangeable or
convertible into securities of one or more entities that are
different than the issuer. Each entity is identified in the
parenthetical. |
| # | Non-income producing security. |
| + | Structured equity-linked securities
are designed to simulate the characteristics of the equity
security in the parenthetical. |

FOREIGN CURRENCY ABBREVIATIONS

BRL Brazilian Real
GBP British Pound Sterling
NOK Norwegian Krone

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

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Calamos Convertible Opportunities and Income Fund

INTEREST RATE SWAPS

Fixed Rate Floating Rate Termination Notional Unrealized — Appreciation/
Counterparty (Fund
Pays) (Fund
Receives) Date Amount (Depreciation)
BNP Paribas, SA 2.4300% quarterly 3 month Libor 04/14/14 $ 80,000,000 $ (3,765,902 )
BNP Paribas, SA 1.8650% quarterly 3 month Libor 04/14/12 55,000,000 (630,923 )
BNP Paribas, SA 1.8525% quarterly 3 month Libor 09/14/12 38,700,000 (700,796 )
$ (5,097,621 )

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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 (the “1940 Act”) as a diversified, closed-end management investment company. The Fund commenced operations on June 26, 2002. The Fund’s investment objective is to provide total return through a combination of capital appreciation and current income. Under normal circumstances, the Fund will invest at least 80% of its managed assets in a diversified portfolio of convertibles and non-convertible income securities. “Managed assets” means the Fund’s total assets (including any assets attributable to any leverage that may be outstanding) minus total liabilities (other than debt representing financial leverage).

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

Fund securities that are traded on U.S. securities exchanges, except option securities, are valued at the last current reported sales price at the time a Fund determines its net asset value (“NAV”). Securities traded in the over-the-counter market and quoted on The NASDAQ Stock Market are valued at the NASDAQ Official Closing Price, as determined by NASDAQ, or lacking a NASDAQ Official Closing Price, the last current reported sale price on NASDAQ at the time the Fund determines its NAV.

When a last sale or closing price is not available, equity securities, other than option securities, that are traded on a U.S. securities exchange and other equity securities traded in the over-the-counter market are valued at the mean between the most recent bid and asked quotations in accordance with guidelines adopted by the board of trustees. Each option security traded on a U.S. securities exchange is valued at the mid-point of the consolidated bid/ask quote for the option security, also in accordance with guidelines adopted by the board of trustees. Each over-the-counter option that is not traded through the Options Clearing Corporation is valued based on a quotation provided by the counterparty to such option under the ultimate supervision of the board of trustees.

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

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

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

The Fund also may use fair value pricing, pursuant to guidelines adopted by the board of trustees and under the ultimate supervision of the board of trustees, if trading in the security is halted or if the value of a security it holds is materially affected by events occurring before the Fund’s pricing time but after the close of the primary market or exchange on which the security is listed. Those procedures may utilize valuations furnished by pricing services approved by the board of trustees, which may be based on market transactions for

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comparable securities and various relationships between securities that are generally recognized by institutional traders, a computerized matrix system, or appraisals derived from information concerning the securities or similar securities received from recognized dealers in those securities.

When fair value pricing of securities is employed, the prices of securities used by a Fund to calculate its NAV may differ from market quotations or official closing prices. In light of the judgment involved in fair valuations, there can be no assurance that a fair value assigned to a particular security is accurate.

Investment Transactions. Investment transactions are recorded on a trade date basis as of July 31, 2011.

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

Option Transactions. For hedging and investment purposes, the Fund may purchase or write (sell) put and call options. One of the risks associated with purchasing an option is that the Fund pays a premium whether or not the option is exercised. Additionally, the Fund bears the risk of loss of premium and change in value should the counterparty not perform under the contract. The Fund as writer of an option bears the market risk of an unfavorable change in the price of the security underlying the written option.

Forward Foreign Currency Contracts. The Fund may engage in portfolio hedging with respect to changes in currency exchange rates by entering into forward foreign currency contracts to purchase or sell currencies. A forward foreign currency contract is a commitment to purchase or sell a foreign currency at a future date at a negotiated forward rate. Risks associated with such contracts include, among other things, movement in the value of the foreign currency relative to the U.S. dollar and the ability of the counterparty to perform. The net unrealized gain, if any, represents the credit risk to a Fund on a forward foreign currency contract. The contracts are valued daily at forward foreign exchange rates. There were no open forward foreign currency contracts at July 31, 2011.

NOTE 2 – INVESTMENTS

The following information is presented on a federal income tax basis as of July 31, 2011. Differences between the cost basis under U.S. generally accepted accounting principles and federal income tax purposes are primarily due to temporary differences.

