Oberweis Asset Management

Oberweis Asset Management as of March 31, 2012

Portfolio Holdings for Oberweis Asset Management

Oberweis Asset Management holds 159 positions in its portfolio as reported in the March 2012 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Acacia Research Corporation (ACTG) 4.7 $18M 430k 41.74
Amerigon Incorporated 3.5 $13M 831k 16.18
Imax Corp Cad (IMAX) 2.7 $10M 424k 24.44
Francescas Hldgs Corp 2.5 $9.7M 308k 31.61
Web 2.5 $9.5M 661k 14.43
Mistras (MG) 2.4 $9.1M 381k 23.82
GeoResources 2.3 $9.0M 274k 32.74
Sxc Health Solutions Corp 2.2 $8.7M 116k 74.96
Body Central Acquisition Corporation 2.2 $8.3M 286k 29.02
Kenexa Corporation 2.1 $8.3M 265k 31.24
Tangoe 2.1 $8.3M 439k 18.81
Medidata Solutions 2.1 $8.0M 302k 26.64
21vianet Group (VNET) 1.8 $7.1M 624k 11.35
HealthStream (HSTM) 1.7 $6.6M 283k 23.19
BroadSoft 1.6 $6.3M 164k 38.25
DealerTrack Holdings 1.6 $6.0M 199k 30.26
Spreadtrum Communications 1.6 $6.0M 364k 16.50
Interactive Intelligence Group 1.4 $5.5M 182k 30.51
Twin Disc, Incorporated (TWIN) 1.4 $5.5M 212k 26.09
IPG Photonics Corporation (IPGP) 1.2 $4.8M 92k 52.04
BofI Holding 1.2 $4.7M 274k 17.08
DUSA Pharmaceuticals 1.2 $4.6M 728k 6.26
Endologix 1.2 $4.5M 308k 14.65
Ceva (CEVA) 1.1 $4.4M 194k 22.71
Gulfport Energy Corporation 1.1 $4.4M 150k 29.12
On Assignment 1.1 $4.3M 245k 17.47
51job 1.1 $4.2M 74k 56.86
Netqin Mobile 1.1 $4.2M 391k 10.64
FARO Technologies (FARO) 1.1 $4.1M 70k 58.33
Sina Corporation 1.0 $4.0M 61k 65.00
Digimarc Corporation (DMRC) 1.0 $3.8M 137k 27.94
Qihoo 360 Technologies Co Lt 1.0 $3.9M 158k 24.45
NetEase (NTES) 0.9 $3.6M 62k 58.10
Hi-Tech Pharmacal 0.9 $3.5M 98k 35.93
Impax Laboratories 0.9 $3.4M 137k 24.58
Mitcham Industries 0.8 $3.2M 142k 22.46
Aruba Networks 0.8 $3.1M 140k 22.28
CPI Aerostructures (CVU) 0.8 $3.1M 208k 14.87
Ints Intl 0.8 $3.1M 292k 10.54
ExlService Holdings (EXLS) 0.8 $3.1M 111k 27.44
Vera Bradley (VRA) 0.8 $3.0M 100k 30.19
G-III Apparel (GIII) 0.8 $3.0M 106k 28.42
HMS Holdings 0.8 $3.0M 96k 31.21
ViroPharma Incorporated 0.8 $3.0M 98k 30.07
IPC The Hospitalist Company 0.7 $2.8M 77k 36.91
Flotek Industries 0.7 $2.8M 233k 12.02
Roadrunner Transportation Services Hold. 0.7 $2.8M 161k 17.35
OpenTable 0.7 $2.8M 69k 40.47
China Kanghui Holdings 0.7 $2.8M 148k 19.01
Ada-es 0.7 $2.6M 107k 24.31
Mitek Systems (MITK) 0.7 $2.5M 218k 11.60
Teavana Hldgs 0.7 $2.6M 130k 19.72
Bryn Mawr Bank 0.6 $2.4M 108k 22.44
Acme Packet 0.6 $2.4M 86k 27.52
Silicom (SILC) 0.6 $2.4M 134k 17.84
LogMeIn 0.6 $2.4M 67k 35.23
Greenway Medical Technology 0.6 $2.3M 150k 15.28
VASCO Data Security International 0.6 $2.3M 210k 10.79
Zix Corporation 0.6 $2.2M 755k 2.91
Datalink Corporation 0.6 $2.1M 223k 9.52
Procera Networks 0.6 $2.1M 95k 22.36
Northern Oil & Gas 0.5 $2.1M 101k 20.74
Taleo Corporation 0.5 $2.1M 45k 45.93
Hurco Companies (HURC) 0.5 $2.0M 70k 28.24
Cardinal Financial Corporation 0.5 $1.9M 170k 11.30
ValueClick 0.5 $1.9M 96k 19.74
Changyou 0.5 $1.9M 70k 27.16
Wi-lan 0.5 $1.9M 369k 5.15
Zillow 0.5 $1.9M 53k 35.59
Hardinge 0.5 $1.8M 195k 9.46
Panhandle Oil and Gas 0.5 $1.8M 61k 29.48
Rue21 0.5 $1.8M 62k 29.34
LeCROY Corporation 0.5 $1.8M 172k 10.39
Manitex International (MNTX) 0.5 $1.7M 237k 7.33
New Oriental Education & Tech 0.4 $1.6M 60k 27.47
Mellanox Technologies 0.4 $1.6M 37k 41.82
Virtusa Corporation 0.4 $1.5M 89k 17.27
