13F HOLDINGS REPORT
OBERWEIS ASSET MANAGEMENT INC/
Quarter ended Q1 2024 · Filed May 15, 2024 · Accession 0001213900-24-043291
Total Value
$1.38B
Positions
196
Other Managers
0
Confidential Omitted
No
Holdings (196)
| # | Issuer | Ticker / CUSIP | Shares | Value | % of Filing |
|---|---|---|---|---|---|
| 1 | Constellium NV Cl A | CSTM | 1,803,271 | $39.9M | 2.88% |
| 2 | Weatherford International PLC | G48833118 | 222,100 | $25.6M | 1.85% |
| 3 | Axcelis Technologies | ACLS | 209,339 | $23.3M | 1.69% |
| 4 | Onto Innovation, Inc. | ONTO | 106,930 | $19.4M | 1.40% |
| 5 | Alphatec Hldgs Inc. | ATEC | 1,385,880 | $19.1M | 1.38% |
| 6 | Vertiv Holdings Co. | VRT | 229,650 | $18.8M | 1.36% |
| 7 | ADMA Biologics, Inc. | ADMA | 2,790,700 | $18.4M | 1.33% |
| 8 | Amphastar Pharmaceuticals, Inc | AMPH | 417,865 | $18.3M | 1.33% |
| 9 | Skywest Inc | SKYW | 262,360 | $18.1M | 1.31% |
| 10 | Encompass Health Corporation | EHC | 204,136 | $16.9M | 1.22% |
| 11 | Silicon Motion Techn ADR | SIMO | 217,400 | $16.7M | 1.21% |
| 12 | Oshkosh Corp. | OSK | 133,827 | $16.7M | 1.21% |
| 13 | Clean Harbors, Inc. | CLH | 81,295 | $16.4M | 1.18% |
| 14 | Aerovironment, Inc. | AVAV | 101,570 | $15.6M | 1.13% |
| 15 | Camtek, Ltd. | CAMT | 178,180 | $14.9M | 1.08% |
| 16 | Veracyte, Inc. | VCYT | 671,700 | $14.9M | 1.08% |
| 17 | Ultra Clean Holdings | UCTT | 319,600 | $14.7M | 1.06% |
| 18 | TransMedics Group, Inc. | TMDX | 198,200 | $14.7M | 1.06% |
| 19 | SharkNinja, Inc. | SN | 235,200 | $14.7M | 1.06% |
| 20 | ICF International, Inc. | 44925C103 | 96,900 | $14.6M | 1.06% |
| 21 | ESAB Corporation | ESAB | 129,200 | $14.3M | 1.03% |
| 22 | Parsons Corp. | PSN | 172,140 | $14.3M | 1.03% |
| 23 | Crocs, Inc. | CROX | 95,400 | $13.7M | 0.99% |
| 24 | Nextracker, Inc. | NXT | 235,700 | $13.3M | 0.96% |
| 25 | Universal Display Corp. | OLED | 77,442 | $13.0M | 0.94% |
| 26 | Zeta Global Holdings Corp. | ZETA | 1,181,980 | $12.9M | 0.93% |
| 27 | ACM Research, Inc. Class A | 00108J109 | 441,130 | $12.9M | 0.93% |
| 28 | Flowserve Corporation | FLS | 274,378 | $12.5M | 0.91% |
| 29 | Haemonetics Corp. | HAE | 143,695 | $12.3M | 0.89% |
| 30 | Acadia Healthcare Co., Inc. | ACHC | 151,650 | $12.0M | 0.87% |
| 31 | Aehr Test Systems | AEHR | 967,852 | $12.0M | 0.87% |
| 32 | Merit Medical System Inc | 589889104 | 156,490 | $11.9M | 0.86% |
| 33 | Applied Optoelectronics Inc. | AAOI | 849,615 | $11.8M | 0.85% |
| 34 | Century Communities, Inc. | 156504300 | 121,200 | $11.7M | 0.85% |
| 35 | FirstCash Holdings, Inc | FCFS | 91,700 | $11.7M | 0.85% |
