Oberweis Asset Management
LISLE, ILfiles as OBERWEIS ASSET MANAGEMENT INC/
$4.8bn in 176 US stocks at the end of 30 June 2026. The top 10 are 26.6% of the money. It changed about 23.6% of the portfolio this quarter.
Value
$4.8bn
Stocks
176
Top 10 share
26.6%
Turnover
23.6%
What changed this quarter
New
Bought for the first time this quarter.
- MaxlinearMXL0.8% of the fund
- NovantaNOVT0.8% of the fund
- BillionToOneBLLN0.7% of the fund
- Element SolutionsESI0.7% of the fund
- OusterOUST0.7% of the fund
- CognexCGNX0.6% of the fund
- Granite ConstructionGVA0.6% of the fund
- PDF SolutionsPDFS0.6% of the fund
- MYR GroupMYRG0.6% of the fund
- Kodiak Gas ServicesKGS0.6% of the fund
- Omada HealthOMDA0.5% of the fund
- Willdan GroupWLDN0.4% of the fund
- FormfactorFORM0.4% of the fund
- Watts Water TechnologiesWTS0.4% of the fund
- OpenlaneOPLN0.4% of the fund
- TrimasTRS0.3% of the fund
- InnodataINOD0.3% of the fund
- V2XVVX0.2% of the fund
- KforceKFRC0.2% of the fund
- ExproXPRO0.1% of the fund
- Chefs' WarehouseCHEF0.1% of the fund
- IntelINTC<0.1% of the fund
- Eli LillyLLY<0.1% of the fund
Added
Bought more of a stock they already held.
- Silicon Motion TechnologySIMO2.2% of the fund+12%
- BrightSpring Health ServicesBTSG1.7% of the fund+2%
- Hinge HealthHNGE1.5% of the fund+84%
- Lattice SemiconductorLSCC1.2% of the fund+5%
- VeracyteVCYT1.1% of the fund+5%
- Powell IndustriesPOWL1.1% of the fund+75%
- Life Time Group HoldingsLTH1.0% of the fund+3%
- Rush Street InteractiveRSI1.0% of the fund+13%
- Dutch BrosBROS1.0% of the fund+10%
- Clean HarborsCLH0.9% of the fund+6%
- Solaris Energy InfrastructureSEI0.9% of the fund+6%
- Diodes INC /delDIOD0.9% of the fund+84%
- ArcosaACA0.9% of the fund+10%
- Blue BirdBLBD0.9% of the fund+36%
- CamtekCAMT0.9% of the fund+14%
- LivaNovaLIVN0.8% of the fund+55%
- American SuperconductorAMSC0.8% of the fund+16%
- Globus MedicalGMED0.8% of the fund+31%
- Viavi SolutionsVIAV0.8% of the fund+34%
- MoogMOG-A0.8% of the fund+93%
- LittelfuseLFUS0.8% of the fund+11%
- Remitly GlobalRELY0.7% of the fund+8%
- ICU MedicalICUI0.7% of the fund+16%
- Levi StraussLEVI0.7% of the fund+16%
- Merit Medical SystemsMMSI0.7% of the fund+12%
Cut
Sold some of their stake.
- Applied OptoelectronicsAAOI5.5% of the fund-24%
- MACOM Technology Solutions HoldingsMTSI1.4% of the fund-17%
- Lumentum HoldingsLITE1.3% of the fund-73%
- NovaNVMI1.2% of the fund-21%
- SkywestSKYW0.8% of the fund-2%
- DanaDAN0.7% of the fund-18%
- Tutor PeriniTPC0.6% of the fund-18%
- BOXBOX0.4% of the fund-4%
- ArganAGX0.3% of the fund-37%
- Zeta Global HoldingsZETA0.3% of the fund-6%
- Pediatrix Medical GroupMD0.3% of the fund-11%
- FastlyFSLY0.3% of the fund-20%
- Grand Canyon EducationLOPE0.3% of the fund-21%
- ImaxIMAX0.3% of the fund-43%
- Catalyst Pharmaceuticals0.2% of the fund-62%
- Vita Coco CompanyCOCO0.1% of the fund-46%
- CaterpillarCAT<0.1% of the fund-20%
- H World GroupHTHT<0.1% of the fund-67%
Sold out
Sold their entire stake.
