Portolan Capital Management
BOSTON, MAfiles as Portolan Capital Management, LLC
$2.7bn in 148 US stocks at the end of 30 June 2026. The top 10 are 29.0% of the money. It changed about 40.7% of the portfolio this quarter.
Value
$2.7bn
Stocks
148
Top 10 share
29.0%
Turnover
40.7%
What changed this quarter
New
Bought for the first time this quarter.
- Penguin SolutionsPENG1.6% of the fund
- Sportradar Group AGSRAD1.0% of the fund
- BandwidthBAND1.0% of the fund
- Kontoor BrandsKTB0.9% of the fund
- Encore Capital GroupECPG0.9% of the fund
- BlackberryBB0.8% of the fund
- International Flavors & FragrancesIFF0.8% of the fund
- Vishay IntertechnologyVSH0.7% of the fund
- Gates IndustrialGTES0.7% of the fund
- CohuCOHU0.6% of the fund
- Tenable HoldingsTENB0.5% of the fund
- GE HealthCare TechnologiesGEHC0.5% of the fund
- Crane NXTCXT0.5% of the fund
- MarinemaxHZO0.5% of the fund
- QuantumQMCO0.4% of the fund
- FerrariRACE0.4% of the fund
- Boot Barn HoldingsBOOT0.4% of the fund
- Halozyme TherapeuticsHALO0.4% of the fund
- SweetgreenSG0.3% of the fund
- A10 NetworksATEN0.3% of the fund
- Tecnoglass HoldingsTGLS0.3% of the fund
- SilicomSILC0.3% of the fund
- RB GlobalRBA0.3% of the fund
- XometryXMTR0.3% of the fund
- MaterionMTRN0.2% of the fund
Added
Bought more of a stock they already held.
- Virtu FinancialVIRT4.8% of the fund+77%
- QualysQLYS2.7% of the fund+122%
- Shift4 PaymentsFOUR2.0% of the fund+420%
- Mayville Engineering CompanyMEC1.8% of the fund+58%
- Enova InternationalENVA1.8% of the fund+146%
- United TherapeuticsUTHR1.7% of the fund+29%
- Genius SportsGENI1.6% of the fund+152%
- AllientALNT1.4% of the fund+11%
- Porch GroupPRCH1.4% of the fund+15%
- Candel TherapeuticsCADL1.3% of the fund+21%
- Talen EnergyTLN1.3% of the fund+11%
- Regal RexnordRRX1.2% of the fund+155%
- BiogenBIIB1.2% of the fund+21%
- Veeco InstrumentsVECO1.1% of the fund+59%
- Luxexperience BVLUXE1.1% of the fund+9%
- Zeta Global HoldingsZETA1.1% of the fund+209%
- Warby ParkerWRBY1.0% of the fund+69%
- OshkoshOSK0.9% of the fund+767%
- TwilioTWLO0.9% of the fund+54%
- SezzleSEZL0.9% of the fund+94%
- Remitly GlobalRELY0.9% of the fund+46%
- ACM ResearchACMR0.8% of the fund+113%
- Element SolutionsESI0.8% of the fund+112%
- Pulse BiosciencesPLSE0.8% of the fund+3%
- MoogMOG-A0.8% of the fund+67%
Cut
Sold some of their stake.
- TTM TechnologiesTTMI3.6% of the fund-30%
- Modine ManufacturingMOD3.1% of the fund-24%
- SemtechSMTC1.8% of the fund-11%
- CelesticaCLS1.7% of the fund-36%
- Powell IndustriesPOWL1.6% of the fund-36%
- FlexFLEX1.4% of the fund-48%
- Akamai TechnologiesAKAM1.4% of the fund-27%
- Lantheus HoldingsLNTH1.2% of the fund-31%
- Cellebrite DICLBT1.1% of the fund-11%
- Canada Goose HoldingsGOOS1.0% of the fund-15%
- NokiaNOK0.8% of the fund-31%
- the Real Brokerage0.8% of the fund-24%
- PAR Pacific HoldingsPARR0.7% of the fund-51%
- Mama's CreationsMAMA0.7% of the fund-16%
- BEL FuseBELFB0.6% of the fund-10%
- JabilJBL0.6% of the fund-50%
- AdeiaADEA0.5% of the fund-39%
- Ranpak HoldingsPACK0.5% of the fund-3%
- BaiduBIDU0.4% of the fund-74%
- Digi InternationalDGII0.4% of the fund-17%
- NlightLASR0.4% of the fund-33%
- Lightpath TechnologiesLPTH0.4% of the fund-40%
- Okeanis Eco TankersECO0.4% of the fund-64%
- AmbarellaAMBA0.3% of the fund-11%
- QuanterixQTRX0.3% of the fund-36%
Sold out
Sold their entire stake.