| 36 | Itron Inc | ITRI | 125,600 | $11.6M | 0.84% |
| 37 | NeoGenomics, Inc. | NEO | 737,200 | $11.6M | 0.84% |
| 38 | Blue Bird Corporation | BLBD | 299,100 | $11.5M | 0.83% |
| 39 | ACI Worldwide Inc. | ACIW | 344,562 | $11.4M | 0.83% |
| 40 | LivaNova Plc | LIVN | 202,500 | $11.3M | 0.82% |
| 41 | Integer Holdings Corporation | ITGR | 96,700 | $11.3M | 0.82% |
| 42 | Axonics, Inc. | 05465P101 | 163,570 | $11.3M | 0.82% |
| 43 | Silicon Laboratories, Inc. | SLAB | 78,000 | $11.2M | 0.81% |
| 44 | Evolent Health, Inc. | EVH | 338,940 | $11.1M | 0.80% |
| 45 | Azek Co., Inc. | 05478C105 | 220,900 | $11.1M | 0.80% |
| 46 | Federal Signal Corp. | FSS | 127,830 | $10.8M | 0.78% |
| 47 | Informatica Corp. | 45674M101 | 309,000 | $10.8M | 0.78% |
| 48 | Formfactor Inc. | FORM | 236,700 | $10.8M | 0.78% |
| 49 | CECO Environmental Corp. | CECO | 463,400 | $10.7M | 0.77% |
| 50 | Sterling Construction Co., Inc | STRL | 96,600 | $10.7M | 0.77% |
| 51 | Clear Secure, Inc. | YOU | 500,500 | $10.6M | 0.77% |
| 52 | International Seaways, Inc. | INSW | 198,700 | $10.6M | 0.76% |
| 53 | Woodward, Inc. | WWD | 68,400 | $10.5M | 0.76% |
| 54 | Janus International Group, Inc | JBI | 695,400 | $10.5M | 0.76% |
| 55 | Liveramp Hldgs, Inc. | RAMP | 295,780 | $10.2M | 0.74% |
| 56 | Veeco Instruments, Inc. | 922417100 | 269,100 | $9.5M | 0.68% |
| 57 | Primoris Services Corp. | 74164F103 | 209,900 | $8.9M | 0.65% |
| 58 | Deckers Outdoor Corp. | DECK | 9,420 | $8.9M | 0.64% |
| 59 | Frontdoor, Inc. | FTDR | 263,300 | $8.6M | 0.62% |
| 60 | American Superconductor | AMSC | 634,400 | $8.6M | 0.62% |
| 61 | e.l.f. Beauty, Inc. | ELF | 43,720 | $8.6M | 0.62% |
| 62 | MSA Safety Inc | MNESP | 44,200 | $8.6M | 0.62% |
| 63 | Grocery Outlet Hldg Corp. | GO | 296,000 | $8.5M | 0.62% |
| 64 | SPX Technologies, Inc. | SPXC | 69,000 | $8.5M | 0.61% |
| 65 | Cabot Corp. | CBT | 92,100 | $8.5M | 0.61% |
| 66 | Assurant, Inc. | AIZN | 45,000 | $8.5M | 0.61% |
| 67 | Quaker Chemical Corporation | 747316107 | 40,500 | $8.3M | 0.60% |
| 68 | Osi Systems, Inc. | OSIS | 55,300 | $7.9M | 0.57% |
| 69 | Installed Building Products, I | 45780R101 | 30,400 | $7.9M | 0.57% |
| 70 | EZCorp, Inc. | EZPW | 685,500 | $7.8M | 0.56% |
| 71 | Aviat Networks, Inc. | AVNW | 199,307 | $7.6M | 0.55% |
| 72 | Maximus, Inc. | MMS | 89,700 | $7.5M | 0.54% |
| 73 | Wingstop, Inc. | WING | 20,000 | $7.3M | 0.53% |
| 74 | Catalyst Pharmaceuticals, Inc. | CPRX | 458,400 | $7.3M | 0.53% |
| 75 | Preferred Bank | 740367404 | 95,000 | $7.3M | 0.53% |
