OMB APPROVAL -------------------------- OMB Number: 3235-0006 Expires: October 31, 2003 Estimated average burden hours per response....23.3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2008 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: Piper Jaffray Companies Address: 800 Nicollet Mall Suite 800 Minneapolis, MN 55402-7020 Form 13F File Number: 28-10776 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: Greg Meyer Title: Controller Phone: 612 303-6000 Signature, Place, and Date of Signing: Greg Meyer Minneapolis, MN 4/29/08 ------------------------------------- ---------------------- --------------- [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: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 207 Form 13F Information Table Value Total: $ 88,477 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. NONE COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ---------------------------- --------------- --------- -------- ------------------ ---------- -------- --------------------- Value SHRS OR SH/ PUT/ INVESTMENT OTHER NAME OF ISSUER TITLE OF CLASS CUSIP (X$1000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE -------------- --------------- --------- -------- --------- --- ---- ---------- -------- --------- ------ ---- ACTEL CORP COM 004934105 26 1,700 SH 1,700 0 0 ACTUANT CORP CL A NEW 00508X203 30 1,000 SH 1,000 0 0 AFFILIATED MANAGERS GROUP COM 008252108 27 300 SH 300 0 0 AGCO CORP COM 001084102 30 500 SH 500 0 0 AIR METHODS CORP COM PAR $.06 009128307 24 500 SH 500 0 0 AIRGAS INC COM 009363102 32 700 SH 700 0 0 AKAMAI TECHNOLOGIES INC COM 00971T101 11 400 SH 400 0 0 AKORN INC COM 009728106 22 4,600 SH 4,600 0 0 ALEXANDRIA REAL ESTATE EQ IN COM 015271109 19 200 SH 200 0 0 ALLETE INC COM NEW 018522300 23 600 SH 600 0 0 ALLIANCE IMAGING INC COM NEW 018606202 44 5,100 SH 5,100 0 0 AMDOCS LTD ORD G02602103 28 990 SH 990 0 0 AMERICAN MED SYS HLDGS INC NOTE 3.250% 7/0 02744MAA6 4,973 5,100,000 PRN 5,100,000 0 0 AMERICAN TOWER CORP CL A 029912201 20 500 SH 500 0 0 AMICAS INC COM 001712108 14 6,180 SH 6,180 0 0 AMYLIN PHARMACEUTICALS INC NOTE 3.000% 6/1 032346AF5 5,428 6,500,000 PRN 6,500,000 0 0 ANNALY CAP MGMT INC COM 035710409 23 1,500 SH 1,500 0 0 APPLE INC COM 037833100 29 200 SH 200 0 0 ASSURANT INC COM 04621X108 24 400 SH 400 0 0 ATS MED INC NOTE 6.000%10/1 002083AB9 2,621 3,000,000 PRN 3,000,000 0 0 AXIS CAPITAL HOLDINGS SHS G0692U109 20 600 SH 600 0 0 BELDEN INC COM 077454106 18 500 SH 500 0 0 BIGBAND NETWORKS INC COM 089750509 110 19,134 SH 19,134 0 0 BIOMARIN PHARMACEUTICAL INC COM 09061G101 60 1,700 SH 1,700 0 0 