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, 2007 DATE OF REPORTING PERIOD: January 31, 2007 CALAMOS CONVERTIBLE AND HIGH INCOME FUND ITEM 1. SCHEDULE OF INVESTMENTS January 31, 2007 (UNAUDITED) CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) PRINCIPAL AMOUNT VALUE ------------ --------------- CORPORATE BONDS (77.1%) CONSUMER DISCRETIONARY (22.9%) $ 2,705,000 Asbury Automotive Group, Inc. 9.000%, 06/15/12 $ 2,843,631 Beazer Homes USA, Inc.< 9,015,000 8.375%, 04/15/12 9,307,987 6,311,000 8.125%, 06/15/16 6,594,995 4,508,000 Broder Bros. Company 11.250%, 10/15/10 4,530,540 4,508,000 DEX Media, Inc. 8.000%, 11/15/13 4,722,130 13,839,000 DIRECTV Financing Company, Inc. 8.375%, 03/15/13 14,548,249 EchoStar DBS Corp. 5,680,000 7.125%, 02/01/16 5,729,700 1,690,000 6.625%, 10/01/14 1,660,425 10,918,000 GBP EMI Group, PLC 9.750%, 05/20/08 22,407,272 7,663,000 Expedia, Inc.*< 7.456%, 08/15/18 7,907,971 Ford Motor Company 9,015,000 7.450%, 07/16/31< 7,358,494 7,212,000 8.625%, 11/01/10 7,457,771 6,108,000 GameStop Corp.< 8.000%, 10/01/12 6,489,750 3,606,000 General Motors Acceptance Corp. 6.875%, 09/15/11 3,663,191 General Motors Corp. 5,860,000 7.200%, 01/15/11 5,728,150 4,327,000 7.125%, 07/15/13< 4,208,008 Goodyear Tire & Rubber Company 6,311,000 7.857%, 08/15/11< 6,484,552 4,508,000 7.000%, 03/15/28 4,057,200 3,155,000 Group 1 Automotive, Inc. 8.250%, 08/15/13 3,265,425 6,536,000 Hanes Brands, Inc.*++ 8.735%, 12/15/14 6,748,420 8,384,000 Hasbro, Inc. 6.600%, 07/15/28 8,218,860 7,212,000 Hovnanian Enterprises, Inc.< 8.625%, 01/15/17 7,644,720 5,409,000 Idearc, Inc.* 8.000%, 11/15/16 5,523,941 4,508,000 Interpublic Group of Companies, Inc.< 7.250%, 08/15/11 4,620,700 J.C. Penney Company, Inc. 1,803,000 9.000%, 08/01/12< 2,055,943 1,352,000 7.650%, 08/15/16 1,487,849 4,057,000 Jarden Corp.< 9.750%, 05/01/12 4,315,634 2,894,000 Kellwood Company 7.625%, 10/15/17 2,646,687 4,508,000 Landry's Restaurants, Inc. 7.500%, 12/15/14 4,462,920 PRINCIPAL AMOUNT VALUE ------------ --------------- $ 3,155,000 Liberty Media Corp. 8.250%, 02/01/30 $ 3,133,937 6,311,000 Linens 'n Things, Inc.< ++ 10.985%, 01/15/14 6,153,225 3,539,000 Mandalay Resort Group< 7.625%, 07/15/13 3,521,305 1,352,000 NCL Holding, ASA 10.625%, 07/15/14 1,382,420 10,663,000 Oxford Industries, Inc. 8.875%, 06/01/11 11,089,520 856,000 Phillips-Van Heusen Corp.< 8.125%, 05/01/13 903,080 902,000 Pinnacle Entertainment, Inc. 8.250%, 03/15/12 927,933 2,705,000 Rent-A-Center, Inc. 7.500%, 05/01/10 2,745,575 10,728,000 Royal Caribbean Cruises, Ltd.< 7.500%, 10/15/27 10,586,702 811,000 Station Casinos, Inc. 6.875%, 03/01/16 746,120 7,753,000 Vail Resorts, Inc. 6.750%, 02/15/14 7,675,470 6,311,000 Warnaco Group, Inc. 8.875%, 06/15/13 6,736,992 Warner Music Group 1,803,000 GBP 8.125%, 04/15/14 3,639,766 1,803,000 7.375%, 04/15/14 1,784,970 2,705,000 WCI Communities, Inc.< 6.625%, 03/15/15 2,475,075 811,000 Wynn Las Vegas, LLC< 6.625%, 12/01/14 806,945 --------------- 241,000,150 --------------- CONSUMER STAPLES (7.2%) 1,803,000 Central Garden & Pet Company 9.125%, 02/01/13 1,888,643 4,958,000 Chattem, Inc. 7.000%, 03/01/14 4,920,815 3,832,000 Chiquita Brands International, Inc.< 8.875%, 12/01/15 3,640,400 1,659,000 Constellation Brands, Inc. 7.250%, 09/01/16 1,704,623 5,098,000 Del Monte Foods Company 8.625%, 12/15/12 5,403,880 9,466,000 Dole Food Company, Inc. 7.250%, 06/15/10 9,193,852 12,171,000 Jean Coutu Group, Inc. 8.500%, 08/01/14 12,718,695 4,057,000 NBTY, Inc. 7.125%, 10/01/15 4,067,143 Pilgrim's Pride Corp. 4,463,000 8.375%, 05/01/17< 4,418,370 2,299,000 7.625%, 05/01/15 2,287,505 3,606,000 Pinnacle Foods Holding< 8.250%, 12/01/13 3,705,165 5,770,000 Playtex Products, Inc. 8.000%, 03/01/11 6,065,712 See accompanying notes to Schedule of Investments 1 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) PRINCIPAL AMOUNT VALUE ------------ --------------- Reynolds American, Inc. $ 5,860,000 7.300%, 07/15/15 $ 6,103,758 3,606,000 7.625%, 06/01/16 3,833,073 1,803,000 Smithfield Foods, Inc. 7.750%, 05/15/13 1,843,568 3,561,000 SUPERVALU, Inc. 7.500%, 11/15/14 3,728,221 --------------- 75,523,423 --------------- ENERGY (9.5%) 8,114,000 Arch Western Finance, LLC 6.750%, 07/01/13 8,053,145 Chesapeake Energy Corp. 3,606,000 6.875%, 01/15/16 