Funds › Portolan Capital Management, LLC
Portolan Capital Management, LLC
13F for Q2 2026, filed Aug 14, 2026. 148 positions worth $2.7B.Managers with more than $100 million in US-listed stocks list their holdings each quarter, within 45 days of quarter end. Long positions only: no short sales or cash.
Latest report
Q2 2026
filed Aug 14, 2026
Reported value
$2.7B
+$792.0M (42.1%) vs Q1 2026
Positions
148
144 in Q1 2026
Top 10 share
29.0%
of reported value
CheckedEach line's price per share is checked against other managers' reports of the same stock. Unit mix-ups are corrected. Reports no fix can rescue are left out.
Clean
prices match other managers' reports
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Holdings, Q2 2026
Largest first. Common shares only; puts and calls are under All positions.
| # | The fund's own figures at the end of the quarter. A report can be up to 45 days old when it is filed. Options and bonds are not counted here. | Filing | ||||
|---|---|---|---|---|---|---|
| 1 | VPG Vishay Precision Group, Inc. | 1.01M | $151.1M | 5.7% | -1.1% | 13F ↗ |
| 2 | VIRT Virtu Financial, Inc. | 2.14M | $127.6M | 4.8% | +76.8% | 13F ↗ |
| 3 | TTMI TTM Technologies, Inc. | 507,838 | $95.0M | 3.6% | -30.2% | 13F ↗ |
| 4 | MOD Modine Manufacturing Company | 313,683 | $83.8M | 3.1% | -23.9% | 13F ↗ |
| 5 | QLYS Qualys, Inc. | 529,807 | $72.8M | 2.7% | +122% | 13F ↗ |
| 6 | FOUR Shift4 Payments, Inc. | 1.11M | $54.2M | 2.0% | +420% | 13F ↗ |
| 7 | MEC Mayville Engineering Company, Inc. | 1.30M | $48.7M | 1.8% | +58.2% | 13F ↗ |
| 8 | ENVA Enova International, Inc. | 198,795 | $47.9M | 1.8% | +146% | 13F ↗ |
| 9 | SMTC Semtech Corporation | 294,619 | $47.7M | 1.8% | -11.3% | 13F ↗ |
| 10 | CLS Celestica, Inc. | 126,856 | $46.3M | 1.7% | -35.9% | 13F ↗ |
| 11 | UTHR United Therapeutics Corporation | 81,518 | $44.2M | 1.7% | +28.5% | 13F ↗ |
| 12 | GENI Genius Sports Limited | 7.03M | $42.6M | 1.6% | +152% | 13F ↗ |
| 13 | POWL Powell Industries, Inc. | 145,631 | $41.7M | 1.6% | -36.0% | 13F ↗ |
| 14 | PENG Penguin Solutions, Inc. | 546,173 | $41.5M | 1.6% | New | 13F ↗ |
| 15 | DAVE Dave Inc. | 105,338 | $39.2M | 1.5% | -0.1% | 13F ↗ |
| 16 | FLEX Flex Ltd. | 229,027 | $37.1M | 1.4% | -48.3% | 13F ↗ |
| 17 | ALNT Allient Inc. | 359,685 | $37.0M | 1.4% | +11.2% | 13F ↗ |
| 18 | PRCH Porch Group, Inc. | 2.46M | $36.9M | 1.4% | +14.5% | 13F ↗ |
| 19 | AKAM Akamai Technologies, Inc. | 310,361 | $36.7M | 1.4% | -26.7% | 13F ↗ |
| 20 | CADL Candel Therapeutics, Inc. | 3.49M | $36.0M | 1.3% | +20.6% | 13F ↗ |
