Portolan Capital Management
Latest statistics and disclosures from Portolan Capital Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are VPG, VIRT, TTMI, MOD, QLYS, and represent 19.86% of Portolan Capital Management's stock portfolio.
- Added to shares of these 10 stocks: VIRT (+$55M), FOUR (+$44M), PENG (+$42M), QLYS (+$40M), ENVA (+$28M), SRAD (+$27M), BAND (+$26M), GENI (+$26M), KTB (+$24M), ECPG (+$24M).
- Started 36 new stock positions in IFF, SILC, SG, QMCO, ECPG, TENB, BB, GLBE, TGLS, RBA.
- Reduced shares in these 10 stocks: TTMI (-$41M), , CRGY (-$35M), FLEX (-$35M), BIDU (-$31M), FN (-$27M), MOD (-$26M), CLS (-$26M), CNR (-$25M), CSTL (-$24M).
- Sold out of its positions in AVAV, AMPY, AMPL, ACLS, BL, CENX, CRCL, CNR, DOMO, DPRO.
- Portolan Capital Management was a net buyer of stock by $205M.
- Portolan Capital Management has $2.7B in assets under management (AUM), dropping by 42.15%.
- Central Index Key (CIK): 0001350290
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Portfolio Holdings for Portolan Capital Management
Portolan Capital Management holds 148 positions in its portfolio as reported in the June 2026 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Vishay Precision (VPG) | 5.7 | $151M | 1.0M | 149.91 |
|
|
| Virtu Finl Cl A (VIRT) | 4.8 | $128M | +76% | 2.1M | 59.57 |
|
| TTM Technologies (TTMI) | 3.6 | $95M | -30% | 508k | 187.02 |
|
| Modine Manufacturing (MOD) | 3.1 | $84M | -23% | 314k | 267.02 |
|
| Qualys (QLYS) | 2.7 | $73M | +121% | 530k | 137.49 |
|
| Shift4 Pmts Cl A (FOUR) | 2.0 | $54M | +419% | 1.1M | 48.64 |
|
| Mayville Engineering (MEC) | 1.8 | $49M | +58% | 1.3M | 37.46 |
|
| Enova Intl (ENVA) | 1.8 | $48M | +145% | 199k | 240.73 |
|
| Semtech Corporation (SMTC) | 1.8 | $48M | -11% | 295k | 161.85 |
|
| Celestica (CLS) | 1.7 | $46M | -35% | 127k | 364.80 |
|
| United Therapeutics Corporation (UTHR) | 1.7 | $44M | +28% | 82k | 541.83 |
|
| Genius Sports Shares Cl A (GENI) | 1.6 | $43M | +151% | 7.0M | 6.06 |
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| Powell Industries (POWL) | 1.6 | $42M | +92% | 146k | 286.36 |
|
| Penguin Solutions (PENG) | 1.6 | $42M | NEW | 546k | 76.01 |
|
| Dave Class A Com New (DAVE) | 1.5 | $39M | 105k | 372.59 |
|
|
| Flex Ord (FLEX) | 1.4 | $37M | -48% | 229k | 162.07 |
|
| Allied Motion Technologies (ALNT) | 1.4 | $37M | +11% | 360k | 102.93 |
|
| Porch Group (PRCH) | 1.4 | $37M | +14% | 2.5M | 15.04 |
|
| Akamai Technologies (AKAM) | 1.4 | $37M | -26% | 310k | 118.21 |
|
| Candel Therapeutics (CADL) | 1.3 | $36M | +20% | 3.5M | 10.30 |
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| Talen Energy Corp (TLN) | 1.3 | $35M | +10% | 90k | 384.26 |
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| Regal-beloit Corporation (RRX) | 1.2 | $33M | +154% | 138k | 238.19 |
|
| Lantheus Holdings Inc Common Stock Usd 0.01 (LNTH) | 1.2 | $32M | -30% | 289k | 110.94 |
|
| Biogen Idec (BIIB) | 1.2 | $31M | +20% | 143k | 216.06 |
|
| Veeco Instruments (VECO) | 1.1 | $30M | +58% | 402k | 75.80 |
|
| Luxexperience Bv Sponsored Ads (LUXE) | 1.1 | $30M | +8% | 4.1M | 7.43 |
|
| Zeta Global Holdings Corp Cl A (ZETA) | 1.1 | $30M | +209% | 1.5M | 19.68 |
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| Cellebrite Di Ordinary Shares (CLBT) | 1.1 | $28M | -11% | 1.9M | 14.60 |
|
| Sportradar Group Class A Ord Shs (SRAD) | 1.0 | $27M | NEW | 1.8M | 14.97 |
