13F-HR 1 c07554e13fvhr.txt HOLDINGS REPORT UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 2006 ----------------- Check here if Amendment [ ]; Amendment Number: ------------ This Amendment (Check only one.): [ ] is a restatement [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: CALAMOS PARTNERS LLC ---------------------------------- Address: 2020 Calamos Court ---------------------------------- Naperville, Illinois 60563 ---------------------------------- ---------------------------------- Form 13F File Number: 028-11885 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Walter R. Randall, Jr. ---------------------------------- Title: Chief Compliance Officer ---------------------------------- Phone: (630) 245-7200 ---------------------------------- ---------------------------------- Signature, Place, and Date of Signing: /s/ Walter R. Randall, Jr. Naperville, Illinois August 14, 2006 -------------------------- -------------------- --------------- [Signature] [City, State] [Date] Report Type (Check only one.): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) FORM 13F SUMMARY PAGE Report Summary: ~~Form 13F Information Table Entry Total: 120 Form 13F Information Table Value Total: $108,689 (thousands)~~

EDWARDS LIFESCIENCES 3.875% CONVERTIBLE SENIOR NOTE 28176EAB4 $ 455 450000 prn sole none 450 0 ENCORE WIRE CORP COMMON STOCK 292562105 $ 2516 70000 shs sole none 70000 0 EURONET WORLDWIDE INC 3.5% CONVERTIBLE DEBENTURES DU 298736AF6 $ 296 250000 prn sole none 250 0 FLIR SYSTEMS INC COMMON STOCK 302445101 $ 305 13300 shs sole none 13300 0 FLIR SYSTEMS INC 3% SENIOR CONVERTIBLE NOTES DU 302445AB7 $ 450 375000 prn sole none 375 0 FINISAR CORP COMMON STOCK 31787A101 $ 92 28000 shs sole none 28000 0 FINISAR CORP 2.50% CASH PAY CONVERTIBLE SUB 31787AAF8 $ 233 200000 prn sole none 200 0 FORD MOTOR CO COMMON STOCK 345370860 $ 142 20500 shs sole none 20500 0 FORD MOTOR CAP TRUST II 6.50% CONVERTIBLE TRUST PREFER 345395206 $ 367 13200 shs sole none 13200 0 FUEL-TECH NV COMMON STOCK 359523107 $ 1755 145000 shs sole none 145000 0 GATX CORP COMMON STOCK 361448103 $ 438 10300 shs sole none 10300 0 GATX CORP 7.50% SENIOR UNSECURED CONVERT 361448AC7 $ 504 400000 prn sole none 400 0 GEO CORP INC COMMON STOCK 36159R103 $ 1682 48000 shs sole none 48000 0 GAIAM INC COMMON STOCK 36268Q103 $ 1893 135000 shs sole none 135000 0 GENZYME-GENERAL COMMON STOCK 372917104 $ 208 3415 shs sole none 3415 0 GENZYME CORP 1.25% SENIOR UNSECURED CONVERT 372917AN4 $ 467 450000 prn sole none 450 0 GMX RESOURCES INC COMMON STOCK 38011M108 $ 1175 38000 shs sole none 38000 0 GREY WOLF INC COMMON STOCK 397888108 $ 412 53500 shs sole none 53500 0 GREY WOLF INC 3.75% SENIOR UNSECURED CONTING 397888AD0 $ 594 460000 prn sole none 460 0 GIFFON CORP COMMON STOCK 398433102 $ 206 7900 shs sole none 7900 0 GRIFFON CORP 4% SUBORDINATED UNSECURED CONV 398433AC6 $ 275 225000 prn sole none 225 0 HANOVER COMPRESSOR 4.75% Convertible Senior Unsec 410768AE5 $ 285 200000 prn sole none 200 0 HUTCHINSON TECH 3.25% CONVERTIBLE SUBORDINATED 448407AF3 $ 307 350000 prn sole none 350 0 ILLUMINA INC COMMON STOCK 452327109 $ 2225 75000 shs sole none 75000 0 IMPCO TECH INC COMMON STOCK 45255W106 $ 1761 165000 shs sole none 165000 0 INSITUFORM TECH- A COMMON STOCK 457667103 $ 1373 60000 shs sole none 60000 0 INTEGRA LIFESCI COMMON STOCK 457985208 $ 404 10400 shs sole none 10400 0 INTEGRA LIFESCI 2.50% 2.50% Convertible Notes due 20 457985AB5 $ 606 505000 prn sole none 505 0 INTERVEST BANCSHARES CORP COMMON STOCK 460927106 $ 1944 48000 shs sole none 48000 0 INVITROGEN 2% CONVERTIBLE SENIOR NOTES DU 46185RAJ9 $ 270 250000 prn sole none 250 0 JAKKS PACIFIC INC COMMON STOCK 47012E106 $ 265 13200 shs sole none 13200 0 JAKKS PACIFIC 4.625% CONVERTIBLE SENIOR NOTE 47012EAB2 $ 417 350000 prn sole none 350 0 KV PHARMA 2.50% CASH PAY SUBORDINATED CO 482740AC1 $ 221 225000 prn sole none 225 0 KENEXA CORP COMMON STOCK 488879107 $ 1624 51000 shs sole none 51000 0 KNOLOGY INC COMMON STOCK 499183804 $ 1860 200000 shs sole none 200000 0 LASERCARD CORP COMMON STOCK 51807U101 $ 1178 90000 shs sole none 90000 0 LIVEPERSON INC COMMON STOCK 538146101 $ 1698 350000 shs sole none 350000 0 STEVEN MADDEN LTD COMMON STOCK 556269108 $ 1555 52500 shs sole none 52500 0 MEDAREX INC 2.25% SENIOR UNSECURED CONVERT 583916AG6 $ 218 225000 prn sole none 225 0 MERIX CORP COMMON STOCK 590049102 $ 1755 160000 shs sole none 160000 0 NAPCO SECURITY SYSTEMS INC COMMON STOCK 630402105 $ 1458 150000 shs sole none 150000 0 NUVELO INC COMMON STOCK 67072M301 $ 1832 110000 shs sole none 110000 0 OCWEN FINANCIAL CORP COMMON STOCK 675746309 $ 135 10600 shs sole none 10600 0 OCWEN FINL CORP 3.25% SENIOR UNSECURED CONVERT 675746AD3 $ 235 200000 prn sole none 200 0 OLYMPIC STEEL INC COMMON STOCK 68162K106 $ 1770 50000 shs sole none 50000 0 OMNICARE INC 3.25% CASH PAY CONVERTIBLE SEN 681904AL2 $ 363 400000 prn sole none 400 0 OMNICELL INC COMMON STOCK 68213N109 $ 1935 140000 shs sole none 140000 0