| 21 | TLN Talen Energy Corporation | 90,312 | $34.7M | 1.3% | +10.7% | 13F ↗ |
| 22 | RRX Regal Rexnord Corporation | 137,498 | $32.8M | 1.2% | +155% | 13F ↗ |
| 23 | LNTH Lantheus Holdings, Inc. · Commonstock | 288,691 | $32.0M | 1.2% | -30.8% | 13F ↗ |
| 24 | BIIB Biogen Inc. | 142,856 | $30.9M | 1.2% | +20.6% | 13F ↗ |
| 25 | VECO Veeco Instruments Inc. | 401,639 | $30.4M | 1.1% | +58.5% | 13F ↗ |
| 26 | LUXE LuxExperience B.V. · ADR | 4.05M | $30.1M | 1.1% | +8.5% | 13F ↗ |
| 27 | ZETA Zeta Global Holdings Corp. | 1.50M | $29.6M | 1.1% | +209% | 13F ↗ |
| 28 | CLBT Cellebrite DI Ltd. | 1.93M | $28.2M | 1.1% | -11.4% | 13F ↗ |
| 29 | SRAD Sportradar Group AG · Equities | 1.82M | $27.2M | 1.0% | New | 13F ↗ |
| 30 | GOOS Canada Goose Holdings Inc. · Shs Sub Vtg | 2.75M | $26.2M | 1.0% | -14.5% | 13F ↗ |
| 31 | BAND Bandwidth Inc. | 412,701 | $26.1M | 1.0% | New | 13F ↗ |
| 32 | WRBY Warby Parker Inc. | 843,862 | $25.6M | 1.0% | +68.5% | 13F ↗ |
| 33 | KTB Kontoor Brands, Inc. | 292,115 | $24.3M | 0.9% | New | 13F ↗ |
| 34 | OSK Oshkosh Corporation | 157,641 | $24.2M | 0.9% | +767% | 13F ↗ |
| 35 | ECPG Encore Capital Group Inc | 255,715 | $23.9M | 0.9% | New | 13F ↗ |
| 36 | TWLO Twilio Inc. | 115,397 | $23.8M | 0.9% | +54.3% | 13F ↗ |
| 37 | SEZL Sezzle Inc. | 135,743 | $23.3M | 0.9% | +93.8% | 13F ↗ |
| 38 | RELY Remitly Global, Inc. | 1.02M | $22.8M | 0.9% | +45.8% | 13F ↗ |
| 39 | ACMR ACM Research, Inc. | 177,432 | $22.5M | 0.8% | +113% | 13F ↗ |
| 40 | ESI Element Solutions Inc. | 469,213 | $22.4M | 0.8% | +112% | 13F ↗ |
| 41 | NOK Nokia Corporation Sponsored · ADR | 1.65M | $21.9M | 0.8% | -31.3% | 13F ↗ |
| 42 | BB BlackBerry Limited | 1.71M | $21.7M | 0.8% | New | 13F ↗ |
| 43 | IFF International Flavors & Fragrances, Inc. | 269,229 | $21.3M | 0.8% | New | 13F ↗ |
| 44 | PLSE Pulse Biosciences, Inc | 753,333 | $20.9M | 0.8% | +2.7% | 13F ↗ |
| 45 | MOG-A Moog Inc. Class A | 49,274 | $20.9M | 0.8% | +67.4% | 13F ↗ |
| 46 | The Real Brokerage Inc | 11.04M | $20.1M | 0.8% | -23.9% | 13F ↗ |
| 47 | CDNA CareDx, Inc. | 684,805 | $19.5M | 0.7% | +101% | 13F ↗ |
| 48 | PARR Par Pacific Holdings, Inc. | 341,863 | $19.2M | 0.7% | -50.7% | 13F ↗ |
| 49 | VSH Vishay Intertechnology, Inc. | 351,515 | $18.9M | 0.7% | New | 13F ↗ |
| 50 | TTWO Take-Two Interactive Software, Inc. | 72,487 | $18.1M | 0.7% | +125% | 13F ↗ |
Showing the top 50 of 148 positions. Premium lists every position, plus puts and calls.
Changes since Q1 2026
36 new, 49 added to, 59 trimmed, 32 exited, 4 unchanged. By estimated dollars.