|
| Canada Goose Hldgs Shs Sub Vtg (GOOS) | 1.0 | $26M | -14% | 2.8M | 9.51 |
|
| Bandwidth Com Cl A (BAND) | 1.0 | $26M | NEW | 413k | 63.30 |
|
| Warby Parker Cl A Com (WRBY) | 1.0 | $26M | +68% | 844k | 30.34 |
|
| Kontoor Brands (KTB) | 0.9 | $24M | NEW | 292k | 83.34 |
|
| Oshkosh Corporation (OSK) | 0.9 | $24M | +766% | 158k | 153.48 |
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| Encore Capital (ECPG) | 0.9 | $24M | NEW | 256k | 93.29 |
|
| Twilio Cl A (TWLO) | 0.9 | $24M | +54% | 115k | 206.33 |
|
| Sezzle (SEZL) | 0.9 | $23M | +93% | 136k | 171.63 |
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| Remitly Global (RELY) | 0.9 | $23M | +45% | 1.0M | 22.41 |
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| Acm Resh Com Cl A (ACMR) | 0.8 | $23M | +113% | 177k | 126.89 |
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| Element Solutions (ESI) | 0.8 | $22M | +112% | 469k | 47.75 |
|
| Nokia Corp Sponsored Adr (NOK) | 0.8 | $22M | -31% | 1.6M | 13.28 |
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| Blackberry (BB) | 0.8 | $22M | NEW | 1.7M | 12.65 |
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| International Flavors & Fragrances (IFF) | 0.8 | $21M | NEW | 269k | 79.22 |
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| Pulse Biosciences (PLSE) | 0.8 | $21M | +2% | 753k | 27.73 |
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| Moog Cl A (MOG.A) | 0.8 | $21M | +67% | 49k | 423.84 |
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| The Real Brokerage Com New (REAX) | 0.8 | $20M | -23% | 11M | 1.82 |
|
| Caredx (CDNA) | 0.7 | $20M | +101% | 685k | 28.50 |
|
| Par Pac Holdings Com New (PARR) | 0.7 | $19M | -50% | 342k | 56.08 |
|
| Vishay Intertechnology (VSH) | 0.7 | $19M | NEW | 352k | 53.78 |
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| Take-Two Interactive Software (TTWO) | 0.7 | $18M | +124% | 73k | 249.98 |
|
| Gates Indl Corp Ord Shs (GTES) | 0.7 | $18M | NEW | 642k | 27.97 |
|
| Mamamancini's Holdings (MAMA) | 0.7 | $18M | -16% | 985k | 17.85 |
|
| Kura Sushi Usa Cl A Com (KRUS) | 0.7 | $17M | 302k | 57.56 |
|
|
| Sanmina (SANM) | 0.6 | $17M | +149% | 68k | 253.08 |
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| Park Aerospace Corp. Cmn Pke (PKE) | 0.6 | $17M | +8% | 447k | 38.16 |
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| Graham Corporation (GHM) | 0.6 | $17M | +32% | 137k | 123.79 |
|
| Bel Fuse CL B (BELFB) | 0.6 | $16M | -9% | 48k | 333.04 |
|
| On Hldg Namen Akt A (ONON) | 0.6 | $16M | +117% | 441k | 35.42 |
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| Amer Sports Com Shs (AS) | 0.6 | $15M | +26% | 453k | 33.84 |
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| Cohu (COHU) | 0.6 | $15M | NEW | 206k | 73.91 |
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| Jabil Circuit (JBL) | 0.6 | $15M | -49% | 39k | 385.48 |
|
| Adeia (ADEA) | 0.5 | $15M | -39% | 443k | 32.93 |
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| Vicor Corporation (VICR) | 0.5 | $15M | +42% | 38k | 379.78 |
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| Tenable Hldgs (TENB) | 0.5 | $14M | NEW | 388k | 36.88 |
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| Ge Healthcare Technologies I Common Stock (GEHC) | 0.5 | $14M | NEW | 222k | 64.01 |
|
| Crane Holdings (CXT) | 0.5 | $14M | NEW | 272k | 51.16 |
