Oberweis Asset Management

Oberweis Asset Management as of March 31, 2011

Portfolio Holdings for Oberweis Asset Management

Oberweis Asset Management holds 205 positions in its portfolio as reported in the March 2011 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Acacia Research Corporation (ACTG) 4.1 $20M 566k 34.35
Imax Corp Cad (IMAX) 2.6 $12M 389k 31.98
G-III Apparel (GIII) 2.5 $12M 321k 37.57
Amerigon Incorporated 2.4 $12M 762k 15.27
Spreadtrum Communications 2.3 $11M 588k 18.55
Medidata Solutions 1.8 $8.7M 342k 25.57
Web 1.7 $8.3M 570k 14.57
OpenTable 1.6 $7.6M 72k 106.35
Sxc Health Solutions Corp 1.6 $7.6M 138k 54.80
GeoResources 1.5 $7.3M 234k 31.27
Kemet Corporation Cmn 1.5 $7.0M 471k 14.83
Carrizo Oil & Gas 1.4 $6.6M 178k 36.93
Active Power 1.3 $6.2M 2.1M 2.93
Aruba Networks 1.3 $6.2M 182k 33.84
ISTA Pharmaceuticals 1.3 $6.2M 612k 10.12
Twin Disc, Incorporated (TWIN) 1.3 $6.1M 190k 32.22
Imris (IMRSQ) 1.2 $6.0M 825k 7.26
Green Mountain Coffee Roasters 1.2 $5.9M 91k 64.61
Home Inns & Hotels Management 1.2 $5.9M 148k 39.57
Mistras (MG) 1.2 $5.7M 330k 17.21
Vera Bradley (VRA) 1.1 $5.4M 127k 42.21
51job 1.1 $5.2M 81k 63.93
Gulfport Energy Corporation 1.1 $5.1M 141k 36.13
IPG Photonics Corporation (IPGP) 1.0 $4.9M 85k 57.69
BofI Holding 1.0 $4.9M 314k 15.52
Measurement Specialties 1.0 $4.8M 141k 34.02
Body Central Acquisition Corporation 0.9 $4.4M 190k 23.23
Materion Corporation (MTRN) 0.9 $4.3M 106k 40.80
LogMeIn 0.9 $4.3M 101k 42.16
iRobot Corporation (IRBT) 0.9 $4.2M 127k 32.89
Impax Laboratories 0.9 $4.1M 162k 25.45
Higher One Holdings 0.9 $4.1M 286k 14.45
Interactive Intelligence 0.8 $4.0M 105k 38.71
NetEase (NTES) 0.8 $3.8M 76k 49.51
Sina Corporation 0.8 $3.7M 35k 107.03
IPC The Hospitalist Company 0.8 $3.7M 81k 45.41
Cognex Corporation (CGNX) 0.8 $3.6M 127k 28.25
3SBio (SSRX) 0.8 $3.6M 207k 17.29
Rubicon Technology 0.7 $3.5M 127k 27.68
BSQUARE Corporation 0.7 $3.5M 495k 7.14
Ada-es 0.7 $3.5M 160k 21.85
Constant Contact 0.7 $3.4M 97k 34.90
FARO Technologies (FARO) 0.7 $3.3M 83k 40.00
Northern Oil & Gas 0.7 $3.3M 123k 26.70
IXYS Corporation 0.7 $3.2M 241k 13.43
Charm Communications (CHRM) 0.7 $3.2M 324k 9.93
RealPage 0.7 $3.1M 112k 27.73
Endologix 0.7 $3.1M 457k 6.78
JinkoSolar Holding (JKS) 0.6 $3.0M 112k 27.00
Kadant (KAI) 0.6 $2.9M 113k 26.19
Zix Corporation 0.6 $3.0M 802k 3.70
RightNow Technologies 0.6 $2.9M 92k 31.31
KVH Industries (KVHI) 0.6 $2.9M 189k 15.12
ViroPharma Incorporated 0.6 $2.8M 142k 19.90
LeCROY Corporation 0.6 $2.8M 212k 13.37
Hi-Tech Pharmacal 0.6 $2.8M 138k 20.13
Longtop Financial Technologies 0.6 $2.7M 86k 31.41
China Ming Yang Wind Power 0.6 $2.7M 265k 10.31
SouFun Holdings 0.6 $2.7M 144k 18.66
3D Systems Corporation (DDD) 0.5 $2.6M 53k 48.53
CPI Aerostructures (CVU) 0.5 $2.4M 161k 15.20
HMS Holdings 0.5 $2.4M 29k 81.85
NN (NNBR) 0.5 $2.4M 132k 18.26
Nanometrics Incorporated 0.5 $2.3M 128k 18.09
