Portolan Capital Management, LLC
13F Reported Value
ⓘ$2.7B
Holdings
148
Latest Filing
2026-06-30
Filing Quarter
Q2 2026
Portfolio Overview
Portolan Capital Management, LLC disclosed 148 positions worth $2.7B in its Form 13F-HR for Q2 2026, led by $VPG (Vishay Precision Group, Inc.) at 5.7% of the equity portfolio, followed by $VIRT and $TTMI. During the quarter the fund opened 36 new positions and exited 32 — including a new stake in $PENG and a full exit from $PBF. The portfolio is most concentrated in Technology (43.2% of disclosed assets). All figures are sourced directly from Portolan Capital Management, LLC’s Form 13F-HR filing with the SEC under CIK 1350290.
AI Fund Analysis
StableSector Allocation
AUM History
Top Equity Holdings by Value
Quarterly Activity — Q2 2026
Click any card to unlockTop Holdings
- 30.4#2,490
Quality
$151.1M1,008,167 sh - 74.1#119
Quality
$127.6M2,142,215 sh - 62.6#696
Quality
$95.0M507,838 sh - 56.3
Quality
$83.8M313,683 sh - 68.3
Quality
$72.8M529,807 sh - 62.5
Quality
$54.2M1,114,116 sh - 32.1
Quality
$48.7M1,299,256 sh - 69.9
Quality
$47.9M198,795 sh - 55.9
Quality
$47.7M294,619 sh - 69.8
Quality
$46.3M126,856 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
 Vishay Precision Group, Inc.$VPG | 30.4#2,490 | $151.1M | 1,008,167 |
 Virtu Financial, Inc.$VIRT | 74.1#119 | $127.6M | 2,142,215 |
 TTM TECHNOLOGIES INC$TTMI | 62.6#696 | $95.0M | 507,838 |
 MODINE MANUFACTURING CO$MOD | 56.3 | $83.8M | 313,683 |
 QUALYS, INC.$QLYS | 68.3 | $72.8M | 529,807 |
 Shift4 Payments, Inc.$FOUR | 62.5 | $54.2M | 1,114,116 |
 Mayville Engineering Company, Inc.$MEC | 32.1 | $48.7M | 1,299,256 |
 Enova International, Inc.$ENVA | 69.9 | $47.9M | 198,795 |
 SEMTECH CORP$SMTC | 55.9 | $47.7M | 294,619 |
 CELESTICA INC$CLS | 69.8 | $46.3M | 126,856 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of Portolan Capital Management, LLC's 148 positions.
Showing top 10 of 148 holdings.
Sector Allocation
Technology
$1.2B
Industrials
$536.6M
Healthcare
$270.1M
Financials
$263.3M
Consumer Discretionary
$201.1M
Materials
$71.8M
Communication Services
$57.2M
Utilities
$36.1M
Full Holdings — Portolan Capital Management, LLC (Q2 2026)
All 148 disclosed positions from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | $VPG | Vishay Precision Group, Inc. | $151.1M | 5.7% | -1% | 30.4 |
| 2 | $VIRT | Virtu Financial, Inc. | $127.6M | 4.8% | +77% | 74.1 |
| 3 | $TTMI | TTM TECHNOLOGIES INC | $95.0M | 3.6% | -30% | 62.6 |
| 4 | $MOD | MODINE MANUFACTURING CO | $83.8M | 3.1% | -24% | 56.3 |
| 5 | $QLYS | QUALYS, INC. | $72.8M | 2.7% | +122% | 68.3 |
| 6 | $FOUR | Shift4 Payments, Inc. | $54.2M | 2.0% | +420% | 62.5 |
| 7 | $MEC | Mayville Engineering Company, Inc. | $48.7M | 1.8% | +58% | 32.1 |
| 8 | $ENVA | Enova International, Inc. | $47.9M | 1.8% | +146% | 69.9 |
