-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, A4mJWMHIyG0Je1t8yatWIvN/0xbhzgIJLmghSYu+Rsl3a7U2b8EWcyfmaTSSoL5m PFsQoLGRJdOTiXJPS15wfg== 0001144204-08-029141.txt : 20080515 0001144204-08-029141.hdr.sgml : 20080515 20080515104146 ACCESSION NUMBER: 0001144204-08-029141 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20080331 FILED AS OF DATE: 20080515 DATE AS OF CHANGE: 20080515 EFFECTIVENESS DATE: 20080515 FILER: COMPANY DATA: COMPANY CONFORMED NAME: OBERWEIS ASSET MANAGEMENT INC/ CENTRAL INDEX KEY: 0000937886 IRS NUMBER: 364106772 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-04688 FILM NUMBER: 08834650 BUSINESS ADDRESS: STREET 1: 3333 WARRENVILLE ROAD STREET 2: SUITE 500 CITY: LISLE STATE: IL ZIP: 60532 BUSINESS PHONE: 6305772300 MAIL ADDRESS: STREET 1: 3333 WARRENVILLE ROAD STREET 2: SUITE 500 CITY: LISLE STATE: IL ZIP: 60532 13F-HR 1 v114318_13fhr.txt 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: Oberweis Asset Management, Inc. Address: 3333 Warrenville Road, Suite 500 Lisle, IL 60532 Form 13F File Number: 28- 4688 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: Patrick B. Joyce Title: Executive Vice President Phone: (800) 323-6166 Signature, Place, and Date of Signing: Patrick B. Joyce Lisle, IL May 14, 2008 - ------------------------ ------------------------ ------------------- [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: ______________ Form 13F Information Table Entry Total: 207 Data Records Form 13F Information Table Value Total: $1,188,129 (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 manger filing this report. [If there are no entries in this list, state "NONE" and omit the column headings and list entries.] NONE
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 - ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- Accuray Inc. com 004397105 5852 749279 SH SOLE 368500 380779 Acme Packet Inc. com 004764106 5757 720539 SH SOLE 365821 354718 Advanced Analogic Technologies com 00752J108 144 23300 SH SOLE 23300 Aehr Test Systems com 00760J108 476 56300 SH SOLE 35100 21200 Airmedia Group Inc-ADR com 009411109 6502 408900 SH SOLE 408900 Alliance Bankshares Corp. com 018535104 147 28100 SH SOLE 11500 16600 Alliance Fiber Optic Products com 018680108 366 283900 SH SOLE 175300 108600 Allis Chalmers Energy com 019645506 2893 209800 SH SOLE 125600 84200 Allscripts Healthcare com 01988P108 3335 323131 SH SOLE 164723 158408 Almost Family, Inc. com 020409108 3096 155500 SH SOLE 94300 61200 American Caresource Holdings I com 02505A103 2112 603450 SH SOLE 320400 283050 American Xtal Technology com 00246W103 3591 752900 SH SOLE 453100 299800 Anadigics, Inc. com 032515108 6637 1011695 SH SOLE 547000 464695 Ansys, Inc. com 03662Q105 345 10000 SH SOLE 6700 3300 Appliance Recycling Ctrs AMR com 03814F205 933 190100 SH SOLE 118000 72100 Arcsight, Inc. com 039666102 4413 638600 SH SOLE 331100 307500 Arena Resources, Inc. com 040049108 18058 466503 SH SOLE 243900 222603 Astronics Corp com 046433108 2560 132500 SH SOLE 80800 51700 Ata Inc. com 00211V106 2381 268700 SH SOLE 268700 Atheros Communications com 