Oberweis Asset Management

Oberweis Asset Management as of March 31, 2013

Portfolio Holdings for Oberweis Asset Management

Oberweis Asset Management holds 144 positions in its portfolio as reported in the March 2013 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Medidata Solutions 6.8 $23M 396k 57.98
Acacia Research Corporation (ACTG) 5.0 $17M 562k 30.17
Francescas Hldgs Corp 4.5 $15M 524k 28.72
Web 3.7 $13M 740k 17.08
HMS Holdings 3.2 $11M 398k 27.15
On Assignment 3.0 $10M 407k 25.31
BofI Holding 3.0 $10M 281k 35.88
ExlService Holdings (EXLS) 2.8 $9.6M 291k 32.88
IPG Photonics Corporation (IPGP) 2.8 $9.4M 141k 66.41
Netqin Mobile 2.8 $9.4M 1.0M 9.01
Ellie Mae 2.6 $8.9M 368k 24.05
21vianet Group (VNET) 2.6 $8.9M 942k 9.40
Gulfport Energy Corporation 2.4 $8.1M 177k 45.83
PennyMac Mortgage Investment Trust (PMT) 2.3 $7.8M 300k 25.89
Tangoe 2.0 $6.7M 539k 12.39
Avg Technologies 1.9 $6.3M 450k 13.92
Roadrunner Transportation Services Hold. 1.9 $6.3M 272k 23.00
Mistras (MG) 1.9 $6.2M 258k 24.21
HealthStream (HSTM) 1.7 $5.9M 255k 22.94
Advisory Board Company 1.6 $5.5M 105k 52.52
Stamps 1.6 $5.3M 214k 24.97
Imax Corp Cad (IMAX) 1.6 $5.3M 198k 26.73
Steven Madden (SHOO) 1.3 $4.4M 102k 43.22
Gentherm (THRM) 1.3 $4.3M 262k 16.38
Invensense 1.3 $4.3M 399k 10.68
Mitcham Industries 1.1 $3.8M 227k 16.92
Spreadtrum Communications 1.1 $3.8M 186k 20.51
Catamaran 1.1 $3.5M 67k 53.04
DealerTrack Holdings 1.0 $3.5M 118k 29.38
51job 0.8 $2.9M 48k 59.40
Endologix 0.8 $2.8M 174k 16.15
NetEase (NTES) 0.8 $2.7M 50k 54.78
Interactive Intelligence Group 0.8 $2.6M 60k 44.35
Datawatch Corporation 0.8 $2.6M 174k 15.00
Support 0.7 $2.5M 598k 4.18
Qihoo 360 Technologies Co Lt 0.7 $2.4M 80k 29.62
Depository Vipshop Holdings Ltd - Ads receipt (VIPS) 0.7 $2.3M 75k 30.37
REPCOM cla 0.7 $2.2M 130k 16.90
China Lodging 0.6 $2.1M 130k 16.46
ValueClick 0.6 $2.1M 71k 29.57
CAI International 0.6 $1.9M 68k 28.81
Greenway Medical Technology 0.6 $2.0M 123k 15.90
Consumer Portfolio Services (CPSS) 0.6 $1.9M 165k 11.71
Omnicell (OMCL) 0.5 $1.8M 97k 18.88
Multimedia Games 0.5 $1.8M 84k 20.87
Market Leader 0.5 $1.6M 179k 8.96
Barrett Business Services (BBSI) 0.5 $1.6M 30k 52.66
Changyou 0.5 $1.6M 55k 28.89
Spdr S&p 500 Etf (SPY) 0.4 $1.4M 9.2k 156.63
Sourcefire 0.4 $1.3M 23k 59.25
Cirrus Logic (CRUS) 0.4 $1.3M 58k 22.75
Stratasys (SSYS) 0.4 $1.3M 18k 74.21
Cyberonics 0.4 $1.3M 27k 46.79
Giant Interactive 0.4 $1.3M 200k 6.50
Bonanza Creek Energy 0.4 $1.2M 32k 38.68
Maximus (MMS) 0.4 $1.2M 15k 80.00
Rue21 0.4 $1.2M 41k 29.39
Grand Canyon Education (LOPE) 0.3 $1.2M 46k 25.38
Oxford Industries (OXM) 0.3 $1.2M 22k 53.11
8x8 (EGHT) 0.3 $1.2M 171k 6.85
Halcon Resources 0.3 $1.2M 151k 7.79
Tillys (TLYS) 0.3 $1.2M 92k 12.72
Zumiez (ZUMZ) 0.3 $1.2M 50k 22.91
Berkshire Hills Ban (BHLB) 0.3 $1.1M 44k 25.55
Flotek Industries 0.3 $1.1M 68k 16.35
G-III Apparel (GIII) 0.3 $1.1M 27k 40.11
Cardinal Financial Corporation 0.3 $1.1M 58k 18.18
Procera Networks 0.3 $1.0M 87k 11.89
Ban (TBBK) 0.3 $1.0M 73k 13.85
Noah Holdings (NOAH) 0.3 $999k 137k 7.27
