13F HOLDINGS REPORT
OBERWEIS ASSET MANAGEMENT INC/
Quarter ended Q2 2023 · Filed May 15, 2023 · Accession 0001213900-23-039430
Total Value
$644.5M
Positions
174
Other Managers
0
Confidential Omitted
No
Holdings (174)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | Constellium NV Cl A | CSTM | 4,553,786 | $69.6M | 10.80% |
| 2 | Axcelis Technologies | ACLS | 271,989 | $36.2M | 5.62% |
| 3 | Aehr Test Systems | AEHR | 699,108 | $21.7M | 3.36% |
| 4 | Impinj, Inc. | PI | 146,275 | $19.8M | 3.08% |
| 5 | Perion Network, Ltd. | PERI | 387,170 | $15.3M | 2.38% |
| 6 | Lantheus Hldgs Inc. | LNTH | 178,540 | $14.7M | 2.29% |
| 7 | Crocs, Inc. | CROX | 105,350 | $13.3M | 2.07% |
| 8 | Deckers Outdoor Corp. | DECK | 28,280 | $12.7M | 1.97% |
| 9 | Alphatec Hldgs Inc. | ATEC | 678,530 | $10.6M | 1.64% |
| 10 | Veritiv Corp. | 923454102 | 67,490 | $9.1M | 1.42% |
| 11 | TransMedics Group, Inc. | TMDX | 108,300 | $8.2M | 1.27% |
| 12 | Belden, Inc. | BDC | 92,672 | $8.0M | 1.25% |
| 13 | Clean Harbors, Inc. | CLH | 50,835 | $7.2M | 1.12% |
| 14 | ICF International, Inc. | 44925C103 | 63,400 | $7.0M | 1.08% |
| 15 | Amphastar Pharmaceuticals, Inc | AMPH | 178,200 | $6.7M | 1.04% |
| 16 | OneSpan, Inc. | OSPN | 361,300 | $6.3M | 0.98% |
| 17 | Halozyme Therapeutics, Inc. | HALO | 164,040 | $6.3M | 0.97% |
| 18 | Ciena Corporation | CIEN | 118,305 | $6.2M | 0.96% |
| 19 | Visteon Corp. | VC | 39,400 | $6.2M | 0.96% |
| 20 | Allegro MicroSystems, Inc. | ALGM | 123,500 | $5.9M | 0.92% |
| 21 | Evolent Health, Inc. | EVH | 167,710 | $5.4M | 0.84% |
| 22 | Axonics, Inc. | 05465P101 | 95,740 | $5.2M | 0.81% |
| 23 | Everi Hldgs, Inc. | EVEX-WT | 301,300 | $5.2M | 0.80% |
| 24 | SeaWorld Entertainment Inc. | SE | 80,800 | $5.0M | 0.77% |
| 25 | Maxlinear, Inc. Class A | MXL | 140,460 | $4.9M | 0.77% |
| 26 | Model N, Inc. | 607525102 | 146,240 | $4.9M | 0.76% |
| 27 | Fabrinet | FN | 40,145 | $4.8M | 0.74% |
| 28 | Veracyte, Inc. | VCYT | 212,180 | $4.7M | 0.73% |
| 29 | RPC, Inc. | RES | 614,785 | $4.7M | 0.73% |
| 30 | Cabot Corp. | CBT | 60,351 | $4.6M | 0.72% |
| 31 | Bel Fuse, Inc. | BELFB | 121,500 | $4.6M | 0.71% |
| 32 | Synaptics, Inc. | SYNA | 40,260 | $4.5M | 0.69% |
| 33 | Ultra Clean Holdings | UCTT | 132,700 | $4.4M | 0.68% |
| 34 | Tactile Sys Technology, Inc. | 87357P100 | 259,550 | $4.3M | 0.66% |
| 35 | Inmode Ltd. | INMD | 129,000 | $4.1M | 0.64% |
| 36 | Treace Medical Concepts, Inc. | 89455T109 | 154,300 | $3.9M | 0.60% |
| 37 | ADMA Biologics, Inc. | ADMA | 1,169,500 | $3.9M | 0.60% |
| 38 | Extreme Networks, Inc. | EXTR | 201,000 | $3.8M | 0.60% |
| 39 | Cadence Design System, Inc. | CDNS | 17,700 | $3.7M | 0.58% |
| 40 | NerdWallet, Inc. | NRDS | 229,700 | $3.7M | 0.58% |
| 41 | Sterling Construction Co., Inc | STRL | 97,900 | $3.7M | 0.58% |