- PBF EnergyPBF-100%
- Crescent EnergyCRGY-100%
- Core Natural ResourcesCNR-100%
- Murphy USAMUSA-100%
- Circle Internet GroupCRCL-100%
- Primoris ServicesPRIM-100%
- UpworkUPWK-100%
- Repay HoldingsRPAY-100%
- Axcelis TechnologiesACLS-100%
- Vnet GroupVNET-100%
- Northern Oil & GasNOG-100%
- BlacklineBL-100%
- Century AluminumCENX-100%
- Miami International HoldingsMIAX-100%
- AeroVironmentAVAV-100%
- XpengXPEV-100%
- PersonalisPSNL-100%
- i3 VerticalsIIIV-100%
- ProPetro HoldingPUMP-100%
- Forgent Power SolutionsFPS-100%
- DraganflyDPRO-100%
- Green DOTGDOT-100%
- Sprout SocialSPT-100%
- Exzeo GroupXZO-100%
- AmplitudeAMPL-100%
Holdings
- Luxexperience BVLUXE
- Share
- 1.1%
- Value
- $30m
- Shares
- 4,053,147
+9%
- NokiaNOK
- Share
- 0.8%
- Value
- $22m
- Shares
- 1,645,761
-31%
- the Real Brokerage
- Share
- 0.8%
- Value
- $20m
- Shares
- 11,042,364
-24%
- BaiduBIDU
- Share
- 0.4%
- Value
- $11m
- Shares
- 95,863
-74%
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| Vishay Precision GroupVPG | 5.7% | $151m | 1,008,167 | Held |
| Virtu FinancialVIRT | 4.8% | $128m | 2,142,215 | +77% |
| TTM TechnologiesTTMI | 3.6% | $95m | 507,838 | -30% |
| Modine ManufacturingMOD | 3.1% | $84m | 313,683 | -24% |
| QualysQLYS | 2.7% | $73m | 529,807 | +122% |
| Shift4 PaymentsFOUR | 2.0% | $54m | 1,114,116 | +420% |
| Mayville Engineering CompanyMEC | 1.8% | $49m | 1,299,256 | +58% |
| Enova InternationalENVA | 1.8% | $48m | 198,795 | +146% |
| SemtechSMTC | 1.8% | $48m | 294,619 | -11% |
| CelesticaCLS | 1.7% | $46m | 126,856 | -36% |
| United TherapeuticsUTHR | 1.7% | $44m | 81,518 | +29% |
| Genius SportsGENI | 1.6% | $43m | 7,025,809 | +152% |
| Powell IndustriesPOWL | 1.6% | $42m | 145,631 | -36% |
| Penguin SolutionsPENG | 1.6% | $42m | 546,173 | New |
| DaveDAVE | 1.5% | $39m | 105,338 | Held |
| FlexFLEX | 1.4% | $37m | 229,027 | -48% |
| AllientALNT | 1.4% | $37m | 359,685 | +11% |
| Porch GroupPRCH | 1.4% | $37m | 2,456,451 | +15% |
| Akamai TechnologiesAKAM | 1.4% | $37m | 310,361 | -27% |
| Candel TherapeuticsCADL | 1.3% | $36m | 3,490,398 | +21% |
| Talen EnergyTLN | 1.3% | $35m | 90,312 | +11% |
| Regal RexnordRRX | 1.2% | $33m | 137,498 | +155% |
| Lantheus HoldingsLNTH | 1.2% | $32m | 288,691 | -31% |
| BiogenBIIB | 1.2% | $31m | 142,856 | +21% |
| Veeco InstrumentsVECO | 1.1% | $30m | 401,639 | +59% |
| Luxexperience BVLUXE | 1.1% | $30m | 4,053,147 | +9% |
| Zeta Global HoldingsZETA | 1.1% | $30m | 1,502,738 | +209% |
| Cellebrite DICLBT | 1.1% | $28m | 1,932,514 | -11% |
| Sportradar Group AGSRAD | 1.0% | $27m | 1,819,949 | New |
| Canada Goose HoldingsGOOS | 1.0% | $26m | 2,750,523 | -15% |
| BandwidthBAND | 1.0% | $26m | 412,701 | New |
| Warby ParkerWRBY | 1.0% | $26m | 843,862 | +69% |
| Kontoor BrandsKTB | 0.9% | $24m | 292,115 | New |
| OshkoshOSK | 0.9% | $24m | 157,641 | +767% |
| Encore Capital GroupECPG | 0.9% | $24m | 255,715 | New |
| TwilioTWLO | 0.9% | $24m | 115,397 | +54% |
| SezzleSEZL | 0.9% | $23m | 135,743 | +94% |
| Remitly GlobalRELY | 0.9% | $23m | 1,017,592 | +46% |
| ACM ResearchACMR | 0.8% | $23m | 177,432 | +113% |
| Element SolutionsESI | 0.8% | $22m | 469,213 | +112% |
| NokiaNOK | 0.8% | $22m | 1,645,761 | -31% |
| BlackberryBB | 0.8% | $22m | 1,714,461 | New |
| International Flavors & FragrancesIFF | 0.8% | $21m | 269,229 | New |