The cost basis of investments for federal income tax purposes at July 31, 2011 was as follows:

Cost basis of investments $
Gross unrealized appreciation 51,654,557
Gross unrealized depreciation (33,459,213 )
Net unrealized appreciation (depreciation) $ 18,195,344

NOTE 3 – BORROWINGS

The Fund, with the approval of its board of trustees, including its independent trustees, has entered into a financing package that includes a Committed Facility Agreement (the “Agreement”) with BNP Paribas Prime Brokerage, Inc. (as successor to Bank of America N.A.) (“BNP”) that allows the Fund to borrow up to $300,000,000, and a Lending Agreement, as defined below. Borrowings under the Agreement are secured by assets of the Fund that are held with the Fund’s custodian in a separate account (the “pledged collateral”). Interest is charged at the quarterly LIBOR (London Inter-bank Offered Rate) plus .65% on the amount borrowed and .55% on the undrawn balance. For the period ended July 31, 2011, the average borrowings and the average interest rate were $219,901,099 and 1.08%, respectively. As of July 31, 2011, the amount of such outstanding borrowings was $245,000,000. The interest rate applicable to the borrowings on July 31, 2011 was 0.90%.

The Lending Agreement is a separate side-agreement between the Fund and BNP pursuant to which BNP may borrow a portion of the pledged collateral (the “Lent Securities”) in an amount not to exceed the outstanding borrowings owed by the Fund to BNP under the Agreement. The Lending Agreement is intended to permit the Fund to significantly reduce the cost of its borrowings under the Agreement. BNP may re-register the Lent

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Securities in its own name or in another name other than the Fund, and may pledge, re-pledge, sell, lend or otherwise transfer or use the Lent Securities with all attendant rights of ownership. (It is the Fund’s understanding that BNP will perform due diligence to determine the creditworthiness of any party that borrows Lent Securities from BNP.) The Fund may designate any security within the pledged collateral as ineligible to be a Lent Security, provided there are eligible securities within the pledged collateral in an amount equal to the outstanding borrowing owed by the Fund. During the period in which the Lent Securities are outstanding, BNP must remit payment to the Fund equal to the amount of all dividends, interest or other distributions earned or made by the Lent Securities.

Under the terms of the Lending Agreement, the Lent Securities are marked to market daily, and if the value of the Lent Securities exceeds the value of the then-outstanding borrowings owed by the Fund to BNP under the Agreement (the “Current Borrowings”), BNP must, on that day, either (1) return Lent Securities to the Fund’s custodian in an amount sufficient to cause the value of the outstanding Lent Securities to equal the Current Borrowings; or (2) post cash collateral with the Fund’s custodian equal to the difference between the value of the Lent Securities and the value of the Current Borrowings. If BNP fails to perform either of these actions as required, the Fund will recall securities, as discussed below, in an amount sufficient to cause the value of the outstanding Lent Securities to equal the Current Borrowings. The Fund can recall any of the Lent Securities and BNP shall, to the extent commercially possible, return such security or equivalent security to the Fund’s custodian no later than three business days after such request. If the Fund recalls a Lent Security pursuant to the Lending Agreement, and BNP fails to return the Lent Securities or equivalent securities in a timely fashion, BNP shall remain liable to the Fund’s custodian for the ultimate delivery of such Lent Securities, or equivalent securities, and for any buy-in costs that the executing broker for the sales transaction may impose with respect to the failure to deliver. The Fund shall also have the right to apply and set-off an amount equal to one hundred percent (100%) of the then-current fair market value of such Lent Securities against the Current Borrowings.

NOTE 4 – INTEREST RATE SWAPS

The Fund engages in interest rate swaps primarily to hedge the interest rate risk on the Fund’s borrowings (see Note 3 – Borrowings). An interest rate swap is a contract that involves the exchange of one type of interest rate for another type of interest rate. If interest rates rise, resulting in a diminution in the value of the Fund’s portfolio, the Fund would receive payments under the swap that would offset, in whole or in part, such diminution in value; if interest rates fall, the Fund would likely lose money on the swap transaction. Swap agreements are stated at fair value. Notional principal amounts are used to express the extent of involvement in these transactions, but the amounts potentially subject to credit risk are much smaller. In connection with these contracts, securities may be identified as collateral in accordance with the terms of the respective swap contracts in the event of default or bankruptcy of the Fund.

NOTE 5 – SYNTHETIC CONVERTIBLE SECURITIES

The Fund may establish a “synthetic” convertible instrument by combining separate securities that possess the economic characteristics similar to a convertible security, i.e., fixed-income securities (“fixed-income component”), which may be a convertible or non-convertible security and the right to acquire equity securities (“convertible component”). The fixed-income component is achieved by investing in fixed income securities such as bonds, preferred stocks, and money market instruments. The convertible component is achieved by investing in warrants or purchased options to buy common stock at a certain exercise price, or options on a stock index. In establishing a synthetic instrument, the Fund may pool a basket of fixed-income securities and a basket of warrants or purchased options that produce the economic characteristics similar to a convertible security. Within each basket of fixed-income securities and warrants or options, different companies may issue the fixed-income and convertible components, which may be purchased separately and at different times.