3,587,970 1,803,000 7.750%, 01/15/15 1,857,090 3,561,000 Comstock Resources, Inc. 6.875%, 03/01/12 3,431,914 730,000 Energy Partners, Ltd. 8.750%, 08/01/10 744,600 4,508,000 Forest Oil Corp. 8.000%, 12/15/11 4,699,590 Giant Industries, Inc. 5,409,000 8.000%, 05/15/14 5,834,959 1,803,000 11.000%, 05/15/12< 1,929,210 3,155,000 Hanover Compressor Company 9.000%, 06/01/14 3,375,850 10,232,000 Houston Exploration Company 7.000%, 06/15/13 10,359,900 6,221,000 Petrohawk Energy Corp. 7.125%, 04/01/12 5,972,160 Petroleo Brasileiro, SA 6,762,000 8.375%, 12/10/18 8,019,732 4,508,000 9.125%, 07/02/13 5,279,995 15,777,000 Premcor Refining Group, Inc. 7.500%, 06/15/15 16,198,498 5,049,000 Superior Energy Services, Inc. 6.875%, 06/01/14 4,973,265 2,705,000 Swift Energy Company 7.625%, 07/15/11 2,765,862 5,860,000 Whiting Petroleum Corp. 7.250%, 05/01/12 5,845,350 6,266,000 Williams Companies, Inc. 7.750%, 06/15/31 6,610,630 --------------- 99,539,720 --------------- FINANCIALS (4.2%) E*TRADE Financial Corp. 6,852,000 7.375%, 09/15/13< 7,143,210 5,206,000 7.875%, 12/01/15< 5,596,450 1,262,000 8.000%, 06/15/11 1,323,522 9,917,000 Host Hotels & Resorts, Inc.< 7.125%, 11/01/13 10,115,340 11,066,000 Leucadia National Corp. 7.000%, 08/15/13 11,148,995 856,000 Omega Healthcare Investors, Inc. 7.000%, 04/01/14 860,280 Senior Housing Properties Trust 4,508,000 8.625%, 01/15/12 4,913,720 PRINCIPAL AMOUNT VALUE ------------ --------------- $ 3,185,000 7.875%, 04/15/15 $ 3,312,400 --------------- 44,413,917 --------------- HEALTH CARE (4.8%) 14,672,000 Ameripath, Inc.< 10.500%, 04/01/13 15,992,480 4,508,000 Angiotech Pharmaceuticals, Inc. 7.750%, 04/01/14 4,169,900 1,803,000 Bio-Rad Laboratories, Inc. 7.500%, 08/15/13 1,875,120 2,028,000 Biovail Corp. 7.875%, 04/01/10 2,081,235 811,000 DaVita, Inc.< 7.250%, 03/15/15 825,193 631,000 Omnicare, Inc. 6.875%, 12/15/15 626,268 4,823,000 Psychiatric Solutions, Inc. 7.750%, 07/15/15 4,835,057 9,105,000 Tenet Healthcare Corp. 9.250%, 02/01/15 9,127,763 4,823,000 Valeant Pharmaceuticals International< 7.000%, 12/15/11 4,654,195 6,311,000 Vanguard Health Systems, Inc. 9.000%, 10/01/14 6,492,441 --------------- 50,679,652 --------------- INDUSTRIALS (9.2%) 5,409,000 AMR Corp. 7.250%, 02/05/09 5,544,225 2,254,000 Armor Holdings, Inc. 8.250%, 08/15/13 2,366,700 2,705,000 BE Aerospace, Inc. 8.875%, 05/01/11 2,806,438 14,425,000 CNH Global, NV 9.250%, 08/01/11 15,362,625 14,875,000 Esterline Technologies Corp.< 7.750%, 06/15/13 15,395,625 902,000 FTI Consulting, Inc. 7.625%, 06/15/13 927,933 3,155,000 Gardner Denver, Inc. 8.000%, 05/01/13 3,304,863 1,352,000 GATX Corp. 8.875%, 06/01/09 1,445,316 5,292,000 General Cable Corp. 9.500%, 11/15/10 5,609,520 1,686,000 H&E Equipment Service, Inc. 8.375%, 07/15/16 1,791,375 IKON Office Solutions, Inc. 2,254,000 7.750%, 09/15/15 2,383,605 1,803,000 6.750%, 12/01/25 1,590,428 5,319,000 Interline Brands, Inc. 8.125%, 06/15/14 5,465,272 3,918,000 Manitowoc Company, Inc.< 10.500%, 08/01/12 4,206,953 7,615,000 Mobile Mini, Inc. 9.500%, 07/01/13 8,176,606 Sequa Corp. 6,311,000 8.875%, 04/01/08 6,516,107 1,803,000 9.000%, 08/01/09 1,920,195 See accompanying notes to Schedule of Investments 2 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) PRINCIPAL AMOUNT VALUE ------------ --------------- $ 1,708,000 Terex Corp.< 7.375%, 01/15/14 $ 1,750,700 2,028,000 Trinity Industries, Inc. 6.500%, 03/15/14 2,002,650 1,803,000 WESCO International, Inc. 7.500%, 10/15/17 1,821,030 3,606,000 Westinghouse Air Brake Technologies Corp.< 6.875%, 07/31/13 3,587,970 2,254,000 Williams Scotsman International, Inc. 8.500%, 10/01/15 2,355,430 --------------- 96,331,566 --------------- INFORMATION TECHNOLOGY (6.3%) 6,107,000 Advanced Micro Devices, Inc. 7.750%, 11/01/12 6,259,675 811,000 Anixter International, Inc. 5.950%, 03/01/15 771,464 2,470,000 Arrow Electronics, Inc. 6.875%, 06/01/18 2,534,161 811,000 Avago Technologies*< 11.875%, 12/01/15 892,100 Celestica, Inc. 7,663,000 7.625%, 07/01/13 7,327,744 3,606,000 7.875%, 07/01/11< 3,542,895 1,803,000 Flextronics International, Ltd.< 6.500%, 05/15/13 1,757,925 6,536,000 Freescale Semiconductor, Inc.* 8.875%, 12/15/14 6,536,000 1,803,000 GBP Iron Mountain, Inc.