Portolan Capital Management
Latest statistics and disclosures from Portolan Capital Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are MOD, TTMI, ELF, DBRG, CLS, and represent 18.65% of Portolan Capital Management's stock portfolio.
- Added to shares of these 10 stocks: DBRG (+$28M), CLBT (+$26M), DOMO (+$25M), LASR (+$23M), WWW (+$22M), SMTC (+$21M), PSIX (+$19M), FSLR (+$18M), WIX (+$17M), ACMR (+$16M).
- Started 41 new stock positions in GNRC, LEVI, VNET, RPAY, PLSE, NUS, BIDU, ACMR, LPTH, LASR.
- Reduced shares in these 10 stocks: CLS (-$73M), KTOS (-$67M), , TPR (-$22M), PBPB (-$20M), FOUR (-$19M), METC (-$19M), PRCH (-$15M), WLDN (-$15M), LHX (-$14M).
- Sold out of its positions in ACI, ALGN, AVPT, BOOT, BV, CWH, CRMD, CROX, DECK, DXCM.
- Portolan Capital Management was a net seller of stock by $-27M.
- Portolan Capital Management has $1.8B in assets under management (AUM), dropping by 15.87%.
- Central Index Key (CIK): 0001350290
Tip: Access up to 7 years of quarterly data
Positions held by Portolan Capital Management consolidated in one spreadsheet with up to 7 years of data
Download as csv
Download as Excel
Portfolio Holdings for Portolan Capital Management
Portolan Capital Management holds 119 positions in its portfolio as reported in the September 2025 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Modine Manufacturing (MOD) | 4.6 | $86M | +22% | 603k | 142.16 |
|
| TTM Technologies (TTMI) | 3.7 | $69M | +5% | 1.2M | 57.60 |
|
| Elf Beauty (ELF) | 3.5 | $65M | +4% | 488k | 132.48 |
|
| Digitalbridge Group Cl A New (DBRG) | 3.5 | $64M | +77% | 5.5M | 11.70 |
|
| Celestica (CLS) | 3.4 | $62M | -54% | 252k | 246.38 |
|
| Kratos Defense &sec Solutio Com New (KTOS) | 2.9 | $55M | -55% | 596k | 91.37 |
|
| Semtech Corporation (SMTC) | 2.6 | $48M | +76% | 669k | 71.45 |
|
| AeroVironment (AVAV) | 2.5 | $47M | -17% | 148k | 314.89 |
|
| Powell Industries (POWL) | 2.4 | $45M | -13% | 148k | 304.81 |
|
| Cellebrite Di Ordinary Shares (CLBT) | 2.4 | $45M | +139% | 2.4M | 18.53 |
|
| Genius Sports Shares Cl A (GENI) | 2.4 | $45M | -11% | 3.6M | 12.38 |
|
| Domo Com Cl B (DOMO) | 2.3 | $43M | +142% | 2.7M | 15.84 |
|
| Talen Energy Corp (TLN) | 2.2 | $40M | +44% | 95k | 425.38 |
|
| Flex Ord (FLEX) | 1.9 | $35M | +23% | 596k | 57.97 |
|
| Castle Biosciences (CSTL) | 1.9 | $35M | 1.5M | 22.77 |
|
|
| Canada Goose Hldgs Shs Sub Vtg (GOOS) | 1.6 | $30M | +46% | 2.2M | 13.79 |
|
| Vishay Precision (VPG) | 1.4 | $26M | -16% | 823k | 32.05 |
