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: 811-21319 EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER: Calamos Convertible and High Income Fund ADDRESS OF PRINCIPAL EXECUTIVE OFFICES: 2020 Calamos Court, Naperville Illinois 60563 NAME AND ADDRESS OF AGENT FOR SERVICE: James S. Hamman, Jr., Secretary, 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, 2006 DATE OF REPORTING PERIOD: July 31, 2006 CALAMOS CONVERTIBLE AND HIGH INCOME FUND ITEM 1. SCHEDULE OF INVESTMENTS July 31, 2006 (UNAUDITED) CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PRINCIPAL AMOUNT VALUE ----------- ------------ CORPORATE BONDS (83.5%) CONSUMER DISCRETIONARY (21.2%) $ 2,853,000 Asbury Automotive Group, Inc. 9.000%, 06/15/12 $ 2,888,663 Beazer Homes USA, Inc. 9,510,000 8.375%, 04/15/12 9,367,350 6,657,000 8.125%, 06/15/16*@ 6,357,435 4,755,000 Broder Bros. Co. 11.250%, 10/15/10 4,445,925 4,755,000 DEX Media, Inc. 8.000%, 11/15/13 4,778,775 4,755,000 DIRECTV Financing Company, Inc. 8.375%, 03/15/13 5,004,637 5,991,000 EchoStar Communications Corp.* 7.125%, 02/01/16 5,916,112 1,783,000 EchoStar DBS Corporation 6.625%, 10/01/14 1,725,053 11,517,000 GBP EMI Group, PLC 9.750%, 05/20/08 23,019,715 6,443,000 GameStop Corp.@ 8.000%, 10/01/12 6,571,860 3,804,000 General Motors Acceptance Corporation 6.875%, 09/15/11 3,687,282 4,565,000 General Motors Corp.@ 7.125%, 07/15/13 3,903,075 Goodyear Tire & Rubber Company 6,657,000 7.857%, 08/15/11@ 6,191,010 4,755,000 7.000%, 03/15/28 3,792,113 3,328,000 Group 1 Automotive, Inc. 8.250%, 08/15/13 3,369,600 8,844,000 Hasbro, Inc. 6.600%, 07/15/28 8,492,778 Hovnanian Enterprises, Inc. 7,608,000 8.625%, 01/15/17@ 7,455,840 903,000 7.750%, 05/15/13 814,958 3,804,000 IMAX Corp.@ 9.625%, 12/01/10 3,994,200 4,755,000 Interpublic Group of Companies, Inc. 7.250%, 08/15/11 4,338,937 4,755,000 Intrawest Corp. 7.500%, 10/15/13 4,760,944 J.C. Penney Company, Inc. 1,902,000 9.000%, 08/01/12 2,197,637 1,426,000 7.650%, 08/15/16@ 1,568,081 4,279,000 Jarden Corp.@ 9.750%, 05/01/12 4,471,555 3,053,000 Kellwood Company 7.625%, 10/15/17 2,803,466 4,755,000 Landry's Restaurants, Inc. 7.500%, 12/15/14 4,434,037 6,657,000 Linens 'n Things, Inc.*@++ 11.132%, 01/15/14 6,207,652 3,732,000 Mandalay Resort Group@ 7.625%, 07/15/13 3,694,680 PRINCIPAL AMOUNT VALUE ----------- ------------ $ 1,426,000 NCL Holding, ASA 10.625%, 07/15/14 $ 1,397,480 11,248,000 Oxford Industries, Inc. 8.875%, 06/01/11 11,360,480 903,000 Phillips-Van Heusen Corp.@ 8.125%, 05/01/13 930,090 951,000 Pinnacle Entertainment, Inc. 8.250%, 03/15/12 953,378 2,853,000 Rent-A-Center, Inc. 7.500%, 05/01/10 2,831,603 3,566,000 CAD Rogers Cable, Inc. 7.250%, 12/15/11 3,263,125 4,279,000 CAD Rogers Wireless, Inc. 7.625%, 12/15/11 3,979,542 11,316,000 Royal Caribbean Cruises, Ltd.@ 7.500%, 10/15/27 10,930,928 856,000 Station Casinos, Inc. 6.875%, 03/01/16 791,800 8,178,000 Vail Resorts, Inc. 6.750%, 02/15/14 7,809,990 6,657,000 Warnaco Group, Inc.@ 8.875%, 06/15/13 6,831,746 Warner Music Group 1,902,000 GBP 8.125%, 04/15/14 3,659,523 1,902,000 7.375%, 04/15/14@ 1,844,940 WCI Communities, Inc.@ 6,181,000 7.875%, 10/01/13 5,346,565 2,853,000 6.625%, 03/15/15 2,296,665 475,000 William Lyon Homes, Inc. 10.750%, 04/01/13 439,375 856,000 Wynn Las Vegas, LLC@ 6.625%, 12/01/14 811,060 ------------ 211,731,660 ------------ CONSUMER STAPLES (6.9%) 1,902,000 Central Garden & Pet Company 9.125%, 02/01/13 1,963,815 5,230,000 Chattem, Inc. 7.000%, 03/01/14 5,060,025 4,279,000 Chiquita Brands International, Inc.@ 7.500%, 11/01/14 3,658,545 5,378,000 Del Monte Foods Company 8.625%, 12/15/12 5,606,565 Dole Food Company, Inc. 5,509,000 8.875%, 03/15/11@ 5,178,460 4,241,000 8.625%, 05/01/09 4,071,360 2,148,000 Gold Kist, Inc. 10.250%, 03/15/14 2,266,140 12,838,000 Jean Coutu Group, Inc.@ 8.500%, 08/01/14 12,051,672 4,279,000 NBTY, Inc. 7.125%, 10/01/15 4,043,655 3,804,000 Pinnacle Foods Holding@ 8.250%, 12/01/13 3,746,940 6,086,000 Playtex Products, Inc. 8.000%, 03/01/11 6,337,047 6,181,000 Reynolds American, Inc.* 7.300%, 07/15/15 6,215,954 See accompanying Notes to Schedule of Investments 1 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PRINCIPAL AMOUNT VALUE ----------- ------------ $ 1,902,000 Smithfield Foods, Inc.@ 7.750%, 05/15/13 $ 1,906,755 4,897,000 Spectrum Brands, Inc.@ 8.500%, 10/01/13 3,929,843 2,901,000 WH Intermediate Holdings, Ltd. 9.500%, 04/01/11 3,187,474 ------------ 69,224,250 ------------ ENERGY (10.1%) 8,559,000 Arch Western Finance, LLC 6.750%, 07/01/13 8,195,242 Chesapeake Energy Corp. 3,804,000 6.875%, 01/15/16 3,689,880 1,902,000 7.750%, 01/15/15 1,925,775 3,756,000 Comstock Resources, Inc. 6.875%, 03/01/12 3,549,420 856,000 Energy Partners, Ltd. 8.750%, 08/01/10 836,740 4,755,000 Forest Oil Corp. 8.000%, 12/15/11 4,909,538 Giant Industries, Inc. 5,706,000 8.000%, 05/15/14 5,706,000 1,902,000 11.000%, 05/15/12 2,063,670 10,793,000 Houston Exploration Company 7.000%, 06/15/13 10,631,105 6,562,000 KCS Energy, Inc. 7.125%, 04/01/12 6,299,520 4,398,000 Paramount Resources, Ltd. 8.500%, 01/31/13 4,557,428 Petroleo Brasileiro, SA 7,132,000 8.375%, 12/10/18 8,085,905 4,755,000 9.125%, 07/02/13 5,515,800 16,642,000 Premcor Refining Group, Inc. 7.500%, 06/15/15 17,311,391 1,902,000 Superior Energy Services, Inc.* 6.875%, 06/01/14 1,854,450 2,853,000 Swift Energy Company 7.625%, 07/15/11 2,867,265 6,181,000 Whiting Petroleum Corp. 7.250%, 05/01/12 6,165,548 6,609,000 Williams Companies, Inc.