Portolan Capital Management, Llc Portfolio Stock Holdings
Portolan Capital Management, Llc disclosed 144 stock positions valued at approximately $1.9 billion in its latest SEC 13F filing. The largest holdings include MODINE MFG CO, TTM TECHNOLOGIES INC, and CELESTICA INC. The filing reflects positions held as of March 31, 2026 and was filed on May 15, 2026.
- Report Period
- March 31, 2026
- No. of Stocks
- 144
- Portfolio Value
- $1.9B
Holdings by Sector
Portolan Capital Management, Llc Portfolio Holdings in Q1 2026
130 holdings in the latest reporting period.
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| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| MODINE MFG CO | MOD | Consumer Cyclical | 4.75% | 412,092 | -123,855 | -23.11% | $89,304,457 |
| TTM TECHNOLOGIES INC | TTMI | Technology | 3.77% | 727,494 | -419,188 | -36.56% | $70,872,465 |
| CELESTICA INC | CLS | Technology | 2.97% | 197,863 | +25,588 | +14.85% | $55,734,050 |
| VIRTU FINL INC | VIRT | Financial Services | 2.84% | 1,211,887 | +835,604 | +222.07% | $53,298,790 |
| AKAMAI TECHNOLOGIES INC | AKAM | Technology | 2.59% | 423,442 | -100,879 | -19.24% | $48,632,314 |
| VISHAY PRECISION GROUP INC | VPG | Technology | 2.36% | 1,019,868 | +142,199 | +16.20% | $44,282,669 |
| PAR PAC HOLDINGS INC | PARR | Energy | 2.31% | 693,834 | +693,834 | +100.00% | $43,461,762 |
| POWELL INDS INC | POWL | Industrials | 2.18% | 75,830 | -3,286 | -4.15% | $41,030,096 |
| BAIDU INC | BIDU | Communication Services | 2.17% | 366,429 | +102,748 | +38.97% | $40,827,519 |
| PBF ENERGY INC | PBF | Energy | 2.03% | 799,998 | +799,998 | +100.00% | $38,095,905 |
| UNITED THERAPEUTICS CORP DEL | UTHR | Healthcare | 2.00% | 63,435 | +26,682 | +72.60% | $37,615,686 |
| THE REAL BROKERAGE INC | REAX | Real Estate | 1.93% | 14,519,848 | +3,740,005 | +34.69% | $36,299,620 |
| CANADA GOOSE HLDGS INC | GOOS | Consumer Cyclical | 1.88% | 3,218,277 | +1,079,373 | +50.46% | $35,304,499 |
| CRESCENT ENERGY COMPANY | CRGY | Energy | 1.87% | 2,601,142 | +2,561,242 | +6419.15% | $35,115,417 |
| CASTLE BIOSCIENCES INC | CSTL | Healthcare | 1.76% | 1,350,283 | -379,180 | -21.92% | $33,149,448 |
| LANTHEUS HLDGS INC | LNTH | Healthcare | 1.68% | 417,390 | -58,399 | -12.27% | $31,659,032 |
| LUXEXPERIENCE BV | MYTE | Consumer Cyclical | 1.59% | 3,733,943 | +1,073,269 | +40.34% | $29,871,544 |
| FLEXTRONICS INTL LTD | FLEX | Other | 1.54% | 443,128 | -23,785 | -5.09% | $29,007,159 |
| FABRINET | FN | Other | 1.52% | 54,763 | +43,885 | +403.43% | $28,560,000 |
| TALEN ENERGY CORP | TLN | Other | 1.39% | 81,574 | +6,590 | +8.79% | $26,040,868 |
| SEMTECH CORP | SMTC | Technology | 1.36% | 332,327 | -176,328 | -34.67% | $25,552,623 |
| CORE NATURAL RESOURCES INC | CEIX | Other | 1.32% | 237,036 | +106,794 | +82.00% | $24,824,780 |
| MURPHY USA INC | MUSA | Consumer Cyclical | 1.26% | 48,107 | +48,107 | +100.00% | $23,763,415 |
| BIOGEN INC | BIIB | Healthcare | 1.16% | 118,481 | +33,491 | +39.41% | $21,721,122 |
| KURA SUSHI USA INC | KRUS | Consumer Cyclical | 1.12% | 301,212 | +110,416 | +57.87% | $21,021,585 |
| QUALYS INC | QLYS | Technology | 1.12% | 239,028 | +187,173 | +360.95% | $20,998,610 |
| JABIL INC | JBL | Technology | 1.09% | 77,197 | +6,532 | +9.24% | $20,505,839 |
| CIRCLE INTERNET GROUP INC | CRCL | Other | 1.09% | 213,796 | +213,796 | +100.00% | $20,398,276 |