|
| Porch Group (PRCH) | 1.4 | $26M | -37% | 1.5M | 16.78 |
|
| Honest (HNST) | 1.4 | $26M | +11% | 6.9M | 3.68 |
|
| I3 Verticals Com Cl A (IIIV) | 1.3 | $24M | -22% | 748k | 32.46 |
|
| The Real Brokerage Com New (REAX) | 1.3 | $24M | +190% | 5.8M | 4.18 |
|
| Tower Semiconductor Shs New (TSEM) | 1.3 | $24M | +198% | 327k | 72.30 |
|
| Opera Sponsored Ads (OPRA) | 1.3 | $23M | +28% | 1.1M | 20.64 |
|
| Quanterix Ord (QTRX) | 1.3 | $23M | +17% | 4.3M | 5.43 |
|
| Nlight (LASR) | 1.2 | $23M | NEW | 770k | 29.63 |
|
| Wolverine World Wide (WWW) | 1.2 | $22M | NEW | 797k | 27.44 |
|
| Green Dot Corp Cl A (GDOT) | 1.2 | $22M | +15% | 1.6M | 13.43 |
|
| Mamamancini's Holdings (MAMA) | 1.2 | $21M | -6% | 2.0M | 10.51 |
|
| Primoris Services (PRIM) | 1.1 | $21M | +50% | 149k | 137.33 |
|
| Zeta Global Holdings Corp Cl A (ZETA) | 1.1 | $20M | -22% | 1.0M | 19.87 |
|
| Power Solutions Intl Com New (PSIX) | 1.0 | $19M | NEW | 196k | 98.22 |
|
| First Solar (FSLR) | 1.0 | $18M | NEW | 83k | 220.53 |
|
| Warby Parker Cl A Com (WRBY) | 1.0 | $18M | -31% | 646k | 27.58 |
|
| Bel Fuse CL B (BELFB) | 0.9 | $18M | +97% | 124k | 141.02 |
|
| RadNet (RDNT) | 0.9 | $17M | -33% | 227k | 76.21 |
|
| Wix SHS (WIX) | 0.9 | $17M | NEW | 96k | 177.63 |
|
| Acm Resh Com Cl A (ACMR) | 0.9 | $16M | NEW | 406k | 39.13 |
|
| Lantheus Holdings Inc Common Stock Usd 0.01 (LNTH) | 0.8 | $15M | +16% | 297k | 51.29 |
|
| Vertiv Holdings Com Cl A (VRT) | 0.8 | $15M | +31% | 101k | 150.86 |
|
| Shift4 Pmts Cl A (FOUR) | 0.8 | $15M | -56% | 189k | 77.40 |
|
| Solaris Energy Infras Com Cl A (SEI) | 0.8 | $15M | NEW | 363k | 39.97 |
|
| Super Micro Computer Com New (SMCI) | 0.8 | $14M | +200% | 296k | 47.94 |
|
| Applied Optoelectronics (AAOI) | 0.8 | $14M | +19% | 546k | 25.93 |
|
| Draftkings Com Cl A (DKNG) | 0.8 | $14M | -24% | 372k | 37.40 |
|
| Caredx (CDNA) | 0.7 | $14M | +48% | 934k | 14.54 |
|
| Luxexperience Bv Sponsored Ads (LUXE) | 0.7 | $13M | -48% | 1.6M | 8.50 |
|
| Bio Rad Labs Cl A (BIO) | 0.7 | $13M | -26% | 46k | 280.39 |
|
| Sphere Entertainment Cl A (SPHR) | 0.7 | $13M | NEW | 208k | 62.12 |
|
| Lightpath Technologies Com Cl A (LPTH) | 0.7 | $13M | NEW | 1.6M | 7.93 |
|
| Ermenegildo Zegna N V Ord Shs (ZGN) | 0.7 | $13M | +15% | 1.4M | 9.45 |
|
| Ciena Corp Com New (CIEN) | 0.7 | $13M | NEW | 89k | 145.67 |
|
| Bandwidth Com Cl A (BAND) | 0.7 | $12M | +115% | 746k | 16.67 |
|