@ 7.750%, 06/15/31 6,526,387 ------------ 100,691,064 ------------ FINANCIALS (4.8%) E*TRADE Financial Corporation 7,227,000 7.375%, 09/15/13 7,281,202 5,492,000 7.875%, 12/01/15 5,697,950 1,331,000 8.000%, 06/15/11 1,374,258 Host Marriott Corp. 10,460,000 7.125%, 11/01/13@ 10,525,375 1,997,000 9.250%, 10/01/07 2,071,887 11,673,000 Leucadia National Corp. 7.000%, 08/15/13 11,497,905 903,000 Omega Healthcare Investors, Inc. 7.000%, 04/01/14 873,653 Senior Housing Properties Trust 4,755,000 8.625%, 01/15/12 5,016,525 PRINCIPAL AMOUNT VALUE ----------- ------------ $ 3,360,000 7.875%, 04/15/15 $ 3,410,400 ------------ 47,749,155 ------------ HEALTH CARE (6.5%) 15,477,000 Ameripath, Inc.@ 10.500%, 04/01/13 16,366,927 4,755,000 Angiotech Pharmaceuticals, Inc.* 7.750%, 04/01/14 4,624,238 13,884,000 Bausch & Lomb, Inc. 7.125%, 08/01/28 14,274,626 1,902,000 Bio-Rad Laboratories, Inc. 7.500%, 08/15/13 1,921,020 2,140,000 Biovail Corp. 7.875%, 04/01/10 2,182,800 856,000 DaVita, Inc.@ 7.250%, 03/15/15 822,830 666,000 Omnicare, Inc.@ 6.875%, 12/15/15 646,020 4,137,000 Psychiatric Solutions, Inc. 7.750%, 07/15/15 4,033,575 9,605,000 Tenet Healthcare Corp.* 9.250%, 02/01/15 8,884,625 5,088,000 Valeant Pharmaceuticals International 7.000%, 12/15/11 4,859,040 6,657,000 Vanguard Health Systems, Inc. 9.000%, 10/01/14 6,473,933 ------------ 65,089,634 ------------ INDUSTRIALS (12.8%) 2,615,000 Accuride Corp. 8.500%, 02/01/15 2,445,025 5,706,000 American Airlines, Inc. 7.250%, 02/05/09 5,755,927 2,377,000 Armor Holdings, Inc.@ 8.250%, 08/15/13 2,495,850 2,853,000 BE Aerospace, Inc.@ 8.875%, 05/01/11 2,988,517 15,215,000 CNH Global, NV 9.250%, 08/01/11 16,108,881 1,426,000 Columbus McKinnon Corp. 8.875%, 11/01/13 1,461,650 15,691,000 Esterline Technologies Corp.@ 7.750%, 06/15/13 15,926,365 951,000 FTI Consulting, Inc. 7.625%, 06/15/13 965,265 3,328,000 Gardner Denver, Inc. 8.000%, 05/01/13 3,494,400 1,426,000 GATX Corp. 8.875%, 06/01/09 1,530,780 5,582,000 General Cable Corp. 9.500%, 11/15/10 5,972,740 3,328,000 Greenbrier Companies, Inc. 8.375%, 05/15/15 3,398,720 1,778,000 H&E Equipment Service, Inc.*Y 5.375%, 07/15/16 1,798,003 637,000 Hexcel Corporation 6.750%, 02/01/15 613,113 5,611,000 Interline Brands, Inc. 8.125%, 06/15/14 5,681,137 See accompanying Notes to Schedule of Investments 2 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PRINCIPAL AMOUNT VALUE ----------- ------------ JLG Industries, Inc. $ 7,227,000 8.250%, 05/01/08 $ 7,624,485 3,328,000 8.375%, 06/15/12@ 3,544,320 4,133,000 Manitowoc Company, Inc. 10.500%, 08/01/12 4,484,305 8,033,000 Mobile Mini, Inc. 9.500%, 07/01/13 8,635,475 4,755,000 Monitronics International, Inc.@ 11.750%, 09/01/10 4,701,506 4,897,000 Orbital Sciences Corp. 9.000%, 07/15/11 5,190,820 Sequa Corp. 6,657,000 8.875%, 04/01/08 6,964,886 1,902,000 9.000%, 08/01/09 2,011,365 Terex Corp. 2,615,000 9.250%, 07/15/11 2,784,975 1,802,000 7.375%, 01/15/14 1,797,495 2,140,000 Trinity Industries, Inc. 6.500%, 03/15/14 2,086,500 1,902,000 Wesco Distribution, Inc. 7.500%, 10/15/17 1,897,245 3,804,000 Westinghouse Air Brake Technologies Corporation 6.875%, 07/31/13 3,765,960 2,377,000 Williams Scotsman International, Inc. 8.500%, 10/01/15 2,394,828 ------------ 128,520,538 ------------ INFORMATION TECHNOLOGY (6.7%) 6,442,000 Advanced Micro Devices, Inc. 7.750%, 11/01/12 6,482,263 856,000 Anixter International, Inc. 5.950%, 03/01/15 793,940 2,606,000 Arrow Electronics, Inc. 6.875%, 06/01/18 2,593,176 856,000 Avago Technologies*@ 11.875%, 12/01/15 928,760 Celestica, Inc.@ 8,083,000 7.625%, 07/01/13 7,921,340 3,804,000 7.875%, 07/01/11 3,784,980 1,902,000 Flextronics International, Ltd.@ 6.500%, 05/15/13 1,854,450 4,755,000 Freescale Semiconductor, Inc. 7.125%, 07/15/14 4,873,875 1,902,000 GBP Iron Mountain, Inc.* 7.250%, 04/15/14 3,464,112 404,000 Sanmina-SCI Corporation@ 8.125%, 03/01/16 395,920 9,034,000 SunGuard Data Systems, Inc.@ 9.125%, 08/15/13 9,271,142 5,782,000 Telcordia Technologies* 10.000%, 03/15/13 4,654,510 19,495,000 Xerox Corp. 7.625%, 06/15/13 19,787,425 ------------ 66,805,893 ------------ PRINCIPAL AMOUNT VALUE ----------- ------------ MATERIALS (9.5%) $ 1,189,000 Agrium, Inc. 7.125%, 05/23/36 $ 1,206,578 Aleris International, Inc. 4,945,000 10.375%, 10/15/10 5,427,137 3,668,000 9.000%, 11/15/14 4,144,840 4,755,000 Ball Corp.@ 6.875%, 12/15/12 4,755,000 951,000 Crown Americas, LLC.*@ 7.750%, 11/15/15 942,679 18,087,000 Equistar Chemicals, LP 10.625%, 05/01/11 19,533,960 12,220,000 Freeport-McMoRan Copper & Gold, Inc. 10.125%, 02/01/10 13,075,400 856,000 Gibraltar Industries, Inc.* 8.000%, 12/01/15 856,000 Ineos Group Holdings, PLC* 5,706,000 EUR 7.875%, 02/15/16 6,833,293 951,000 8.500%, 02/15/16@ 896,318 5,706,000 IPSCO, Inc. 8.750%, 06/01/13 6,119,685 8,559,000 Neenah Paper, Inc.@ 7.375%, 11/15/14 8,002,665 2,377,000 P.H. Glatfelter Company* 7.125%, 05/01/16 2,329,460 2,853,000 Polyone Corp.@ 10.625%, 05/15/10 3,081,240 4,755,000 Sealed Air Corp.* 6.875%, 07/15/33 4,635,393 1,902,000 Texas Industries, Inc. 7.250%, 07/15/13 1,913,887 Union Carbide Corp. 4,612,000 7.875%, 04/01/23 4,952,273 3,091,000 7.500%, 06/01/25 3,200,783 3,519,000 Westlake Chemical Corporation 6.625%, 01/15/16 3,290,265 ------------ 95,196,856 ------------ TELECOMMUNICATION SERVICES (2.1%) 5,706,000 AT&T Corp. 8.000%, 11/15/31 6,677,144 666,000 Citizens Communications Company 9.000%, 08/15/31 685,980 6,657,000 Sprint Nextel Corporation 7.375%, 08/01/15 6,826,940 2,615,000 Stratos Global Corp.