-----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, KAYfKlna+fux0YLuIsFCtF/3M2UNnAntL8eEsos6j6mTm2razXOqHjIQYfPljq0S yBJmr9BuMvBVJ8u6XiqAdQ== 0001144204-11-008340.txt : 20110214 0001144204-11-008340.hdr.sgml : 20110214 20110214151131 ACCESSION NUMBER: 0001144204-11-008340 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20101231 FILED AS OF DATE: 20110214 DATE AS OF CHANGE: 20110214 EFFECTIVENESS DATE: 20110214 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: 11606742 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 v211405_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: December 31, 2010 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: /s/ Patrick B. Joyce Lisle, IL February 14, 2011 - ------------------------ ------------------------ ------------------- [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: 211 Data Records Form 13F Information Table Value Total: $510,693 (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 - ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 3-D Systems Corporation com 88554D205 2047 65000 SH Sole 50900 14100 3SBio Inc ADR com 88575Y105 2901 191109 SH Sole 191109 51Job Inc. ADR com 316827104 8293 168380 SH Sole 157700 10680 Acacia Research-Acacia Tech com 003881307 19439 749390 SH Sole 629660 119730 Acme Packet, Inc. com 004764106 3388 63740 SH Sole 41690 22050 Active Power, Inc. com 00504W100 4068 1653500 SH Sole 1626700 26800 AdCare Health Systems, Inc. com 00650W300 1065 268355 SH Sole 268355 Adept Technology, Inc. com 006854202 699 155400 SH Sole 155400 Advanced Energy Industry, Inc. com 007973100 1345 98600 SH Sole 76600 22000 Akorn Inc. com 009728106 61 10000 SH Sole 10000 Align Technology, Inc. com 016255101 1403 71800 SH Sole 56100 15700 Alliance Fiber Optic Products com 018680306 1314 83800 SH Sole 83800 Almost Family, Inc. com 020409108 1729 45000 SH Sole 45000 Alpha & Omega Semiconductor com G6331P104 128 10000 SH Sole 7800 2200 Ambow Education Holding ADR com 02322P101 3775 271200 SH Sole 271200 Ameresco, Inc. com 02361E108 987 68700 SH Sole 54400 14300 American Science & Engr., Inc. com 029429107 1679 19700 SH Sole 15300 4400 American Superconductor com 030111108 5482 191762 SH Sole 136550 55212 American Xtal Technology com 00246W103 3060 293100 SH Sole 293100 Amerigon, Inc. com 03070L300 6933 637205 SH Sole 570900 66305 Amgen, Inc. com 031162100 222 4035 SH Sole 4035 Amtech Systems, Inc. com 032332504 3708 147440 SH Sole 112200 35240 Ancestry.com, Inc. com 032803108 1070 37800 SH Sole 29500 8300 Aruba Networks Inc. com 043176106 4652 222800 SH Sole 144600 78200 AsiaInfo-Linkage, Inc. com 04518A104 2071 125000 SH Sole 115100 9900 Autonavi Holdings Ltd. ADR com 05330F106 2193 136800 SH Sole 136800 Axcelis Technologies com 054540109 1442 416900 SH Sole 416900 BHP Billiton Ltd. ADR com 088606108 417 4488 SH Sole 4488 Baidu Inc. Spon ADR com 056752108 328 3400 SH Sole 3400 Barrett Bill Corp. com 06846N104 1123 27300 SH Sole 21300 6000 Bel Fuse, Inc. com 077347300 934 39100 SH Sole 39100 Blackboard com 091935502 2040 49400 SH Sole 38800 10600 Bofi Holding, Inc. com 05566U108 4713 303853 SH Sole 262833 41020 Brooks Automation Inc. com 114340102 1005 110800 SH Sole 87700 23100 Brush Engineered Materials com 117421107 3893 100760 SH Sole 68100 32660 Bsquare Corp. com 11776U300 3684 421040 SH Sole 315500 105540 CPI Aerostructures, Inc. com 125919308 2218 157535 SH Sole 157535 CTRIP Com Int'l Ltd ADR com 22943F100 1772 43800 SH Sole 41800 2000 Cardinal Finl Corp. com 14149F109 2043 175700 SH Sole 174000 1700 Carrizo Oil & Gas, Inc. com 144577103 