* 7.250%, 04/15/14 3,533,495 4,508,000 NXP, BV*< 7.875%, 10/15/14 4,677,050 383,000 Sanmina-SCI Corp. 8.125%, 03/01/16 366,722 8,565,000 SunGard Data Systems, Inc. 9.125%, 08/15/13 9,057,487 18,481,000 Xerox Corp. 7.625%, 06/15/13 19,312,645 --------------- 66,569,363 --------------- MATERIALS (7.3%) 1,127,000 Agrium, Inc. 7.125%, 05/23/36 1,186,465 4,508,000 Ball Corp. 6.875%, 12/15/12 4,609,430 902,000 Crown Holdings, Inc.< 7.750%, 11/15/15 938,080 17,147,000 Equistar Chemicals, LP 10.625%, 05/01/11 18,261,555 811,000 Gibraltar Industries, Inc. 8.000%, 12/01/15 802,890 Ineos Group Holdings, PLC* 5,409,000 EUR 7.875%, 02/15/16 6,662,077 902,000 8.500%, 02/15/16< 868,175 5,409,000 IPSCO, Inc. 8.750%, 06/01/13 5,828,197 8,114,000 Neenah Paper, Inc. 7.375%, 11/15/14 7,850,295 PRINCIPAL AMOUNT VALUE ------------ --------------- $ 2,254,000 P.H. Glatfelter Company< 7.125%, 05/01/16 $ 2,282,175 2,705,000 Polyone Corp. 10.625%, 05/15/10 2,887,587 4,508,000 Sealed Air Corp.* 6.875%, 07/15/33 4,491,411 4,057,000 Terra Industries, Inc.*+ 7.000%, 02/01/17 4,016,430 1,803,000 Texas Industries, Inc. 7.250%, 07/15/13 1,852,583 3,110,000 The Mosaic Company* 7.625%, 12/01/16 3,195,525 Union Carbide Corp. 4,372,000 7.875%, 04/01/23 4,683,173 2,930,000 7.500%, 06/01/25 3,025,345 3,336,000 Westlake Chemical Corp.< 6.625%, 01/15/16 3,285,960 --------------- 76,727,353 --------------- TELECOMMUNICATION SERVICES (3.3%) 5,409,000 AT&T Corp. 8.000%, 11/15/31 6,729,045 3,381,000 CenturyTel, Inc.< 6.875%, 01/15/28 3,280,618 631,000 Citizens Communications Company 9.000%, 08/15/31 683,058 3,155,000 Leap Wireless International, Inc.* 9.375%, 11/01/14 3,328,525 3,426,000 Qwest Communications International, Inc. 7.750%, 02/15/31 3,426,000 3,381,000 CAD Rogers Communications, Inc. 7.250%, 12/15/11 3,138,170 4,057,000 CAD Rogers Wireless, Inc. 7.625%, 12/15/11 3,833,637 6,311,000 Sprint Nextel Corp. 7.375%, 08/01/15 6,473,982 4,057,000 Syniverse Technologies, Inc. 7.750%, 08/15/13 4,087,427 --------------- 34,980,462 --------------- UTILITIES (2.4%) 4,508,000 Centerpoint Energy, Inc.< 6.850%, 06/01/15 4,740,883 902,000 NRG Energy, Inc. 7.375%, 02/01/16 905,383 1,902,000 Public Service Enterprise Group, Inc. 8.625%, 02/15/08 1,951,927 11,359,000 Teco Energy, Inc. 7.500%, 06/15/10 11,983,745 6,311,000 TXU Corp. 6.500%, 11/15/24 5,875,819 --------------- 25,457,757 --------------- TOTAL CORPORATE BONDS (Cost $785,871,993) 811,223,363 --------------- See accompanying notes to Schedule of Investments 3 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) PRINCIPAL AMOUNT VALUE ------------ --------------- CONVERTIBLE BONDS (24.1%) CONSUMER DISCRETIONARY (7.4%) $ 7,000,000 EchoStar Communications Corp. 5.750%, 05/15/08 $ 7,148,750 6,500,000 Lamar Advertising Company 2.875%, 12/31/10 9,010,625 6,531,595 Liberty Media Corp. (Motorola, Inc.) & 3.500%, 01/15/31 6,619,772 Liberty Media Corp. (Sprint Corp. PCS)& 4,142,000 3.750%, 02/15/30 2,599,105 1,974,000 4.000%, 11/15/29 1,359,593 2,320,000 Liberty Media Corp. (Time Warner) & 3.250%, 03/15/31 2,006,800 6,750,000 GBP Punch Taverns Redwood Jersey Company Ltd. 5.000%, 12/14/10 16,311,908 11,500,000 The Interpublic Group of Companies, Inc.*++ 5.710%, 06/15/09 14,884,450 United Auto Group, Inc. 3,960,000 3.500%, 04/01/26* 4,618,350 2,290,000 3.500%, 04/01/26 2,670,712 9,000,000 Walt Disney Company< 2.125%, 04/15/23 11,238,750 --------------- 78,468,815 --------------- CONSUMER STAPLES (0.7%) 4,750,000 Church & Dwight Co., Inc. 5.250%, 08/15/33 7,255,625 --------------- FINANCIALS (1.1%) 11,250,000 Travelers Property Casualty Corp. 4.500%, 04/15/32 11,592,000 --------------- HEALTH CARE (2.9%) 10,500,000 Emdeon Corp.* 3.125%, 09/01/25 11,340,000 10,500,000 Health Management Associates, Inc.< 4.375%, 08/01/23 10,893,750 8,000,000 Wyeth< ++ 4.877%, 01/15/24 8,594,400 --------------- 30,828,150 --------------- INDUSTRIALS (2.3%) 6,400,000 Lockheed Martin Corp.++ 5.124%, 08/15/33 8,845,952 5,500,000 Quanta Services, Inc.*< 3.750%, 04/30/26 6,318,125 13,000,000 Roper Industries, Inc.++ 1.481%, 01/15/34 8,758,750 --------------- 23,922,827 --------------- INFORMATION TECHNOLOGY (7.3%) 4,000,000 Andrew Corp. 3.250%, 08/15/13 4,080,000 2,500,000 ASM International NV 4.250%, 12/06/11 3,015,085 PRINCIPAL AMOUNT VALUE ------------ --------------- $ 4,000,000 CSG Systems International, Inc. 2.500%, 06/15/24 $ 4,305,000 20,500,000 Electronic Data Systems Corp. 3.875%, 07/15/23 21,499,375 32,000,000 Intel Corp.