*@ 9.875%, 02/15/13 2,190,063 4,279,000 Syniverse Technologies, Inc. 7.750%, 08/15/13 4,182,722 ------------ 20,562,849 ------------ UTILITIES (2.9%) 4,755,000 Centerpoint Energy, Inc.@ 6.850%, 06/01/15 4,928,163 951,000 NRG Energy, Inc. 7.375%, 02/01/16 931,980 See accompanying Notes to Schedule of Investments 3 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PRINCIPAL AMOUNT VALUE ----------- ------------ $ 4,755,000 Public Service Enterprise Group, Inc. 8.625%, 02/15/08 $ 4,915,481 11,982,000 Teco Energy, Inc. 7.500%, 06/15/10 12,401,370 6,657,000 TXU Corp. 6.500%, 11/15/24 6,057,158 ------------ 29,234,152 ------------ TOTAL CORPORATE BONDS (Cost $834,236,977) 834,806,051 ------------ CONVERTIBLE BONDS (21.3%) CONSUMER DISCRETIONARY (4.3%) 6,500,000 Lamar Advertising Company 2.875%, 12/31/10 7,263,750 7,800,000 Liberty Media Corporation (Motorola, Inc.)[] 3.500%, 01/15/31 7,936,500 Liberty Media Corporation (Sprint Corporation PCS)[] 4,142,000 3.750%, 02/15/30 2,495,555 1,974,000 4.000%, 11/15/29 1,251,023 3,750,000 GBP Punch Taverns Redwood Jersey Co. Ltd. 5.000%, 12/14/10 7,479,854 United Auto Group, Inc. 3,960,000 3.500%, 04/01/26* 4,291,650 2,290,000 3.500%, 04/01/26@ 2,481,787 9,000,000 Walt Disney Company@ 2.125%, 04/15/23 10,001,250 ------------ 43,201,369 ------------ ENERGY (1.3%) 9,000,000 Cal Dive International, Inc.* 3.250%, 12/15/25 13,286,250 ------------ FINANCIALS (1.8%) 6,000,000 Deutsche Bank Luxembourg S.A. (USA Interactive)* ++[] 5.349%, 05/01/12 6,645,600 11,250,000 Travelers Property Casualty Corp. 4.500% 04/15/32 11,002,500 ------------ 17,648,100 ------------ HEALTH CARE (2.6%) 6,500,000 Advanced Medical Optics, Inc.* 3.250%, 08/01/26 6,914,375 10,500,000 Emdeon Corp.* 3.125%, 09/01/25 10,644,375 8,000,000 Wyeth++ 5.109%, 01/15/24 8,544,000 ------------ 26,102,750 ------------ INDUSTRIALS (4.2%) 8,000,000 Allied Waste Industries, Inc.@ 4.250%, 04/15/34 7,190,000 11,500,000 GATX Corp. 7.500%, 02/01/07 13,713,750 6,400,000 Lockheed Martin Corp.++ 4.920%, 08/15/33 7,697,920 PRINCIPAL AMOUNT VALUE ----------- ------------ $ 5,500,000 Quanta Services, Inc.* 3.750%, 04/30/26 $ 5,575,625 13,000,000 Roper Industries, Inc. ++ 1.481%, 01/15/34 7,767,500 ------------ 41,944,795 ------------ INFORMATION TECHNOLOGY (5.4%) 4,000,000 CSG Systems International, Inc. 2.500%, 06/15/24 4,410,000 5,500,000 DST Systems, Inc. 4.125%, 08/15/23 7,012,500 6,750,000 Electronic Data Systems Corp. 3.875%, 07/15/23 6,792,188 5,500,000 Euronet Worldwide, Inc. 3.500%, 10/15/25 5,376,250 6,000,000 LSI Logic Corp.@ 4.000%, 05/15/10 6,037,500 6,000,000 Mentor Graphics Corp.* 6.250%, 03/01/26 6,877,500 17,000,000 Vishay Intertechnology, Inc. 3.625%, 08/01/23 17,021,250 ------------ 53,527,188 ------------ UTILITIES (1.7%) 6,500,000 CenterPoint Energy, Inc.@ 3.750%, 05/15/23 7,938,125 3,500,000 GBP Scottish & Southern Energy, PLC 3.750%, 10/29/09 8,931,388 ------------ 16,869,513 ------------ TOTAL CONVERTIBLE BONDS (Cost $202,189,970) 212,579,965 ------------ SYNTHETIC CONVERTIBLE SECURITIES (5.0%) CORPORATE BONDS (4.3%) CONSUMER DISCRETIONARY (1.1%) 147,000 Asbury Automotive Group, Inc. 9.000%, 06/15/12 148,838 Beazer Homes USA, Inc. 490,000 8.375%, 04/15/12 482,650 343,000 8.125%, 06/15/16*@ 327,565 245,000 Broder Bros. Co. 11.250%, 10/15/10 229,075 245,000 DEX Media, Inc. 8.000%, 11/15/13 246,225 245,000 DIRECTV Financing Company, Inc. 8.375%, 03/15/13 257,862 309,000 EchoStar Communications Corp.* 7.125%, 02/01/16 305,137 92,000 EchoStar DBS Corporation 6.625%, 10/01/14 89,010 594,000 GBP EMI Group, PLC 9.750%, 05/20/08 1,187,263 332,000 GameStop Corp.@ 8.000%, 10/01/12 338,640 196,000 General Motors Acceptance Corporation 6.875%, 09/15/11 189,986 See accompanying Notes to Schedule of Investments 4 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PRINCIPAL AMOUNT VALUE ----------- ------------ $ 235,000 General Motors Corp.@ 7.125%, 07/15/13 $ 200,925 Goodyear Tire & Rubber Company 343,000 7.857%, 08/15/11@ 318,990 245,000 7.000%, 03/15/28 195,387 172,000 Group 1 Automotive, Inc. 8.250%, 08/15/13 174,150 456,000 Hasbro, Inc. 6.600%, 07/15/28 437,891 Hovnanian Enterprises, Inc. 392,000 8.625%, 01/15/17@ 384,160 47,000 7.750%, 05/15/13 42,418 196,000 IMAX Corp.@ 9.625%, 12/01/10 205,800 245,000 Interpublic Group of Companies, Inc. 7.250%, 08/15/11 223,562 245,000 Intrawest Corp. 7.500%, 10/15/13 245,306 J.C. Penney Company, Inc. 98,000 9.000%, 08/01/12 113,233 74,000 7.650%, 08/15/16@ 81,373 221,000 Jarden Corp.@ 9.750%, 05/01/12 230,945 157,000 Kellwood Company 7.625%, 10/15/17 144,168 245,000 Landry's Restaurants, Inc. 7.500%, 12/15/14 228,462 343,000 Linens 'n Things, Inc.*@++ 11.132%, 01/15/14 319,847 193,000 Mandalay Resort Group@ 7.625%, 07/15/13 191,070 74,000 NCL Holding, ASA 10.625%, 07/15/14 72,520 580,000 Oxford Industries, Inc. 8.875%, 06/01/11 585,800 47,000 Phillips-Van Heusen Corp.@ 8.125%, 05/01/13 48,410 49,000 Pinnacle Entertainment, Inc. 8.250%, 03/15/12 49,123 147,000 Rent-A-Center, Inc. 7.500%, 05/01/10 145,898 184,000 CAD Rogers Cable, Inc. 7.250%, 12/15/11 168,372 221,000 CAD Rogers Wireless, Inc. 7.625%, 12/15/11 205,534 584,000 Royal Caribbean Cruises, Ltd.@ 7.500%, 10/15/27 564,127 44,000 Station Casinos, Inc. 6.875%, 03/01/16 40,700 422,000 Vail Resorts, Inc. 6.750%, 02/15/14 403,010 343,000 Warnaco Group, Inc.