Oberweis Funds. Holdings as of Jun 30, 2026, from Form N-PORT.
Share of net assets at the report date, for the whole fund across all share classes.
| Holding | Weight | Value | Shares or units |
|---|---|---|---|
| Silicon Motion Technology CorpSIMO, Other | 6.29% | $101.60M | 304,800 |
| Ultra Clean Holdings IncUCTT | 5.49% | $88.59M | 621,300 |
| Applied Optoelectronics IncAAOI | 4.85% | $78.34M | 528,758 |
| Powell Industries IncPOWL | 3.07% | $49.63M | 173,300 |
| Diodes IncDIOD | 2.71% | $43.71M | 399,400 |
| Rush Street Interactive IncRSI | 2.67% | $43.14M | 1,450,600 |
| Blue Bird CorpBLBD | 2.50% | $40.38M | 511,400 |
| Camtek Ltd/Israel | 2.47% | $39.90M | 244,580 |
| MaxLinear IncMXL | 2.45% | $39.50M | 308,500 |
| American Superconductor CorpAMSC | 2.38% | $38.41M | 925,300 |
| LivaNova PLCLIVN | 2.28% | $36.78M | 447,300 |
| Ouster IncOUST | 2.05% | $33.04M | 528,410 |
| CECO Environmental CorpCECO | 1.94% | $31.36M | 345,645 |
| Liquidia CorpLQDA | 1.94% | $31.26M | 392,100 |
| PDF Solutions IncPDFS | 1.81% | $29.15M | 411,800 |
| Dave IncDAVE | 1.76% | $28.40M | 76,222 |
| nLight IncLASR | 1.72% | $27.79M | 399,200 |
| Adaptive Biotechnologies CorpADPT | 1.61% | $26.07M | 1,215,600 |
| Ambarella IncAMBA | 1.61% | $25.94M | 302,369 |
| Tutor Perini CorpTPC | 1.60% | $25.88M | 311,900 |
| Kiniksa Pharmaceuticals Intern | 1.54% | $24.93M | 389,800 |
| Omada Health IncOMDA | 1.38% | $22.22M | 1,012,400 |
| ANI Pharmaceuticals IncANIP | 1.31% | $21.22M | 256,300 |
| EZCORP IncEZPW | 1.31% | $21.19M | 612,900 |
| Ducommun IncDCO | 1.26% | $20.34M | 109,800 |
| Skyward Specialty Insurance GrSKWD | 1.25% | $20.22M | 346,500 |
| Willdan Group IncWLDN | 1.24% | $20.07M | 253,700 |
| A10 Networks IncATEN | 1.23% | $19.90M | 532,600 |
| Benchmark Electronics IncBHE | 1.18% | $19.10M | 193,600 |
| VSE CorpVSEC | 1.18% | $18.99M | 83,100 |
| Eton Pharmaceuticals IncETON | 1.08% | $17.52M | 483,900 |
| Axogen IncAXGN | 1.07% | $17.30M | 374,500 |
| Argan IncAGX | 1.01% | $16.29M | 20,400 |
| Veracyte IncVCYT | 1.00% | $16.11M | 274,300 |
| TriMas CorpTRS | 0.97% | $15.74M | 349,600 |
| Interface IncTILE | 0.94% | $15.24M | 425,300 |
| Pediatrix Medical Group IncMD | 0.94% | $15.24M | 601,700 |
| ProPetro Holding CorpPUMP | 0.94% | $15.18M | 1,058,300 |
| Fastly IncFSLY | 0.94% | $15.11M | 823,000 |
| OneSpaWorld Holdings Ltd | 0.93% | $15.07M | 533,500 |
| Arlo Technologies IncARLO | 0.88% | $14.22M | 1,055,200 |
| Innodata IncINOD | 0.86% | $13.81M | 182,700 |
| LeMaitre Vascular IncLMAT | 0.85% | $13.71M | 142,900 |
| Magnite IncMGNI | 0.83% | $13.46M | 709,000 |
| Nicolet Bankshares IncNIC | 0.82% | $13.26M | 80,200 |
| M/I Homes IncMHO | 0.80% | $12.93M | 80,400 |
| IMAX CorpIMAX | 0.78% | $12.57M | 315,400 |
| ePlus IncPLUS | 0.75% | $12.12M | 145,598 |
| Boot Barn Holdings IncBOOT | 0.72% | $11.60M | 70,600 |
| Lindblad Expeditions HoldingsLIND | 0.71% | $11.46M | 405,900 |