Acme Packet 0.5 $2.3M 33k 70.96
GSI Technology (GSIT) 0.5 $2.3M 250k 9.09
Syswin (SYSW) 0.5 $2.3M 370k 6.27
Ii-vi 0.5 $2.2M 45k 49.76
Panhandle Oil and Gas 0.5 $2.2M 71k 31.65
DUSA Pharmaceuticals 0.5 $2.2M 429k 5.20
Richmont Mines 0.5 $2.2M 336k 6.65
Oplink Communications 0.5 $2.2M 114k 19.49
Wave Systems 0.5 $2.2M 699k 3.13
Rue21 0.5 $2.1M 74k 28.75
Cardinal Financial Corporation 0.4 $2.1M 179k 11.66
Raven Industries 0.4 $2.1M 34k 61.41
Digimarc Corporation (DMRC) 0.4 $2.1M 73k 28.91
Ixia 0.4 $2.1M 131k 15.88
Ceragon Networks (CRNT) 0.4 $2.0M 169k 12.08
Exfo 0.4 $2.0M 182k 10.93
LSB Industries (LXU) 0.4 $1.9M 49k 39.63
LGL (LGL) 0.4 $2.0M 143k 13.89
China Kanghui Holdings 0.4 $2.0M 113k 17.51
TAL Education (TAL) 0.4 $2.0M 180k 10.93
MWI Veterinary Supply 0.4 $1.9M 24k 80.67
Concord Medical Services Holding (CCM) 0.4 $1.9M 336k 5.65
Bryn Mawr Bank 0.4 $1.9M 92k 20.56
Primo Water Corporation 0.4 $1.9M 153k 12.32
Blackboard 0.4 $1.9M 51k 36.25
ExlService Holdings (EXLS) 0.4 $1.9M 88k 21.16
Axcelis Technologies 0.4 $1.8M 697k 2.65
Ambow Education Holding 0.4 $1.9M 237k 7.93
Changyou 0.4 $1.8M 57k 32.13
Rda Microelectronics 0.4 $1.8M 128k 14.32
Alliance Fiber Optic Products 0.4 $1.8M 163k 11.16
Virtusa Corporation 0.4 $1.8M 94k 18.73
Silicon Graphics International 0.4 $1.7M 81k 21.41
Almost Family 0.4 $1.7M 46k 37.65
Taleo Corporation 0.4 $1.7M 48k 35.66
AutoNavi Holdings 0.4 $1.7M 97k 17.71
RealD 0.4 $1.7M 63k 27.37
eMagin Corporation 0.4 $1.7M 238k 7.15
National American Univ. Holdings (NAUH) 0.3 $1.6M 226k 7.09
Newport Corporation 0.3 $1.6M 87k 17.84
American Superconductor Corporation 0.3 $1.6M 63k 24.88
DG FastChannel 0.3 $1.6M 49k 32.18
Globecomm Systems 0.3 $1.6M 127k 12.33
MediaMind Technologies (MDMD) 0.3 $1.5M 111k 13.81
Tri-tech Holding (TRITF) 0.3 $1.5M 127k 11.65
China XD Plastics 0.3 $1.4M 277k 5.21
Mitek Systems (MITK) 0.3 $1.4M 353k 4.05
iGATE Corporation 0.3 $1.4M 72k 18.78
LivePerson (LPSN) 0.3 $1.3M 106k 12.64
AdCare Health Systems 0.3 $1.3M 285k 4.65
Summer Infant 0.3 $1.4M 170k 8.00
LaBarge 0.3 $1.3M 72k 17.70
Power-One 0.3 $1.3M 149k 8.75
Amtech Systems (ASYS) 0.3 $1.3M 52k 25.24
United Financial Ban 0.3 $1.2M 75k 16.51
QKL Stores 0.3 $1.2M 469k 2.64
Datalink Corporation 0.3 $1.2M 193k 6.40
LML Payment Systems 0.3 $1.2M 427k 2.90
Brooks Automation (AZTA) 0.2 $1.2M 88k 13.73
Yongye International 0.2 $1.2M 194k 6.13
NetGear (NTGR) 0.2 $1.1M 35k 32.44
Chase Corporation 0.2 $1.2M 63k 18.58
Yuhe International (YUII) 0.2 $1.1M 171k 6.66
CAI International 0.2 $1.2M 45k 25.87
Electro Rent Corporation 0.2 $1.1M 65k 17.18
Sun Hydraulics Corporation 0.2 $1.1M 26k 43.09
ePlus (PLUS) 0.2 $1.1M 42k 26.62
Manitex International (MNTX) 0.2 $1.1M 196k 5.50
Kraton Performance Polymers 0.2 $1.1M 29k 38.25
Natus Medical 0.2 $1.0M 62k 16.81
Perceptron 0.2 $1.0M 164k 6.35
GLG Life Tech 0.2 $1.1M 102k 10.53