@ 8.875%, 06/15/13 352,004 Warner Music Group 98,000 GBP 8.125%, 04/15/14 188,556 98,000 7.375%, 04/15/14@ 95,060 PRINCIPAL AMOUNT VALUE ----------- ------------ WCI Communities, Inc.@ $ 319,000 7.875%, 10/01/13 $ 275,935 147,000 6.625%, 03/15/15 118,335 25,000 William Lyon Homes, Inc. 10.750%, 04/01/13 23,125 44,000 Wynn Las Vegas, LLC@ 6.625%, 12/01/14 41,690 ------------ 10,918,137 ------------ CONSUMER STAPLES (0.4%) 98,000 Central Garden & Pet Company 9.125%, 02/01/13 101,185 270,000 Chattem, Inc. 7.000%, 03/01/14 261,225 221,000 Chiquita Brands International, Inc.@ 7.500%, 11/01/14 188,955 277,000 Del Monte Foods Company 8.625%, 12/15/12 288,772 Dole Food Company, Inc. 284,000 8.875%, 03/15/11@ 266,960 219,000 8.625%, 05/01/09 210,240 111,000 Gold Kist, Inc. 10.250%, 03/15/14 117,105 662,000 Jean Coutu Group, Inc.@ 8.500%, 08/01/14 621,452 221,000 NBTY, Inc. 7.125%, 10/01/15 208,845 196,000 Pinnacle Foods Holding@ 8.250%, 12/01/13 193,060 314,000 Playtex Products, Inc. 8.000%, 03/01/11 326,952 319,000 Reynolds American, Inc.* 7.300%, 07/15/15 320,804 98,000 Smithfield Foods, Inc.@ 7.750%, 05/15/13 98,245 253,000 Spectrum Brands, Inc.@ 8.500%, 10/01/13 203,033 150,000 WH Intermediate Holdings, Ltd. 9.500%, 04/01/11 164,813 ------------ 3,571,646 ------------ ENERGY (0.5%) 441,000 Arch Western Finance, LLC 6.750%, 07/01/13 422,257 Chesapeake Energy Corp. 196,000 6.875%, 01/15/16 190,120 98,000 7.750%, 01/15/15 99,225 194,000 Comstock Resources, Inc. 6.875%, 03/01/12 183,330 44,000 Energy Partners, Ltd. 8.750%, 08/01/10 43,010 245,000 Forest Oil Corp. 8.000%, 12/15/11 252,963 Giant Industries, Inc. 294,000 8.000%, 05/15/14 294,000 98,000 11.000%, 05/15/12 106,330 557,000 Houston Exploration Company 7.000%, 06/15/13 548,645 See accompanying Notes to Schedule of Investments 5 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PRINCIPAL AMOUNT VALUE ----------- ------------ $ 338,000 KCS Energy, Inc. 7.125%, 04/01/12 $ 324,480 227,000 Paramount Resources, Ltd. 8.500%, 01/31/13 235,229 Petroleo Brasileiro, SA 368,000 8.375%, 12/10/18 417,220 245,000 9.125%, 07/02/13 284,200 858,000 Premcor Refining Group, Inc. 7.500%, 06/15/15 892,511 98,000 Superior Energy Services, Inc.* 6.875%, 06/01/14 95,550 147,000 Swift Energy Company 7.625%, 07/15/11 147,735 319,000 Whiting Petroleum Corp. 7.250%, 05/01/12 318,203 341,000 Williams Companies, Inc.@ 7.750%, 06/15/31 336,737 ------------ 5,191,745 ------------ FINANCIALS (0.2%) E*TRADE Financial Corporation 373,000 7.375%, 09/15/13 375,797 283,000 7.875%, 12/01/15 293,612 69,000 8.000%, 06/15/11 71,243 Host Marriott Corp. 540,000 7.125%, 11/01/13@ 543,375 103,000 9.250%, 10/01/07 106,863 602,000 Leucadia National Corp. 7.000%, 08/15/13 592,970 47,000 Omega Healthcare Investors, Inc. 7.000%, 04/01/14 45,473 Senior Housing Properties Trust 245,000 8.625%, 01/15/12 258,475 173,000 7.875%, 04/15/15 175,595 ------------ 2,463,403 ------------ HEALTH CARE (0.3%) 798,000 Ameripath, Inc.@ 10.500%, 04/01/13 843,885 245,000 Angiotech Pharmaceuticals, Inc.* 7.750%, 04/01/14 238,263 716,000 Bausch & Lomb, Inc. 7.125%, 08/01/28 736,145 98,000 Bio-Rad Laboratories, Inc. 7.500%, 08/15/13 98,980 110,000 Biovail Corp. 7.875%, 04/01/10 112,200 44,000 DaVita, Inc.@ 7.250%, 03/15/15 42,295 34,000 Omnicare, Inc.@ 6.875%, 12/15/15 32,980 213,000 Psychiatric Solutions, Inc. 7.750%, 07/15/15 207,675 495,000 Tenet Healthcare Corp.* 9.250%, 02/01/15 457,875 262,000 Valeant Pharmaceuticals International 7.000%, 12/15/11 250,210 PRINCIPAL AMOUNT VALUE ----------- ------------ $ 343,000 Vanguard Health Systems, Inc. 9.000%, 10/01/14 $ 333,567 ------------ 3,354,075 ------------ INDUSTRIALS (0.7%) 135,000 Accuride Corp. 8.500%, 02/01/15 126,225 294,000 American Airlines, Inc. 7.250%, 02/05/09 296,572 123,000 Armor Holdings, Inc.@ 8.250%, 08/15/13 129,150 147,000 BE Aerospace, Inc.@ 8.875%, 05/01/11 153,982 785,000 CNH Global, NV 9.250%, 08/01/11 831,119 74,000 Columbus McKinnon Corp. 8.875%, 11/01/13 75,850 809,000 Esterline Technologies Corp.@ 7.750%, 06/15/13 821,135 49,000 FTI Consulting, Inc. 7.625%, 06/15/13 49,735 172,000 Gardner Denver, Inc. 8.000%, 05/01/13 180,600 74,000 GATX Corp. 8.875%, 06/01/09 79,437 288,000 General Cable Corp. 9.500%, 11/15/10 308,160 172,000 Greenbrier Companies, Inc. 8.375%, 05/15/15 175,655 92,000 H&E Equipment Service, Inc.*Y 5.375%, 07/15/16 93,035 33,000 Hexcel Corporation 6.750%, 02/01/15 31,763 289,000 Interline Brands, Inc. 8.125%, 06/15/14 292,612 JLG Industries, Inc. 373,000 8.250%, 05/01/08 393,515 172,000 8.375%, 06/15/12@ 183,180 213,000 Manitowoc Company, Inc. 10.500%, 08/01/12 231,105 414,000 Mobile Mini, Inc. 9.500%, 07/01/13 445,050 245,000 Monitronics International, Inc.@ 11.750%, 09/01/10 242,244 253,000 Orbital Sciences Corp. 9.000%, 07/15/11 268,180 Sequa Corp. 343,000 8.875%, 04/01/08 358,864 98,000 9.000%, 08/01/09 103,635 Terex Corp. 135,000 9.250%, 07/15/11 143,775 93,000 7.375%, 01/15/14 92,768 110,000 Trinity Industries, Inc. 6.500%, 03/15/14 107,250 98,000 Wesco Distribution, Inc. 7.500%, 10/15/17 97,755 196,000 Westinghouse Air Brake Technologies Corporation 6.875%, 07/31/13 194,040 See accompanying Notes to Schedule of Investments 6 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) PRINCIPAL AMOUNT VALUE ----------- ------------ $ 123,000 Williams Scotsman International, Inc. 8.500%, 10/01/15 $ 123,923 ------------ 6,630,314 ------------ INFORMATION TECHNOLOGY (0.3%) 332,000 Advanced Micro Devices, Inc. 7.750%, 11/01/12 334,075 44,000 Anixter International, Inc. 5.950%, 03/01/15 40,810 134,000 Arrow Electronics, Inc. 6.875%, 06/01/18 133,341 44,000 Avago Technologies*@ 11.875%, 12/01/15 47,740 Celestica, Inc.