BIOMED REALTY TRUST INC COM 09063H107 33 1,400 SH 1,400 0 0 BJ SVCS CO COM 055482103 9 299 SH 299 0 0 BLACKROCK INC COM 09247X101 20 100 SH 100 0 0 BLOCKBUSTER INC CL A 093679108 426 130,540 SH 130,540 0 0 BOEING CO COM 097023105 112 1,500 SH 1,500 0 0 BORLAND SOFTWARE CORP COM 099849101 13 6,520 SH 6,520 0 0 CADENCE DESIGN SYSTEM INC NOTE 1.375%12/1 127387AD0 1,760 2,000,000 PRN 2,000,000 0 0 CALIFORNIA PIZZA KITCHEN INC COM 13054D109 33 2,500 SH 2,500 0 0 CAMERON INTERNATIONAL CORP NOTE 2.500% 6/1 13342BAB1 4,204 3,000,000 PRN 3,000,000 0 0 CARPENTER TECHNOLOGY CORP COM 144285103 22 400 SH 400 0 0 CAVCO INDS INC DEL COM 149568107 21 600 SH 600 0 0 CELLCOM ISRAEL LTD SHS M2196U109 22 700 SH 700 0 0 CENTERPLATE INC UNIT 99/99/9999 15200E204 25 2,500 SH 2,500 0 0 CENTRAL EUROPEAN DIST CORP NOTE 3.000% 3/1 153435AA0 2,123 2,000,000 PRN 2,000,000 0 0 CHARLOTTE RUSSE HLDG INC COM 161048103 434 25,000 SH 25,000 0 0 CHINA SEC & SURVE TECH INC COM 16942J105 27 1,500 SH 1,500 0 0 CHURCH & DWIGHT INC COM 171340102 22 400 SH 400 0 0 CIENA CORP NOTE 0.875% 6/1 171779AE1 1,913 2,000,000 PRN 2,000,000 0 0 CISCO SYS INC COM 17275R102 24 1,000 SH 1,000 0 0 CME GROUP INC COM 12572Q105 12 25 SH 25 0 0 COGNIZANT TECHNOLOGY SOLUTIO CL A 192446102 17 600 SH 600 0 0 COMMSCOPE INC COM 203372107 28 800 SH 800 0 0 COMPASS MINERALS INTL INC COM 20451N101 53 900 SH 900 0 0 CONMED CORP NOTE 2.500%11/1 207410AD3 930 1,000,000 PRN 1,000,000 0 0 CORE LABORATORIES LP NOTE 0.250%10/3 21868FAB9 6,148 4,500,000 PRN 4,500,000 0 0 CORE LABORATORIES N V COM N22717107 21 175 SH 175 0 0 CORRECTIONS CORP AMER NEW COM NEW 22025Y407 19 700 SH 700 0 0 CREE INC COM 225447101 210 7,522 SH 7,522 0 0 DARDEN RESTAURANTS INC COM 237194105 26 800 SH 800 0 0 DAVITA INC COM 23918K108 14 300 SH 300 0 0 DEXCOM INC COM 252131107 104 25,000 SH 25,000 0 0 DIGITAL RIV INC COM 25388B104 63 2,025 SH 2,025 0 0 DIODES INC NOTE 2.250%10/0 254543AA9 453 500,000 PRN 500,000 0 0 DOLAN MEDIA CO COM 25659P402 28 1,400 SH 1,400 0 0 DUPONT FABROS TECHNOLOGY INC COM 26613Q106 23 1,400 SH 1,400 0 0 EATON VANCE CORP COM NON VTG 278265103 9 300 SH 300 0 0 ENTERGY CORP NEW COM 29364G103 22 200 SH 200 0 0 EQUINIX INC NOTE 3.000%10/1 29444UAG1 1,833 2,000,000 PRN 2,000,000 0 0 EQUITABLE RES INC COM 294549100 47 800 SH 800 0 0 EURONET WORLDWIDE INC DBCV 1.625%12/1 298736AD1 2,081 2,290,000 PRN 2,290,000 0 0 EV3 INC COM 26928A200 122 15,000 SH 15,000 0 0 EXPEDITORS INTL WASH INC COM 302130109 18 400 SH 400 0 0 EXPRESS SCRIPTS INC COM 302182100 13 200 SH 200 0 0 F M C CORP COM NEW 302491303 53 950 SH 950 0 0 FACTSET RESH SYS INC COM 