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| Ranpak Holdings Corp Com Cl A (PACK) | 0.5 | $14M | -2% | 1.9M | 7.31 |
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| Onto Innovation (ONTO) | 0.5 | $14M | +63% | 37k | 378.45 |
|
| Genedx Holdings Corp Com Cl A (WGS) | 0.5 | $14M | +95% | 200k | 68.65 |
|
| Forrester Research (FORR) | 0.5 | $14M | +5% | 1.6M | 8.41 |
|
| MarineMax (HZO) | 0.5 | $13M | NEW | 344k | 36.62 |
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| Bio Rad Labs Cl A (BIO) | 0.5 | $13M | +200% | 43k | 293.61 |
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| Quantum Corp (QMCO) | 0.4 | $11M | NEW | 1.0M | 11.00 |
|
| Baidu Spon Adr Rep A (BIDU) | 0.4 | $11M | -73% | 96k | 114.29 |
|
| Ferrari Nv Ord (RACE) | 0.4 | $11M | NEW | 29k | 372.29 |
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| Digi International (DGII) | 0.4 | $11M | -17% | 141k | 74.95 |
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| Nlight (LASR) | 0.4 | $11M | -32% | 152k | 69.62 |
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| Viavi Solutions Inc equities (VIAV) | 0.4 | $11M | +50% | 220k | 47.75 |
|
| Boot Barn Hldgs (BOOT) | 0.4 | $11M | NEW | 64k | 164.27 |
|
| Lightpath Technologies Com Cl A (LPTH) | 0.4 | $10M | -39% | 629k | 16.35 |
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| Frequency Electronics (FEIM) | 0.4 | $10M | 153k | 66.35 |
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| Halozyme Therapeutics (HALO) | 0.4 | $10M | NEW | 128k | 78.27 |
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| Okeanis Eco Tankers Cor SHS (ECO) | 0.4 | $9.8M | -63% | 196k | 50.12 |
|
| Ermenegildo Zegna N V Ord Shs (ZGN) | 0.4 | $9.8M | +6% | 754k | 13.02 |
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| Sweetgreen Com Cl A (SG) | 0.3 | $9.1M | NEW | 1.0M | 8.81 |
|
| Tapestry (TPR) | 0.3 | $9.0M | +262% | 62k | 146.38 |
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| Solaris Energy Infras Com Cl A (SEI) | 0.3 | $8.6M | +284% | 107k | 80.46 |
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| A10 Networks (ATEN) | 0.3 | $8.5M | NEW | 227k | 37.36 |
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| Ambarella SHS (AMBA) | 0.3 | $8.3M | -10% | 97k | 85.80 |
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| Tecnoglass Ord Shs (TGLS) | 0.3 | $8.3M | NEW | 176k | 46.81 |
|
| Quanterix Ord (QTRX) | 0.3 | $8.2M | -35% | 1.9M | 4.32 |
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| Tecogen Com New (TGEN) | 0.3 | $8.1M | +249% | 1.6M | 5.22 |
|
| Healthequity (HQY) | 0.3 | $8.1M | -12% | 89k | 90.32 |
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| Tower Semiconductor Shs New (TSEM) | 0.3 | $8.0M | -4% | 31k | 260.64 |
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| Castle Biosciences (CSTL) | 0.3 | $7.8M | -75% | 329k | 23.85 |
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| Silicom Ord (SILC) | 0.3 | $7.8M | NEW | 163k | 47.94 |
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| Ciena Corp Com New (CIEN) | 0.3 | $7.5M | -17% | 15k | 490.56 |
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| eBay (EBAY) | 0.3 | $7.3M | -47% | 66k | 111.75 |
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| Rb Global (RBA) | 0.3 | $7.3M | NEW | 63k | 116.45 |
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| Xometry Class A Com (XMTR) | 0.3 | $7.1M | NEW | 73k | 96.52 |