@ 417,000 7.625%, 07/01/13 408,660 196,000 7.875%, 07/01/11 195,020 98,000 Flextronics International, Ltd.@ 6.500%, 05/15/13 95,550 245,000 Freescale Semiconductor, Inc. 7.125%, 07/15/14 251,125 98,000 GBP Iron Mountain, Inc.* 7.250%, 04/15/14 178,487 21,000 Sanmina-SCI Corporation@ 8.125%, 03/01/16 20,580 466,000 SunGuard Data Systems, Inc.@ 9.125%, 08/15/13 478,233 298,000 Telcordia Technologies* 10.000%, 03/15/13 239,890 1,005,000 Xerox Corp. 7.625%, 06/15/13 1,020,075 ------------ 3,443,586 ------------ MATERIALS (0.5%) 61,000 Agrium, Inc. 7.125%, 05/23/36 61,902 Aleris International, Inc. 255,000 10.375%, 10/15/10 279,862 189,000 9.000%, 11/15/14 213,570 245,000 Ball Corp.@ 6.875%, 12/15/12 245,000 49,000 Crown Americas, LLC*@ 7.750%, 11/15/15 48,571 933,000 Equistar Chemicals, LP 10.625%, 05/01/11 1,007,640 630,000 Freeport-McMoRan Copper & Gold, Inc. 10.125%, 02/01/10 674,100 44,000 Gibraltar Industries, Inc.* 8.000%, 12/01/15 44,000 Ineos Group Holdings, PLC* 294,000 EUR 7.875%, 02/15/16 352,083 49,000 8.500%, 02/15/16@ 46,183 294,000 IPSCO, Inc. 8.750%, 06/01/13 315,315 441,000 Neenah Paper, Inc.@ 7.375%, 11/15/14 412,335 123,000 P.H. Glatfelter Company* 7.125%, 05/01/16 120,540 PRINCIPAL AMOUNT VALUE ----------- ------------ $ 147,000 Polyone Corp.@ 10.625%, 05/15/10 $ 158,760 245,000 Sealed Air Corp.* 6.875%, 07/15/33 238,837 98,000 Texas Industries, Inc. 7.250%, 07/15/13 98,613 Union Carbide Corp. 238,000 7.875%, 04/01/23 255,560 159,000 7.500%, 06/01/25 164,647 181,000 Westlake Chemical Corporation 6.625%, 01/15/16 169,235 ------------ 4,906,753 ------------ TELECOMMUNICATION SERVICES (0.1%) 294,000 AT&T Corp. 8.000%, 11/15/31 344,038 34,000 Citizens Communications Company 9.000%, 08/15/31 35,020 343,000 Sprint Nextel Corporation 7.375%, 08/01/15 351,756 135,000 Stratos Global Corp.*@ 9.875%, 02/15/13 113,063 221,000 Syniverse Technologies, Inc. 7.750%, 08/15/13 216,027 ------------ 1,059,904 ------------ UTILITIES (0.2%) 245,000 Centerpoint Energy, Inc.@ 6.850%, 06/01/15 253,922 49,000 NRG Energy, Inc. 7.375%, 02/01/16 48,020 245,000 Public Service Enterprise Group, Inc. 8.625%, 02/15/08 253,269 618,000 Teco Energy, Inc. 7.500%, 06/15/10 639,630 343,000 TXU Corp. 6.500%, 11/15/24 312,093 ------------ 1,506,934 ------------ TOTAL CORPORATE BONDS 43,046,497 ------------ NUMBER OF CONTRACTS VALUE ----------- ------------ OPTIONS (0.7%) CONSUMER DISCRETIONARY (0.0%) 120 Garmin, Ltd.# Call, 01/19/08, Strike 100.00 207,000 300 Lowe's Companies, Inc.# Call, 01/19/08, Strike 35.00 61,500 310 Office Depot, Inc.# Call, 01/19/08, Strike 40.00 153,450 ------------ 421,950 ------------ CONSUMER STAPLES (0.1%) 640 Kroger Company# Call, 01/19/08, Strike 20.00 320,000 See accompanying notes to Schedule of Investments 7 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) NUMBER OF CONTRACTS VALUE ----------- ------------ 260 PepsiCo, Inc.# Call, 01/19/08, Strike 60.00 $ 213,200 ------------ 533,200 ------------ ENERGY (0.1%) 190 Anadarko Petroleum Corp.# Call, 01/19/08, Strike 47.50 139,650 130 BJ Services Company# Call, 01/19/08, Strike 40.00 76,050 100 Diamond Offshore Drilling, Inc.# Call, 01/19/08, Strike 85.00 138,000 210 Nabors Industries Ltd.# Call, 01/19/08, Strike 37.50 118,650 85 Petroleo Brasileiro, SA# Call, 01/19/08, Strike 90.00 160,225 140 Schlumberger, Ltd.# Call, 01/19/08, Strike 65.00 189,700 140 Weatherford International, Ltd.# Call, 01/19/08, Strike 55.00 80,500 ------------ 902,775 ------------ FINANCIALS (0.1%) 235 Aon Corp.# Call, 01/19/08, Strike 35.00 106,925 500 Charles Schwab Corp.# Call, 01/19/08, Strike 17.50 106,250 20 Chicago Mercantile Exchange Holdings, Inc.# Call, 01/19/08, Strike 420.00 221,700 175 CIT Group, Inc.# Call, 01/19/08, Strike 50.00 84,875 280 E*TRADE Financial Corporation# Call, 01/19/08, Strike 25.00 113,400 70 Goldman Sachs Group, Inc.# Call, 01/19/08, Strike 160.00 141,050 140 Lehman Brothers Holdings, Inc.# Call, 01/19/08, Strike 75.00 94,500 175 Merrill Lynch & Company, Inc.# Call, 01/19/08, Strike 70.00 193,375 130 Prudential Financial, Inc.# Call, 01/19/08, Strike 75.00 157,950 230 State Street Corp.# Call, 01/19/08, Strike 60.00 180,550 ------------ 1,400,575 ------------ HEALTH CARE (0.0%) 90 Allergan, Inc.# Call, 01/19/08, Strike 110.00 142,200 240 AmerisourceBergen Corp.# Call, 01/19/08, Strike 47.50 104,400 ------------ 246,600 ------------ INDUSTRIALS (0.0%) 130 Burlington Northern Santa Fe Corp.# Call, 01/19/08, Strike 80.00 96,200 ------------ INFORMATION TECHNOLOGY (0.3%) 225 Agilent Technologies, Inc.# Call, 01/19/08, Strike 35.00 63,000 NUMBER OF CONTRACTS VALUE ----------- ------------ 85 Apple Computer, Inc.# Call, 01/19/08, Strike 75.00 $ 105,400 500 Electronic Data Systems Corp.# Call, 01/19/08, Strike 25.00 153,750 335 Hewlett-Packard Company# Call, 01/19/08, Strike 30.00 226,125 390 Intuit, Inc.# Call, 01/19/08, Strike 27.50 286,650 240 Marvell Technology Group, Ltd.# Call, 01/19/08, Strike 32.50 41,400 330 Motorola, Inc.# Call, 01/19/08, Strike 22.50 130,350 230 National Semiconductor Corp.# Call, 01/19/08, Strike 25.00 96,600 Nokia Corp.# 2,200 Call, 01/19/08, Strike 17.50 979,000 2,200 Call, 01/19/08, Strike 20.00 682,000 230 NVIDIA Corp.# Call, 01/19/08, Strike 30.00 66,125 310 Paychex, Inc.# Call, 01/19/08, Strike 40.00 83,700 90 Sandisk Corp.