| 42 | Playa Hotels & Resorts N.V. | N70544106 | 383,200 | $3.7M | 0.57% |
| 43 | Silicon Laboratories, Inc. | SLAB | 20,810 | $3.6M | 0.57% |
| 44 | The Chefs Warehouse, Inc. | 163086101 | 103,600 | $3.5M | 0.55% |
| 45 | Inter Parfums | INTR | 24,400 | $3.5M | 0.54% |
| 46 | Camtek, Ltd. | CAMT | 117,680 | $3.3M | 0.52% |
| 47 | Alteryx, Inc. Com Cl A | 02156B103 | 56,350 | $3.3M | 0.51% |
| 48 | A10 Networks, Inc. | ATEN | 213,700 | $3.3M | 0.51% |
| 49 | Calix, Inc. | CALX | 61,100 | $3.3M | 0.51% |
| 50 | Aviat Networks, Inc. | AVNW | 94,507 | $3.3M | 0.51% |
| 51 | Franklin Electric | FELE | 34,500 | $3.2M | 0.50% |
| 52 | SunOpta, Inc. | STKL | 420,800 | $3.2M | 0.50% |
| 53 | Merit Medical System Inc | 589889104 | 43,800 | $3.2M | 0.50% |
| 54 | Formfactor Inc. | FORM | 101,500 | $3.2M | 0.50% |
| 55 | Maximus, Inc. | MMS | 40,800 | $3.2M | 0.50% |
| 56 | EZCorp, Inc. | EZPW | 371,500 | $3.2M | 0.50% |
| 57 | Federal Signal Corp. | FSS | 58,300 | $3.2M | 0.49% |
| 58 | Boot Barn Hldgs, Inc. | BOOT | 41,200 | $3.2M | 0.49% |
| 59 | Macom Technology Solutions | 55405Y100 | 44,100 | $3.1M | 0.48% |
| 60 | CECO Environmental Corp. | CECO | 222,600 | $3.1M | 0.48% |
| 61 | SiTime Corporation | SITM | 21,800 | $3.1M | 0.48% |
| 62 | Option Care Health Inc. | OPCH | 97,400 | $3.1M | 0.48% |
| 63 | V2X, Inc. | VVX | 77,800 | $3.1M | 0.48% |
| 64 | MGP Ingredients, Inc. | MGPI | 31,950 | $3.1M | 0.48% |
| 65 | Haemonetics Corp. | HAE | 36,900 | $3.1M | 0.47% |
| 66 | Allison Transmission Holdings, | ALSN | 66,400 | $3.0M | 0.47% |
| 67 | Topgolf Callaway Brands Corp. | 131193104 | 138,300 | $3.0M | 0.46% |
| 68 | SP Plus Corporation | 78469C103 | 86,800 | $3.0M | 0.46% |
| 69 | Dada Nexus Limited | 23344D108 | 350,712 | $3.0M | 0.46% |
| 70 | ATI, Inc. | ATI | 72,900 | $2.9M | 0.45% |
| 71 | Quaker Chemical Corporation | 747316107 | 14,400 | $2.9M | 0.44% |
| 72 | Preferred Bank | 740367404 | 51,500 | $2.8M | 0.44% |
| 73 | Photronics, Inc. | PLAB | 169,300 | $2.8M | 0.44% |
| 74 | O-I Glass, Inc. | OI | 120,000 | $2.7M | 0.42% |
| 75 | Applied Industrial | AIT | 18,800 | $2.7M | 0.41% |
| 76 | Monarch Casino & Resort, Inc. | MCRI | 35,400 | $2.6M | 0.41% |
| 77 | Franklin Covey Co. | FC | 68,200 | $2.6M | 0.41% |
| 78 | ABM Industries, Inc. | 000957100 | 57,900 | $2.6M | 0.40% |
| 79 | Blue Bird Corporation | BLBD | 127,300 | $2.6M | 0.40% |
| 80 | Oxford Inds, Inc. | 691497309 | 24,600 | $2.6M | 0.40% |
| 81 | PDC Energy, Inc. | 69327R101 | 39,960 | $2.6M | 0.40% |
| 82 | Haynes Intl, Inc. | 420877201 | 50,900 | $2.5M | 0.40% |
| 83 | ACM Research, Inc. Class A | 00108J109 | 215,600 | $2.5M | 0.39% |
| 84 | LSI Industries Inc. | 50216C108 | 180,700 | $2.5M | 0.39% |
| 85 | Acadia Healthcare Co., Inc. | ACHC | 34,800 | $2.5M | 0.39% |
| 86 | Earthstone Energy Inc. | 27032D304 | 191,900 | $2.5M | 0.39% |