04743P108 16443 788988 SH SOLE 319300 469688 Authentec Inc. com 052660107 4562 459000 SH SOLE 245500 213500 Axsys Technologies, Inc. com 054615109 6898 138290 SH SOLE 71390 66900 BE Aerospace com 073302101 5613 160600 SH SOLE 61400 99200 BJ's Restaurant Inc com 09180c106 11933 828100 SH SOLE 425600 402500 Baidu Inc. Spon ADR com 056752108 20593 85937 SH SOLE 63377 22560 Bidz.Com, Inc. com 08883T200 3230 385400 SH SOLE 235900 149500 Bitstream, Inc. com 091736108 234 41865 SH SOLE 26000 15865 Bolt Technology Corp. com 097698104 4480 243075 SH SOLE 160800 82275 Bucyrus Int'l Inc. com 118759109 234 2300 SH SOLE 1500 800 CRM Holdings Ltd. com G2554P103 2466 481600 SH SOLE 292900 188700 CTRIP Com Int'l Ltd ADR com 22943f100 15118 285131 SH SOLE 282300 2831 Caraco Pharm Labs com 14075T107 6187 344700 SH SOLE 177700 167000 Carrizo Oil & Company, Inc. com 144577103 32055 540836 SH SOLE 284090 256746 Catalyst Semiconductor Inc. com 148881105 2693 490500 SH SOLE 303200 187300 Cavium Networks, Inc. com 14965A101 2757 168100 SH SOLE 86900 81200 Central European Distribution com 153435102 19903 342030 SH SOLE 181851 160179 Century Casinos Inc. com 156492100 337 103900 SH SOLE 64600 39300 Ceragon Networks ADR com M22013102 6685 707370 SH SOLE 465700 241670 Chart Industries Inc. com 16115Q308 389 11500 SH SOLE 7700 3800 Chicago Bridge and Iron com 167250109 1515 38600 SH SOLE 34200 4400 China Digital TV Holding-ADR com 16938G107 6927 371600 SH SOLE 371600 Chipotle Mexican Grill com 169656105 6000 52900 SH SOLE 9500 43400 Chyron Corp. com 171605306 1598 307300 SH SOLE 189100 118200 Ciena Corporation com 171779309 385 12500 SH SOLE 8400 4100 Cisco Systems, Inc. com 17275r102 257 10652 SH SOLE 10652 Clean Diesel Technologies, Inc com 18449C302 893 68300 SH SOLE 42500 25800 Clicksoftware Technologies Ltd com M25082104 2992 1021300 SH SOLE 613600 407700 ComScore Inc. com 20564W105 6072 302700 SH SOLE 156700 146000 Commtouch Software Ltd. com M25596202 1475 358798 SH SOLE 265732 93066 Commvault Systems, Inc. com 204166102 345 27800 SH SOLE 18700 9100 Concur Technologies com 206708109 11635 374717 SH SOLE 190425 184292 Cubist Pharmaceutica com 229678107 5246 284800 SH SOLE 16800 268000 Cybersource Corp com 23251J106 24789 1696699 SH SOLE 786646 910053 Cynosure Inc. com 232577205 9361 439500 SH SOLE 241400 198100 Dawson Geophysical Co com 239359102 14669 217320 SH SOLE 122810 94510 Dealertrack Holdings com 242309102 7296 360822 SH SOLE 187322 173500 Deckers Outdoor Corp com 243537107 1553 14400 SH SOLE 13000 1400 Dice Holdings Inc. com 253017107 3829 429700 SH SOLE 222600 207100 Double-Take Software com 258598101 14469 1238820 SH SOLE 669050 569770 Dril Quip Inc com 262037104 9580 206162 SH SOLE 105776 100386 Dynamic Materials Corp. com 267888105 18919 437936 SH SOLE 249213 188723 E-House China Holdings-ADS com 26852W103 4293 326500 SH SOLE 326500 Ebix Inc. com 278715206 3996 54000 SH SOLE 33200 20800 Edgewater Tech com 280358102 114 21600 SH SOLE 10600 11000 Ehealth Inc. com 28238P109 17301 783911 SH SOLE 397300 386611 Enersys com 29275Y102 227 9500 SH SOLE 6400 3100 Exlservice Holdings