303075105 11 200 SH 200 0 0 FEI CO NOTE 2.875% 6/0 30241LAF6 1,381 1,386,000 PRN 1,386,000 0 0 FMC TECHNOLOGIES INC COM 30249U101 40 700 SH 700 0 0 GAMESTOP CORP NEW CL A 36467W109 52 1,000 SH 1,000 0 0 GENERAL CABLE CORP DEL NEW COM 369300108 35 600 SH 600 0 0 GIANT INTERACTIVE GROUP INC ADR 374511103 63 5,000 SH 5,000 0 0 GILDAN ACTIVEWEAR INC COM 375916103 19 500 SH 500 0 0 GREENHILL & CO INC COM 395259104 21 300 SH 300 0 0 HALLMARK FINL SVCS INC EC COM NEW 40624Q203 2 200 SH 200 0 0 HANSEN NAT CORP COM 411310105 11 300 SH 300 0 0 HCP INC COM 40414L109 24 700 SH 700 0 0 HOLOGIC INC COM 436440101 39 700 SH 700 0 0 HOLOGIC INC FRNT 2.000%12/1 436440AA9 3,004 3,125,000 PRN 3,125,000 0 0 HOME DEPOT INC COM 437076102 87 3,100 SH 3,100 0 0 HOME DIAGNOSTICS INC DEL COM 437080104 33 4,804 SH 4,804 0 0 ICONIX BRAND GROUP INC NOTE 1.875% 6/3 451055AB3 1,359 1,500,000 PRN 1,500,000 0 0 IDENIX PHARMACEUTICALS INC COM 45166R204 4 700 SH 700 0 0 IHS INC CL A 451734107 26 400 SH 400 0 0 ILLUMINA INC NOTE 0.625% 2/1 452327AB5 9,133 5,060,000 PRN 5,060,000 0 0 IMAX CORP COM 45245E109 8 1,100 SH 1,100 0 0 IMCLONE SYS INC COM 45245W109 1 16 SH 16 0 0 IMMUCOR INC COM 452526106 11 500 SH 500 0 0 INCYTE CORP COM 45337C102 30 2,900 SH 2,900 0 0 INFORMATICA CORP COM 45666Q102 853 50,000 SH PUT 50,000 0 0 INTERFACE INC CL A 458665106 8 600 SH 600 0 0 IPC THE HOSPITALIST CO INC COM 44984A105 1,014 51,269 SH 51,269 0 0 ITC HLDGS CORP COM 465685105 31 600 SH 600 0 0 ITRON INC COM 465741106 27 300 SH 300 0 0 JAMES RIVER COAL CO COM NEW 470355207 25 1,400 SH 1,400 0 0 JONES LANG LASALLE INC COM 48020Q107 15 200 SH 200 0 0 JOY GLOBAL INC COM 481165108 65 1,000 SH 1,000 0 0 JUNIPER NETWORKS INC NOTE 6/1 48203RAC8 7,568 6,000,000 PRN 6,000,000 0 0 KINDER MORGAN ENERGY PARTNER UT LTD PARTNER 494550106 22 400 SH 400 0 0 KINDER MORGAN MANAGEMENT LLC SHS 49455U100 20 400 SH 400 0 0 KINROSS GOLD CORP COM NO PAR 496902404 24 1,100 SH 1,100 0 0 L-3 COMMUNICATIONS HLDGS INC COM 502424104 33 300 SH 300 0 0 LABORATORY CORP AMER HLDGS COM NEW 50540R409 15 200 SH 200 0 0 LAMAR ADVERTISING CO CL A 512815101 7 200 SH 200 0 0 LAWSON SOFTWARE INC NEW NOTE 2.500% 4/1 52078PAA0 2,764 3,000,000 PRN 3,000,000 0 0 LDK SOLAR CO LTD SPONSORED ADR 50183L107 16 600 SH 600 0 0 LEAPFROG ENTERPRISES INC CL A 52186N106 18 2,500 SH 2,500 0 0 LHC GROUP INC COM 50187A107 12 700 SH 700 0 0 LIMITED BRANDS INC COM 532716107 86 5,000 SH 5,000 0 0 LINEAR TECHNOLOGY CORP COM 535678106 239 7,800 SH 7,800 0 0 LINEAR TECHNOLOGY CORP NOTE 3.125% 5/0 535678AD8 3,283 3,424,000 PRN 3,424,000 0 0 LKQ CORP COM 501889208 38 1,700 SH 