5766 167178 SH Sole 113164 54014 Cavium Networks, Inc. com 14965A101 1873 49700 SH Sole 39200 10500 Ceragon Networks ADR com M22013102 1136 86200 SH Sole 86200 Changyou.com Ltd. ADR com 15911M107 1111 38975 SH Sole 38975 Charm Communications, Inc. com 16112R101 3422 347100 SH Sole 347100 Chase Corp. com 16150R104 999 61300 SH Sole 61300 China Digital TV Holding ADR com 16938G107 2374 334800 SH Sole 334800 China Kanghui Holding ADR com 16890V100 1579 85290 SH Sole 84300 990 China Marine Food Group Ltd. com 16943R106 1832 339300 SH Sole 339300 China Ming Yang Wind Pow ADS com 16951c108 5828 506800 SH Sole 506800 China Nuokang Bio-Ph-Sp ADR com 16949B113 454 119800 SH Sole 119800 China Valves Technology, Inc. com 169476207 3753 358118 SH Sole 358118 China XD Plastics Co. Ltd com 16948F107 2302 423941 SH Sole 423941 Chinacast Education Corp. com 16946T109 2413 311000 SH Sole 311000 Cirrus Logic com 172755100 1654 103500 SH Sole 83200 20300 Citigroup Incorporated com 172967101 78 16400 SH Sole 16400 ClearOne Communications, Inc. com 185060100 75 20200 SH Sole 20200 Clicksoftware Technologies Ltd com M25082104 1527 198300 SH Sole 198300 Coca-Cola com 191216100 263 3997 SH Sole 3997 Cognex Corp. com 192422103 4304 146308 SH Sole 95660 50648 Cohu, Inc. com 192576106 739 44600 SH Sole 44600 Concord Medical Spon ADR com 206277105 3366 455500 SH Sole 455500 Conmed Healthcare Management com 20741M103 887 290700 SH Sole 290700 Constant Contact, Inc. com 210313102 3613 116580 SH Sole 73500 43080 DRI Corp. com 23330F109 51 44700 SH Sole 44700 Danvers Bancorp, Inc. com 236442109 2180 123358 SH Sole 120208 3150 Datalink Corp. com 237934104 598 128000 SH Sole 128000 Digimarc Corp. com 25381B101 2674 89100 SH Sole 89100 Egain Communications Corp. com 28225C806 170 125600 SH Sole 125600 Electro Rent Corp. com 285218103 1021 63200 SH Sole 63200 Endologix, Inc. com 29266S106 1943 271800 SH Sole 271800 Entropic Communications, Inc. com 29384R105 5477 453400 SH Sole 453400 Exlservice Holdings com 302081104 2240 104300 SH Sole 81100 23200 Faro Technologies, Inc. com 311642102 2824 86000 SH Sole 67100 18900 Female Health Company com 314462102 1083 190400 SH Sole 190400 First Savings Financial Group, com 33621E109 552 37800 SH Sole 37800 G III Apparel Group Ltd. com 36237H101 11220 319200 SH Sole 290900 28300 GLG Life Tech Corporation com 361793201 1086 100000 SH Sole 100000 GSE Systems com 36227K106 1744 481700 SH Sole 481100 600 GSI Technology, Inc. com 36241U106 1857 229200 SH Sole 229200 General Electric Co. com 369604103 307 16776 SH Sole 16776 Geoeye, Inc. com 37250W108 2649 62500 SH Sole 48500 14000 Georesources, Inc. com 372476101 4682 210800 SH Sole 209600 1200 Global Education & Tech ADR com 37951A108 2647 277450 SH Sole 271700 5750 Globecom Systems Inc com 37956X103 1245 124500 SH Sole 124500 Grand Canyon Education, Inc. com 38526M106 1752 89426 SH Sole 70726 18700 Green Mtn Coffee com 393122106 3460 105300 SH Sole 70840 34460 Gulf Resources, Inc. com 40251W309 2852 266800 SH Sole 266800 Gulfport Energy Corp. com 402635304 1930 89000 SH Sole 69500 19500 HHGregg, Inc. com 42833L108 771 36800 SH Sole 28700 8100 HMS Holdings Corp. com 40425J101 3585 55350 SH Sole 42300 13050 Hackett Group, Inc. com 404609109 793 226000 SH Sole 226000 Herley Industries, Inc. com 427398102 5227 301800 SH Sole 301800 Hi-Tech Pharmacal com 42840B101 3363 134800 SH Sole 134800 Higher One Holdings, Inc. com 42983D104 4057 200520 SH Sole 142300 58220 Hisoft Technology Int - Adr com 43358R108 1791 59300 SH Sole 59300 Home Inns & Hotels Mgmt com 43713W107 7577 184995 