| 76 | Playa Hotels & Resorts N.V. | N70544106 | 751,500 | $7.3M | 0.53% |
| 77 | ATI, Inc. | ATI | 141,900 | $7.3M | 0.53% |
| 78 | Photronics, Inc. | PLAB | 256,100 | $7.3M | 0.52% |
| 79 | Weave Communications, Inc. | WEAV | 609,400 | $7.0M | 0.51% |
| 80 | Limbach Hldgs, Inc. | LMB | 164,800 | $6.8M | 0.49% |
| 81 | Credo Technology Group | CRDO | 321,900 | $6.8M | 0.49% |
| 82 | Inter Parfums | INTR | 48,300 | $6.8M | 0.49% |
| 83 | RxSight, Inc. | RXST | 126,640 | $6.5M | 0.47% |
| 84 | RPC, Inc. | RES | 838,476 | $6.5M | 0.47% |
| 85 | Monarch Casino & Resort, Inc. | MCRI | 86,200 | $6.5M | 0.47% |
| 86 | G-III Apparel Group Ltd. | GIII | 220,900 | $6.4M | 0.46% |
| 87 | Krystal Biotech, Inc. | KRYS | 35,700 | $6.4M | 0.46% |
| 88 | Comfort Systems USA Inc. | 199908104 | 19,800 | $6.3M | 0.45% |
| 89 | PetlQ Inc | 71639T106 | 340,700 | $6.2M | 0.45% |
| 90 | Modine Mfg Co Com | 607828100 | 64,500 | $6.1M | 0.44% |
| 91 | Abercrombie & Fitch Co. | ANF | 48,100 | $6.0M | 0.44% |
| 92 | Trex Company, Inc. | TREX | 60,100 | $6.0M | 0.43% |
| 93 | Artivion, Inc | AORT | 282,400 | $6.0M | 0.43% |
| 94 | Allegro MicroSystems, Inc. | ALGM | 221,280 | $6.0M | 0.43% |
| 95 | Primo Water Corp. | 74167P108 | 323,500 | $5.9M | 0.43% |
| 96 | Grand Canyon Education, Inc. | LOPE | 43,200 | $5.9M | 0.43% |
| 97 | Upwork, Inc. | UPWK | 469,200 | $5.8M | 0.42% |
| 98 | Vital Energy, Inc. | 516806205 | 109,400 | $5.7M | 0.42% |
| 99 | Dynavax Technologies Corp. | 268158201 | 462,700 | $5.7M | 0.42% |
| 100 | Evolus, Inc. | EOLS | 397,300 | $5.6M | 0.40% |
| 101 | OneSpaWorld Holdings Limited | OSW | 420,400 | $5.6M | 0.40% |
| 102 | Matador Resources Company | MTDR | 82,400 | $5.5M | 0.40% |
| 103 | LeMaitre Vascular, Inc. | LMAT | 80,001 | $5.3M | 0.38% |
| 104 | VSE Corp. | VSECU | 66,300 | $5.3M | 0.38% |
| 105 | Boot Barn Hldgs, Inc. | BOOT | 54,400 | $5.2M | 0.37% |
| 106 | Simpson Manufacturing | 829073105 | 24,800 | $5.1M | 0.37% |
| 107 | SI-BONE, Inc. | SIBN | 310,400 | $5.1M | 0.37% |
| 108 | Rush Street Interactive, Inc. | RSI | 776,700 | $5.1M | 0.37% |
| 109 | M/I Homes, Inc. | MHO | 36,200 | $4.9M | 0.36% |
| 110 | Sun Country Airlines Holdings, | 866683105 | 325,600 | $4.9M | 0.36% |
| 111 | Clearwater Paper Corp | CLW | 112,200 | $4.9M | 0.35% |
| 112 | Liberty Energy, Inc. | LBRT | 236,300 | $4.9M | 0.35% |
| 113 | Magnolia Oil & Gas Corp. | MGY | 184,600 | $4.8M | 0.35% |
| 114 | Huron Consulting Group, Inc. | HURN | 49,200 | $4.8M | 0.34% |
| 115 | Rapid7, Inc. | RPD | 94,500 | $4.6M | 0.34% |