com 302081104 16233 707000 SH SOLE 393000 314000 Falconstor Software com 306137100 11203 1472153 SH SOLE 774071 698082 Female Health Company com 314462102 1456 596800 SH SOLE 369100 227700 Flir Systems, Inc. com 302445101 6900 229300 SH SOLE 75900 153400 Flotek Inds Inc. com 343389102 6156 421942 SH SOLE 222355 199587 Focus Media Hldg Ltd ADR com 34415V109 40496 1152095 SH SOLE 784356 367739 Fuel Tech Inc. com 359523107 2723 132850 SH SOLE 75100 57750 GMX Resources Inc com 38011M108 3912 111991 SH SOLE 69503 42488 GMarket Inc ADR com 38012G100 12541 585465 SH SOLE 298400 287065 GP Strategies Corp. com 36225V104 3222 339200 SH SOLE 240400 98800 GSE Systems com 36227K106 2203 270700 SH SOLE 165100 105600 GameStop Corp. com 36467W109 646 12500 SH SOLE 8400 4100 General Electric Co. com 369604103 494 13348 SH SOLE 13348 Genoptix Inc. com 37243V100 7178 287000 SH SOLE 150500 136500 Geokinetics Inc. com 372910307 3347 184700 SH SOLE 112600 72100 Global Traffic Network Inc. com 37947B103 1071 122300 SH SOLE 75800 46500 Globalscape Inc. com 37940G109 667 303100 SH SOLE 187300 115800 Globecom Systems Inc com 37956X103 3673 422200 SH SOLE 217100 205100 Graham Corp. com 384556106 2503 70325 SH SOLE 43675 26650 Guess Inc com 401617105 8098 200110 SH SOLE 69660 130450 Guidance Software com 401692108 1032 115300 SH SOLE 71300 44000 Gulfport Energy Corp. com 402635304 4951 467115 SH SOLE 241715 225400 Gushan Environmental Spons ADR com 40330W106 3196 244500 SH SOLE 244500 Healthextras, Inc. com 422211102 11185 450267 SH SOLE 232912 217355 Hologic Inc com 436440101 1863 33500 SH SOLE 29500 4000 Home Inns & Hotels Mgmt com 43713W107 4503 228700 SH SOLE 224600 4100 Hurco Companies, Inc. com 447324104 4508 96373 SH SOLE 70617 25756 ICF International Inc. com 44925C103 4403 219600 SH SOLE 148200 71400 IPC The Hospitalist Co. com 44984A105 222 11200 SH SOLE 6900 4300 IPG Photonics Corp com 44980X109 9070 578100 SH SOLE 300800 277300 Icon Plc Corp ADR com 45103T107 1460 22500 SH SOLE 7400 15100 Iconix Brand Group, Inc. com 451055107 10963 631850 SH SOLE 328550 303300 Illumina Inc com 452327109 18713 246542 SH SOLE 86012 160530 InVentiv Health Inc com 46122E105 5374 186532 SH SOLE 95592 90940 Innerworkings, Inc. com 45773Y105 21779 1552317 SH SOLE 740350 811967 Innodata Isogen, Inc. com 457642205 1344 314800 SH SOLE 195400 119400 Insweb Corp. com 45809K202 1091 101700 SH SOLE 63100 38600 Intel Corporation com 458140100 292 13770 SH SOLE 13770 Interactive Intelligence Inc. com 45839M103 8327 707487 SH SOLE 401700 305787 Internet Gold Golden Lines Ltd com M56595107 1550 190200 SH SOLE 145400 44800 Intuitive Surgical, Inc. com 46120E602 7241 22326 SH SOLE 5810 16516 K-Tron International, Inc. com 482730108 1441 12000 SH SOLE 7400 4600 KMG Chemicals, Inc. com 482564101 2117 137209 SH SOLE 85000 52209 Kenexa Corporation com 488879107 13684 740454 SH SOLE 408058 332396 LMI Aerospace Inc com 502079106 1482 76500 SH SOLE 47500 29000 LSB Industries, Inc. com 502160104 1540 104460 SH SOLE 64800 39660 Life Partners Holdings Inc. com 53215T106 6014 325960 SH SOLE 161900 164060 Lifecell