Oberweis Asset Management

Oberweis Asset Management as of June 30, 2011

Portfolio Holdings for Oberweis Asset Management

Oberweis Asset Management holds 198 positions in its portfolio as reported in the June 2011 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Acacia Research Corporation (ACTG) 4.1 $19M 517k 36.69
Amerigon Incorporated 3.4 $16M 892k 17.38
Imax Corp Cad (IMAX) 2.3 $11M 329k 32.43
Twin Disc, Incorporated (TWIN) 2.1 $9.7M 251k 38.63
G-III Apparel (GIII) 2.1 $9.6M 279k 34.50
Sxc Health Solutions Corp 1.8 $8.3M 141k 58.92
Medidata Solutions 1.7 $8.0M 335k 23.87
Web 1.7 $7.8M 636k 12.32
Carrizo Oil & Gas 1.6 $7.5M 180k 41.75
DUSA Pharmaceuticals 1.5 $6.8M 1.1M 6.22
Spreadtrum Communications 1.4 $6.6M 416k 15.76
BroadSoft 1.4 $6.5M 172k 38.13
OpenTable 1.4 $6.5M 78k 83.12
IPG Photonics Corporation (IPGP) 1.4 $6.2M 86k 72.70
Kemet Corporation Cmn 1.3 $6.0M 419k 14.29
Home Inns & Hotels Management 1.2 $5.8M 152k 38.04
Aruba Networks 1.2 $5.6M 188k 29.55
51job 1.2 $5.5M 98k 56.13
Sina Corporation 1.2 $5.4M 52k 104.11
Interactive Intelligence Group 1.2 $5.4M 155k 35.05
GeoResources 1.1 $5.3M 234k 22.49
RightNow Technologies 1.1 $5.2M 160k 32.40
Gulfport Energy Corporation 1.1 $5.1M 172k 29.69
Active Power 1.1 $5.1M 2.1M 2.45
Measurement Specialties 1.1 $5.0M 139k 35.70
Imris (IMRSQ) 1.1 $4.9M 725k 6.83
Wi-lan 1.1 $4.9M 610k 8.07
Cognex Corporation (CGNX) 1.0 $4.6M 130k 35.43
Mistras (MG) 1.0 $4.6M 285k 16.20
Vera Bradley (VRA) 1.0 $4.6M 120k 38.20
Body Central Acquisition Corporation 1.0 $4.5M 190k 23.53
IXYS Corporation 0.9 $4.4M 293k 14.98
BofI Holding 0.9 $4.4M 302k 14.41
Hi-Tech Pharmacal 0.9 $4.0M 140k 28.93
IPC The Hospitalist Company 0.8 $3.8M 83k 46.30
ISTA Pharmaceuticals 0.8 $3.8M 494k 7.64
FARO Technologies (FARO) 0.8 $3.8M 86k 43.79
iRobot Corporation (IRBT) 0.8 $3.7M 106k 35.29
LogMeIn 0.8 $3.8M 97k 38.57
NetEase (NTES) 0.8 $3.6M 80k 45.09
Impax Laboratories 0.8 $3.6M 166k 21.79
NetGear (NTGR) 0.8 $3.6M 82k 43.72
Zix Corporation 0.8 $3.6M 942k 3.84
Endologix 0.8 $3.5M 381k 9.30
China Kanghui Holdings 0.8 $3.5M 151k 23.45
Lydall 0.8 $3.5M 292k 11.96
Materion Corporation (MTRN) 0.8 $3.5M 94k 36.96
Ii-vi 0.7 $3.2M 124k 25.60
Amtech Systems (ASYS) 0.7 $3.2M 153k 20.64
Changyou 0.7 $3.1M 70k 44.03
Kadant (KAI) 0.7 $3.0M 95k 31.51
Sohu 0.6 $3.0M 41k 72.27
Northern Oil & Gas 0.6 $2.9M 130k 22.15
ViroPharma Incorporated 0.6 $2.8M 152k 18.50
Digimarc Corporation (DMRC) 0.6 $2.8M 80k 35.03
HealthStream (HSTM) 0.6 $2.7M 202k 13.27
Taleo Corporation 0.6 $2.6M 70k 37.04
LeCROY Corporation 0.6 $2.6M 215k 12.04
Mitek Systems (MITK) 0.5 $2.5M 350k 7.20
Nanometrics Incorporated 0.5 $2.4M 128k 18.99
Rue21 0.5 $2.5M 76k 32.51
Ada-es 0.5 $2.4M 147k 15.99
Electronics For Imaging 0.5 $2.3M 133k 17.22