| 116 | H&E Equipment Services, Inc. | 404030108 | 69,500 | $4.5M | 0.32% |
| 117 | Helix Energy Solutions Group, | 42330P107 | 407,500 | $4.4M | 0.32% |
| 118 | Carpenter Technology Corp. | CRS | 61,800 | $4.4M | 0.32% |
| 119 | Cellebrite DI Ltd. | CLBT | 397,900 | $4.4M | 0.32% |
| 120 | Oscar Health, Inc. | OSCR | 295,000 | $4.4M | 0.32% |
| 121 | Light & Wonder Inc. | LAWIL | 42,600 | $4.3M | 0.31% |
| 122 | Skyward Specialty Ins Group | 830940102 | 115,700 | $4.3M | 0.31% |
| 123 | First Merchants Corporation | FRMEP | 123,400 | $4.3M | 0.31% |
| 124 | AAON, Inc. | AAON | 48,400 | $4.3M | 0.31% |
| 125 | Gibraltar Inds | 374689107 | 52,800 | $4.3M | 0.31% |
| 126 | Blackbaud | BLKB | 57,300 | $4.2M | 0.31% |
| 127 | Exlservice Holdings | EXLS | 133,200 | $4.2M | 0.31% |
| 128 | NOV, Inc. | NOV | 216,900 | $4.2M | 0.31% |
| 129 | Gentherm, Inc. | THRM | 73,500 | $4.2M | 0.31% |
| 130 | HealthEquity Inc. | HQY | 51,300 | $4.2M | 0.30% |
| 131 | Sprouts Farmers Markets LLC | 85208M102 | 64,700 | $4.2M | 0.30% |
| 132 | Duolingo, Inc. | DUOL | 18,900 | $4.2M | 0.30% |
| 133 | Dycom Industries, Inc. | 267475101 | 29,000 | $4.2M | 0.30% |
| 134 | Stride, Inc. | LRN | 66,000 | $4.2M | 0.30% |
| 135 | Fabrinet | FN | 21,900 | $4.1M | 0.30% |
| 136 | JELD-WEN Holding, Inc. | JELD | 192,600 | $4.1M | 0.30% |
| 137 | Cadence Design System, Inc. | CDNS | 13,100 | $4.1M | 0.29% |
| 138 | The Vita Coco Co., Inc. | COCO | 165,400 | $4.0M | 0.29% |
| 139 | Precision Drilling Corp. | PDS | 59,700 | $4.0M | 0.29% |
| 140 | Employers Holdings, Inc. | EIG | 86,100 | $3.9M | 0.28% |
| 141 | Navitas Semiconductor Corp. | NVTS | 807,400 | $3.9M | 0.28% |
| 142 | Imax Corp. | IMAX | 236,200 | $3.8M | 0.28% |
| 143 | HNI Corp. | HNI | 83,400 | $3.8M | 0.27% |
| 144 | Backblaze, Inc. | BLZE | 357,800 | $3.7M | 0.26% |
| 145 | Mannkind Corp. | MNKD | 798,800 | $3.6M | 0.26% |
| 146 | Proto Labs Inc. | PRLB | 97,500 | $3.5M | 0.25% |
| 147 | Arlo Technologies, Inc. | ARLO | 273,400 | $3.5M | 0.25% |
| 148 | Mercantile Bank Corp. | 587376104 | 89,328 | $3.4M | 0.25% |
| 149 | 1st Source Corp. | SRCE | 63,900 | $3.3M | 0.24% |
| 150 | Transcat, Inc. | TRNS | 29,100 | $3.2M | 0.23% |
| 151 | ANI Pharmaceuticals, Inc. | ANIP | 43,500 | $3.0M | 0.22% |
| 152 | Dorian LPG Ltd. | LPG | 75,500 | $2.9M | 0.21% |
| 153 | Hawkins, Inc. | HWKN | 37,200 | $2.9M | 0.21% |
| 154 | Rev Group, Inc. | 749527107 | 126,300 | $2.8M | 0.20% |
| 155 | Aris Water Solutions, Inc. | 04041L106 | 195,200 | $2.8M | 0.20% |
| 156 | Enerpac Tool Group Corp. | EPAC | 77,300 | $2.8M | 0.20% |