| Pulse BiosciencesPLSE | 0.8% | $21m | 753,333 | +3% |
| MoogMOG-A | 0.8% | $21m | 49,274 | +67% |
| the Real Brokerage | 0.8% | $20m | 11,042,364 | -24% |
| CareDxCDNA | 0.7% | $20m | 684,805 | +101% |
| PAR Pacific HoldingsPARR | 0.7% | $19m | 341,863 | -51% |
| Vishay IntertechnologyVSH | 0.7% | $19m | 351,515 | New |
| Take TWO Interactive SoftwareTTWO | 0.7% | $18m | 72,487 | +125% |
| Gates IndustrialGTES | 0.7% | $18m | 641,587 | New |
| Mama's CreationsMAMA | 0.7% | $18m | 984,869 | -16% |
| Kura Sushi USAKRUS | 0.7% | $17m | 302,010 | Held |
| SanminaSANM | 0.6% | $17m | 68,255 | +150% |
| Park AerospacePKE | 0.6% | $17m | 447,390 | +9% |
| GrahamGHM | 0.6% | $17m | 136,925 | +32% |
| BEL FuseBELFB | 0.6% | $16m | 47,856 | -10% |
| On Holding AGONON | 0.6% | $16m | 441,137 | +118% |
| Amer SportsAS | 0.6% | $15m | 452,880 | +27% |
| CohuCOHU | 0.6% | $15m | 206,120 | New |
| JabilJBL | 0.6% | $15m | 38,929 | -50% |
| AdeiaADEA | 0.5% | $15m | 443,060 | -39% |
| VicorVICR | 0.5% | $14m | 38,081 | +43% |
| Tenable HoldingsTENB | 0.5% | $14m | 387,923 | New |
| GE HealthCare TechnologiesGEHC | 0.5% | $14m | 222,393 | New |
| Crane NXTCXT | 0.5% | $14m | 271,524 | New |
| Ranpak HoldingsPACK | 0.5% | $14m | 1,894,855 | -3% |
| Onto InnovationONTO | 0.5% | $14m | 36,503 | +64% |
| GeneDx HoldingsWGS | 0.5% | $14m | 200,315 | +95% |
| Forrester ResearchFORR | 0.5% | $14m | 1,623,925 | +5% |
| MarinemaxHZO | 0.5% | $13m | 344,358 | New |
| Bio-Rad LaboratoriesBIO | 0.5% | $13m | 42,620 | +201% |
| QuantumQMCO | 0.4% | $11m | 1,020,120 | New |
| BaiduBIDU | 0.4% | $11m | 95,863 | -74% |
| FerrariRACE | 0.4% | $11m | 29,079 | New |
| Digi InternationalDGII | 0.4% | $11m | 141,243 | -17% |
| NlightLASR | 0.4% | $11m | 151,867 | -33% |
| Viavi SolutionsVIAV | 0.4% | $11m | 220,118 | +51% |
| Boot Barn HoldingsBOOT | 0.4% | $10m | 63,759 | New |
| Lightpath TechnologiesLPTH | 0.4% | $10m | 629,168 | -40% |
| Frequency ElectronicsFEIM | 0.4% | $10m | 152,818 | Held |
| Halozyme TherapeuticsHALO | 0.4% | $10m | 127,498 | New |
| Okeanis Eco TankersECO | 0.4% | $10m | 195,997 | -64% |
| Ermenegildo ZegnaZGN | 0.4% | $10m | 753,948 | +6% |
| SweetgreenSG | 0.3% | $9m | 1,029,016 | New |
| TapestryTPR | 0.3% | $9m | 61,688 | +262% |
| Solaris Energy InfrastructureSEI | 0.3% | $9m | 107,401 | +285% |
| A10 NetworksATEN | 0.3% | $8m | 226,920 | New |
| AmbarellaAMBA | 0.3% | $8m | 97,072 | -11% |
| Tecnoglass HoldingsTGLS | 0.3% | $8m | 176,254 | New |
| QuanterixQTRX | 0.3% | $8m | 1,899,308 | -36% |
| TecogenTGEN | 0.3% | $8m | 1,551,113 | +250% |
| HealthequityHQY | 0.3% | $8m | 89,274 | -12% |
| Tower SemiconductorTSEM | 0.3% | $8m | 30,557 | -5% |
| Castle BiosciencesCSTL | 0.3% | $8m | 328,818 | -76% |
| SilicomSILC | 0.3% | $8m | 162,466 | New |
| CienaCIEN | 0.3% | $7m | 15,272 | -17% |
| eBayEBAY | 0.3% | $7m | 65,741 | -48% |
| RB GlobalRBA | 0.3% | $7m | 63,009 | New |
| XometryXMTR | 0.3% | $7m | 73,163 | New |
Showing the largest 100 of 148.
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is up 67.5% since 30 June 2025.
Where the money is
Technology38.9%
Industrials14.8%
Financial services12.4%
Retail & consumer12.1%
Health care11.2%
Materials2.7%
Media & telecom1.5%
Utilities1.4%
Everyday goods1.1%
Energy0.7%
Real estate0.2%
Other3.2%
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.