< 2.950%, 12/15/35 29,440,000 6,000,000 Mentor Graphics Corp.* 6.250%, 03/01/26 8,025,000 6,380,000 Vishay Intertechnology, Inc. 3.625%, 08/01/23 6,364,050 --------------- 76,728,510 --------------- UTILITIES (2.4%) 6,500,000 CenterPoint Energy, Inc. 3.750%, 05/15/23 9,945,000 2,250,000 EUR International Power, PLC 3.250%, 07/20/13 3,571,141 3,500,000 GBP Scottish & Southern Energy, PLC 3.750%, 10/29/09 11,648,318 --------------- 25,164,459 --------------- TOTAL CONVERTIBLE BONDS (Cost $229,064,463) 253,960,386 --------------- SYNTHETIC CONVERTIBLE SECURITIES (9.9%) CORPORATE BONDS (8.4%) CONSUMER DISCRETIONARY (2.5%) 295,000 Asbury Automotive Group, Inc. 9.000%, 06/15/12 310,119 Beazer Homes USA, Inc.< 985,000 8.375%, 04/15/12 1,017,012 689,000 8.125%, 06/15/16 720,005 492,000 Broder Bros. Company 11.250%, 10/15/10 494,460 492,000 DEX Media, Inc. 8.000%, 11/15/13 515,370 1,511,000 DIRECTV Financing Company, Inc. 8.375%, 03/15/13 1,588,439 EchoStar DBS Corp. 620,000 7.125%, 02/01/16 625,425 185,000 6.625%, 10/01/14 181,763 1,193,000 GBP EMI Group, PLC 9.750%, 05/20/08 2,448,422 837,000 Expedia, Inc.*< 7.456%, 08/15/18 863,757 Ford Motor Company 985,000 7.450%, 07/16/31< 804,006 788,000 8.625%, 11/01/10 814,853 667,000 GameStop Corp.< 8.000%, 10/01/12 708,687 394,000 General Motors Acceptance Corp. 6.875%, 09/15/11 400,249 General Motors Corp. 640,000 7.200%, 01/15/11 625,600 473,000 7.125%, 07/15/13< 459,993 Goodyear Tire & Rubber Company 689,000 7.857%, 08/15/11< 707,947 See accompanying notes to Schedule of Investments 4 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) PRINCIPAL AMOUNT VALUE ------------ --------------- $ 492,000 7.000%, 03/15/28 $ 442,800 345,000 Group 1 Automotive, Inc. 8.250%, 08/15/13 357,075 714,000 Hanes Brands, Inc.*++ 8.735%, 12/15/14 737,205 916,000 Hasbro, Inc. 6.600%, 07/15/28 897,958 788,000 Hovnanian Enterprises, Inc.< 8.625%, 01/15/17 835,280 591,000 Idearc, Inc.* 8.000%, 11/15/16 603,559 492,000 Interpublic Group of Companies, Inc.< 7.250%, 08/15/11 504,300 J.C. Penney Company, Inc. 197,000 9.000%, 08/01/12< 224,637 148,000 7.650%, 08/15/16 162,871 443,000 Jarden Corp.< 9.750%, 05/01/12 471,241 316,000 Kellwood Company 7.625%, 10/15/17 288,996 492,000 Landry's Restaurants, Inc. 7.500%, 12/15/14 487,080 345,000 Liberty Media Corp. 8.250%, 02/01/30 342,697 689,000 Linens 'n Things, Inc.< ++ 10.985%, 01/15/14 671,775 386,000 Mandalay Resort Group< 7.625%, 07/15/13 384,070 148,000 NCL Holding, ASA 10.625%, 07/15/14 151,330 1,165,000 Oxford Industries, Inc. 8.875%, 06/01/11 1,211,600 94,000 Phillips-Van Heusen Corp.< 8.125%, 05/01/13 99,170 98,000 Pinnacle Entertainment, Inc. 8.250%, 03/15/12 100,818 295,000 Rent-A-Center, Inc. 7.500%, 05/01/10 299,425 1,172,000 Royal Caribbean Cruises, Ltd.< 7.500%, 10/15/27 1,156,564 89,000 Station Casinos, Inc. 6.875%, 03/01/16 81,880 847,000 Vail Resorts, Inc. 6.750%, 02/15/14 838,530 689,000 Warnaco Group, Inc. 8.875%, 06/15/13 735,507 Warner Music Group 197,000 GBP 8.125%, 04/15/14 397,689 197,000 7.375%, 04/15/14 195,030 295,000 WCI Communities, Inc.< 6.625%, 03/15/15 269,925 89,000 Wynn Las Vegas, LLC< 6.625%, 12/01/14 88,555 --------------- 26,323,674 --------------- CONSUMER STAPLES (0.8%) 197,000 Central Garden & Pet Company 9.125%, 02/01/13 206,358 PRINCIPAL AMOUNT VALUE ------------ --------------- $ 542,000 Chattem, Inc. 7.000%, 03/01/14 $ 537,935 418,000 Chiquita Brands International, Inc.< 8.875%, 12/01/15 397,100 181,000 Constellation Brands, Inc. 7.250%, 09/01/16 185,978 557,000 Del Monte Foods Company 8.625%, 12/15/12 590,420 1,034,000 Dole Food Company, Inc. 7.250%, 06/15/10 1,004,272 1,329,000 Jean Coutu Group, Inc. 8.500%, 08/01/14 1,388,805 443,000 NBTY, Inc. 7.125%, 10/01/15 444,107 Pilgrim's Pride Corp. 487,000 8.375%, 05/01/17< 482,130 251,000 7.625%, 05/01/15 249,745 394,000 Pinnacle Foods Holding< 8.250%, 12/01/13 404,835 630,000 Playtex Products, Inc. 8.000%, 03/01/11 662,287 Reynolds American, Inc. 640,000 7.300%, 07/15/15 666,622 394,000 7.625%, 06/01/16 418,811 197,000 Smithfield Foods, Inc. 7.750%, 05/15/13 201,433 389,000 SUPERVALU, Inc. 7.500%, 11/15/14 