13F-HR 1 d13ftable123108.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F Report for the Calendar Year of Quarter Ended: June 30, 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: Disciplined Growth Investors, Inc. Address:100 South Fifth Street Suite 2100 Minneapolis, MN 55402 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: Peter G. Rieke Title: CCO Phone: 612-317-4108 Signature, Place, and Date of Signing: Peter G. Rieke Minneapolis, MN February 17, 2009 Report Type (Check only one): [X] 13F HOLDINGS REPORT [ ] 13F NOTICE [ ] 13F COMBINATION REPORT. List of other Managers Reporting for this Manager: I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934. FORM 13F SUMMARY PAGE Report Summary: Number of other included Managers: 0 Form 13F Information Table Entry Total: 95 Form 13F Information Table Value Total: $828136 FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 3M CO COM 88579Y101 270 4684 SH SOLE 4684 ADOBE SYS INC COM COM 00724F101 30688 1441443 SH SOLE 1187743 253700 ADVANCED LIFE SCIENCES HLDGSIN COM 00765H107 354 983368 SH SOLE 885268 98100 ADVANCED MICRO DEVICES INC COM COM 007903107 2503 1159025 SH SOLE 947825 211200 ADVENT SOFTWARE INC. COM 007974108 2015 100900 SH SOLE 92100 8800 AKAMAI TECHNOLOGIES COM COM 00971T101 6805 450975 SH SOLE 370125 80850 ALIGN TECHNOLOGY INC COM COM 016255101 2757 315075 SH SOLE 310875 4200 ALLSTATE CORP COM COM 020002101 373 11400 SH SOLE 11400 AMERIGON INC CL A COM 03070L300 3268 1002400 SH SOLE 913300 89100 APPLE INC COM COM 037833100 13554 158803 SH SOLE 132053 26750 ARM HOLDINGS PLC SPONS ADR COM 042068106 21418 5563021 SH SOLE 4673646 889375 ARUBA NETWORKS INC COM COM 043176106 2656 1041675 SH SOLE 943375 98300 AWARE INC MASS COM 05453N100 153 81852 SH SOLE 81852 BJ SVCS CO COM COM 055482103 7911 677920 SH SOLE 547420 130500 BOTTOMLINE TECHNOLOGIES DELINC COM 101388106 3153 444020 SH SOLE 405920 38100 CABELAS INC COM COM 126804301 8736 1498380 SH SOLE 1256330 242050 CBEYOND INCCOM COM 149847105 2614 163600 SH SOLE 150000 13600 CERADYNE INC CALIF COM 156710105 5418 266775 SH SOLE 246375 20400 CEVA INCCOM COM 157210105 5021 717344 SH SOLE 679444 37900 CHEESECAKE FACTORY INC COM COM 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77978 GARMIN LTD COM COM G37260109 13606 709750 SH SOLE 596700 113050 GENTEX CORP COM COM 371901109 6492 735200 SH SOLE 612450 122750 GENZYME CORP GENL DIVISION COM COM 372917104 9915 149389 SH SOLE 113487 35902 HARRIS STRATEX NETWORKS INC CO COM 41457P106 9041 1752156 SH SOLE 1501156 251000 HELIX ENERGY SOLUTIONS GROUP I COM 42330P107 1338 184793 SH SOLE 131193 53600 HONEYWELL INTERNATIONAL INC CO COM 438516106 725 22074 SH SOLE 22074 IMATION CORP COM COM 45245A107 7840 577750 SH SOLE 513175 64575 IMPERIAL SUGAR CO NEW COM NEW COM 453096208 2769 193121 SH SOLE 172621 20500 INCYTE CORPORATION COM COM 45337C102 2624 692375 SH SOLE 486575 205800 INTUIT COM COM 461202103 39322 1652875 SH SOLE 1373575 279300 INVESTMENT TECH GRP COM NEW COM 46145F105 4911 216137 SH SOLE 192537 23600 IRIS INTL INCCOM COM 46270W105 4949 355020 SH SOLE 326920 28100 ISHARES TR RUSL 2000 GROW COM 464287648 280 5500 SH SOLE 5500 ISHARES TR RUSSELL MCP GR COM 464287481 1525 48745 SH SOLE 48745 JANUS CAPITAL GROUP INC COM COM 47102X105 10073 1254370 SH SOLE 1020570 233800 JETBLUE AIRWAYS CORP COM COM 477143101 6850 964750 SH SOLE 783750 181000 LANDSTAR SYS INC COM COM 515098101 19300 502200 SH SOLE 413650 88550 LEAPFROG ENTERPRISES INC CL A COM 52186N106 2066 590325 SH SOLE 538225 52100 LEVEL 3 COMMUNICATIONS INC COM COM 52729N100 2429 3470517 SH SOLE 2812917 657600 LIMITED BRANDS COM COM 532716107 11479 1143286 SH SOLE 935611 207675 LINCOLN NATL CORP IND COM COM 534187109 13815 733269 SH SOLE 628352 104917 MERCURY COMPUTER SYS INC COM COM 589378108 1781 282225 SH SOLE 258525 23700 MIDDLEBYCORP COM 596278101 7150 262175 SH SOLE 221250 40925 NAUTILUS INCCOM COM 63910B102 1955 884718 SH SOLE 812118 72600 NOBLE CORP COM COM G65422100 9059 410077 SH SOLE 328077 82000 NUTRI SYSTEM INC COM COM 67069D108 7479 512645 SH SOLE 438020 74625 OPEN TEXT CORP COM COM 683715106 45044 1494982 SH SOLE 1298982 196000 PACTIV CORP COM COM 695257105 17673 710340 SH SOLE 581540 128800 PALOMAR MED TECH INC NEW COM COM 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STRATASYS INC COM 862685104 3819 355234 SH SOLE 328034 27200 SUN MICROSYSTEMS INC COM COM 866810203 911 238430 SH SOLE 147155 91275 SURMODICS INC COM COM 868873100 4945 195677 SH SOLE 176877 18800 SYBASE INC COM COM 871130100 39677 1601824 SH SOLE 1339349 262475 SYNAPTICS INCCOM COM 87157D109 8135 491221 SH SOLE 451121 40100 TEXAS INSTRUMENTS INC COM COM 882508104 1762 113558 SH SOLE 113058 500 TJX COS INC NEW COM COM 872540109 27520 1337865 SH SOLE 1077415 260450 TRIMBLE NAVIGATION LTD COM COM 896239100 33162 1534587 SH SOLE 1318362 216225 TW TELECOM, INC. COM 87311L104 16078 1898186 SH SOLE 1663186 235000 VALUEVISION MEDIA INCCOM SHS COM 92047K107 74 222856 SH SOLE 222856 VARIAN MEDICAL SYSTEMS INC COM COM 92220P105 9209 262825 SH SOLE 213425 49400 VASCO DATA SEC INTL INC COM COM 92230Y104 4727 457581 SH SOLE 415881 41700 VIASAT INC COM COM 92552V100 3025 125625 SH SOLE 115475 10150 VIROPHARMA INC COM COM 928241108 17045 1309175 SH SOLE 1246275 62900 XTO ENERGY INC COM COM 98385X106 9656 273762 SH SOLE 223285 50477 YAHOO! INC COM COM 984332106 24020 1968875 SH SOLE 1668925 299950 ISHARES MSCI JAPAN INDEX FD 464286848 321 33550.0000SH SOLE 33050.0000 500.0000 VANGUARD MNY MKT RESVS PRIME P 922090620 55 55122.8700SH SOLE 55122.8700