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| Mobileye Global Common Class A (MBLY) | 0.3 | $7.0M | +6% | 721k | 9.68 |
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| Willdan (WLDN) | 0.2 | $6.7M | -10% | 84k | 79.10 |
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| Honest (HNST) | 0.2 | $6.4M | -42% | 1.7M | 3.66 |
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| Materion Corporation (MTRN) | 0.2 | $6.2M | NEW | 21k | 297.39 |
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| Titan Amer Sa Common Shares (TTAM) | 0.2 | $6.0M | NEW | 321k | 18.66 |
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| Global E Online SHS (GLBE) | 0.2 | $6.0M | NEW | 172k | 34.73 |
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| Meta Platforms Cl A (META) | 0.2 | $5.7M | 10k | 563.29 |
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| Celsius Hldgs Com New (CELH) | 0.2 | $5.7M | +18% | 195k | 29.28 |
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| Realreal (REAL) | 0.2 | $5.6M | NEW | 478k | 11.79 |
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| Elf Beauty (ELF) | 0.2 | $5.6M | -44% | 76k | 74.00 |
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| Transmedics Group (TMDX) | 0.2 | $5.5M | +670% | 82k | 66.42 |
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| Red Violet (RDVT) | 0.2 | $5.4M | NEW | 84k | 63.72 |
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| Dht Holdings Shs New (DHT) | 0.2 | $5.2M | -71% | 315k | 16.53 |
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| Evolv Technologies Hldngs In Com Cl A (EVLV) | 0.2 | $5.2M | -50% | 895k | 5.80 |
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| Procept Biorobotics Corp (PRCT) | 0.2 | $5.1M | -9% | 227k | 22.58 |
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| Timken Company (TKR) | 0.2 | $5.1M | NEW | 35k | 145.32 |
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| Lumentum Hldgs (LITE) | 0.2 | $5.0M | 5.8k | 858.06 |
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| Generac Holdings (GNRC) | 0.2 | $4.9M | NEW | 17k | 292.81 |
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| Brunswick Corporation (BC) | 0.2 | $4.8M | NEW | 57k | 84.24 |
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| Equipmentshare Com Cl A (EQPT) | 0.2 | $4.5M | NEW | 231k | 19.66 |
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| Cognyte Software Ord Shs (CGNT) | 0.2 | $4.4M | NEW | 500k | 8.78 |
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| Novanta (NOVT) | 0.2 | $4.4M | -28% | 27k | 162.24 |
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| Douglas Elliman (DOUG) | 0.2 | $4.2M | -10% | 2.4M | 1.77 |
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| Bobs Disc Furniture Com Shs (BOBS) | 0.1 | $4.0M | NEW | 250k | 15.82 |
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| Everus Constr Group (ECG) | 0.1 | $3.9M | +170% | 24k | 165.95 |
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| Methode Electronics (MEI) | 0.1 | $3.8M | NEW | 200k | 18.97 |
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| Fabrinet SHS (FN) | 0.1 | $3.6M | -88% | 6.4k | 562.08 |
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| Ultra Clean Holdings (UCTT) | 0.1 | $3.5M | -26% | 25k | 142.59 |