407,267 --------------- 8,248,105 --------------- ENERGY (1.0%) 886,000 Arch Western Finance, LLC 6.750%, 07/01/13 879,355 Chesapeake Energy Corp. 394,000 6.875%, 01/15/16 392,030 197,000 7.750%, 01/15/15 202,910 389,000 Comstock Resources, Inc. 6.875%, 03/01/12 374,899 80,000 Energy Partners, Ltd. 8.750%, 08/01/10 81,600 492,000 Forest Oil Corp. 8.000%, 12/15/11 512,910 Giant Industries, Inc. 591,000 8.000%, 05/15/14 637,541 197,000 11.000%, 05/15/12< 210,790 345,000 Hanover Compressor Company 9.000%, 06/01/14 369,150 1,118,000 Houston Exploration Company 7.000%, 06/15/13 1,131,975 679,000 Petrohawk Energy Corp. 7.125%, 04/01/12 651,840 Petroleo Brasileiro, SA 738,000 8.375%, 12/10/18 875,268 492,000 9.125%, 07/02/13 576,255 1,723,000 Premcor Refining Group, Inc. 7.500%, 06/15/15 1,769,032 551,000 Superior Energy Services, Inc. 6.875%, 06/01/14 542,735 See accompanying notes to Schedule of Investments 5 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) PRINCIPAL AMOUNT VALUE ------------ --------------- $ 295,000 Swift Energy Company 7.625%, 07/15/11 $ 301,637 640,000 Whiting Petroleum Corp. 7.250%, 05/01/12 638,400 684,000 Williams Companies, Inc. 7.750%, 06/15/31 721,620 --------------- 10,869,947 --------------- FINANCIALS (0.4%) E*TRADE Financial Corp. 748,000 7.375%, 09/15/13< 779,790 569,000 7.875%, 12/01/15< 611,675 138,000 8.000%, 06/15/11 144,728 1,083,000 Host Hotels & Resorts, Inc.< 7.125%, 11/01/13 1,104,660 1,209,000 Leucadia National Corp. 7.000%, 08/15/13 1,218,067 94,000 Omega Healthcare Investors, Inc. 7.000%, 04/01/14 94,470 Senior Housing Properties Trust 492,000 8.625%, 01/15/12 536,280 348,000 7.875%, 04/15/15 361,920 --------------- 4,851,590 --------------- HEALTH CARE (0.5%) 1,603,000 Ameripath, Inc.< 10.500%, 04/01/13 1,747,270 492,000 Angiotech Pharmaceuticals, Inc. 7.750%, 04/01/14 455,100 197,000 Bio-Rad Laboratories, Inc. 7.500%, 08/15/13 204,880 222,000 Biovail Corp. 7.875%, 04/01/10 227,827 89,000 DaVita, Inc.< 7.250%, 03/15/15 90,558 69,000 Omnicare, Inc. 6.875%, 12/15/15 68,483 527,000 Psychiatric Solutions, Inc. 7.750%, 07/15/15 528,317 995,000 Tenet Healthcare Corp. 9.250%, 02/01/15 997,488 527,000 Valeant Pharmaceuticals International< 7.000%, 12/15/11 508,555 689,000 Vanguard Health Systems, Inc. 9.000%, 10/01/14 708,809 --------------- 5,537,287 --------------- INDUSTRIALS (1.0%) 591,000 AMR Corp. 7.250%, 02/05/09 605,775 246,000 Armor Holdings, Inc. 8.250%, 08/15/13 258,300 295,000 BE Aerospace, Inc. 8.875%, 05/01/11 306,063 1,575,000 CNH Global, NV 9.250%, 08/01/11 1,677,375 1,625,000 Esterline Technologies Corp.< 7.750%, 06/15/13 1,681,875 PRINCIPAL AMOUNT VALUE ------------ --------------- $ 98,000 FTI Consulting, Inc. 7.625%, 06/15/13 $ 100,818 345,000 Gardner Denver, Inc. 8.000%, 05/01/13 361,387 148,000 GATX Corp. 8.875%, 06/01/09 158,215 578,000 General Cable Corp. 9.500%, 11/15/10 612,680 184,000 H&E Equipment Service, Inc. 8.375%, 07/15/16 195,500 IKON Office Solutions, Inc. 246,000 7.750%, 09/15/15 260,145 197,000 6.750%, 12/01/25 173,774 581,000 Interline Brands, Inc. 8.125%, 06/15/14 596,977 428,000 Manitowoc Company, Inc.< 10.500%, 08/01/12 459,565 832,000 Mobile Mini, Inc. 9.500%, 07/01/13 893,360 Sequa Corp. 689,000 8.875%, 04/01/08 711,392 197,000 9.000%, 08/01/09 209,805 187,000 Terex Corp.< 7.375%, 01/15/14 191,675 222,000 Trinity Industries, Inc. 6.500%, 03/15/14 219,225 197,000 WESCO International, Inc. 7.500%, 10/15/17 198,970 394,000 Westinghouse Air Brake Technologies Corp.< 6.875%, 07/31/13 392,030 246,000 Williams Scotsman International, Inc. 8.500%, 10/01/15 257,070 --------------- 10,521,976 --------------- INFORMATION TECHNOLOGY (0.7%) 667,000 Advanced Micro Devices, Inc. 7.750%, 11/01/12 683,675 89,000 Anixter International, Inc. 5.950%, 03/01/15 84,661 270,000 Arrow Electronics, Inc. 6.875%, 06/01/18 277,014 89,000 Avago Technologies*< 11.875%, 12/01/15 97,900 Celestica, Inc. 837,000 7.625%, 07/01/13 800,381 394,000 7.875%, 07/01/11< 387,105 197,000 Flextronics International, Ltd.< 6.500%, 05/15/13 192,075 714,000 Freescale Semiconductor, Inc.* 8.875%, 12/15/14 714,000 197,000 GBP Iron Mountain, Inc.