| 87 | H&E Equipment Services, Inc. | 404030108 | 55,800 | $2.5M | 0.38% |
| 88 | Catalyst Pharmaceuticals, Inc. | CPRX | 147,400 | $2.4M | 0.38% |
| 89 | Employers Holdings, Inc. | EIG | 57,900 | $2.4M | 0.37% |
| 90 | International Money Express, I | INTR | 91,800 | $2.4M | 0.37% |
| 91 | Hexcel Corporation | 428291108 | 34,600 | $2.4M | 0.37% |
| 92 | Insperity, Inc. | NSP | 19,100 | $2.3M | 0.36% |
| 93 | Zeta Global Holdings Corp. | ZETA | 213,300 | $2.3M | 0.36% |
| 94 | Destination XL Group, Inc. | DXLG | 410,617 | $2.3M | 0.35% |
| 95 | MINISO Group Holding Limited | MSOGF | 126,800 | $2.2M | 0.35% |
| 96 | Kontoor Brands, Inc. | KTB | 46,300 | $2.2M | 0.35% |
| 97 | Vishay Precision Group | VPG | 53,400 | $2.2M | 0.35% |
| 98 | Alight, Inc. | ALIT | 241,756 | $2.2M | 0.35% |
| 99 | Harmonic, Inc. | HLIT | 152,500 | $2.2M | 0.35% |
| 100 | Scansource, Inc. | SCSC | 72,900 | $2.2M | 0.34% |
| 101 | Modine Mfg Co Com | 607828100 | 95,800 | $2.2M | 0.34% |
| 102 | New Relic, Inc. | 64829B100 | 29,300 | $2.2M | 0.34% |
| 103 | Allied Motion Technologies | ALNT | 56,600 | $2.2M | 0.34% |
| 104 | Comstock Res | LODE | 202,624 | $2.2M | 0.34% |
| 105 | International Seaways, Inc. | INSW | 51,400 | $2.1M | 0.33% |
| 106 | Janus International Group, Inc | JBI | 212,000 | $2.1M | 0.32% |
| 107 | Adtran, Inc. | ADTN | 131,300 | $2.1M | 0.32% |
| 108 | Avid Technology, Inc. | 05367P100 | 65,000 | $2.1M | 0.32% |
| 109 | Heritage Financial Corporation | 42722X106 | 95,896 | $2.1M | 0.32% |
| 110 | FirstCash Holdings, Inc | FCFS | 21,400 | $2.0M | 0.32% |
| 111 | UNUM Group | UNMA | 51,000 | $2.0M | 0.31% |
| 112 | Granite Construction | GVA | 47,500 | $2.0M | 0.30% |
| 113 | Patterson-Uti Energy, Inc. | PTEN | 163,894 | $1.9M | 0.30% |
| 114 | Pinduoduo Inc. | PDD | 25,000 | $1.9M | 0.29% |
| 115 | Clearwater Paper Corp | CLW | 56,500 | $1.9M | 0.29% |
| 116 | Guess, Inc | 401617105 | 96,200 | $1.9M | 0.29% |
| 117 | Mercantile Bank Corp. | 587376104 | 60,034 | $1.8M | 0.28% |
| 118 | Titan Machinery, Inc. | KMCM | 60,100 | $1.8M | 0.28% |
| 119 | Pdf Solutions, Inc. | PDFS | 43,000 | $1.8M | 0.28% |
| 120 | 2U, Inc. | 90214J101 | 264,300 | $1.8M | 0.28% |
| 121 | Univar Solutions, Inc. | 91336L107 | 51,600 | $1.8M | 0.28% |
| 122 | Matador Resources Company | MTDR | 37,400 | $1.8M | 0.28% |
| 123 | Amylyx Pharmaceuticals, Inc. | AMLX | 60,305 | $1.8M | 0.27% |
| 124 | Washington Federal, Inc. | WAFDP | 58,200 | $1.8M | 0.27% |
| 125 | Weatherford International PLC | G48833118 | 29,300 | $1.7M | 0.27% |
| 126 | Dynavax Technologies Corp. | 268158201 | 176,900 | $1.7M | 0.27% |
| 127 | VSE Corp. | VSECU | 38,500 | $1.7M | 0.27% |
| 128 | Alta Equipment Group, Inc. | ALTG-PA | 108,000 | $1.7M | 0.27% |
| 129 | MRC Global, Inc. | 55345K103 | 175,300 | $1.7M | 0.26% |
| 130 | Magnolia Oil & Gas Corp. | MGY | 77,400 | $1.7M | 0.26% |