| 9 | $SMTC | SEMTECH CORP | $47.7M | 1.8% | -11% | 55.9 |
| 10 | $CLS | CELESTICA INC | $46.3M | 1.7% | -36% | 69.8 |
| 11 |  $UTHR | UNITED THERAPEUTICS Corp | $44.2M | 1.6% | +29% | 71.3 |
| 12 |  $GENI | Genius Sports Ltd | $42.6M | 1.6% | +152% | — |
| 13 |  $POWL | POWELL INDUSTRIES INC | $41.7M | 1.6% | +92% | 69.8 |
| 14 |  $PENG | Penguin Solutions, Inc. | $41.5M | 1.6% | NEW | 49.2 |
| 15 |  $DAVE | Dave Inc./DE | $39.2M | 1.5% | -0% | 80.2 |
| 16 |  $FLEX | FLEX LTD. | $37.1M | 1.4% | -48% | — |
| 17 |  $ALNT | ALLIENT INC | $37.0M | 1.4% | +11% | 47.4 |
| 18 |  $PRCH | Porch Group, Inc. | $36.9M | 1.4% | +15% | 46.1 |
| 19 |  $AKAM | AKAMAI TECHNOLOGIES INC | $36.7M | 1.4% | -27% | 59.5 |
| 20 |  $CADL | Candel Therapeutics, Inc. | $36.0M | 1.4% | +21% | — |
| 21 |  $TLN | Talen Energy Corp | $34.7M | 1.3% | +11% | 57.2 |
| 22 |  $RRX | REGAL REXNORD CORP | $32.8M | 1.2% | +155% | 52 |
| 23 |  $LNTH | Lantheus Holdings, Inc. | $32.0M | 1.2% | -31% | 61.1 |
| 24 |  $BIIB | BIOGEN INC. | $30.9M | 1.2% | +21% | 64.7 |
| 25 |  $VECO | VEECO INSTRUMENTS INC | $30.4M | 1.1% | +59% | 42.8 |
| 26 |  $LUXE | LuxExperience B.V. | $30.1M | 1.1% | +9% | — |
| 27 |  $ZETA | Zeta Global Holdings Corp. | $29.6M | 1.1% | +209% | 63.4 |
| 28 |  $CLBT | Cellebrite DI Ltd. | $28.2M | 1.1% | -11% | — |
| 29 |  $SRAD | Sportradar Group AG | $27.2M | 1.0% | NEW | — |
| 30 |  $GOOS | Canada Goose Holdings Inc. | $26.2M | 1.0% | -15% | — |
| 31 |  $BAND | Bandwidth Inc. | $26.1M | 1.0% | NEW | 49.4 |
| 32 |  $WRBY | Warby Parker Inc. | $25.6M | 1.0% | +69% | 54.3 |
| 33 |  $KTB | Kontoor Brands, Inc. | $24.3M | 0.9% | NEW | 66 |
| 34 |  $OSK | OSHKOSH CORP | $24.2M | 0.9% | +767% | 45.2 |
| 35 |  $ECPG | ENCORE CAPITAL GROUP INC | $23.9M | 0.9% | NEW | 70.9 |
| 36 |  $TWLO | TWILIO INC | $23.8M | 0.9% | +54% | 70.4 |
| 37 |  $SEZL | Sezzle Inc. | $23.3M | 0.9% | +94% | 80.1 |
| 38 |  $RELY | Remitly Global, Inc. | $22.8M | 0.8% | +46% | 72.5 |
| 39 |  $ACMR | ACM Research, Inc. | $22.5M | 0.8% | +113% | 54 |
| 40 |  $ESI | Element Solutions Inc | $22.4M | 0.8% | +112% | 46.2 |
| 41 |  $NOK | NOKIA CORP | $21.9M | 0.8% | -31% | — |
| 42 |  $BB | BLACKBERRY Ltd | $21.7M | 0.8% | NEW | — |
| 43 |  $IFF | INTERNATIONAL FLAVORS & FRAGRANCES INC | $21.3M | 0.8% | NEW | 52.8 |
| 44 |  $PLSE | PULSE BIOSCIENCES, INC. | $20.9M | 0.8% | +3% | — |
| 45 |  $MOG-A | MOOG INC. | $20.9M | 0.8% | +67% | 65.1 |
| 46 |  $REAX.R1862461 | Real Brokerage Inc | $20.1M | 0.8% | -24% | 57.4 |
| 47 |  $CDNA | CareDx, Inc. | $19.5M | 0.7% | +101% | 67.5 |
| 48 |  $PARR | PAR PACIFIC HOLDINGS, INC. | $19.2M | 0.7% | -51% | 55.7 |
| 49 |  $VSH | VISHAY INTERTECHNOLOGY INC | $18.9M | 0.7% | NEW | 48.8 |
| 50 |  $TTWO | TAKE TWO INTERACTIVE SOFTWARE INC | $18.1M | 0.7% | +125% | 55.6 |