* 7.250%, 04/15/14 386,078 492,000 NXP, BV*< 7.875%, 10/15/14 510,450 42,000 Sanmina-SCI Corp. 8.125%, 03/01/16 40,215 See accompanying notes to Schedule of Investments 6 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) PRINCIPAL AMOUNT VALUE ------------ --------------- $ 935,000 SunGard Data Systems, Inc. 9.125%, 08/15/13 $ 988,762 2,019,000 Xerox Corp. 7.625%, 06/15/13 2,109,855 --------------- 7,272,171 --------------- MATERIALS (0.8%) 123,000 Agrium, Inc. 7.125%, 05/23/36 129,490 492,000 Ball Corp. 6.875%, 12/15/12 503,070 98,000 Crown Holdings, Inc.< 7.750%, 11/15/15 101,920 1,873,000 Equistar Chemicals, LP 10.625%, 05/01/11 1,994,745 89,000 Gibraltar Industries, Inc. 8.000%, 12/01/15 88,110 Ineos Group Holdings, PLC* 591,000 EUR 7.875%, 02/15/16 727,914 98,000 8.500%, 02/15/16< 94,325 591,000 IPSCO, Inc. 8.750%, 06/01/13 636,802 886,000 Neenah Paper, Inc. 7.375%, 11/15/14 857,205 246,000 P.H. Glatfelter Company< 7.125%, 05/01/16 249,075 295,000 Polyone Corp. 10.625%, 05/15/10 314,913 492,000 Sealed Air Corp.* 6.875%, 07/15/33 490,189 443,000 Terra Industries, Inc.*+ 7.000%, 02/01/17 438,570 197,000 Texas Industries, Inc. 7.250%, 07/15/13 202,418 340,000 The Mosaic Company* 7.625%, 12/01/16 349,350 Union Carbide Corp. 478,000 7.875%, 04/01/23 512,021 320,000 7.500%, 06/01/25 330,413 364,000 Westlake Chemical Corp.< 6.625%, 01/15/16 358,540 --------------- 8,379,070 --------------- TELECOMMUNICATION SERVICES (0.4%) 591,000 AT&T Corp. 8.000%, 11/15/31 735,231 369,000 CenturyTel, Inc.< 6.875%, 01/15/28 358,044 69,000 Citizens Communications Company 9.000%, 08/15/31 74,693 345,000 Leap Wireless International, Inc.* 9.375%, 11/01/14 363,975 374,000 Qwest Communications International, Inc. 7.750%, 02/15/31 374,000 369,000 CAD Rogers Communications, Inc. 7.250%, 12/15/11 342,498 443,000 CAD Rogers Wireless, Inc. 7.625%, 12/15/11 418,610 PRINCIPAL AMOUNT VALUE ------------ --------------- $ 689,000 Sprint Nextel Corp. 7.375%, 08/01/15 $ 706,793 443,000 Syniverse Technologies, Inc. 7.750%, 08/15/13 446,323 --------------- 3,820,167 --------------- UTILITIES (0.3%) 492,000 Centerpoint Energy, Inc.< 6.850%, 06/01/15 517,417 98,000 NRG Energy, Inc. 7.375%, 02/01/16 98,368 208,000 Public Service Enterprise Group, Inc. 8.625%, 02/15/08 213,460 1,241,000 Teco Energy, Inc. 7.500%, 06/15/10 1,309,255 689,000 TXU Corp. 6.500%, 11/15/24 641,489 --------------- 2,779,989 --------------- TOTAL CORPORATE BONDS 88,603,976 --------------- NUMBER OF CONTRACTS VALUE ------------ --------------- OPTIONS (1.5%) CONSUMER DISCRETIONARY (0.3%) 930 Comcast Corp.# Call, 01/17/09, Strike $42.50 850,950 240 Garmin, Ltd.# Call, 01/19/08, Strike $50.00 178,800 600 Harley-Davidson, Inc.# Call, 01/17/09, Strike $70.00 630,000 Nike, Inc.# 230 Call, 01/17/09, Strike $100.00 304,750 230 Call, 01/17/09, Strike $90.00 438,150 310 Office Depot, Inc.# Call, 01/19/08, Strike $40.00 113,150 450 Omnicom Group, Inc.# Call, 01/17/09, Strike $100.00 814,500 --------------- 3,330,300 --------------- CONSUMER STAPLES (0.1%) 1,050 Coca-Cola Company# Call, 01/17/09, Strike $45.00 672,000 550 Kroger Company# Call, 01/19/08, Strike $22.50 253,000 260 PepsiCo, Inc.# Call, 01/19/08, Strike $60.00 213,200 --------------- 1,138,200 --------------- ENERGY (0.0%) 130 BJ Services Company# Call, 01/19/08, Strike $40.00 9,100 210 Nabors Industries, Ltd.# Call, 01/19/08, Strike $37.50 32,550 85 Petroleo Brasileiro, SA# Call, 01/19/08, Strike $90.00 147,050 140 Schlumberger, Ltd.# Call, 01/19/08, Strike $65.00 110,600 See accompanying notes to Schedule of Investments 7 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) NUMBER OF CONTRACTS VALUE ------------ --------------- 140 Weatherford International, Ltd.# Call, 01/19/08, Strike $55.00 $ 18,900 --------------- 318,200 --------------- FINANCIALS (0.3%) 580 A.G. Edwards, Inc.# Call, 01/17/09, Strike $70.00 498,800 950 Bank of America Corp.# Call, 01/17/09, Strike $50.00 669,750 500 Charles Schwab Corp.# Call, 01/19/08, Strike $17.50 152,500 20 Chicago Mercantile Exchange Holdings, Inc.# Call, 01/19/08, Strike $510.00 203,300 280 E*TRADE Financial Corp.# Call, 01/19/08, Strike $25.00 89,600 Goldman Sachs Group, Inc.# 150 Call, 01/17/09, Strike $195.00 726,750 70 Call, 01/19/08, Strike $190.00 273,700 140 Lehman Brothers Holdings, Inc.# Call, 01/19/08, Strike $75.00 202,300 160 Merrill Lynch & Company, Inc.