The Fund may also purchase synthetic securities created by other parties, typically investment banks, including convertible structured notes. Convertible structured notes are fixed-income debentures linked to equity. Convertible structured notes have the attributes of a convertible security; however, the investment bank that issued the convertible note assumes the credit risk associated with the investment, rather than the issuer of the underlying common stock into which the note is convertible. Purchasing synthetic convertible securities may offer more flexibility than purchasing a convertible security.

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NOTE 6 – STRUCTURED EQUITY-LINKED SECURITIES

The Fund may also invest in structured equity-linked securities created by third parties, typically investment banks. Structured equity-linked securities created by such parties may be designed to simulate the characteristics of traditional convertible securities or may be designed to alter or emphasize a particular feature. Traditional convertible securities typically offer stable cash flows with the ability to participate in capital appreciation of the underlying common stock. Because traditional convertible securities are exercisable at the option of the holder, the holder is protected against downside risk. Structured equity-linked securities may alter these characteristics by offering enhanced yields in exchange for reduced capital appreciation or less downside protection, or any combination of these features. Structured equity-linked instruments may include structured notes, equity-linked notes, mandatory convertibles and combinations of securities and instruments, such as a debt instrument combined with a forward foreign currency contract.

NOTE 7 – FAIR VALUE MEASUREMENTS

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

| • | Level 1 – Prices are determined using inputs
from unadjusted quoted prices from active markets (including
securities actively traded on a securities exchange) for
identical assets. |
| --- | --- |
| • | Level 2 – Prices are determined using
significant observable market inputs other than unadjusted
quoted prices, including quoted prices of similar securities,
fair value adjustments to quoted foreign securities, interest
rates, credit risk, prepayment speeds, and other relevant data. |
| • | Level 3 – Prices reflect unobservable market
inputs (including the Fund’s own judgments about
assumptions market participants would use in determining fair
value) when observable inputs are unavailable. |

Debt securities are valued based upon evaluated prices received from an independent pricing service or from a dealer or broker who makes markets in such securities. Pricing services utilize various observable market data and as such, debt securities are generally categorized as Level 2. The levels are not necessarily an indication of the risk or liquidity of the Funds’ investments. Transfers between the levels for investment securities or other financial instruments are measured at the end of the reporting period and no significant transfers between levels occurred during the period.

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

Convertible Opportunities and Income Fund — Level 1 Level 2 Level 3 Total
Assets:
Corporate Bonds $ — $ 622,007,106 $ — $ 622,007,106
Convertible Bonds 189,320,351 $ 189,320,351
U.S. Government and Agency Securities 5,287,185 $ 5,287,185
Sovereign Bonds 11,763,433 $ 11,763,433
Synthetic Convertible Securities (Corporate Bonds) 63,412,483 $ 63,412,483
Synthetic Convertible Securities (U.S. Government and Agency
Securities) 539,467 $ 539,467
Synthetic Convertible Securities (Sovereign Bonds) 1,200,538 $ 1,200,538
Synthetic Convertible Securities (Purchased Options) 11,495,600 $ 11,495,600
Convertible Preferred Stocks 72,037,731 31,493,750 103,531,481
Structured Equity-Linked Securities 26,799,206 $ 26,799,206
Common Stocks 12,505,624 $ 12,505,624
Short Term Investment 43,408,753 $ 43,408,753
Total $ 139,447,708 $ 951,823,519 $ — $ 1,091,271,227
Liabilities:
Interest Rate Swaps 5,097,621 $ 5,097,621
Total $ — $ 5,097,621 $ — $ 5,097,621

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TOC /TOC link2 "ITEM 2. CONTROLS AND PROCEDURES"

ITEM 2. 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-Q 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 quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

link2 "ITEM 3. EXHIBITS"

ITEM 3. EXHIBITS.

(a) Certification of Principal Executive Officer.
(b) Certification of Principal Financial Officer.

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link1 "SIGNATURES"

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: Name: /s/ John P. Calamos, Sr. John P. Calamos, Sr.
Title: Principal Executive Officer
Date: September 19, 2011

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: Name: /s/ John P. Calamos, Sr. John P. Calamos, Sr.
Title: Principal Executive Officer
Date: September 19, 2011
By: Name: /s/ Nimish S. Bhatt Nimish S. Bhatt
Title: Principal Financial Officer
Date: September 19, 2011

Folio /Folio

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