Q1 2026 · 13F-HR
Portolan Capital Management, LLCholdings as filed
Filed 2026-05-15 · accession 0001104659-26-062488
$1.88B
Reported value
144
Positions
2026-03-31
Period end
The Brief · Portolan Capital Management, LLC · Q1 2026
AI · grounded in 13F
Portolan Capital Management, LLC initiated a new position in PARR valued at $43.5M. The fund also established new stakes in PBF for $38.1M and MUSA for $23.8M. On the sell side, the manager closed its positions in FSLR and FAF, reducing exposure by $20.6M and $19.7M respectively.
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 607828100 | MOD | MODINE MFG CO | $89.3M | 4.75% | 412,092 | Common | SOLE |
| 87305R109 | TTMI | TTM TECHNOLOGIES INC | $70.9M | 3.77% | 727,494 | Common | SOLE |
| 15101Q207 | CLS | CELESTICA INC | $55.7M | 2.97% | 197,863 | Common | SOLE |
| 928254101 | VIRT | VIRTU FINL INC | $53.3M | 2.84% | 1,211,887 | Common | SOLE |
| 00971T101 | AKAM | AKAMAI TECHNOLOGIES INC | $48.6M | 2.59% | 423,442 | Common | SOLE |
| 92835K103 | VPG | VISHAY PRECISION GROUP INC | $44.3M | 2.36% | 1,019,868 | Common | SOLE |
| 69888T207 | PARR | PAR PAC HOLDINGS INC | $43.5M | 2.31% | 693,834 | Common | SOLE |
| 739128106 | POWL | POWELL INDS INC | $41.0M | 2.18% | 75,830 | Common | SOLE |
| 056752108 | BIDU | BAIDU INC | $40.8M | 2.17% | 366,429 | Common | SOLE |
| 69318G106 | PBF | PBF ENERGY INC | $38.1M | 2.03% | 799,998 | Common | SOLE |
| 91307C102 | UTHR | UNITED THERAPEUTICS CORP DEL | $37.6M | 2.00% | 63,435 | Common | SOLE |
| 75585H206 | REAX | THE REAL BROKERAGE INC | $36.3M | 1.93% | 14,519,848 | Common | SOLE |
| 135086106 | GOOS | CANADA GOOSE HLDGS INC | $35.3M | 1.88% | 3,218,277 | Common | SOLE |
| 44952J104 | CRGY | CRESCENT ENERGY COMPANY | $35.1M | 1.87% | 2,601,142 | Common | SOLE |
| 14843C105 | CSTL | CASTLE BIOSCIENCES INC | $33.1M | 1.76% | 1,350,283 | Common | SOLE |
| 516544103 | LNTH | LANTHEUS HLDGS INC | $31.7M | 1.68% | 417,390 | Common | SOLE |
| M2197Q107 | CLBT | CELLEBRITE DI LTD | $30.1M | 1.60% | 2,180,924 | Common | SOLE |
| 55406W103 | LUXE | LUXEXPERIENCE BV | $29.9M | 1.59% | 3,733,943 | Common | SOLE |
| Y2573F102 | FLEX | FLEXTRONICS INTL LTD | $29.0M | 1.54% | 443,128 | Common | SOLE |
| G3323L100 | FN | FABRINET | $28.6M | 1.52% | 54,763 | Common | SOLE |
| Y64177101 | ECO | OKEANIS ECO TANKERS COR | $27.3M | 1.45% | 538,860 | Common | SOLE |
| 87422Q109 | TLN | TALEN ENERGY CORP | $26.0M | 1.39% | 81,574 | Common | SOLE |
| 816850101 | SMTC | SEMTECH CORP | $25.6M | 1.36% | 332,327 | Common | SOLE |
| 218937100 | CNR | CORE NATURAL RESOURCES INC | $24.8M | 1.32% | 237,036 | Common | SOLE |
| 626755102 | MUSA | MURPHY USA INC | $23.8M | 1.26% | 48,107 | Common | SOLE |