- FlowserveFLS-100%
- Primoris ServicesPRIM-100%
- GenpactG-100%
- Alphatec HoldingsATEC-100%
- National Vision HoldingsEYE-100%
- PegasystemsPEGA-100%
- American Eagle OutfittersAEO-100%
- GeneDx HoldingsWGS-100%
- Shake ShackSHAK-100%
- Mirion TechnologiesMIR-100%
- ImpinjPI-100%
- QualysQLYS-100%
- ArtivionAORT-100%
- ExproXPRO-100%
- Thermon Group Hldgs-100%
- Lincoln Educational ServicesLINC-100%
- CRA InternationalCRAI-100%
- Huron Consulting GroupHURN-100%
- Tactile Systems TechnologyTCMD-100%
- CourseraCOUR-100%
- Black Rock Coffee BarBRCB-100%
- Climb Global SolutionsCLMB-100%
- Futu HldgsFUTU-100%
- Weave CommunicationsWEAV-100%
- Spdr Gold TRGLD-100%
Holdings
- Silicon Motion TechnologySIMO
- Share
- 2.2%
- Value
- $105m
- Shares
- 316,350
+12%
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| Credo Technology Group HoldingCRDO | 5.7% | $276m | 1,013,428 | Held |
| Applied OptoelectronicsAAOI | 5.5% | $265m | 1,791,127 | -24% |
| DigitalOcean HoldingsDOCN | 3.0% | $146m | 930,005 | Held |
| Silicon Motion TechnologySIMO | 2.2% | $105m | 316,350 | +12% |
| Ultra Clean HoldingsUCTT | 1.9% | $92m | 647,276 | Held |
| SharkNinjaSN | 1.9% | $90m | 593,500 | Held |
| SitimeSITM | 1.8% | $89m | 119,501 | Held |
| BrightSpring Health ServicesBTSG | 1.7% | $83m | 1,185,280 | +2% |
| Hinge HealthHNGE | 1.5% | $71m | 855,476 | +84% |
| RambusRMBS | 1.4% | $70m | 527,016 | Held |
| MACOM Technology Solutions HoldingsMTSI | 1.4% | $68m | 179,356 | -17% |
| Lumentum HoldingsLITE | 1.3% | $62m | 72,185 | -73% |
| Lattice SemiconductorLSCC | 1.2% | $60m | 391,816 | +5% |
| NovaNVMI | 1.2% | $59m | 108,675 | -21% |
| Carpenter TechnologyCRS | 1.2% | $58m | 93,273 | Held |
| FrontdoorFTDR | 1.2% | $56m | 719,060 | Held |
| Everus Construction GroupECG | 1.1% | $54m | 328,183 | Held |
| VeracyteVCYT | 1.1% | $52m | 877,734 | +5% |
| Powell IndustriesPOWL | 1.1% | $51m | 179,521 | +75% |
| Life Time Group HoldingsLTH | 1.0% | $49m | 1,189,620 | +3% |
| Rush Street InteractiveRSI | 1.0% | $48m | 1,627,930 | +13% |
| Mercury SystemsMRCY | 1.0% | $48m | 392,723 | Held |
| Dutch BrosBROS | 1.0% | $47m | 656,093 | +10% |
| Clean HarborsCLH | 0.9% | $46m | 153,475 | +6% |
| Solaris Energy InfrastructureSEI | 0.9% | $45m | 564,581 | +6% |
| Diodes INC /delDIOD | 0.9% | $45m | 413,750 | +84% |
| ArcosaACA | 0.9% | $43m | 295,450 | +10% |
| Blue BirdBLBD | 0.9% | $42m | 529,838 | +36% |
| CamtekCAMT | 0.9% | $41m | 253,380 | +14% |
| LivaNovaLIVN | 0.8% | $41m | 500,150 | +55% |
| American SuperconductorAMSC | 0.8% | $41m | 987,500 | +16% |
| MaxlinearMXL | 0.8% | $41m | 319,500 | New |
| Globus MedicalGMED | 0.8% | $40m | 512,100 | +31% |
| NovantaNOVT | 0.8% | $40m | 244,260 | New |
| SkywestSKYW | 0.8% | $38m | 383,799 | -2% |
| Viavi SolutionsVIAV | 0.8% | $38m | 793,600 | +34% |
| MoogMOG-A | 0.8% | $37m | 86,735 | +93% |
| LittelfuseLFUS | 0.8% | $36m | 79,800 | +11% |
| Arcutis BiotherapeuticsARQT | 0.7% | $36m | 1,372,941 | Held |
| FirstCash HoldingsFCFS | 0.7% | $36m | 166,105 | Held |
| BillionToOneBLLN | 0.7% | $36m | 299,030 | New |
| DanaDAN | 0.7% | $36m | 1,318,300 | -18% |
| Element SolutionsESI | 0.7% | $35m | 740,100 | New |
| AARAIR | 0.7% | $35m | 246,325 | Held |
| Remitly GlobalRELY | 0.7% | $35m | 1,570,400 | +8% |
| ICU MedicalICUI | 0.7% | $35m | 237,050 | +16% |