| 157 | The Gorman-Rupp Co. | GRC | 68,900 | $2.7M | 0.20% |
| 158 | Oxford Inds, Inc. | 691497309 | 23,400 | $2.6M | 0.19% |
| 159 | Matrix Service Co. | 576853105 | 198,500 | $2.6M | 0.19% |
| 160 | Taiwan Semiconductor ADR | 874039100 | 18,500 | $2.5M | 0.18% |
| 161 | Sweetgreen, Inc. | SG | 97,851 | $2.5M | 0.18% |
| 162 | Powell Industries Inc. | 739128106 | 16,800 | $2.4M | 0.17% |
| 163 | Quanterix Corp. | QTRX | 99,700 | $2.3M | 0.17% |
| 164 | AxoGen Inc. | AXGN | 286,400 | $2.3M | 0.17% |
| 165 | Couchbase, Inc. | 22207T101 | 87,800 | $2.3M | 0.17% |
| 166 | BJ's Restaurants, Inc. | BJRI | 63,600 | $2.3M | 0.17% |
| 167 | Liquidia Corp. | LQDA | 150,000 | $2.2M | 0.16% |
| 168 | AvePoint, Inc. | AVPT | 266,800 | $2.1M | 0.15% |
| 169 | SPDR S&P 500 ETF Trust | SPY | 3,576 | $1.9M | 0.14% |
| 170 | PDD Holdings Inc. ADR | PDD | 14,500 | $1.7M | 0.12% |
| 171 | Microsoft Corp. | MSFT | 2,725 | $1.1M | 0.08% |
| 172 | Tencent Music Entertainment AD | XHLD | 80,000 | $895,200 | 0.06% |
| 173 | Arcos Dorados Holdings, Inc. | ARCO | 78,600 | $874,032 | 0.06% |
| 174 | JP Morgan Chase & Company Inc. | VYLD | 3,804 | $762,021 | 0.06% |
| 175 | Li Auto, Inc. ADR | LAAOF | 23,000 | $696,440 | 0.05% |
| 176 | MINISO Group Holding Limited A | MSOGF | 30,000 | $615,000 | 0.04% |
| 177 | MakeMyTrip Ltd. | MMYT | 8,600 | $611,030 | 0.04% |
| 178 | Apple, Inc. | AAPL | 3,381 | $579,826 | 0.04% |
| 179 | VTEX | VTEX | 66,500 | $543,305 | 0.04% |
| 180 | The Travelers Co., Inc. | TRV | 2,036 | $468,600 | 0.03% |
| 181 | Kanzhun Limited ADR | BZ | 25,000 | $438,250 | 0.03% |
| 182 | Mastercard, Inc. | MA | 776 | $373,505 | 0.03% |
| 183 | Johnson & Johnson | JNJ | 2,167 | $342,865 | 0.02% |
| 184 | Legend Biotech Corp. ADR | LEGN | 6,000 | $336,540 | 0.02% |
| 185 | Amgen, Inc. | AMGN | 1,070 | $304,262 | 0.02% |
| 186 | Resmed Inc. | RSMDF | 1,450 | $287,144 | 0.02% |
| 187 | Tal Education Group ADR | TAL | 25,000 | $283,750 | 0.02% |
| 188 | Despegar Com Corp. | G27358103 | 22,500 | $269,100 | 0.02% |
| 189 | BBB Foods, Inc. | TBBB | 11,000 | $261,580 | 0.02% |
| 190 | Celsius Hldgs Inc. | CELH | 3,000 | $248,760 | 0.02% |
| 191 | Amer Sports, Inc. | AS | 15,000 | $244,500 | 0.02% |
| 192 | McDonald's Corporation | MCD | 844 | $238,009 | 0.02% |
| 193 | Merck & Co. | MRK | 1,730 | $228,274 | 0.02% |
| 194 | Toyota Motor Corp. ADR | TOYOF | 805 | $202,654 | 0.01% |
| 195 | Xenacare Hldgs, Inc. | 98401A106 | 140,000 | $0 | 0.00% |
| 196 | AMR Corp Escrow | 001ESC102 | 18,000 | $0 | 0.00% |