# Call, 01/19/08, Strike $85.00 237,600 --------------- 3,054,300 --------------- HEALTH CARE (0.1%) 90 Allergan, Inc.# Call, 01/19/08, Strike $110.00 156,600 820 Johnson & Johnson# Call, 01/17/09, Strike $65.00 668,300 --------------- 824,900 --------------- INDUSTRIALS (0.1%) 580 General Dynamics Corp.# Call, 01/17/09, Strike $75.00 791,700 --------------- INFORMATION TECHNOLOGY (0.5%) 90 Apple Computer, Inc.# Call, 01/19/08, Strike $90.00 114,300 1,240 Cisco Systems, Inc.# Call, 01/17/09, Strike $27.50 607,600 335 Hewlett-Packard Company# Call, 01/19/08, Strike $40.00 237,850 650 Infosys Technologies, Ltd.# Call, 01/17/09, Strike $55.00 884,000 315 Intuit, Inc.# Call, 01/19/08, Strike $35.00 76,388 1,600 Microsoft Corp.# Call, 01/17/09, Strike $30.00 784,000 330 Motorola, Inc.# Call, 01/19/08, Strike $22.50 45,375 Nokia Corp.# 2,200 Call, 01/19/08, Strike $20.00 792,000 2,200 Call, 01/19/08, Strike $17.50 1,188,000 230 NVIDIA Corp.# Call, 01/19/08, Strike $40.00 56,350 2,050 Oracle Corp.# Call, 01/17/09, Strike $17.50 666,250 NUMBER OF CONTRACTS VALUE ------------ --------------- 90 Sandisk Corp.# Call, 01/19/08, Strike $65.00 $ 12,825 --------------- 5,464,938 --------------- MATERIALS (0.0%) 130 Alcan, Inc.# Call, 01/19/08, Strike $55.00 62,400 343 Harmony Gold Mining Company, Ltd.# Call, 01/19/08, Strike $15.00 61,740 90 United States Steel Corp.# Call, 01/19/08, Strike $70.00 178,650 --------------- 302,790 --------------- TELECOMMUNICATION SERVICES (0.1%) 230 America Movil, S.A. de C.V.# Call, 01/19/08, Strike $40.00 207,000 150 NII Holdings, Inc.# Call, 01/19/08, Strike $70.00 203,250 --------------- 410,250 --------------- TOTAL OPTIONS 15,635,578 --------------- TOTAL SYNTHETIC CONVERTIBLE SECURITIES (Cost $101,917,620) 104,239,554 --------------- NUMBER OF SHARES VALUE ------------ --------------- CONVERTIBLE PREFERRED STOCKS (25.1%) CONSUMER DISCRETIONARY (2.0%) 567,800 Ford Motor Company Capital Trust II 6.500% 20,934,786 --------------- CONSUMER STAPLES (0.7%) 6,000 Universal Corp. 6.750% 7,284,000 --------------- ENERGY (1.3%) 55,000 Chesapeake Energy Corp. 6.250% 14,029,125 --------------- FINANCIALS (18.3%) 660,000 Citigroup, Inc. (Genworth Financial, Inc.) ++& 5.020% 21,714,000 19,000 Fortis Insurance, N.V. (Assurant, Inc.)*& 7.750% 26,943,900 350,000 Lazard, Ltd. 6.625% 15,263,500 775,000 Lehman Brothers Holdings, Inc. (General Mills, Inc.)& 6.250% 21,211,750 230,000 Merrill Lynch & Co., Inc. (Nuveen Investments, Inc.)& 6.750% 10,235,000 1,000,000 Metlife, Inc. 6.375% 31,420,000 570,000 National Australia Bank, Ltd. 7.875% 29,184,000 See accompanying notes to Schedule of Investments 8 CALAMOS CONVERTIBLE AND HIGH INCOME FUND SCHEDULE OF INVESTMENTS JANUARY 31, 2007 (UNAUDITED) NUMBER OF SHARES VALUE ------------ --------------- 35,000 Reinsurance Group of America, Inc. 5.750% $ 2,536,100 16,500 CHF Swiss Re 6.000% 13,682,402 375,000 Washington Mutual, Inc. 5.375% 20,775,000 --------------- 192,965,652 --------------- HEALTH CARE (1.5%) 265,000 Schering-Plough Corp. 6.000% 15,608,500 --------------- INDUSTRIALS (0.9%) 2,350,000 GBP BAE Systems, PLC 7.750% 9,099,209 --------------- UTILITIES (0.4%) 80,000 Southern Union Company 5.000% 4,237,200 --------------- TOTAL CONVERTIBLE PREFERRED STOCKS (Cost $236,593,321) 264,158,472 --------------- WARRANTS (0.2%) CONSUMER DISCRETIONARY (0.2%) 218,180 Expedia, Inc.# 05/07/12, Strike $24.46 572,723 218,180 IAC/InterActiveCorp# 05/07/12, Strike $30.54 1,718,167 --------------- 2,290,890 --------------- TOTAL WARRANTS (Cost $1,814,167) 2,290,890 --------------- PRINCIPAL AMOUNT VALUE ------------ --------------- SHORT-TERM INVESTMENT (1.7%) COMMERCIAL PAPER (1.7%) $ 17,863,000 Citigroup, Inc. 5.210%, 02/01/07 (Cost $17,863,000) 17,863,000 --------------- NUMBER OF SHARES VALUE ------------ --------------- INVESTMENTS OF CASH COLLATERAL FOR SECURITIES ON LOAN (12.8%) 134,604,000 Bank of New York Institutional Cash Reserve Fund current rate 5.310% (Cost $134,604,000) 134,604,000 --------------- TOTAL INVESTMENTS (150.9%) (Cost $1,507,728,564) 1,588,339,665 --------------- PAYABLE UPON RETURN OF SECURITIES ON LOAN (-12.8%) (134,604,000) --------------- OTHER ASSETS, LESS LIABILITIES (2.8%) 28,887,666 --------------- PREFERRED SHARES AT REDEMPTION VALUE INCLUDING