# Call, 01/19/08, Strike 65.00 60,750 ------------ 2,974,850 ------------ MATERIALS (0.1%) 130 Alcan, Inc.# Call, 01/19/08, Strike 55.00 66,300 250 Goldcorp, Inc.# Call, 01/19/08, Strike 27.50 207,500 343 Harmony Gold Mining Co, Ltd.# Call, 01/19/08, Strike 15.00 120,050 110 Phelps Dodge Corp.# Call, 01/19/08, Strike 72.50 272,800 90 United States Steel Corp.# Call, 01/19/08, Strike 70.00 102,150 ------------ 768,800 ------------ TELECOMMUNICATION SERVICES (0.0%) 230 America Movil, S.A. de C.V.# Call, 01/19/08, Strike 40.00 120,750 130 NII Holdings, Inc.# Call, 01/19/08, Strike 55.00 132,600 ------------ 253,350 ------------ TOTAL OPTIONS 7,598,300 ------------ TOTAL SYNTHETIC CONVERTIBLE SECURITIES (Cost $51,793,675) 50,644,797 ------------ NUMBER OF SHARES VALUE ----------- ------------ CONVERTIBLE PREFERRED STOCKS (28.9%) CONSUMER DISCRETIONARY (3.8%) 1,317,300 Ford Motor Company Capital Trust II 6.500% 37,674,780 ------------ See accompanying notes to Schedule of Investments 8 CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JULY 31, 2006 (UNAUDITED) NUMBER OF SHARES VALUE ----------- ------------ CONSUMER STAPLES (3.0%) 1,190,000 Albertson's, Inc. 7.250% $ 29,738,100 ------------ ENERGY (3.2%) 55,000 Chesapeake Energy Corp. 6.250% 15,401,100 125,000 Hess Corp. 7.000% 16,598,750 ------------ 31,999,850 ------------ FINANCIALS (16.4%) 635,000 Chubb Corp. 7.000% 22,364,700 19,000 Fortis Insurance, N.V. (Assurant, Inc.)*[] 7.750% 24,263,000 215,000 Hartford Financial Services Group, Inc. 7.000% 16,021,800 350,000 Lazard, Ltd. 6.625% 12,201,000 775,000 Lehman Brothers Holdings, Inc. (General Mills, Inc.)[] 6.250% 20,204,250 230,000 Merrill Lynch & Co., Inc. (Nuveen Investments, Inc.)[] 6.750% 9,673,800 500,000 Metlife, Inc. 6.375% 13,730,000 570,000 National Australia Bank, Ltd. 7.875% 25,080,000 375,000 Washington Mutual, Inc. 5.375% 20,906,250 ------------ 164,444,800 ------------ HEALTH CARE (1.0%) 200,000 Schering-Plough Corp. 6.000% 10,612,000 ------------ INDUSTRIALS (1.1%) 3,350,000 GBP BAE Systems, PLC 7.750% 10,616,850 ------------ UTILITIES (0.4%) 80,000 Southern Union Company 5.000% 4,238,400 ------------ TOTAL CONVERTIBLE PREFERRED STOCKS (Cost $285,208,979) 289,324,780 ------------ PRINCIPAL AMOUNT VALUE ----------- ------------ SHORT-TERM INVESTMENT (1.3%) COMMERCIAL PAPER (1.3%) $13,210,000 Citigroup, Inc 5.230%, 08/01/06 (Cost $13,210,000) 13,210,000 ------------ NUMBER OF SHARES VALUE ----------- -------------- INVESTMENT OF CASH COLLATERAL FOR SECURITIES ON LOAN (15.5%) 155,341,197 Bank of New York Institutional Cash Reserve Fund current rate 5.400% (Cost $155,341,197) $ 155,341,197 -------------- TOTAL INVESTMENTS (155.5%) (Cost $1,541,980,798) 1,555,906,790 -------------- PAYABLE UPON RETURN OF SECURITIES ON LOAN (-15.5%) (155,341,197) -------------- OTHER ASSETS, LESS LIABILITIES (3.0%) 29,717,596 -------------- PREFERRED SHARES AT REDEMPTION VALUE INCLUDING DIVIDENDS PAYABLE (-43.0%) (430,265,745) -------------- NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS (100.0%) $1,000,017,444 -------------- NOTES TO SCHEDULE OF INVESTMENTS Note: Value for securities denominated in foreign currencies are shown in U.S. dollars. The principal amount for such securities is shown in the respective foreign currency. The date shown on options represents the expiration date of the option contracts. The option contracts may be exercised at any date on or before the date shown. * 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 generally be effected through a sale that is exempt from registration (e.g. a sale to another QIB), or the security must be registered for public sale. At July 31, 2006, the market value of 144A securities that were not subject to mandatory issuer registration obligations is $116,575,127 or 11.7 % of net assets. Y Security purchased on when issued basis. @ Security, or portion of security, is on loan. # Non-income producing security. ++ Variable rate security. The interest rate shown is the rate in effect at July 31, 2006. [] Securities exchangeable or convertible into securities of an entity different than the issuer. Such entity is identified in the parenthetical. FOREIGN CURRENCY ABBREVIATIONS CAD Canadian Dollar EUR European Monetary Unit GBP British Pound Sterling See accompanying notes to Schedule of Investments 9 NOTES TO SCHEDULES OF INVESTMENTS (unaudited) NOTE 1 - ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION. CALAMOS Convertible and High Income Fund (the "Fund") was organized as a Delaware statutory trust on March 12, 2003 and is registered under the Investment Company Act of 1940 (the "1940 Act") as a diversified, closed-end management investment company. The Fund commenced operations on May 28, 2003. 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 convertible 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). PORTFOLIO VALUATION. Calamos Advisors LLC values the Fund's portfolio securities in accordance with policies and procedures on the valuation of securities adopted by the Board of Trustees and under the ultimate supervision of the Board of Trustees. Portfolio securities that are traded on U.S. securities exchanges, except option securities, are valued at the last current reported sales price at the time as of which the Fund determines its NAV. Securities traded in the over-the-counter ("OTC") market and quoted on The Nasdaq Stock Market are valued at the Nasdaq Official Closing Price ("NOCP"), as determined by Nasdaq, or lacking a NOCP, the last current reported sale price on Nasdaq at the time as of which the Fund determines its NAV. When a most recent last sale or closing price is not available, portfolio securities, other than option securities, that are traded on a U.S. securities exchange and other securities traded in the OTC 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 OTC option that is not traded through the Options Clearing Corporation is valued by the counterparty to such option. 