Homeowners Choice 0.3 $1.0M 37k 27.25
Eagle Ban (EGBN) 0.3 $970k 44k 21.90
Bryn Mawr Bank 0.3 $920k 40k 23.29
Northern Oil & Gas 0.2 $831k 58k 14.38
CLICKSOFTWARE TECHNOLOGIES Ltd Com Stk 0.2 $851k 106k 8.04
Silicom (SILC) 0.2 $854k 30k 28.18
Digimarc Corporation (DMRC) 0.2 $802k 37k 21.96
Inphi Corporation 0.2 $777k 74k 10.44
Freeport-McMoRan Copper & Gold (FCX) 0.2 $728k 22k 33.12
Perficient (PRFT) 0.2 $736k 63k 11.66
Streamline Health Solutions (STRM) 0.2 $743k 115k 6.45
Lannett Company 0.2 $725k 72k 10.11
Triangle Petroleum Corporation 0.2 $713k 108k 6.60
eGain Communications Corporation (EGAN) 0.2 $703k 81k 8.66
Ints Intl 0.2 $667k 42k 15.92
Acquity 0.2 $673k 106k 6.35
Energy Xxi 0.2 $629k 23k 27.23
Protalix BioTherapeutics 0.2 $632k 115k 5.49
DXP Enterprises (DXPE) 0.2 $627k 8.4k 74.64
Ada-es 0.2 $656k 25k 26.56
Winnebago Industries (WGO) 0.2 $615k 30k 20.64
Virtusa Corporation 0.2 $596k 25k 23.75
Callon Pete Co Del Com Stk 0.2 $618k 167k 3.70
PDF Solutions (PDFS) 0.2 $617k 39k 16.03
Manitex International (MNTX) 0.2 $619k 50k 12.40
Financial Engines 0.2 $623k 17k 36.22
Joe's Jeans 0.2 $559k 329k 1.70
Rpx Corp 0.2 $559k 40k 14.12
Premier Exhibitions 0.2 $539k 203k 2.66
Datalink Corporation 0.2 $536k 44k 12.08
MaxLinear (MXL) 0.2 $536k 87k 6.20
Vascular Solutions 0.1 $517k 32k 16.21
Panhandle Oil and Gas 0.1 $461k 16k 28.63
Microsoft Corporation (MSFT) 0.1 $445k 16k 28.60
McDonald's Corporation (MCD) 0.1 $431k 4.3k 99.65
Arctic Cat 0.1 $454k 10k 43.65
TASER International 0.1 $445k 56k 7.95
Aruba Networks 0.1 $438k 18k 24.75
Emcore Corp (EMKR) 0.1 $448k 77k 5.82
Proto Labs (PRLB) 0.1 $437k 8.9k 49.10
Walgreen Company 0.1 $415k 8.7k 47.70
IPC The Hospitalist Company 0.1 $404k 9.1k 44.49
United Financial Ban 0.1 $406k 27k 15.21
CalAmp 0.1 $419k 38k 10.97
Zillow 0.1 $410k 7.5k 54.67
Johnson & Johnson (JNJ) 0.1 $373k 4.6k 81.53
Travelers Companies (TRV) 0.1 $365k 4.3k 84.10
Cynosure 0.1 $359k 14k 26.20
AdCare Health Systems 0.1 $364k 91k 4.00
Amgen (AMGN) 0.1 $345k 3.4k 102.40
First Savings Financial (FSFG) 0.1 $324k 15k 21.74
Coca-Cola Company (KO) 0.1 $290k 7.2k 40.37
Wal-Mart Stores (WMT) 0.1 $294k 3.9k 74.77
General Electric Company 0.1 $292k 13k 23.13
Verizon Communications (VZ) 0.1 $310k 6.3k 49.23
BHP Billiton (BHP) 0.1 $295k 4.3k 68.38
Allot Communications (ALLT) 0.1 $303k 25k 11.93
JPMorgan Chase & Co. (JPM) 0.1 $281k 5.9k 47.40
Apple (AAPL) 0.1 $284k 641.00 443.06
Shanda Games 0.1 $247k 83k 2.98
Kimberly-Clark Corporation (KMB) 0.1 $226k 2.3k 97.88
Intel Corporation (INTC) 0.1 $235k 11k 21.81
Toyota Motor Corporation (TM) 0.1 $247k 2.4k 102.49
Us Silica Hldgs (SLCA) 0.1 $229k 9.7k 23.61
Exxon Mobil Corporation (XOM) 0.1 $218k 2.4k 89.97
Access National Corporation 0.1 $208k 13k 16.38
Bitauto Hldg 0.1 $211k 21k 9.90
Methode Electronics (MEI) 0.0 $151k 12k 12.91
Marine Products (MPX) 0.0 $85k 12k 7.33
Magic Software Enterprises (MGIC) 0.0 $103k 20k 5.23
Gsi 0.0 $112k 13k 8.55
Furmanite Corporation 0.0 $79k 12k 6.69
Senesco Technologies 0.0 $4.0k 50k 0.08
Xenacare Hldgs 0.0 $1.4k 140k 0.01