| 51 |  $GTES | Gates Industrial Corp Ltd. | $17.9M | 0.7% | NEW | — |
| 52 |  $MAMA | Mama's Creations, Inc. | $17.6M | 0.7% | -16% | 62.2 |
| 53 |  $KRUS | KURA SUSHI USA, INC. | $17.4M | 0.7% | +0% | 46.9 |
| 54 |  $SANM | SANMINA CORP | $17.3M | 0.7% | +150% | 64.2 |
| 55 |  $PKE | PARK AEROSPACE CORP | $17.1M | 0.6% | +9% | 62.6 |
| 56 |  $GHM | GRAHAM CORP | $16.9M | 0.6% | +32% | 50 |
| 57 |  $BELFA | BEL FUSE INC /NJ | $15.9M | 0.6% | -10% | 58.5 |
| 58 |  $ONON | On Holding AG | $15.6M | 0.6% | +118% | 53.1 |
| 59 |  $AS | Amer Sports, Inc. | $15.3M | 0.6% | +27% | 64 |
| 60 |  $COHU | COHU INC | $15.2M | 0.6% | NEW | 38.3 |
| 61 |  $JBL | JABIL INC | $15.0M | 0.6% | -50% | 57.4 |
| 62 |  $ADEA | Adeia Inc. | $14.6M | 0.6% | -39% | 70.2 |
| 63 |  $VICR | VICOR CORP | $14.5M | 0.5% | +43% | 58.1 |
| 64 |  $TENB | Tenable Holdings, Inc. | $14.3M | 0.5% | NEW | 57.1 |
| 65 |  $GEHC | GE HealthCare Technologies Inc. | $14.2M | 0.5% | NEW | 55.7 |
| 66 |  $CXT | Crane NXT, Co. | $13.9M | 0.5% | NEW | 62.8 |
| 67 |  $PACK | Ranpak Holdings Corp. | $13.9M | 0.5% | -3% | 40.3 |
| 68 |  $ONTO | ONTO INNOVATION INC. | $13.8M | 0.5% | +64% | 61.9 |
| 69 |  $WGS | GeneDx Holdings Corp. | $13.8M | 0.5% | +95% | 35.4 |
| 70 |  $FORR | FORRESTER RESEARCH, INC. | $13.7M | 0.5% | +5% | 24.7 |
| 71 |  $HZO | MARINEMAX INC | $12.6M | 0.5% | NEW | 42.4 |
| 72 |  $BIO | BIO-RAD LABORATORIES, INC. | $12.5M | 0.5% | +201% | 48.9 |
| 73 |  $QMCO | QUANTUM CORP /DE/ | $11.2M | 0.4% | NEW | 26.2 |
| 74 |  $BIDU | Baidu, Inc. | $11.0M | 0.4% | -74% | 27 |
| 75 |  $RACE | Ferrari N.V. | $10.8M | 0.4% | NEW | — |
| 76 |  $DGII | DIGI INTERNATIONAL INC | $10.6M | 0.4% | -17% | 60.7 |
| 77 |  $LASR | NLIGHT, INC. | $10.6M | 0.4% | -33% | 54.1 |
| 78 |  $VIAV | VIAVI SOLUTIONS INC. | $10.5M | 0.4% | +51% | 51.5 |
| 79 |  $BOOT | Boot Barn Holdings, Inc. | $10.5M | 0.4% | NEW | 62.6 |
| 80 |  $LPTH | LIGHTPATH TECHNOLOGIES INC | $10.3M | 0.4% | -40% | 34.1 |
| 81 |  $FEIM | FREQUENCY ELECTRONICS INC | $10.1M | 0.4% | +2% | 31.3 |
| 82 |  $HALO | HALOZYME THERAPEUTICS, INC. | $10.0M | 0.4% | NEW | 77.2 |
| 83 |  $ECO | Okeanis Eco Tankers Corp. | $9.8M | 0.4% | -64% | — |
| 84 |  $ZGN | Ermenegildo Zegna N.V. | $9.8M | 0.4% | +6% | — |
| 85 |  $SG | Sweetgreen, Inc. | $9.1M | 0.3% | NEW | 35.9 |
| 86 |  $TPR | TAPESTRY, INC. | $9.0M | 0.3% | +262% | 72.7 |
| 87 |  $SEI | Solaris Energy Infrastructure, Inc. | $8.6M | 0.3% | +285% | 56.4 |
| 88 |  $ATEN | A10 Networks, Inc. | $8.5M | 0.3% | NEW | 58.4 |
| 89 |  $AMBA | AMBARELLA INC | $8.3M | 0.3% | -11% | 42.5 |
| 90 |  $TGLS | Tecnoglass Holdings Inc. | $8.3M | 0.3% | NEW | 50.3 |
| 91 |  $QTRX | Quanterix Corp | $8.2M | 0.3% | -36% | 19.7 |
| 92 |  $TGEN | TECOGEN INC. | $8.1M | 0.3% | +250% | 17 |
| 93 |  $HQY | HEALTHEQUITY, INC. | $8.1M | 0.3% | -12% | 71.2 |