1,700 0 0 LOGITECH INTL S A SHS H50430232 18 700 SH 700 0 0 MAGMA DESIGN AUTOMATION NOTE 2.000% 5/1 559181AC6 1,689 1,869,000 PRN 1,869,000 0 0 MASTERCARD INC CL A 57636Q104 22 100 SH 100 0 0 MCCORMICK & SCHMICKS SEAFD R COM 579793100 29 2,500 SH 2,500 0 0 MECHEL OAO SPONSORED ADR 583840103 23 200 SH 200 0 0 METABOLIX INC COM 591018809 58 5,300 SH 5,300 0 0 MICREL INC COM 594793101 25 2,700 SH 2,700 0 0 MICROCHIP TECHNOLOGY INC COM 595017104 13 400 SH 400 0 0 MICROS SYS INC COM 594901100 7 200 SH 200 0 0 MICROSOFT CORP COM 594918104 99 3,500 SH 3,500 0 0 MIDCAP SPDR TR UNIT SER 1 595635103 7 50 SH 50 0 0 MORNINGSTAR INC COM 617700109 6 100 SH 100 0 0 MORTONS RESTAURANT GRP INC N COM 619430101 20 2,500 SH 2,500 0 0 MOSAIC CO COM 61945A107 21 200 SH 200 0 0 NATIONAL CINEMEDIA INC COM 635309107 18 800 SH 800 0 0 NEW ORIENTAL ED & TECH GRP I SPON ADR 647581107 19 300 SH 300 0 0 NEWMONT MINING CORP COM 651639106 136 3,000 SH 3,000 0 0 NII HLDGS INC CL B NEW 62913F201 11 350 SH 350 0 0 NIKE INC CL B 654106103 20 300 SH 300 0 0 NMS COMMUNICATIONS CORP COM 629248105 90 60,000 SH 60,000 0 0 NORTHEAST UTILS COM 664397106 34 1,400 SH 1,400 0 0 NORTHWESTERN CORP COM NEW 668074305 10 400 SH 400 0 0 NYSE EURONEXT COM 629491101 3,421 55,440 SH 55,440 0 0 ODYSSEY HEALTHCARE INC COM 67611V101 2 250 SH 250 0 0 OIL STS INTL INC COM 678026105 9 200 SH 200 0 0 ON SEMICONDUCTOR CORP COM 682189105 568 100,000 SH PUT 100,000 0 0 ON SEMICONDUCTOR CORP NOTE 4/1 682189AE5 4,550 5,000,000 PRN 5,000,000 0 0 ONLINE RES CORP COM 68273G101 75 7,760 SH 7,760 0 0 ORASURE TECHNOLOGIES INC COM 68554V108 58 7,943 SH 7,943 0 0 ORIENTAL FINL GROUP INC COM 68618W100 24 1,200 SH 1,200 0 0 OSHKOSH CORP COM 688239201 44 1,200 SH 1,200 0 0 OSI PHARMACEUTICALS INC NOTE 2.000%12/1 671040AF0 355 250,000 PRN 250,000 0 0 PARKERVISION INC COM 701354102 5 600 SH 600 0 0 PARTNER COMMUNICATIONS CO LT ADR 70211M109 25 1,100 SH 1,100 0 0 PC MALL INC COM 69323K100 5 500 SH 500 0 0 PEGASYSTEMS INC COM 705573103 288 29,857 SH 29,857 0 0 PENGROWTH ENERGY TR TR UNIT NEW 706902509 25 1,300 SH 1,300 0 0 PEPSIAMERICAS INC COM 71343P200 77 3,000 SH 3,000 0 0 PERMIAN BASIN RTY TR UNIT BEN INT 714236106 24 1,100 SH 1,100 0 0 PERRIGO CO COM 714290103 53 1,400 SH 1,400 0 0 PETROLEUM DEV CORP COM 716578109 21 300 SH 300 0 0 PHASE FORWARD INC COM 71721R406 22 1,300 SH 1,300 0 0 PHOENIX TECHNOLOGY LTD COM 719153108 22 1,400 SH 1,400 0 0 POLO RALPH LAUREN CORP CL A 731572103 17 300 SH 300 0 0 POLYMET MINING CORP COM 731916102 32 10,000 SH 10,000 0 0 PRAXAIR INC COM 74005P104 17 200 SH 200 0 0 PROASSURANCE CORP COM 74267C106 27 