| 09062X103 | BIIB | BIOGEN INC | $21.7M | 1.16% | 118,481 | Common | SOLE |
| 501270102 | KRUS | KURA SUSHI USA INC | $21.0M | 1.12% | 301,212 | Common | SOLE |
| 74758T303 | QLYS | QUALYS INC | $21.0M | 1.12% | 239,028 | Common | SOLE |
| 466313103 | JBL | JABIL INC | $20.5M | 1.09% | 77,197 | Common | SOLE |
| 172573107 | CRCL | CIRCLE INTERNET GROUP INC | $20.4M | 1.09% | 213,796 | Common | SOLE |
| Y2065G121 | DHT | DHT HOLDINGS INC | $19.9M | 1.06% | 1,091,788 | Common | SOLE |
| 654902204 | NOK | NOKIA CORP | $19.2M | 1.02% | 2,393,970 | Common | SOLE |
| 019330109 | ALNT | ALLIENT INC | $19.1M | 1.02% | 323,453 | Common | SOLE |
| 74164F103 | PRIM | PRIMORIS SVCS CORP | $18.7M | 0.99% | 130,626 | Common | SOLE |
| 23834J201 | DAVE | DAVE INC | $18.4M | 0.98% | 105,442 | Common | SOLE |
| 50077B207 | KTOS | KRATOS DEFENSE & SEC SOLUTIO | $18.3M | 0.97% | 259,811 | Common | SOLE |
| 56146T103 | MAMA | MAMAS CREATIONS INC | $18.1M | 0.96% | 1,176,936 | Common | SOLE |
| 00676P107 | ADEA | ADEIA INC | $17.5M | 0.93% | 729,461 | Common | SOLE |
| 91688F104 | UPWK | UPWORK INC | $17.2M | 0.92% | 1,570,560 | Common | SOLE |
| 74587B101 | PLSE | PULSE BIOSCIENCES INC | $15.8M | 0.84% | 733,372 | Common | SOLE |
| 733245104 | PRCH | PORCH GROUP INC | $15.4M | 0.82% | 2,144,890 | Common | SOLE |
| Y2990R101 | HAFN | HAFNIA LTD | $14.8M | 0.79% | 1,948,717 | Common | SOLE |
| 578605107 | MEC | MAYVILLE ENGR CO INC | $14.7M | 0.78% | 821,136 | Common | SOLE |
| 137404109 | CADL | CANDEL THERAPEUTICS INC | $14.2M | 0.75% | 2,894,325 | Common | SOLE |
| 65487K100 | LASR | NLIGHT INC | $12.9M | 0.68% | 225,576 | Common | SOLE |
| G3934V109 | GENI | GENIUS SPORTS LIMITED | $12.4M | 0.66% | 2,791,018 | Common | SOLE |
| G0260P102 | AS | AMER SPORTS INC | $11.8M | 0.63% | 357,826 | Common | SOLE |
| 278642103 | EBAY | EBAY INC. | $11.5M | 0.61% | 126,096 | Common | SOLE |
| 70014A104 | PKE | PARK AEROSPACE CORP | $11.2M | 0.60% | 410,655 | Common | SOLE |
| 29357K103 | ENVA | ENOVA INTL INC | $11.0M | 0.58% | 80,923 | Common | SOLE |
| 75960P104 | RELY | REMITLY GLOBAL INC | $10.9M | 0.58% | 698,166 | Common | SOLE |
| 30049H102 | EVLV | EVOLV TECHNOLOGIES HLDNGS IN | $10.9M | 0.58% | 1,795,688 | Common | SOLE |
| 93403J106 | WRBY | WARBY PARKER INC | $10.5M | 0.56% | 500,706 | Common | SOLE |
| 077347300 | BELFB | BEL FUSE INC | $10.5M | 0.56% | 53,170 | Common | SOLE |
| 532257805 | LPTH | LIGHTPATH TECHNOLOGIES INC | $10.4M | 0.56% | 1,040,462 | Common | SOLE |
| 74766Q101 | QTRX | QUANTERIX CORP | $10.4M | 0.55% | 2,945,823 | Common | SOLE |
| 758750103 | RRX | REGAL REXNORD CORPORATION | $10.1M | 0.54% | 53,975 | Common | SOLE |