Blackboard 0.5 $2.3M 54k 43.38
DG FastChannel 0.5 $2.3M 73k 32.06
Bryn Mawr Bank 0.5 $2.3M 114k 20.25
Travelzoo 0.5 $2.2M 35k 64.64
SouFun Holdings 0.5 $2.3M 110k 20.66
Sun Hydraulics Corporation 0.5 $2.2M 47k 47.79
Primo Water Corporation 0.5 $2.2M 153k 14.39
Kenexa Corporation 0.5 $2.2M 90k 23.98
ExlService Holdings (EXLS) 0.5 $2.2M 95k 23.10
Constant Contact 0.5 $2.2M 86k 25.38
BSQUARE Corporation 0.5 $2.1M 343k 6.27
CPI Aerostructures (CVU) 0.5 $2.1M 156k 13.63
Mitcham Industries 0.5 $2.1M 121k 17.30
21vianet Group (VNET) 0.5 $2.1M 150k 13.74
On Assignment 0.4 $2.0M 208k 9.83
HMS Holdings 0.4 $2.0M 26k 76.88
Cardinal Financial Corporation 0.4 $2.0M 179k 10.95
Advanced Energy Industries (AEIS) 0.4 $1.9M 129k 14.79
Panhandle Oil and Gas 0.4 $1.9M 64k 29.48
Titan Machinery (TITN) 0.4 $1.8M 64k 28.78
AdCare Health Systems 0.4 $1.9M 297k 6.25
DealerTrack Holdings 0.4 $1.8M 78k 22.95
AutoNavi Holdings 0.4 $1.8M 120k 14.85
Ints Intl 0.4 $1.8M 181k 9.95
New Oriental Education & Tech 0.4 $1.8M 16k 111.72
Oplink Communications 0.4 $1.8M 95k 18.62
Virtusa Corporation 0.4 $1.8M 93k 18.95
National American Univ. Holdings (NAUH) 0.4 $1.7M 185k 9.41
Kraton Performance Polymers 0.4 $1.7M 44k 39.17
Entropic Communications 0.3 $1.6M 180k 8.89
Datalink Corporation 0.3 $1.6M 231k 6.95
CRA International (CRAI) 0.3 $1.6M 58k 27.09
Ceragon Networks (CRNT) 0.3 $1.6M 131k 11.89
Rubicon Technology 0.3 $1.5M 90k 16.86
MWI Veterinary Supply 0.3 $1.5M 19k 80.75
Sagent Pharmaceuticals 0.3 $1.5M 56k 26.98
ClearOne Communications 0.3 $1.5M 227k 6.56
Richmont Mines 0.3 $1.5M 207k 7.11
Silicom (SILC) 0.3 $1.4M 71k 20.00
Higher One Holdings 0.3 $1.4M 75k 18.93
LGL (LGL) 0.3 $1.4M 143k 9.89
Silicon Graphics International 0.3 $1.4M 81k 17.20
Rogers Corporation (ROG) 0.3 $1.4M 30k 46.21
3SBio (SSRX) 0.3 $1.4M 80k 17.42
RealPage 0.3 $1.4M 53k 26.47
eMagin Corporation 0.3 $1.4M 229k 6.07
Summer Infant 0.3 $1.4M 170k 8.12
Green Mountain Coffee Roasters 0.3 $1.3M 15k 89.26
3D Systems Corporation (DDD) 0.3 $1.4M 69k 19.71
Rda Microelectronics 0.3 $1.3M 150k 8.99
JinkoSolar Holding (JKS) 0.3 $1.3M 50k 26.52
RealD 0.3 $1.3M 56k 23.38
Charm Communications (CHRM) 0.3 $1.3M 108k 11.90
Almost Family 0.3 $1.2M 46k 27.41
Manitex International (MNTX) 0.3 $1.2M 224k 5.52
iSoftStone Holdings 0.3 $1.2M 80k 15.31
LML Payment Systems 0.3 $1.3M 322k 3.92
Newport Corporation 0.3 $1.2M 67k 18.17
United Financial Ban 0.3 $1.2M 78k 15.43
Ixia 0.2 $1.1M 89k 12.80
Hurco Companies (HURC) 0.2 $1.2M 36k 32.20
Axt (AXTI) 0.2 $1.1M 135k 8.48
Bill Barrett Corporation 0.2 $1.1M 24k 46.33
ICF International (ICFI) 0.2 $1.1M 44k 25.39
Chase Corporation 0.2 $1.0M 63k 16.77
Conmed Healthcare Management (CONM) 0.2 $1.1M 288k 3.65
Alliance Fiber Optic Products 0.2 $1.0M 123k 8.46