Corp. com 531927101 7359 175100 SH SOLE 90500 84600 Liquidity Services, Inc. com 53635B107 4357 544600 SH SOLE 281200 263400 Longtop Financial Techno-ADR com 54318P108 6225 329725 SH SOLE 329725 Lululemon Athletica Inc. com 550021109 4191 147400 SH SOLE 87800 59600 Mantech Intl Corp com 564563104 218 4800 SH SOLE 3200 1600 Mcdonald's com 580135101 218 3900 SH SOLE 3900 Mellanox Technologies Ltd. com M51363113 6154 441800 SH SOLE 231300 210500 Memc Electronic Materials, Inc com 552715104 295 4160 SH SOLE 4160 Memsic Inc. com 586264103 829 138000 SH SOLE 85700 52300 Microsoft Corp. com 594918104 493 17360 SH SOLE 17360 Mindray Medical Intl com 602675100 8378 289500 SH SOLE 289500 NASDAQ Stk Mkt com 631103108 321 8300 SH SOLE 5500 2800 NCI Inc-Class A com 62886K104 3525 185600 SH SOLE 115100 70500 NVE Corp. com 629445206 3824 154800 SH SOLE 95700 59100 Natus Med Inc com 639050103 8897 490217 SH SOLE 253417 236800 Netlogic Microsystems com 64118B100 14134 585500 SH SOLE 248100 337400 Netsol Technologies, Inc. com 64115A204 56 28200 SH SOLE 17500 10700 Network Equipment Technologies com 641208103 2007 305500 SH SOLE 184700 120800 New Oriental Education com 647581107 7101 109489 SH SOLE 107600 1889 Nighthawk Radiology Holdings, com 65411n105 7717 824514 SH SOLE 436404 388110 Nuance Communications, Inc. com 67020Y100 2505 143900 SH SOLE 125500 18400 Numerex Corp. com 67053A102 984 140600 SH SOLE 86300 54300 O2 Micro Int'l com 67107W100 10334 1336907 SH SOLE 690930 645977 Obagi Medical Products, Inc com 67423R108 6459 744140 SH SOLE 368380 375760 Oceaneering Int'l Inc. com 675232102 2287 36300 SH SOLE 32900 3400 Omniture Inc. com 68212S109 5190 223600 SH SOLE 12400 211200 Omrix Pharmaceuticals com 681989109 13497 964062 SH SOLE 419697 544365 Opnext Inc. com 68375V105 157 31100 SH SOLE 31100 Orion Energy Systems Inc. com 686275108 8197 859244 SH SOLE 456600 402644 Paragon Technologies com 69912T108 454 84500 SH SOLE 52400 32100 Peerless Mfg. Co. com 705514107 723 22300 SH SOLE 14100 8200 Perceptron Inc. com 71361F100 4153 327800 SH SOLE 220800 107000 Perfect World ADR com 71372U104 4258 187500 SH SOLE 185700 1800 Perficient Inc. com 71375U101 7531 948523 SH SOLE 514370 434153 Phase Forward com 71721R406 446 26100 SH SOLE 17600 8500 Phoenix Technology com 719153108 13407 856117 SH SOLE 453700 402417 Pinnacle Financial Partners In com 72346Q104 3948 154200 SH SOLE 79200 75000 Priceline.com com 741503403 10857 89830 SH SOLE 25470 64360 Pros Holdings, Inc. com 74346Y103 7423 591500 SH SOLE 305200 286300 Rainmaker Systems, Inc com 750875304 796 245000 SH SOLE 151247 93753 Ramtron Intl Corp com 751907304 1672 407700 SH SOLE 253100 154600 Repligen Corp com 759916109 3729 773700 SH SOLE 478300 295400 Riverbed Technology, Inc. com 768573107 188 12630 SH SOLE 12630 Rrsat Global Communications com M8183P102 1511 99520 SH SOLE 81600 17920 Sani Tech Industry Inc. com 801017104 0 11000 SH SOLE 11000 Sapient Corporation com 803062108 10566 1518157 SH SOLE 841660 676497 Sciele Pharmaceutical com 808627103 12532 642645 SH SOLE 333919 308726 ShoreTel com 825211105 67 13000 SH SOLE 13000 