SH Sole 150580 34415 ICF International, Inc. com 44925C103 1785 69400 SH Sole 69400 II-VI Inc. com 902104108 2457 53000 SH Sole 41700 11300 IPC The Hospitalist Co. com 44984A105 3097 79380 SH Sole 79380 IPG Photonics Corp com 44980X109 2750 86980 SH Sole 51900 35080 IROBOT Corp com 462726100 3633 146010 SH Sole 94790 51220 Igate Corp. com 45169U105 1750 88800 SH Sole 69300 19500 Illumina, Inc. com 452327109 351 5540 SH Sole 5540 Imax Corp. com 45245E109 12554 447225 SH Sole 325190 122035 Impax Laboratories, Inc. com 45256B101 3833 190580 SH Sole 121670 68910 Industrial Svcs of America com 456314103 1046 85000 SH Sole 85000 Infospace Inc Com New com 45678T300 393 47400 SH Sole 47400 Intel Corporation com 458140100 240 11389 SH Sole 11389 Interclick, Inc. com 458483203 3958 737000 SH Sole 737000 Ista Pharmaceuticals, Inc. com 45031X204 3014 587500 SH Sole 587500 Ixia com 45071R109 1170 69700 SH Sole 55100 14600 Ixys Corporation com 46600W106 2740 235800 SH Sole 235800 Jinkosolar Holding Co. ADR com 47759T100 1730 85980 SH Sole 85980 Joe's Jeans, Inc. com 47777N101 854 549300 SH Sole 549300 Johnson & Johnson com 478160104 294 4746 SH Sole 4746 KSW, Inc. com 48268R106 437 119700 SH Sole 119700 Kemet Corporation com 488360207 6764 463927 SH Sole 388152 75775 Key Tronic Corp. com 493144109 760 145600 SH Sole 145600 Kraton Performance Polymers com 50077C106 1211 39140 SH Sole 31640 7500 Kvh Industries, Inc. com 482738101 4990 417580 SH Sole 399700 17880 LGL Group, Inc. com 50186A108 1007 56000 SH Sole 56000 LML Payment Systems, Inc. com 50208P109 1197 343000 SH Sole 343000 La Barge com 502470107 1112 70800 SH Sole 70800 Leapfrog Enterprises, Inc. com 52186N106 2207 397700 SH Sole 397700 Lecroy Corp. com 52324W109 2026 205900 SH Sole 205900 Lihua International, Inc. com 532352101 2529 225000 SH Sole 225000 Liveperson, Inc. com 538146101 2019 178700 SH Sole 178700 Logmein, Inc. com 54142L109 5120 115480 SH Sole 76630 38850 Longtop Financial Techno ADR com 54318P108 5036 139195 SH Sole 130625 8570 MWI Vetrinary Supply com 55402X105 1793 28400 SH Sole 22100 6300 Manitex International, Inc. com 563420108 740 192100 SH Sole 192100 Mcdonald's com 580135101 364 4747 SH Sole 4747 Measurement Specialties Inc. com 583421102 3466 118100 SH Sole 118100 Mediamind Techologies, Inc. com 58449C100 2741 200100 SH Sole 200100 Medidata Solutions, Inc. com 58471A105 8812 369000 SH Sole 331600 37400 Mellanox Technologies Ltd. com M51363113 605 23100 SH Sole 18000 5100 Microsoft Corp. com 594918104 457 16355 SH Sole 16355 Mips Technologies, Inc. com 604567107 7052 464880 SH Sole 319500 145380 Mistras Group, Inc. com 60649T107 4298 318810 SH Sole 269700 49110 Mitek Systems, Inc. com 606710200 886 146400 SH Sole 146400 Momenta Pharmaceuticals Inc. com 60877T100 3426 228890 SH Sole 159000 69890 NN Inc com 629337106 3581 289700 SH Sole 289700 Nanometrics, Inc. com 630077105 4343 338490 SH Sole 334300 4190 National American University H com 63245Q105 2220 302400 SH Sole 302400 Natus Med, Inc. com 639050103 1064 75060 SH Sole 57200 17860 Netgear, Inc. com 64111Q104 1442 42800 SH Sole 33300 9500 Netlogic Microsystems com 64118B100 1565 49840 SH Sole 39200 10640 Newport Corp. com 651824104 1157 66400 SH Sole 51800 14600 Northern Oil & Gas, Inc. com 665531109 2672 98200 SH Sole 77100 21100 Omnivision Technologies, Inc. com 682128103 1250 42200 SH Sole 32900 9300 Opentable, Inc. com 68372A104 6877 97580 SH Sole 71180 26400 Oplink Communications, Inc. com 68375Q403 1590 86100 SH Sole 86100 Orbit\FR Inc. com 685929101 153 54800 SH Sole 54800 Panhandle Oil & Gas