DIVIDENDS PAYABLE (-40.9%) (430,357,958) --------------- NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS (100.0%) $ 1,052,265,373 --------------- NOTES TO SCHEDULE OF INVESTMENTS Note: Value for Securities denominated in foreign currencies are shown in U.S. dollars. * 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 January 31, 2007, the market value of 144A securities that were not subject to mandatory issuer registration obligations is $106,586,742 or 10.1% of net assets. + Security was purchased on when issued basis. < Security, or portion of security, is on loan. # Non-income producing security. ++ Variable rate or step bond security. The interest rate shown is the rate in effect at January 31, 2007. & 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 CHF Swiss Franc EUR European Monetary Unit GBP British Pound Sterling See accompanying notes to Schedule of Investments 9 NOTES TO SCHEDULE 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. The valuation of the Fund's portfolio securities is in accordance with policies and procedures adopted by 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. Trading in securities on European and Far Eastern securities exchanges and OTC markets is typically completed at various times before the close of business on each day on which the NYSE is open. Each security trading on these exchanges or OTC markets is evaluated 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 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, in accordance with guidelines adopted by the Board of Trustees. 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. 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 10 NOTES TO SCHEDULE OF INVESTMENTS (unaudited) 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. Short-term and long-term investment transactions are recorded on a trade date basis on January 31, 2007. 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 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 a Federal income tax basis as of January 31, 2007. Differences between the cost basis under U.S. generally accepted accounting principles and Federal income tax purposes are primarily due to timing differences. 11 NOTES TO SCHEDULE OF INVESTMENTS (unaudited) Cost basis of investments $1,516,581,874 -------------- Gross unrealized appreciation 79,469,611 Gross unrealized depreciation (7,711,820) -------------- Net unrealized appreciation (depreciation) $ 71,757,791 -------------- NOTE 3 - FORWARD FOREIGN CURRENCY CONTRACTS There were no open forward foreign currency contracts at January 31, 2007. 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. 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 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. NOTE 6 - INTEREST RATE TRANSACTIONS Swap agreements are stated at fair value. The contracts are marked-to-market daily based on dealer-supplied valuations and changes in value are recorded as unrealized appreciation (depreciation). Details of the interest rate swap agreements outstanding as of January 31, 2007 were as follows: 12 NOTES TO SCHEDULE OF INVESTMENTS (unaudited) Unrealized Termination Notional Fixed Rate Floating Rate Appreciation Counterparty Date Amount (000) (Fund Pays) (Fund Receives) (Depreciation) ------------ ---------------- ------------ ----------- --------------- -------------- Citibank NA October 27, 2007 200,000 3.27% 1month LIBOR 3,037,017 Citibank NA October 27, 2008 100,000 3.65% 1month LIBOR 2,606,279 ---------- $5,643,296 ========== NOTE 7 - SECURITIES LENDING For the three-month period ended January 31, 2007, 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, the Fund's securities lending agent monitors, and reports to Calamos Advisors on, the creditworthiness of the firms to which a Fund lends securities. At January 31, 2007, the Fund had securities valued at $130,470,039 that were on loan to broker-dealers and banks and $134,604,000 in cash or cash equivalent collateral. 13 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: March 28, 2007 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: March 28, 2007 By: /s/ Patrick H. Dudasik --------------------------------- Name: Patrick H. Dudasik Title: Principal Financial Officer Date: March 28, 2007