| 94 |  $TSEM | TOWER SEMICONDUCTOR LTD | $8.0M | 0.3% | -5% | — |
| 95 |  $CSTL | CASTLE BIOSCIENCES INC | $7.8M | 0.3% | -76% | 40.7 |
| 96 |  $SILC | SILICOM LTD. | $7.8M | 0.3% | NEW | — |
| 97 |  $CIEN | CIENA CORP | $7.5M | 0.3% | -17% | 72.9 |
| 98 |  $EBAY | EBAY INC | $7.3M | 0.3% | -48% | 66.4 |
| 99 |  $RBA | RB GLOBAL INC. | $7.3M | 0.3% | NEW | 67.3 |
| 100 |  $XMTR | Xometry, Inc. | $7.1M | 0.3% | NEW | 48.3 |
| 101 |  $MBLY | Mobileye Global Inc. | $7.0M | 0.3% | +6% | 33.8 |
| 102 |  $WLDN | Willdan Group, Inc. | $6.7M | 0.3% | -10% | 63.7 |
| 103 |  $HNST | Honest Company, Inc. | $6.4M | 0.2% | -43% | 39.6 |
| 104 |  $MTRN | MATERION Corp | $6.2M | 0.2% | NEW | 59 |
| 105 |  $TTAM | Titan America SA | $6.0M | 0.2% | NEW | — |
| 106 |  $GLBE | Global-E Online Ltd. | $6.0M | 0.2% | NEW | — |
| 107 |  $META | Meta Platforms, Inc. | $5.7M | 0.2% | -1% | 79.6 |
| 108 |  $CELH | Celsius Holdings, Inc. | $5.7M | 0.2% | +18% | 66.5 |
| 109 |  $REAL | TheRealReal, Inc. | $5.6M | 0.2% | NEW | 36.8 |
| 110 |  $ELF | e.l.f. Beauty, Inc. | $5.6M | 0.2% | -44% | 58.2 |
| 111 |  $TMDX | TransMedics Group, Inc. | $5.5M | 0.2% | +671% | 67.2 |
| 112 |  $RDVT | Red Violet, Inc. | $5.4M | 0.2% | NEW | 63 |
| 113 |  $DHT | DHT Holdings, Inc. | $5.2M | 0.2% | -71% | — |
| 114 |  $EVLV | Evolv Technologies Holdings, Inc. | $5.2M | 0.2% | -50% | 56.7 |
| 115 |  $PRCT | PROCEPT BioRobotics Corp | $5.1M | 0.2% | -10% | 33.3 |
| 116 |  $TKR | TIMKEN CO | $5.1M | 0.2% | NEW | 54.4 |
| 117 |  $LITE | Lumentum Holdings Inc. | $5.0M | 0.2% | +0% | 44.3 |
| 118 |  $GNRC | GENERAC HOLDINGS INC. | $4.9M | 0.2% | NEW | 54.4 |
| 119 |  $BC | BRUNSWICK CORP | $4.8M | 0.2% | NEW | 45.7 |
| 120 |  $EQPT | EquipmentShare.com Inc | $4.5M | 0.2% | NEW | 52.4 |
| 121 |  $CGNT | Cognyte Software Ltd. | $4.4M | 0.2% | NEW | — |
| 122 |  $NOVT | NOVANTA INC | $4.4M | 0.2% | -28% | 51.2 |
| 123 |  $DOUG | Douglas Elliman Inc. | $4.2M | 0.2% | -10% | 38.5 |
| 124 |  $BOBS | Bob's Discount Furniture, Inc. | $4.0M | 0.1% | NEW | — |
| 125 |  $ECG | Everus Construction Group, Inc. | $3.9M | 0.1% | +170% | 66.3 |
| 126 |  $MEI | METHODE ELECTRONICS INC | $3.8M | 0.1% | NEW | 34.4 |
| 127 |  $FN | Fabrinet | $3.6M | 0.1% | -88% | 62.8 |
| 128 |  $UCTT | Ultra Clean Holdings, Inc. | $3.5M | 0.1% | -26% | 40.1 |
| 129 |  $KTOS | KRATOS DEFENSE & SECURITY SOLUTIONS, INC. | $3.3M | 0.1% | -75% | 44.6 |
| 130 |  $NXT | Nextpower Inc. | $3.2M | 0.1% | -52% | 69.1 |
| 131 |  $HAFN | Hafnia Ltd | $2.4M | 0.1% | -81% | — |
| 132 |  $NTRA | Natera, Inc. | $2.3M | 0.1% | -25% | 53.5 |
| 133 |  $GH | Guardant Health, Inc. | $2.1M | 0.1% | -2% | 39 |
| 134 |  $GCT | GigaCloud Technology Inc | $2.1M | 0.1% | +26% | 71.7 |
| 135 |  $GOOGL | Alphabet Inc. | $2.0M | 0.1% | +0% | 78.2 |