| Federal SignalFSS | 0.7% | $35m | 269,084 | Held |
| OusterOUST | 0.7% | $34m | 545,810 | New |
| Levi StraussLEVI | 0.7% | $34m | 1,358,100 | +16% |
| Merit Medical SystemsMMSI | 0.7% | $33m | 473,409 | +12% |
| AssurantAIZ | 0.7% | $33m | 122,100 | +19% |
| Waystar HoldingWAY | 0.7% | $33m | 1,589,364 | +36% |
| Ceco EnvironmentalCECO | 0.7% | $32m | 358,072 | +165% |
| LiquidiaLQDA | 0.7% | $32m | 406,400 | +9% |
| Encompass HealthEHC | 0.7% | $32m | 316,886 | +9% |
| Indivior PharmaceuticalsINDV | 0.7% | $32m | 779,188 | +19% |
| CognexCGNX | 0.6% | $31m | 427,820 | New |
| Granite ConstructionGVA | 0.6% | $31m | 193,090 | New |
| PDF SolutionsPDFS | 0.6% | $30m | 426,400 | New |
| Envista HoldingsNVST | 0.6% | $30m | 1,120,782 | +68% |
| DaveDAVE | 0.6% | $29m | 78,902 | +18% |
| AmbarellaAMBA | 0.6% | $29m | 342,254 | +16% |
| NlightLASR | 0.6% | $29m | 413,310 | +14% |
| MYR GroupMYRG | 0.6% | $27m | 54,190 | New |
| Adaptive BiotechnologiesADPT | 0.6% | $27m | 1,258,751 | +56% |
| Leonardo DRSDRS | 0.6% | $27m | 628,486 | +40% |
| Tutor PeriniTPC | 0.6% | $27m | 323,200 | -18% |
| Kodiak Gas ServicesKGS | 0.6% | $27m | 355,870 | New |
| Kiniksa Pharmaceuticals InternationalKNSA | 0.5% | $26m | 413,034 | +30% |
| Chime FinancialCHYM | 0.5% | $26m | 1,268,330 | +22% |
| Alignment HealthcareALHC | 0.5% | $26m | 1,089,600 | +13% |
| Halozyme TherapeuticsHALO | 0.5% | $25m | 321,030 | +46% |
| iRhythm HoldingsIRTC | 0.5% | $24m | 202,004 | +29% |
| Ameris BancorpABCB | 0.5% | $24m | 264,600 | Held |
| Zurn Elkay Water SolutionsZWS | 0.5% | $24m | 468,453 | +33% |
| OSI SystemsOSIS | 0.5% | $23m | 107,143 | Held |
| Omada HealthOMDA | 0.5% | $23m | 1,048,800 | New |
| Urban OutfittersURBN | 0.5% | $22m | 316,192 | Held |
| ANI PharmaceuticalsANIP | 0.5% | $22m | 265,306 | +20% |
| EzcorpEZPW | 0.5% | $22m | 631,800 | Held |
| Core Natural ResourcesCNR | 0.4% | $22m | 271,170 | Held |
| DucommunDCO | 0.4% | $21m | 113,800 | +14% |
| Skyward Specialty Insurance GroupSKWD | 0.4% | $21m | 359,100 | +10% |
| Willdan GroupWLDN | 0.4% | $21m | 262,700 | New |
| A10 NetworksATEN | 0.4% | $21m | 552,000 | +9% |
| HealthequityHQY | 0.4% | $21m | 228,291 | +37% |
| Super Group (SGHC)SGHC | 0.4% | $21m | 1,521,000 | Held |
| SPX TechnologiesSPXC | 0.4% | $21m | 83,811 | Held |
| FormfactorFORM | 0.4% | $20m | 127,330 | New |
| Watts Water TechnologiesWTS | 0.4% | $20m | 50,840 | New |
| OpenlaneOPLN | 0.4% | $20m | 480,580 | New |
| Q2 HoldingsQTWO | 0.4% | $20m | 410,409 | +4% |
| BOXBOX | 0.4% | $20m | 743,000 | -4% |
| VSEVSEC | 0.4% | $20m | 86,098 | +153% |
| Benchmark ElectronicsBHE | 0.4% | $20m | 198,300 | Held |
| New York TimesNYT | 0.4% | $19m | 277,050 | +31% |
| Advanced Energy IndustriesAEIS | 0.4% | $18m | 49,423 | Held |
| Eton PharmaceuticalsETON | 0.4% | $18m | 501,600 | +14% |
| AxogenAXGN | 0.4% | $18m | 388,194 | +13% |
| FabrinetFN | 0.4% | $17m | 30,373 | Held |
Showing the largest 100 of 176.
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is up 110.5% since 30 June 2025.
Where the money is
Technology43.7%
Industrials16.9%
Health care15.6%
Retail & consumer12.5%
Financial services5.1%
Energy1.7%
Materials0.7%
Media & telecom0.7%
Utilities0.6%
Everyday goods0.2%
Other2.4%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.