Align Technology (ALGN) 0.4 $1.5M 56k 27.54
Eagle Ban (EGBN) 0.4 $1.5M 92k 16.74
Youku 0.4 $1.5M 70k 21.99
Cirrus Logic (CRUS) 0.4 $1.5M 63k 23.80
AutoNavi Holdings 0.4 $1.5M 120k 12.55
Stamps 0.4 $1.4M 52k 27.88
Allot Communications (ALLT) 0.4 $1.4M 61k 23.25
Sohu 0.4 $1.4M 25k 55.15
Titan Machinery (TITN) 0.4 $1.4M 50k 28.21
Advisory Board Company 0.4 $1.4M 16k 88.60
Callon Pete Co Del Com Stk 0.4 $1.4M 222k 6.29
Syneron Medical Ltd ord 0.3 $1.4M 127k 10.72
Kadant (KAI) 0.3 $1.3M 56k 23.83
Multi-Color Corporation 0.3 $1.3M 58k 22.52
iShares FTSE/Xinhua China 25 Index (FXI) 0.3 $1.3M 35k 36.66
ClearOne Communications 0.3 $1.3M 284k 4.50
HiSoft Technology International (HSFT) 0.3 $1.3M 85k 15.02
AdCare Health Systems 0.3 $1.3M 338k 3.80
United Financial Ban 0.3 $1.2M 78k 15.82
Arctic Cat 0.3 $1.2M 28k 42.84
AuthenTec 0.3 $1.2M 374k 3.16
Stratasys 0.3 $1.1M 30k 36.51
Travelzoo 0.3 $1.1M 47k 23.00
Keynote Systems 0.3 $1.0M 52k 19.77
Oxford Industries (OXM) 0.3 $1.0M 20k 50.80
Basic Energy Services 0.3 $984k 57k 17.35
Perficient (PRFT) 0.2 $958k 80k 12.01
Berkshire Hills Ban (BHLB) 0.2 $944k 41k 22.91
Guidance Software 0.2 $905k 82k 11.05
Symmetri 0.2 $893k 155k 5.77
Wayside Technology (CLMB) 0.2 $828k 58k 14.20
Richmont Mines 0.2 $842k 108k 7.78
CAI International 0.2 $725k 40k 18.17
RealPage 0.2 $683k 36k 19.17
First Savings Financial (FSFG) 0.2 $655k 38k 17.10
eGain Communications Corporation (EGAN) 0.2 $659k 110k 6.00
MWI Veterinary Supply 0.2 $616k 7.0k 88.00
Baidu (BIDU) 0.1 $569k 3.9k 145.90
3SBio (SSRX) 0.1 $577k 39k 14.79
Financial Engines 0.1 $572k 26k 22.34
Datawatch Corporation 0.1 $581k 44k 13.30
Microsoft Corporation (MSFT) 0.1 $509k 16k 32.28
Momenta Pharmaceuticals 0.1 $492k 32k 15.33
Earthstone Energy 0.1 $507k 24k 21.48
McDonald's Corporation (MCD) 0.1 $477k 4.9k 98.07
Tesco Corporation 0.1 $478k 34k 14.18
Clearfield (CLFD) 0.1 $458k 84k 5.43
Marine Products (MPX) 0.1 $393k 66k 5.95
OraSure Technologies (OSUR) 0.1 $391k 34k 11.50
Optical Cable Corporation (OCC) 0.1 $361k 103k 3.51
Johnson & Johnson (JNJ) 0.1 $323k 4.9k 65.90
General Electric Company 0.1 $311k 16k 20.05
Intel Corporation (INTC) 0.1 $297k 11k 28.11
Walgreen Company 0.1 $291k 8.7k 33.45
BHP Billiton (BHP) 0.1 $314k 4.3k 72.43
LGL (LGL) 0.1 $301k 42k 7.25
Magic Software Enterprises (MGIC) 0.1 $314k 49k 6.42
Coca-Cola Company (KO) 0.1 $266k 3.6k 74.05
Wal-Mart Stores (WMT) 0.1 $259k 4.2k 61.11
Travelers Companies (TRV) 0.1 $256k 4.3k 59.18
Amgen (AMGN) 0.1 $258k 3.8k 67.91
Poly 0.1 $270k 14k 19.07
QKL Stores 0.1 $286k 362k 0.79
JPMorgan Chase & Co. (JPM) 0.1 $213k 4.6k 45.92
Exxon Mobil Corporation (XOM) 0.1 $230k 2.7k 86.66
Abbott Laboratories (ABT) 0.1 $221k 3.6k 61.39
Zebra Technologies (ZBRA) 0.1 $218k 5.3k 41.13
Toyota Motor Corporation (TM) 0.1 $227k 2.6k 86.81
Select Comfort 0.1 $220k 6.8k 32.35
PROS Holdings (PRO) 0.1 $236k 13k 18.73
JDS Uniphase Corporation 0.1 $191k 13k 14.50
Taylor Devices (TAYD) 0.1 $204k 20k 10.20
eResearch Technology 0.0 $135k 17k 7.80
Omnicell (OMCL) 0.0 $158k 10k 15.19
Synergetics USA 0.0 $164k 25k 6.51
Mindspeed Technologies 0.0 $103k 16k 6.36
D Bona Film Group 0.0 $126k 24k 5.21
XATA Corporation 0.0 $100k 76k 1.31
Hercules Offshore 0.0 $61k 13k 4.77
Openwave Systems 0.0 $59k 26k 2.28
Syswin (SYSW) 0.0 $48k 53k 0.90
Senesco Technologies 0.0 $13k 50k 0.26