| Allied Motion Technologies (ALNT) | 0.6 | $12M | NEW | 258k | 44.75 |
|
| Repay Hldgs Corp Com Cl A (RPAY) | 0.6 | $11M | NEW | 2.2M | 5.23 |
|
| Take-Two Interactive Software (TTWO) | 0.6 | $11M | 44k | 258.36 |
|
|
| Enova Intl (ENVA) | 0.6 | $11M | 98k | 115.09 |
|
|
| Similarweb SHS (SMWB) | 0.6 | $11M | +62% | 1.2M | 9.30 |
|
| Fabrinet SHS (FN) | 0.6 | $11M | +48% | 29k | 364.62 |
|
| MarineMax (HZO) | 0.5 | $9.9M | +27% | 393k | 25.33 |
|
| Kura Sushi Usa Cl A Com (KRUS) | 0.5 | $9.9M | -2% | 167k | 59.41 |
|
| Celsius Hldgs Com New (CELH) | 0.5 | $9.4M | +125% | 164k | 57.49 |
|
| Gates Indl Corp Ord Shs (GTES) | 0.5 | $9.1M | -44% | 367k | 24.82 |
|
| Crane Holdings (CXT) | 0.5 | $8.9M | NEW | 132k | 67.07 |
|
| Meta Platforms Cl A (META) | 0.5 | $8.6M | 12k | 734.38 |
|
|
| Planet Labs Pbc Com Cl A (PL) | 0.4 | $8.2M | NEW | 631k | 12.98 |
|
| Lumentum Hldgs (LITE) | 0.4 | $8.0M | NEW | 50k | 162.71 |
|
| Reddit Cl A (RDDT) | 0.4 | $7.9M | -36% | 35k | 229.99 |
|
| Blacksky Technology Cl A New (BKSY) | 0.4 | $7.9M | NEW | 390k | 20.15 |
|
| Open Lending Corp (LPRO) | 0.4 | $7.8M | NEW | 3.7M | 2.11 |
|
| Transmedics Group (TMDX) | 0.4 | $7.7M | NEW | 69k | 112.20 |
|
| United Therapeutics Corporation (UTHR) | 0.4 | $7.6M | -41% | 18k | 419.21 |
|
| Generac Holdings (GNRC) | 0.4 | $7.5M | NEW | 45k | 167.40 |
|
| Lincoln Educational Services Corporation (LINC) | 0.4 | $7.5M | -18% | 320k | 23.50 |
|
| Stewart Information Services Corporation (STC) | 0.4 | $7.5M | NEW | 102k | 73.32 |
|
| Upwork (UPWK) | 0.4 | $7.3M | NEW | 394k | 18.57 |
|
| Tecnoglass Ord Shs (TGLS) | 0.4 | $7.3M | -27% | 109k | 66.91 |
|
| Nu Skin Enterprises Cl A (NUS) | 0.4 | $7.3M | NEW | 597k | 12.19 |
|
| Candel Therapeutics (CADL) | 0.4 | $7.1M | -14% | 1.4M | 5.10 |
|
| Frequency Electronics (FEIM) | 0.4 | $6.9M | NEW | 204k | 33.91 |
|
| Douglas Elliman (DOUG) | 0.4 | $6.7M | +28% | 2.4M | 2.86 |
|
| Establishment Labs Holdings Ord (ESTA) | 0.3 | $6.4M | +24% | 155k | 40.99 |
|
| Acuren Corporation (TIC) | 0.3 | $6.3M | NEW | 473k | 13.31 |
|
| Gigacloud Technology Class A Ord (GCT) | 0.3 | $6.3M | -4% | 220k | 28.40 |
|
| Everus Constr Group (ECG) | 0.3 | $6.3M | NEW | 73k | 85.75 |
|
| Lockheed Martin Corporation (LMT) | 0.3 | $6.2M | -21% | 13k | 499.21 |
|
| Shoals Technologies Group In Cl A (SHLS) | 0.3 | $6.0M | NEW | 815k | 7.41 |
|
| Ameresco Cl A (AMRC) | 0.3 | $5.9M | NEW | 175k | 33.58 |
|
| Vnet Group Sponsored Ads A (VNET) | 0.3 | $5.9M | NEW | 568k | 10.33 |