Inc. com 698477106 1903 69400 SH Sole 69400 Phillips Van Heusen Corp com 718592108 202 3200 SH Sole 3200 Power-One, Inc. com 73930R102 5967 584985 SH Sole 428900 156085 Primo Water Corp. com 74165N105 2136 150300 SH Sole 150300 Providence Svc Corp. com 743815102 850 52900 SH Sole 52900 QKL Stores, Inc. com 74732Y105 2423 682600 SH Sole 682600 RDA Microelectronics com 749394102 1411 96584 SH Sole 96584 Raven Inds, Inc. com 754212108 2508 52600 SH Sole 40800 11800 Real Goods Solar Inc. - Class com 75601N104 574 225000 SH Sole 225000 Realpage, Inc. com 75606N109 5127 165774 SH Sole 102464 63310 Relm Wireless Corp. com 759525108 63 35000 SH Sole 35000 Richmont Mines, Inc. com 76547T106 2353 460400 SH Sole 458200 2200 Rightnow Tech Inc. com 76657r106 1335 56400 SH Sole 44000 12400 Rubicon Technology, Inc. com 78112T107 2148 101890 SH Sole 62900 38990 Rue21, Inc. com 781295100 2600 88700 SH Sole 69200 19500 SXC Health Solutions Corp. com 78505P100 6787 158350 SH Sole 128000 30350 Salix Pharmaceuticals, Ltd. com 795435106 268 5700 SH Sole 5200 500 Scientific Learning Corp. com 808760102 80 26000 SH Sole 26000 SemiLEDs Corp. com 816645105 5485 188800 SH Sole 174000 14800 Senesco Technologies, Inc com 817208408 14 50000 SH Sole 50000 Shengkai Innovations, Inc. com 82321P104 767 133600 SH Sole 133600 Silicom Ltd. com M84116108 1064 57100 SH Sole 57100 Sina Corp Ord com G81477104 4804 69805 SH Sole 69405 400 Soufun Holdings Ltd ADR com 836034108 2475 34600 SH Sole 34600 Sourcefire, Inc. com 83616T108 3388 130660 SH Sole 115360 15300 Spectrum Ctl, Inc. com 847615101 982 65500 SH Sole 65500 Spongetech Delivery Systems, I com 849109103 0 100000 SH Sole 100000 Spreadtrum Communications com 849415203 12435 676900 SH Sole 531300 145600 Srs Labs, Inc. com 78464M106 2119 240500 SH Sole 240500 Summer Infant, Inc. com 865646103 1464 193200 SH Sole 193200 Supergen, Inc. com 868059106 862 328900 SH Sole 328900 Syswin, Inc. com 872058102 2215 369700 SH Sole 369700 Tal Education Group ADR com 874080104 1761 109400 SH Sole 109400 Taleo Corp. com 87424N104 1214 43900 SH Sole 34700 9200 Telecommunication Systems com 87929J103 2523 540200 SH Sole 540200 Tessco Technologies com 872386107 673 42212 SH Sole 42212 The Travelers Co., Inc. com 89417E109 220 3941 SH Sole 3941 Toyota Motor Corp ADR com 892331307 202 2572 SH Sole 2572 Tri-Tech Holding, Inc. com G9103F106 1370 127300 SH Sole 127300 UFP Tech Inc com 902673102 1030 84500 SH Sole 84500 Unify Corp. com 904743200 713 245900 SH Sole 245900 Vanda Pharmaceuticals, Inc. com 921659108 995 105200 SH Sole 105200 Vera Bradley, Inc. com 92335C106 5258 159330 SH Sole 108500 50830 Viasat Inc. com 92552V100 2571 57900 SH Sole 45200 12700 Vicor Corp. com 925815102 1189 72500 SH Sole 56600 15900 Viropharma Inc. com 928241108 3032 175050 SH Sole 133800 41250 Volterra Semiconductor com 928708106 2484 107245 SH Sole 81500 25745 Wal Mart Stores Inc. com 931142103 228 4223 SH Sole 4223 Walgreen Company com 931422109 339 8700 SH Sole 8700 Wave Systems Corp. com 943526301 2699 685100 SH Sole 685100 Web.com Group, Inc. com 94733A104 1115 131900 SH Sole 131900 Xata Corp. com 983882309 457 218700 SH Sole 218700 Yongye Int'l, Inc. com 98607B106 3021 359600 SH Sole 359600 Yuhe International, Inc. com 988432100 2227 248800 SH Sole 248800 Zix Corp. com 98974P100 3329 779600 SH Sole 751700 27900 Zoo Entertainment, Inc. com 98978F207 960 208200 SH Sole 208200 eMagin Corporation com 29076N206 1394 232400 SH Sole 232400 iSoftStone Holdings Ltd. com 46489B108 182 10000 SH Sole 10000
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