| 136 |  $AAOI | APPLIED OPTOELECTRONICS, INC. | $1.8M | 0.1% | -60% | 40.1 |
| 137 |  $IESC | IES Holdings, Inc. | $1.4M | 0.1% | -84% | 68.3 |
| 138 |  $CWST | CASELLA WASTE SYSTEMS INC | $1.4M | 0.1% | -3% | 57.1 |
| 139 |  $PL | Planet Labs PBC | $1.2M | 0.1% | -22% | 38.4 |
| 140 |  $AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | $1.2M | 0.1% | -90% | 66 |
| 141 |  $DAN | DANA Inc | $901,222 | 0.0% | -3% | 56.7 |
| 142 |  $DBRG | DigitalBridge Group, Inc. | $895,720 | 0.0% | -85% | 36.5 |
| 143 |  $LINC | LINCOLN EDUCATIONAL SERVICES CORP | $698,949 | 0.0% | +0% | 60.3 |
| 144 |  $LHX | L3HARRIS TECHNOLOGIES, INC. /DE/ | $626,803 | 0.0% | +0% | 64.4 |
| 145 |  $LPRO | Open Lending Corp | $568,517 | 0.0% | -97% | 28.8 |
| 146 |  $TLX | Telix Pharmaceuticals Ltd | $293,139 | 0.0% | -95% | — |
| 147 |  $GDS | GDS Holdings Ltd | $273,874 | 0.0% | -40% | — |
| 148 |  $TALO | TALOS ENERGY INC. | $171,703 | 0.0% | -96% | 47.7 |
New Positions (36)
$PENG Penguin Solutions, Inc.$41.5M$SRAD Sportradar Group AG$27.2M$BAND Bandwidth Inc.$26.1M$KTB Kontoor Brands, Inc.$24.3M$ECPG ENCORE CAPITAL GROUP INC$23.9M$BB BLACKBERRY Ltd$21.7M$IFF INTERNATIONAL FLAVORS & FRAGRANCES INC$21.3M$VSH VISHAY INTERTECHNOLOGY INC$18.9M$GTES Gates Industrial Corp Ltd.$17.9M$COHU COHU INC$15.2M$TENB Tenable Holdings, Inc.$14.3M$GEHC GE HealthCare Technologies Inc.$14.2M$CXT Crane NXT, Co.$13.9M$HZO MARINEMAX INC$12.6M$QMCO QUANTUM CORP /DE/$11.2MExited Positions (32)
$PBF PBF Energy Inc.
$CRGY Crescent Energy Co
$CNR Core Natural Resources, Inc.
$MUSA Murphy USA Inc.
$CRCL Circle Internet Group, Inc.
$PRIM Primoris Services Corp
$UPWK UPWORK, INC
$RPAY Repay Holdings Corp
$ACLS AXCELIS TECHNOLOGIES INC
$VNET VNET Group, Inc.
$NOG NORTHERN OIL & GAS, INC.
$BL BLACKLINE, INC.
$CENX CENTURY ALUMINUM CO
$MIAX MIAMI INTERNATIONAL HOLDINGS, INC.
$AVAV AeroVironment IncBrowse Top Institutional Investors
13F Pro tracks 8,700+ institutional investors filing 13F reports with the SEC.
to search all 8,700+ institutional filers.
Available Analysis
13F Pro tracks comprehensive institutional data for Portolan Capital Management, LLC including:
Track Portolan Capital Management, LLC's Full Portfolio
See every holding, quarter-over-quarter changes, sector allocation, and accumulation patterns for Portolan Capital Management, LLC and 8,700+ other institutional investors.
Free tier includes full 13F search and fund profiles. Pro starts at $6.67/mo (billed annually).
AI-Powered Hedge Fund Analysis: Portolan Capital Management, LLC
13F Pro is an AI hedge fund tracker and stock research platform. For Portolan Capital Management, LLC (SEC CIK: 1350290), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in Portolan Capital Management, LLC's portfolio is scored on a 32-signal AI quality ranking (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.