|
| Onto Innovation (ONTO) | 0.3 | $5.8M | NEW | 45k | 129.22 |
|
| Forrester Research (FORR) | 0.3 | $5.4M | +46% | 514k | 10.60 |
|
| Tecogen Com New (TGEN) | 0.3 | $5.2M | +27% | 596k | 8.81 |
|
| Levi Strauss &co Cl A Com Stk (LEVI) | 0.3 | $5.0M | NEW | 214k | 23.30 |
|
| Park Aerospace Corp. Cmn Pke (PKE) | 0.3 | $5.0M | NEW | 245k | 20.34 |
|
| Prog Holdings Com Npv (PRG) | 0.3 | $4.9M | NEW | 150k | 32.36 |
|
| Olaplex Hldgs (OLPX) | 0.3 | $4.8M | +132% | 3.6M | 1.31 |
|
| Genedx Holdings Corp Com Cl A (WGS) | 0.3 | $4.7M | -72% | 44k | 107.74 |
|
| Sitime Corp (SITM) | 0.3 | $4.7M | NEW | 16k | 301.31 |
|
| Whitefiber SHS | 0.2 | $4.4M | NEW | 161k | 27.17 |
|
| Custom Truck One Source Com Cl A (CTOS) | 0.2 | $4.2M | NEW | 649k | 6.42 |
|
| Rocky Brands (RCKY) | 0.2 | $3.8M | -38% | 128k | 29.79 |
|
| Sportradar Group Class A Ord Shs (SRAD) | 0.2 | $3.5M | -61% | 132k | 26.90 |
|
| Mercury Computer Systems (MRCY) | 0.2 | $3.5M | NEW | 45k | 77.40 |
|
| Microsoft Corporation (MSFT) | 0.2 | $3.1M | -5% | 6.0k | 517.95 |
|
| Tapestry (TPR) | 0.2 | $2.9M | -88% | 26k | 113.22 |
|
| Oracle Corporation (ORCL) | 0.1 | $2.7M | -30% | 9.6k | 281.24 |
|
| Sweetgreen Com Cl A (SG) | 0.1 | $2.5M | -38% | 318k | 7.98 |
|
| Natera (NTRA) | 0.1 | $2.5M | -24% | 16k | 160.97 |
|
| Pulse Biosciences (PLSE) | 0.1 | $1.8M | NEW | 102k | 17.70 |
|
| Ranpak Holdings Corp Com Cl A (PACK) | 0.1 | $1.8M | NEW | 316k | 5.62 |
|
| Alphabet Cap Stk Cl C (GOOG) | 0.1 | $1.7M | 7.0k | 243.55 |
|
|
| Willdan (WLDN) | 0.1 | $1.7M | -89% | 17k | 96.69 |
|
| L3harris Technologies (LHX) | 0.1 | $1.5M | -89% | 5.1k | 305.41 |
|
| Casella Waste Sys Cl A (CWST) | 0.1 | $1.4M | 15k | 94.88 |
|
|
| WisdomTree Investments (WT) | 0.1 | $984k | -89% | 71k | 13.90 |
|
| Sportsmans Whse Hldgs (SPWH) | 0.0 | $842k | -77% | 304k | 2.77 |
|
| Baidu Spon Adr Rep A (BIDU) | 0.0 | $604k | NEW | 4.6k | 131.77 |
|
| GDS HLDGS Sponsored Ads (GDS) | 0.0 | $544k | NEW | 14k | 38.70 |
|
| Bluelinx Hldgs Com New (BXC) | 0.0 | $490k | -88% | 6.7k | 73.08 |
|
| Velo3d Com New | 0.0 | $184k | NEW | 60k | 3.07 |
|
Past Filings by Portolan Capital Management
SEC 13F filings are viewable for Portolan Capital Management going back to 2010
- 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
- Portolan Capital Management 2022 Q2 filed Aug. 15, 2022
- Portolan Capital Management 2022 Q1 filed May 16, 2022
- Portolan Capital Management 2021 Q4 filed Feb. 14, 2022