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| Kratos Defense & Sec Solutio Com New (KTOS) | 0.1 | $3.3M | -74% | 65k | 49.86 |
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| Nextpower Class A Com (NXT) | 0.1 | $3.2M | -52% | 27k | 119.14 |
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| Hafnia SHS (HAFN) | 0.1 | $2.4M | -81% | 367k | 6.64 |
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| Natera (NTRA) | 0.1 | $2.3M | -25% | 8.5k | 271.45 |
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| Guardant Health (GH) | 0.1 | $2.1M | 14k | 150.03 |
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| Gigacloud Technology Class A Ord (GCT) | 0.1 | $2.1M | +26% | 66k | 31.60 |
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| Alphabet Cap Stk Cl C (GOOG) | 0.1 | $2.0M | 5.7k | 353.33 |
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| Applied Optoelectronics (AAOI) | 0.1 | $1.8M | -59% | 12k | 148.16 |
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| Ies Hldgs (IESC) | 0.1 | $1.4M | -83% | 1.9k | 734.66 |
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| Casella Waste Sys Cl A (CWST) | 0.1 | $1.4M | -2% | 15k | 96.97 |
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| Planet Labs Pbc Com Cl A (PL) | 0.0 | $1.2M | -22% | 37k | 33.13 |
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| American Superconductor Corp Shs New (AMSC) | 0.0 | $1.2M | -90% | 29k | 41.51 |
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| Dana Holding Corporation (DAN) | 0.0 | $901k | -3% | 33k | 27.21 |
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| Digitalbridge Group Cl A New (DBRG) | 0.0 | $896k | -84% | 57k | 15.78 |
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| Lincoln Educational Services Corporation (LINC) | 0.0 | $699k | 14k | 49.90 |
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| L3harris Technologies (LHX) | 0.0 | $627k | 2.2k | 290.59 |
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| Open Lending Corp (LPRO) | 0.0 | $569k | -97% | 183k | 3.11 |
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| Telix Pharmaceutical Sponsored Ads (TLX) | 0.0 | $293k | -95% | 25k | 11.53 |
|
| GDS HLDGS Sponsored Ads (GDS) | 0.0 | $274k | -40% | 9.1k | 30.03 |
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| Talos Energy (TALO) | 0.0 | $172k | -96% | 13k | 12.91 |
|
Past Filings by Portolan Capital Management
SEC 13F filings are viewable for Portolan Capital Management going back to 2010
- Portolan Capital Management 2026 Q2 filed Aug. 14, 2026
- Portolan Capital Management 2026 Q1 filed May 15, 2026
- Portolan Capital Management 2025 Q4 filed Feb. 17, 2026
- Portolan Capital Management 2025 Q3 filed Nov. 13, 2025
- Portolan Capital Management 2025 Q2 filed Aug. 13, 2025
- Portolan Capital Management 2025 Q1 filed May 15, 2025
- Portolan Capital Management 2024 Q4 filed Feb. 13, 2025
- Portolan Capital Management 2024 Q3 filed Nov. 14, 2024
- Portolan Capital Management 2024 Q2 filed Aug. 14, 2024
- Portolan Capital Management 2024 Q1 filed May 15, 2024
- Portolan Capital Management 2023 Q4 filed Feb. 14, 2024
- Portolan Capital Management 2023 Q3 filed Nov. 14, 2023
- Portolan Capital Management 2023 Q2 filed Aug. 14, 2023
- Portolan Capital Management 2023 Q1 filed May 15, 2023
- Portolan Capital Management 2022 Q4 filed Feb. 13, 2023
- Portolan Capital Management 2022 Q3 filed Nov. 14, 2022