ON ASSIGNMENT INC COMMON STOCK 682159108 $ 1470 160000 shs sole none 160000 0 OPEN SOLUTIONS INC COMMON STOCK 68371P102 $ 345 12950 shs sole none 12950 0 OPEN SOLUTIONS INC 1.4673% CATZ DUE 2035 68371PAB8 $ 467 800000 prn sole none 800 0 OPNET TECHNOLOGIES INC COMMON STOCK 683757108 $ 2203 170000 shs sole none 170000 0 PEOPLESUPPORT INC COMMON STOCK 712714302 $ 1683 125000 shs sole none 125000 0 PETMED EXPRESS INC COMMON STOCK 716382106 $ 1042 95000 shs sole none 95000 0 PLAYBOY ENTERPRISES INC -CL B COMMON STOCK 728117300 $ 105 10500 shs sole none 10500 0 PLAYBOY ENTERPRISES INC 3% CASH PAY CONVERTIBLE SR SUB 728117AB8 $ 350 400000 prn sole none 400 0 POWERWAVE TECH COMMON STOCK 739363109 $ 198 21750 shs sole none 21750 0 POWERWAVE TECH 1.875% CONVERTIBLE SUBORDINATE 739363AD1 $ 313 300000 prn sole none 300 0 PRUDENTIAL FINANCIAL INC COMMON STOCK 744320102 $ 253 3250 shs sole none 3250 0 QUANTUM CP-DSSG COMMON STOCK 747906204 $ 66 25000 shs sole none 25000 0 QUANTUM CORP 4.375% CASH PAY CONVERTIBLE SU 747906AE5 $ 225 250000 prn sole none 250 0 SLM CORP (CATZ) FLOATING RATE CONVERTIBLE SENI 78442PAC0 $ 373 370000 prn sole none 370 0 HENRY SCHEIN INC 3% CONVERTIBLE SENIOR NOTES DU 806407AB8 $ 294 250000 prn sole none 250 0 SIRENZA MICRODEVICES INC COMMON STOCK 82966T106 $ 1821 150000 shs sole none 150000 0 SMITH MICRO SOFTWARE COMMON STOCK 832154108 $ 1842 115000 shs sole none 115000 0 SONIC AUTOMOTIVE INC COMMON STOCK 83545G102 $ 207 9350 shs sole none 9350 0 SONIC AUTOMOTVE INC 4.25% CONVERTIBLE (STEP) SR SUB NOTES 83545GAK8 $ 326 300000 prn sole none 300 0 STAMPS.COM INC COMMON STOCK 852857200 $ 1530 55000 shs sole none 55000 0 SUNTRUST BANKS INC COMMON STOCK 867914103 $ 206 2700 shs sole none 2700 0 SUPERIOR ESSEX INC COMMON STOCK 86815V105 $ 1646 55000 shs sole none 55000 0 TTM TECHNOLOGIES INC COMMON STOCK 87305R109 $ 1592 110000 shs sole none 110000 0 TEAM INC COMMON STOCK 878155100 $ 1253 50000 shs sole none 50000 0 THESTREET.COM INC COMMON STOCK 88368Q103 $ 2756 215000 shs sole none 215000 0 THORATEC CORP 1.3798% SENIOR SUBORDINATED CO 885175AB5 $ 268 500000 prn sole none 500 0 TRADESTATION GROUP INC COMMON STOCK 89267P105 $ 1710 135000 shs sole none 135000 0 24/7 REAL MEDIA INC COMMON STOCK 901314203 $ 1888 215000 shs sole none 215000 0 WILD OATS MARKETS INC COMMON STOCK 96808B107 $ 1960 100000 shs sole none 100000 0 YRC WORLDWIDE INC COMMON STOCK 984249102 $ 244 5800 shs sole none 5800 0 YRC WORLDWIDE INC 3.375% Convertible Senior Unse 985577AB1 $ 416 350000 prn sole none 350 0 GIGAMEDIA LTD COMMON STOCK Y2711Y104 $ 1776 200000 shs sole none 200000 0 $108,689,421

CALAMOS PARTNERS LLC 13F-HR