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, including any thinly-traded security, junk bond or synthetic convertible instrument, 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, which may include utilizing a systematic fair valuation model provided by an independent pricing service. Securities that are principally traded in a foreign market are valued as of the last current sale price at the time as of which 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, 10 NOTES TO SCHEDULES OF INVESTMENTS (unaudited) in accordance with guidelines adopted by the Board of Trustees. Trading in securities on European and Far Eastern securities exchanges and OTC markets is normally completed at various times before the close of business on each day on which the 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 NAV is not calculated. As stated above, if the market prices are not readily available or are not reflective of a security's fair value, 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 Board of Trustees guidelines and under the ultimate supervision of the Board of Trustees if the value of a foreign security it holds is materially affected by events occurring before their pricing time but after the close of the primary market or exchange on which the security is traded. Those procedures may utilize valuations furnished by pricing services approved by the Board of Trustees, which may be based on market transactions for comparable securities and various relationships between securities that are generally recognized by institutional traders, a computerized matrix system, or appraisals derived from information concerning the securities or similar securities received from recognized dealers in those securities. When fair value pricing of securities is employed, the prices of securities used by the Fund to calculate its NAV may differ from market quotations or official closing prices. 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 fiscal quarter ends, which are recorded on trade date. Net realized gains and losses from investment transactions are reported on an identified cost basis. Interest income is recognized using the accrual method and includes accretion of original issue and market discount and amortization of premium. Dividend income is recognized on the ex-dividend date, except that certain dividends from foreign securities are recorded as soon as the information becomes available. FOREIGN CURRENCY TRANSLATION. Values of investments and other assets and liabilities denominated in foreign currencies are translated into U.S. dollars using a rate quoted by a major bank or dealer in the particular currency market, as reported by a recognized quotation dissemination service. The Fund does not isolate that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in market prices of securities held. Such fluctuations are included with the net realized and unrealized gain or loss from investments. Reported net realized foreign currency gains or losses arise from disposition of foreign currency, the difference in the foreign exchange rates between the trade and settlement 11 NOTES TO SCHEDULES OF INVESTMENTS (unaudited) dates on securities transactions, and the difference between the amounts of dividends, interest and foreign withholding taxes recorded on the ex-date or accrual date and the U.S. dollar equivalent of the amounts actually received or paid. Net unrealized foreign exchange gains and losses arise from changes (due to the changes in the exchange rate) in the value of foreign currency and other assets and liabilities denominated in foreign currencies held at period end. 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 market value should the counterparty not perform under the contract. Put and call options purchased are accounted for in the same manner as portfolio securities. The cost of securities acquired through the exercise of purchased call options is increased by premiums paid. The proceeds from securities sold through the exercise of purchased put options are decreased by the premiums paid. When the Fund writes an option, an amount equal to the premium received by the Fund is recorded as a liability and is subsequently adjusted to the current value of the option written. Premiums received from writing options that expire unexercised are treated by the Fund on the expiration date as realized gains from written options. The difference between the premium and the amount paid on effecting a closing purchase transaction, including brokerage commissions, is also treated as a realized gain, or, if the premium is less than the amount paid for the closing purchase transaction, as a realized loss. If a written call option is exercised, the premium is added to the proceeds from the sale of the underlying security or currency in determining whether the Fund has realized a gain or loss. If a written put option is exercised, the premium reduces the cost basis of the securities purchased by the Fund. 