Silicom (SILC) 0.2 $1.1M 58k 18.38
iSoftStone Holdings 0.2 $1.0M 56k 18.52
Lihua International 0.2 $1.0M 114k 8.78
Conmed Healthcare Management (CONM) 0.2 $1.0M 307k 3.27
Bill Barrett Corporation 0.2 $922k 23k 39.91
ICF International (ICFI) 0.2 $904k 44k 20.55
Momenta Pharmaceuticals 0.2 $927k 59k 15.85
Optical Cable Corporation (OCC) 0.2 $913k 186k 4.90
SRS Labs (SRSL) 0.2 $920k 108k 8.54
Global Education and Technology (GEDU) 0.2 $929k 152k 6.13
Tesco Corporation 0.2 $871k 40k 21.94
Danvers Ban (DNBK) 0.2 $872k 41k 21.43
Ancestry 0.2 $837k 24k 35.47
Advanced Energy Industries (AEIS) 0.2 $793k 49k 16.35
GeoEye 0.2 $798k 19k 41.56
Hurco Companies (HURC) 0.2 $808k 27k 30.49
Tii Network Technologies (TIII) 0.2 $789k 273k 2.89
ViaSat (VSAT) 0.2 $785k 20k 39.85
Vanda Pharmaceuticals (VNDA) 0.2 $782k 107k 7.29
ClearOne Communications 0.2 $772k 115k 6.74
Ameres (AMRC) 0.2 $778k 55k 14.15
Wayside Technology (CLMB) 0.2 $763k 56k 13.72
Cohu (COHU) 0.1 $697k 45k 15.35
Align Technology (ALGN) 0.1 $731k 36k 20.48
Vicor Corporation (VICR) 0.1 $726k 44k 16.50
Hardinge 0.1 $722k 53k 13.70
Cirrus Logic (CRUS) 0.1 $620k 30k 21.02
GSE Systems 0.1 $614k 272k 2.26
Unify Corporation (UNFY) 0.1 $636k 231k 2.75
Axt (AXTI) 0.1 $553k 77k 7.17
First Savings Financial (FSFG) 0.1 $589k 39k 15.30
MIPS Technologies 0.1 $538k 51k 10.49
Entropic Communications 0.1 $547k 65k 8.45
Baidu (BIDU) 0.1 $469k 3.4k 137.94
Barnwell Industries (BRN) 0.1 $463k 64k 7.25
Magic Software Enterprises (MGIC) 0.1 $486k 64k 7.55
Microsoft Corporation (MSFT) 0.1 $419k 17k 25.37
BHP Billiton (BHP) 0.1 $430k 4.5k 95.81
NetLogic Microsystems 0.1 $409k 9.7k 41.99
OmniVision Technologies 0.1 $433k 12k 35.49
KSW (KSW) 0.1 $410k 116k 3.53
Cavium Networks 0.1 $431k 9.6k 44.90
Adept Technology 0.1 $429k 93k 4.60
McDonald's Corporation (MCD) 0.1 $374k 4.9k 75.99
Illumina (ILMN) 0.1 $388k 5.5k 70.04
Silicon Image 0.1 $392k 44k 8.97
Real Goods Solar 0.1 $381k 144k 2.65
General Electric Company 0.1 $342k 17k 20.06
Walgreen Company 0.1 $349k 8.7k 40.11
Allied Motion Technologies (ALNT) 0.1 $353k 50k 7.06
Zoo Entertainment (ZOOG) 0.1 $329k 82k 4.03
eGain Communications Corporation (EGAN) 0.1 $349k 125k 2.80
Coca-Cola Company (KO) 0.1 $270k 4.1k 66.24
Johnson & Johnson (JNJ) 0.1 $286k 4.8k 59.30
Bank of New York Mellon Corporation (BK) 0.1 $230k 7.7k 29.83
Exxon Mobil Corporation (XOM) 0.1 $227k 2.7k 84.29
Wal-Mart Stores (WMT) 0.1 $224k 4.3k 51.98
Travelers Companies (TRV) 0.1 $234k 3.9k 59.36
Intel Corporation (INTC) 0.1 $234k 12k 20.14
Toyota Motor Corporation (TM) 0.1 $216k 2.7k 80.42
JDS Uniphase Corporation 0.1 $216k 10k 20.81
XATA Corporation 0.1 $227k 95k 2.38
Amgen (AMGN) 0.0 $207k 3.9k 53.42
Orbit/fr (ORFR) 0.0 $164k 57k 2.90
Mastech Holdings (MHH) 0.0 $90k 19k 4.64
Citigroup (C) 0.0 $77k 17k 4.42
Akorn 0.0 $58k 10k 5.80
Senesco Technologies 0.0 $15k 50k 0.30
Spongetech Delivery Systems 0.0 $0 890k 0.00