| DHT HOLDINGS INC | Y2065G121 | Other | 1.06% | 1,091,788 | +1,091,788 | +100.00% | $19,946,967 |
| NOKIA CORP | NOK | Technology | 1.02% | 2,393,970 | +1,317,848 | +122.46% | $19,247,519 |
| ALLIENT INC | ALNT | Technology | 1.02% | 323,453 | +21,565 | +7.14% | $19,112,838 |
| PRIMORIS SVCS CORP | PRIM | Industrials | 0.99% | 130,626 | +24,910 | +23.56% | $18,684,743 |
| DAVE INC | DAVE | Technology | 0.98% | 105,442 | +61,441 | +139.64% | $18,356,398 |
| KRATOS DEFENSE & SEC SOLUTIO | KTOS | Industrials | 0.97% | 259,811 | -34,195 | -11.63% | $18,319,274 |
| MAMAS CREATIONS INC | MAMA | Consumer Defensive | 0.96% | 1,176,936 | -68,831 | -5.53% | $18,054,198 |
| ADEIA INC | ADEA | Technology | 0.93% | 729,461 | +473,253 | +184.71% | $17,528,948 |
| UPWORK INC | UPWK | Communication Services | 0.92% | 1,570,560 | +850,916 | +118.24% | $17,213,338 |
| PULSE BIOSCIENCES INC | PLSE | Healthcare | 0.84% | 733,372 | +339,873 | +86.37% | $15,833,501 |
| PORCH GROUP INC | PRCH | Technology | 0.82% | 2,144,890 | +61,835 | +2.97% | $15,378,861 |
| HAFNIA LTD | Y2990R101 | Other | 0.79% | 1,948,717 | +1,948,717 | +100.00% | $14,810,249 |
| MAYVILLE ENGR CO INC | MEC | Industrials | 0.78% | 821,136 | +308,374 | +60.14% | $14,739,391 |
| CANDEL THERAPEUTICS INC | CADL | Healthcare | 0.75% | 2,894,325 | +1,198,958 | +70.72% | $14,182,193 |
| NLIGHT INC | LASR | Technology | 0.68% | 225,576 | -364,857 | -61.79% | $12,862,344 |
| AMER SPORTS INC | AS | Other | 0.63% | 357,826 | +357,826 | +100.00% | $11,779,632 |
| EBAY INC. | EBAY | Consumer Cyclical | 0.61% | 126,096 | +67,952 | +116.87% | $11,477,258 |
| PARK AEROSPACE CORP | PKE | Industrials | 0.60% | 410,655 | +165,620 | +67.59% | $11,243,734 |
| ENOVA INTL INC | ENVA | Financial Services | 0.58% | 80,923 | -16,924 | -17.30% | $10,991,771 |
| REMITLY GLOBAL INC | RELY | Technology | 0.58% | 698,166 | +70,147 | +11.17% | $10,940,261 |
| EVOLV TECHNOLOGIES HLDNGS IN | EVLV | Industrials | 0.58% | 1,795,688 | +1,795,688 | +100.00% | $10,863,912 |
| WARBY PARKER INC | WRBY | Healthcare | 0.56% | 500,706 | -731,467 | -59.36% | $10,549,875 |
| BEL FUSE INC | BELFB | Technology | 0.56% | 53,170 | -86,343 | -61.89% | $10,526,597 |
| LIGHTPATH TECHNOLOGIES INC | LPTH | Technology | 0.56% | 1,040,462 | -1,291,722 | -55.39% | $10,435,834 |
| QUANTERIX CORP | QTRX | Healthcare | 0.55% | 2,945,823 | -1,579,730 | -34.91% | $10,369,297 |
| REGAL REXNORD CORPORATION | RRX | Industrials | 0.54% | 53,975 | +30,877 | +133.68% | $10,107,359 |
| AMERICAN SUPERCONDUCTOR CORP | AMSC | Industrials | 0.53% | 295,636 | +295,636 | +100.00% | $10,007,279 |
| TWILIO INC | TWLO | Technology | 0.50% | 74,769 | +74,769 | +100.00% | $9,407,436 |
| SHIFT4 PMTS INC | FOUR | Technology | 0.50% | 214,284 | -253,779 | -54.22% | $9,370,639 |
| HONEST CO INC | HNST | Consumer Defensive | 0.48% | 3,045,834 | -1,758,372 | -36.60% | $8,954,752 |
| FORRESTER RESH INC | FORR | Industrials | 0.46% | 1,541,276 | +835,527 | +118.39% | $8,723,622 |
| OPEN LENDING CORP | LPRO | Financial Services | 0.46% | 6,902,888 | +2,166,258 | +45.73% | $8,628,610 |
| MOOG INC | MOG-A | Industrials | 0.46% | 29,437 | +29,437 | +100.00% | $8,614,444 |
| VEECO INSTRS INC DEL | VECO | Technology | 0.46% | 253,379 | +253,379 | +100.00% | $8,579,413 |
| HEALTHEQUITY INC | HQY | Healthcare | 0.45% | 101,646 | +101,646 | +100.00% | $8,494,556 |
| E L F BEAUTY INC | ELF | Consumer Defensive | 0.44% | 136,707 | -55,615 | -28.92% | $8,285,811 |