500 SH 500 0 0 PROGENICS PHARMACEUTICALS IN COM 743187106 1 168 SH 168 0 0 PROSHARES TR ULTRASHRT O&G 74347R586 154 4,000 SH 4,000 0 0 PROSHARES TR ULTRA XIN CH25 74347R321 187 2,000 SH 2,000 0 0 PROSHARES TR BASIC MTRL PRO 74347R651 237 6,000 SH 6,000 0 0 PSYCHIATRIC SOLUTIONS INC COM 74439H108 14 400 SH 400 0 0 RESMED INC COM 761152107 21 494 SH 494 0 0 RICKS CABARET INTL INC COM NEW 765641303 27 1,200 SH 1,200 0 0 RUBIOS RESTAURANTS INC COM 78116B102 1 200 SH 200 0 0 SANDISK CORP NOTE 1.000% 5/1 80004CAC5 1,381 1,879,000 PRN 1,879,000 0 0 SAVIENT PHARMACEUTICALS INC COM 80517Q100 30 1,500 SH 1,500 0 0 SCHEIN HENRY INC NOTE 3.000% 8/1 806407AB8 2,971 2,195,000 PRN 2,195,000 0 0 SEACOR HOLDINGS INC COM 811904101 26 300 SH 300 0 0 SEARS HLDGS CORP COM 812350106 20 200 SH 200 0 0 SKILLSOFT PLC SPONSORED ADR 830928107 25 2,400 SH 2,400 0 0 SONIC INNOVATIONS INC COM 83545M109 30 6,311 SH 6,311 0 0 SONOSITE INC NOTE 3.750% 7/1 83568GAA2 1,014 1,000,000 PRN 1,000,000 0 0 SOTHEBYS COM 835898107 17 600 SH 600 0 0 SOUTHWESTERN ENERGY CO COM 845467109 27 800 SH 800 0 0 SPDR TR UNIT SER 1 78462F103 79 600 SH 600 0 0 SPECTRANETICS CORP COM 84760C107 34 4,021 SH 4,021 0 0 STARENT NETWORKS CORP COM 85528P108 153 11,338 SH 11,338 0 0 STERICYCLE INC COM 858912108 10 200 SH 200 0 0 SYNGENTA AG SPONSORED ADR 87160A100 64 1,100 SH 1,100 0 0 TCF FINL CORP COM 872275102 90 5,000 SH 5,000 0 0 TD AMERITRADE HLDG CORP COM 87236Y108 28 1,700 SH 1,700 0 0 TECHNE CORP COM 878377100 64 950 SH 950 0 0 TEMPUR PEDIC INTL INC COM 88023U101 9 800 SH 800 0 0 THERMO FISHER SCIENTIFIC INC COM 883556102 6 100 SH 100 0 0 TIFFANY & CO NEW COM 886547108 4 100 SH 100 0 0 TIME WARNER CABLE INC CL A 88732J108 25 1,000 SH 1,000 0 0 ULTA SALON COSMETCS & FRAG I COM 90384S303 1 100 SH 100 0 0 UNITEDHEALTH GROUP INC COM 91324P102 31 900 SH 900 0 0 URBAN OUTFITTERS INC COM 917047102 16 500 SH 500 0 0 US BANCORP DEL COM NEW 902973304 129 4,000 SH 4,000 0 0 VASCO DATA SEC INTL INC COM 92230Y104 8 600 SH 600 0 0 VCA ANTECH INC COM 918194101 16 600 SH 600 0 0 VERIFONE HLDGS INC COM 92342Y109 8 500 SH 500 0 0 VITAL SIGNS INC COM 928469105 8 157 SH 157 0 0 WARNER CHILCOTT LIMITED COM CL A G9435N108 29 1,600 SH 1,600 0 0 WASTE MGMT INC DEL COM 94106L109 338 10,081 SH 10,081 0 0 WEST PHARMACEUTICAL SVSC INC COM 955306105 27 600 SH 600 0 0 WILLIAMS PARTNERS L P COM UNIT L P 96950F104 22 700 SH 700 0 0 WISCONSIN ENERGY CORP COM 976657106 22 500 SH 500 0 0 WRIGLEY WM JR CO COM 982526105 25 400 SH 400 0 0 XTO ENERGY INC COM 98385X106 43 700 SH 700 0 0 YINGLI GREEN ENERGY HLDG CO ADR 98584B103 41 2,400 SH 2,400 0 0