Brooks Automation (AZTA) 0.2 $967k 89k 10.87
Electro Rent Corporation 0.2 $974k 57k 17.12
Natus Medical 0.2 $967k 64k 15.14
Momenta Pharmaceuticals 0.2 $965k 50k 19.46
Hardinge 0.2 $982k 90k 10.91
Syswin (SYSW) 0.2 $939k 317k 2.96
OmniVision Technologies 0.2 $895k 26k 34.82
Ceva (CEVA) 0.2 $883k 29k 30.45
ePlus (PLUS) 0.2 $865k 33k 26.45
CAI International 0.2 $866k 42k 20.67
Silicon Image 0.2 $835k 129k 6.46
Tesco Corporation 0.2 $823k 42k 19.41
Align Technology (ALGN) 0.2 $848k 37k 22.80
Acme Packet 0.2 $820k 12k 70.15
Ameres (AMRC) 0.2 $820k 58k 14.19
TAL Education (TAL) 0.2 $827k 76k 10.85
LSB Industries (LXU) 0.2 $807k 19k 42.93
Raven Industries 0.2 $808k 15k 55.72
QKL Stores 0.2 $808k 398k 2.03
Wayside Technology (CLMB) 0.2 $767k 57k 13.55
Kopin Corporation (KOPN) 0.1 $683k 145k 4.71
NN (NNBR) 0.1 $688k 46k 14.96
GSI Technology (GSIT) 0.1 $695k 97k 7.20
Tii Network Technologies (TIII) 0.1 $650k 273k 2.38
Optical Cable Corporation (OCC) 0.1 $595k 147k 4.05
Ambow Education Holding 0.1 $580k 112k 5.17
First Savings Financial (FSFG) 0.1 $606k 39k 15.74
GSE Systems 0.1 $568k 263k 2.16
Baidu (BIDU) 0.1 $476k 3.4k 140.00
Barnwell Industries (BRN) 0.1 $448k 87k 5.16
Netqin Mobile 0.1 $441k 80k 5.51
Microsoft Corporation (MSFT) 0.1 $404k 16k 26.03
McDonald's Corporation (MCD) 0.1 $410k 4.9k 84.34
Illumina (ILMN) 0.1 $416k 5.5k 75.09
BHP Billiton (BHP) 0.1 $412k 4.4k 94.60
KSW (KSW) 0.1 $407k 104k 3.92
Concord Medical Services Holding (CCM) 0.1 $399k 94k 4.23
Sinotech Energy 0.1 $414k 100k 4.14
Walgreen Company 0.1 $369k 8.7k 42.41
Unify Corporation (UNFY) 0.1 $368k 198k 1.86
Johnson & Johnson (JNJ) 0.1 $329k 4.9k 66.49
Perceptron 0.1 $336k 53k 6.36
Magic Software Enterprises (MGIC) 0.1 $321k 64k 4.98
eGain Communications Corporation (EGAN) 0.1 $335k 114k 2.95
General Electric Company 0.1 $280k 15k 18.84
Coca-Cola Company (KO) 0.1 $242k 3.6k 67.41
Wal-Mart Stores (WMT) 0.1 $225k 4.2k 53.19
Travelers Companies (TRV) 0.1 $244k 4.2k 58.39
Zebra Technologies (ZBRA) 0.1 $253k 6.0k 42.17
Intel Corporation (INTC) 0.1 $253k 11k 22.17
Amgen (AMGN) 0.1 $221k 3.8k 58.23
Toyota Motor Corporation (TM) 0.1 $223k 2.7k 82.26
Poly 0.1 $228k 3.6k 64.23
Exxon Mobil Corporation (XOM) 0.0 $205k 2.5k 81.58
Select Comfort 0.0 $192k 11k 17.94
Perry Ellis International 0.0 $205k 8.1k 25.31
Cirrus Logic (CRUS) 0.0 $187k 12k 16.26
Omnicell (OMCL) 0.0 $176k 11k 15.58
Allied Motion Technologies (ALNT) 0.0 $185k 34k 5.46
Caribou Coffee Company 0.0 $134k 10k 13.27
XATA Corporation 0.0 $156k 82k 1.90
Orbit/fr (ORFR) 0.0 $138k 63k 2.20
Akorn 0.0 $77k 11k 7.00
Mastech Holdings (MHH) 0.0 $110k 32k 3.41
Power-One 0.0 $95k 12k 8.19
Real Goods Solar 0.0 $101k 34k 3.00
Senesco Technologies 0.0 $14k 50k 0.28
Spongetech Delivery Systems 0.0 $0 890k 0.00