| DIGI INTL INC | DGII | Technology | 0.44% | 170,256 | -67,294 | -28.33% | $8,206,339 |
| GRAHAM CORP | GHM | Industrials | 0.43% | 103,556 | +103,556 | +100.00% | $8,172,640 |
| ZETA GLOBAL HOLDINGS CORP | ZETA | Technology | 0.41% | 486,271 | -832,526 | -63.13% | $7,741,434 |
| ELEMENT SOLUTIONS INC | ESI | Basic Materials | 0.40% | 221,232 | +221,232 | +100.00% | $7,552,860 |
| REPAY HLDGS CORP | RPAY | Technology | 0.40% | 2,856,178 | +65,897 | +2.36% | $7,426,063 |
| WILLDAN GROUP INC | WLDN | Industrials | 0.38% | 93,964 | +36,351 | +63.10% | $7,193,884 |
| AXCELIS TECHNOLOGIES INC | ACLS | Technology | 0.38% | 77,168 | +77,168 | +100.00% | $7,182,797 |
| CIENA CORP | CIEN | Technology | 0.38% | 18,466 | -38,015 | -67.31% | $7,169,055 |
| RANPAK HOLDINGS CORP | PACK | Consumer Cyclical | 0.37% | 1,947,681 | -3,049 | -0.16% | $6,953,221 |
| VNET GROUP INC | VNET | Technology | 0.37% | 825,490 | +18,690 | +2.32% | $6,925,861 |
| ON HLDG AG | ONON | Other | 0.37% | 202,444 | +202,444 | +100.00% | $6,887,145 |
| NEXTPOWER INC | NXT | Technology | 0.36% | 56,747 | -23,042 | -28.88% | $6,840,851 |
| FREQUENCY ELECTRS INC | FEIM | Technology | 0.35% | 150,141 | +37,065 | +32.78% | $6,645,241 |
| GENEDX HOLDINGS CORP | WGS | Healthcare | 0.35% | 102,575 | +46,799 | +83.91% | $6,587,367 |
| TAKE-TWO INTERACTIVE SOFTWAR | TTWO | Communication Services | 0.34% | 32,219 | -5,468 | -14.51% | $6,363,253 |
| PROCEPT BIOROBOTICS CORP | PRCT | Healthcare | 0.34% | 251,716 | -3,402 | -1.33% | $6,295,417 |
| NORTHERN OIL & GAS INC | NOG | Energy | 0.32% | 204,244 | +204,244 | +100.00% | $5,970,052 |
| CAREDX INC | CDNA | Healthcare | 0.31% | 340,352 | -418,423 | -55.14% | $5,908,511 |
| BLACKLINE INC | BL | Technology | 0.31% | 159,026 | +159,026 | +100.00% | $5,883,962 |
| META PLATFORMS INC | META | Communication Services | 0.31% | 10,261 | -57 | -0.55% | $5,870,626 |
| CELSIUS HLDGS INC | CELH | Consumer Defensive | 0.31% | 164,597 | +164,597 | +100.00% | $5,839,902 |
| DIGITALBRIDGE GROUP INC | DBRG | Real Estate | 0.31% | 373,130 | -451,816 | -54.77% | $5,753,665 |
| IES HOLDINGS INC | IESC | Industrials | 0.30% | 11,869 | +77 | +0.65% | $5,655,222 |
| CENTURY ALUM CO | CENX | Basic Materials | 0.30% | 95,039 | +95,039 | +100.00% | $5,577,839 |
| TALOS ENERGY INC | TALO | Energy | 0.29% | 344,549 | +225,449 | +189.29% | $5,430,092 |
| AEROVIRONMENT INC | AVAV | Industrials | 0.26% | 26,880 | -49,078 | -64.61% | $4,920,384 |
| VIAVI SOLUTIONS INC | VIAV | Technology | 0.26% | 145,844 | +145,844 | +100.00% | $4,853,688 |
| XPENG INC | XPEV | Consumer Cyclical | 0.25% | 275,432 | +178,505 | +184.16% | $4,712,642 |
| PERSONALIS INC | PSNL | Healthcare | 0.25% | 736,713 | +357,516 | +94.28% | $4,692,862 |
| MOBILEYE GLOBAL INC | MBLY | Consumer Cyclical | 0.25% | 678,135 | +336,199 | +98.32% | $4,658,787 |
| I3 VERTICALS INC | IIIV | Technology | 0.25% | 207,274 | -464,713 | -69.16% | $4,634,647 |
| ONTO INNOVATION INC | ONTO | Technology | 0.24% | 22,263 | +22,263 | +100.00% | $4,565,473 |
| PROPETRO HLDG CORP | PUMP | Energy | 0.24% | 314,815 | +314,815 | +100.00% | $4,536,484 |
| SEZZLE INC | SEZL | Financial Services | 0.24% | 70,046 | -97,827 | -58.27% | $4,433,211 |
| NOVANTA INC | NOVT | Technology | 0.24% | 37,507 | -69,588 | -64.98% | $4,429,952 |
| DOUGLAS ELLIMAN INC | DOUG | Real Estate | 0.23% | 2,669,030 | +315,080 | +13.39% | $4,377,209 |