Sierra Wireless, Inc. com 826516106 10000 626990 SH SOLE 325090 301900 Sigma Designs, Inc. com 826565103 18872 832460 SH SOLE 474605 357855 Silicom Ltd. com M84116108 3312 238800 SH SOLE 152300 86500 Silver State Bancorp com 828251108 1510 174420 SH SOLE 108450 65970 Silverstar Holding, Ltd. com G81365101 1576 1382600 SH SOLE 854300 528300 Simulations Plus Inc. com 829214105 1897 1019800 SH SOLE 619500 400300 Sohu.Com, Inc. com 83408W103 7947 176100 SH SOLE 174400 1700 Somanetics Corp. com 834445405 1630 104675 SH SOLE 64972 39703 Spartan Motors, Inc. com 846819100 7337 867256 SH SOLE 424400 442856 Spreadtrum Communications com 849415203 287 33030 SH SOLE 33030 Standard & Poor's Depository R com 78462F103 238 1800 SH SOLE 1800 Stanley Inc. com 854532108 23432 795385 SH SOLE 284300 511085 Starent Networks Corp. com 85528P108 5148 381300 SH SOLE 197400 183900 Suntech Power Holding ADR com 86800C104 2129 52500 SH SOLE 52500 Superior Energy Svcs com 868157108 1775 44800 SH SOLE 39900 4900 Synaptics, Inc. com 87157D109 20117 842415 SH SOLE 385090 457325 Synchronoss Technologies Inc. com 87157B103 13894 693670 SH SOLE 363870 329800 Synovis Life Technologies, Inc com 87162G105 4489 286300 SH SOLE 177700 108600 T 3 Energy Services, Inc. com 87306E107 14449 339500 SH SOLE 201800 137700 TXCO Resources, Inc. com 87311M102 639 51600 SH SOLE 26600 25000 Taleo Corp. com 87424N104 5894 303800 SH SOLE 156000 147800 Team Inc. com 878155100 3372 123500 SH SOLE 63800 59700 Telular Corp. com 87970T208 1570 470090 SH SOLE 307675 162415 Thestreet.com, Inc. com 88368Q103 893 110500 SH SOLE 67700 42800 Transcend Services, Inc. com 893929208 2228 244350 SH SOLE 139700 104650 UTD Therapeutics Corp com 91307C102 1888 21780 SH SOLE 11570 10210 Ulta Salon Cosmetics & Fragr com 90384S303 1181 84100 SH SOLE 74200 9900 Ultimate Software Group, Inc. com 90385D107 6322 210300 SH SOLE 108100 102200 Ultralife Batteries, Inc. com 903899102 4296 363780 SH SOLE 245500 118280 VSE Corp com 918284100 1683 59600 SH SOLE 37000 22600 Valueclick, Inc. com 92046N102 9040 524053 SH SOLE 291172 232881 Vanceinfo Technologies com 921564100 5403 794500 SH SOLE 794500 Vasco Data Sec com 92230Y104 12678 926750 SH SOLE 476666 450084 Versar Inc. com 925297103 1501 239800 SH SOLE 146900 92900 Vicon Industries, Inc. com 925811101 625 125000 SH SOLE 76500 48500 Virtual Radiologic Corp. com 92826B104 7116 465700 SH SOLE 246100 219600 Visionchina Media Inc-ADS com 92833U103 9189 829300 SH SOLE 829300 Vocus Inc. com 92858J108 4456 168800 SH SOLE 105000 63800 Volcom Inc. com 92864N101 7092 350900 SH SOLE 181277 169623 Walgreen Company com 931422109 331 8700 SH SOLE 8700 Warren Resources, Inc. com 93564A100 9231 777710 SH SOLE 396300 381410 Website Pros Inc com 94769V105 2216 225400 SH SOLE 139900 85500 Willbros Group, Inc. com 969199108 18650 609493 SH SOLE 267020 342473 Wimm-Bill-Dann Foods ADR com 97263M109 512 5000 SH SOLE 5000 Wuxi Pharmatech Inc-ADR com 929352102 5543 247900 SH SOLE 247900 Zoltek Companies Inc. com 98975W104 12160 458522 SH SOLE 253717 204805
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