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. NOTE 2 - INVESTMENTS The following information is presented on an income tax basis as of July 31, 2006. 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 July 31, 2006 was as follows: Cost basis of investments $1,552,960,015 -------------- Gross unrealized appreciation 45,935,002 Gross unrealized depreciation (42,988,227) -------------- Net unrealized appreciation (depreciation) $ 2,946,775 -------------- 12 NOTES TO SCHEDULES OF INVESTMENTS (unaudited) NOTE 3 - 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 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 when a position is closed or upon settlement of the contracts. There were no open forward foreign currency contracts at July 31, 2006. NOTE 4 - 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 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 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 purchase synthetic convertible instruments 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. Different companies may issue the fixed-income and convertible components, which may be purchased separately and at different times. NOTE 5 - PREFERRED SHARES There are unlimited shares of Auction Rate Cumulative Preferred Shares ("Preferred Shares") authorized. The Preferred Shares have rights as determined by the Board of Trustees. The 17,200 shares of Preferred Shares outstanding consist of six series, 3,000 shares of M, 3,000 shares of TU, 3,000 shares of W, 3,000 shares of TH, 3,000 shares of 13 NOTES TO SCHEDULES OF INVESTMENTS (unaudited) F, and 2,200 shares of A. 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 or twenty-eight days based on the results of an auction. Dividend rates ranged from 3.60% to 5.30% for the nine-month period ended July 31, 2006. Under the 1940 Act, the Fund may not declare dividends or make other distributions on shares of common stock or purchase 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%. The Preferred Shares are redeemable at the Fund's option, in whole or in part, on any dividend payment date at $25,000 per share plus any accumulated but 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 only the holders of common stock, when the respective classes vote alone. NOTE 6 - 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 Fund's net asset value. 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 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. Net unrealized gains are reported as an asset and net unrealized losses are reported as a liability on the Statement of Assets and Liabilities. The change in the value of the swaps, including periodic amounts of interest to be paid or received on swaps is reported as unrealized gains or losses in the Statement of Operations. A realized gain or loss is recorded upon payment or termination of swap agreements. Details of the swap agreements outstanding as of July 31, 2006 were as follows: 14 NOTES TO SCHEDULES OF INVESTMENTS (unaudited) Unrealized Termination Notional Fixed Rate Floating Rate Appreciation Counterparty Date Amount (000) (Fund Pays) (Fund Receives) (Depreciation) ------------ ---------------- ------------ ----------- --------------- -------------- Citibank NA October 27, 2006 $100,000 2.80% 1month LIBOR $ 662,348 Citibank NA October 27, 2007 200,000 3.27% 1month LIBOR 5,162,041 Citibank NA October 27, 2008 100,000 3.65% 1month LIBOR 3,476,086 ---------- $9,300,475 ========== NOTE 7 - SECURITIES LENDING During the nine-month period ended July 31, 2006, the Fund loaned 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 continues to receive the equivalent of the interest or dividends paid by the issuer on the securities loaned and also receives 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 has 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 does not have the right to vote the securities during the existence of the loan but could call the loan in an attempt to permit voting of the securities in certain circumstances. Upon return of the securities loaned, the cash or cash equivalent collateral will be returned to the borrower. 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) the expenses of enforcing its rights. In an effort to reduce these risks, Calamos Advisors LLC and the security lending agent will monitor the creditworthiness of the firms to which the Fund lends securities. At July 31, 2006, the Fund had securities valued at $151,676,027 that were on loan to broker-dealers and banks and $155,341,197 in cash or cash equivalent collateral. 15 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. ITEM 3. EXHIBITS. (a) Certification of Principal Executive Officer. (b) Certification of Principal Financial Officer. 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 and High Income Fund By: /s/ John P. Calamos, Sr. --------------------------------- Name: John P. Calamos, Sr. Title: Principal Executive Officer Date: September 22, 2006 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 and High Income Fund By: /s/ John P. Calamos, Sr. --------------------------------- Name: John P. Calamos, Sr. Title: Principal Executive Officer Date: September 22, 2006 By: /s/ Patrick H. Dudasik --------------------------------- Name: Patrick H. Dudasik Title: Principal Financial Officer Date: September 22, 2006