| 131 | NOV, Inc. | NOV | 90,475 | $1.7M | 0.26% |
| 132 | Full House Resorts, Inc. | 359678109 | 223,143 | $1.6M | 0.25% |
| 133 | Brookline Bancorp, Inc. | 11373M107 | 150,300 | $1.6M | 0.24% |
| 134 | M/I Homes, Inc. | MHO | 24,200 | $1.5M | 0.24% |
| 135 | ShockWave Medical, Inc. | 82489T104 | 6,850 | $1.5M | 0.23% |
| 136 | MP Materials Corp. | MP | 52,600 | $1.5M | 0.23% |
| 137 | LeMaitre Vascular, Inc. | LMAT | 28,700 | $1.5M | 0.23% |
| 138 | SPDR S&P 500 ETF Trust | SPY | 3,587 | $1.5M | 0.23% |
| 139 | Texas Roadhouse | TXRH | 13,300 | $1.4M | 0.22% |
| 140 | Liberty Energy, Inc. | LBRT | 109,900 | $1.4M | 0.22% |
| 141 | Inspire Medical Systems, Inc. | 457730109 | 5,950 | $1.4M | 0.22% |
| 142 | First Merchants Corporation | FRMEP | 42,100 | $1.4M | 0.22% |
| 143 | Tencent Music Entertainment | XHLD | 155,000 | $1.3M | 0.20% |
| 144 | Nine Energy Service, Inc. | NINE | 225,200 | $1.3M | 0.19% |
| 145 | Caleres Inc. | CAL | 57,600 | $1.2M | 0.19% |
| 146 | Amtech Systems, Inc. | ASYS | 118,900 | $1.1M | 0.18% |
| 147 | Novanta, Inc. | NOVTU | 7,000 | $1.1M | 0.17% |
| 148 | KVH Industries, Inc. | 482738101 | 91,000 | $1.0M | 0.16% |
| 149 | Murphy USA, Inc. | MUSA | 4,000 | $1.0M | 0.16% |
| 150 | Apple, Inc. | AAPL | 5,479 | $903,526 | 0.14% |
| 151 | Microsoft Corp. | MSFT | 3,055 | $880,757 | 0.14% |
| 152 | Rocky Brands, Inc. | RCKY | 36,100 | $832,827 | 0.13% |
| 153 | KE Holdings, Inc. | BEKE | 40,000 | $753,600 | 0.12% |
| 154 | JP Morgan Chase & Company Inc. | VYLD | 4,092 | $533,204 | 0.08% |
| 155 | CVD Equipment Corp. | CVV | 32,300 | $429,590 | 0.07% |
| 156 | Johnson & Johnson | JNJ | 2,708 | $419,729 | 0.07% |
| 157 | The Travelers Co., Inc. | TRV | 2,229 | $382,054 | 0.06% |
| 158 | Mastercard, Inc. | MA | 965 | $350,688 | 0.05% |
| 159 | Amgen, Inc. | AMGN | 1,382 | $334,035 | 0.05% |
| 160 | Resmed Inc. | RSMDF | 1,450 | $317,536 | 0.05% |
| 161 | Newmont Mining | NEMCL | 5,896 | $289,046 | 0.04% |
| 162 | RF Industries Ltd. | 749552105 | 63,100 | $277,640 | 0.04% |
| 163 | Grupo Aeroportuario del Centro | 400501102 | 3,000 | $268,530 | 0.04% |
| 164 | Viad Corp. | 92552R406 | 11,886 | $247,704 | 0.04% |
| 165 | McDonald's Corporation | MCD | 840 | $234,745 | 0.04% |
| 166 | Wal Mart Stores Inc. | WMT | 1,587 | $233,932 | 0.04% |
| 167 | Controladora Vuela Comp de Avi | 21240E105 | 18,600 | $231,384 | 0.04% |
| 168 | Eli Lilly & Company | LLY | 609 | $209,109 | 0.03% |
| 169 | Amazon.com | AMZN | 2,000 | $206,580 | 0.03% |
| 170 | American Power Corp | 02906T107 | 10,000 | $0 | 0.00% |
| 171 | Avatar Ventures | 05350B100 | 10,000 | $0 | 0.00% |
| 172 | Xenacare Hldgs, Inc. | 98401A106 | 140,000 | $0 | 0.00% |
| 173 | AMR Corp Escrow | 001ESC102 | 18,000 | $0 | 0.00% |
| 174 | Titan Oil & Gas, Inc. | KMCM | 10,000 | $0 | 0.00% |