New positions (36)
| PENG Penguin Solutions, Inc. | 546,173 | New | $41.5M |
| SRAD Sportradar Group AG · Equities | 1.82M | New | $27.2M |
| BAND Bandwidth Inc. | 412,701 | New | $26.1M |
| KTB Kontoor Brands, Inc. | 292,115 | New | $24.3M |
| ECPG Encore Capital Group Inc | 255,715 | New | $23.9M |
| BB BlackBerry Limited | 1.71M | New | $21.7M |
| IFF International Flavors & Fragrances, Inc. | 269,229 | New | $21.3M |
| VSH Vishay Intertechnology, Inc. | 351,515 | New | $18.9M |
| Gates Industrial Corp plc | 641,587 | New | $17.9M |
| COHU Cohu, Inc. | 206,120 | New | $15.2M |
Added to (49)
| VIRT Virtu Financial, Inc. | 2.14M | +76.8% | $55.4M |
| FOUR Shift4 Payments, Inc. | 1.11M | +420% | $43.8M |
| QLYS Qualys, Inc. | 529,807 | +122% | $40.0M |
| ENVA Enova International, Inc. | 198,795 | +146% | $28.4M |
| GENI Genius Sports Limited | 7.03M | +152% | $25.7M |
| OSK Oshkosh Corporation | 157,641 | +767% | $21.4M |
| ZETA Zeta Global Holdings Corp. | 1.50M | +209% | $20.0M |
| RRX Regal Rexnord Corporation | 137,498 | +155% | $19.9M |
| MEC Mayville Engineering Company, Inc. | 1.30M | +58.2% | $17.9M |
| ACMR ACM Research, Inc. | 177,432 | +113% | $11.9M |
Trimmed (59)
| TTMI TTM Technologies, Inc. | 507,838 | -30.2% | -$41.1M |
| FLEX Flex Ltd. | 229,027 | -48.3% | -$34.7M |
| BIDU Baidu, Inc. · ADR | 95,863 | -73.8% | -$30.9M |
| FN Fabrinet | 6,418 | -88.3% | -$27.2M |
| MOD Modine Manufacturing Company | 313,683 | -23.9% | -$26.3M |
| CLS Celestica, Inc. | 126,856 | -35.9% | -$25.9M |
| CSTL Castle Biosciences, Inc. | 328,818 | -75.6% | -$24.4M |
| POWL Powell Industries, Inc. | 145,631 | -36.0% | -$23.4M |
| Open Lending Corp | 182,803 | -97.4% | -$20.9M |
| PARR Par Pacific Holdings, Inc. | 341,863 | -50.7% | -$19.7M |
Exited (32)
| PBF PBF Energy Inc. | 799,998 | Exited | -$38.1M |
| CRGY Crescent Energy Company | 2.60M | Exited | -$35.1M |
| CNR Core Natural Resources, Inc. · Common Stocks | 237,036 | Exited | -$24.8M |
| MUSA Murphy USA Inc. | 48,107 | Exited | -$23.8M |
| CRCL Circle Internet Group, Inc. | 213,796 | Exited | -$20.4M |
| PRIM Primoris Services Corporation | 130,626 | Exited | -$18.7M |
| UPWK Upwork Inc. | 1.57M | Exited | -$17.2M |
| RPAY Repay Holdings Corporation | 2.86M | Exited | -$7.4M |
| ACLS Axcelis Technologies, Inc. | 77,168 | Exited | -$7.2M |
| VNET VNET Group, Inc. · ADR | 825,490 | Exited | -$6.9M |
The 10 largest of each, by estimated dollars: shares changed times the later report's price. Index tracking, splits and mergers move positions too.
All positions
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Reported value by quarter
Value and number of positions at the end of each quarter.
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Largest positions in earlier quarters
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Ten largest positions
By value, Q2 2026.
Filings
Most recent first, up to 80. An amendment can replace a report or add holdings to it. All 13F filings
Information, not investment advice. Values are the fund's own figures at quarter end; a report can be up to 45 days old when filed. Disclaimer