| 030111207 | AMSC | AMERICAN SUPERCONDUCTOR CORP | $10.0M | 0.53% | 295,636 | Common | SOLE |
| 90138F102 | TWLO | TWILIO INC | $9.4M | 0.50% | 74,769 | Common | SOLE |
| 82452J109 | FOUR | SHIFT4 PMTS INC | $9.4M | 0.50% | 214,284 | Common | SOLE |
| 438333106 | HNST | HONEST CO INC | $9.0M | 0.48% | 3,045,834 | Common | SOLE |
| 346563109 | FORR | FORRESTER RESH INC | $8.7M | 0.46% | 1,541,276 | Common | SOLE |
| 68373J104 | LPRO | OPEN LENDING CORP | $8.6M | 0.46% | 6,902,888 | Common | SOLE |
| 615394202 | MOG/A | MOOG INC | $8.6M | 0.46% | 29,437 | Common | SOLE |
| 922417100 | VECO | VEECO INSTRS INC DEL | $8.6M | 0.46% | 253,379 | Common | SOLE |
| 42226A107 | HQY | HEALTHEQUITY INC | $8.5M | 0.45% | 101,646 | Common | SOLE |
| 26856L103 | ELF | E L F BEAUTY INC | $8.3M | 0.44% | 136,707 | Common | SOLE |
| 253798102 | DGII | DIGI INTL INC | $8.2M | 0.44% | 170,256 | Common | SOLE |
| 384556106 | GHM | GRAHAM CORP | $8.2M | 0.43% | 103,556 | Common | SOLE |
| 98956A105 | ZETA | ZETA GLOBAL HOLDINGS CORP | $7.7M | 0.41% | 486,271 | Common | SOLE |
| 28618M106 | ESI | ELEMENT SOLUTIONS INC | $7.6M | 0.40% | 221,232 | Common | SOLE |
| 76029L100 | RPAY | REPAY HLDGS CORP | $7.4M | 0.40% | 2,856,178 | Common | SOLE |
| N30577105 | ZGN | ERMENEGILDO ZEGNA N V | $7.4M | 0.39% | 710,626 | Common | SOLE |
| 96924N100 | WLDN | WILLDAN GROUP INC | $7.2M | 0.38% | 93,964 | Common | SOLE |
| 054540208 | ACLS | AXCELIS TECHNOLOGIES INC | $7.2M | 0.38% | 77,168 | Common | SOLE |
| 171779309 | CIEN | CIENA CORP | $7.2M | 0.38% | 18,466 | Common | SOLE |
| 75321W103 | PACK | RANPAK HOLDINGS CORP | $7.0M | 0.37% | 1,947,681 | Common | SOLE |
| 90138A103 | VNET | VNET GROUP INC | $6.9M | 0.37% | 825,490 | Common | SOLE |
| H5919C104 | ONON | ON HLDG AG | $6.9M | 0.37% | 202,444 | Common | SOLE |
| 65290E101 | NXT | NEXTPOWER INC | $6.8M | 0.36% | 56,747 | Common | SOLE |
| 358010106 | FEIM | FREQUENCY ELECTRS INC | $6.6M | 0.35% | 150,141 | Common | SOLE |
| 81663L200 | WGS | GENEDX HOLDINGS CORP | $6.6M | 0.35% | 102,575 | Common | SOLE |
| 874054109 | TTWO | TAKE-TWO INTERACTIVE SOFTWAR | $6.4M | 0.34% | 32,219 | Common | SOLE |
| 74276L105 | PRCT | PROCEPT BIOROBOTICS CORP | $6.3M | 0.34% | 251,716 | Common | SOLE |
| 665531307 | NOG | NORTHERN OIL & GAS INC | $6.0M | 0.32% | 204,244 | Common | SOLE |
| 14167L103 | CDNA | CAREDX INC | $5.9M | 0.31% | 340,352 | Common | SOLE |
| 09239B109 | BL | BLACKLINE INC | $5.9M | 0.31% | 159,026 | Common | SOLE |
| 30303M102 | META | META PLATFORMS INC | $5.9M | 0.31% | 10,261 | Common | SOLE |
| 15118V207 | CELH | CELSIUS HLDGS INC | $5.8M | 0.31% | 164,597 | Common | SOLE |
| 25401T603 | DBRG | DIGITALBRIDGE GROUP INC | $5.8M | 0.31% | 373,130 | Common | SOLE |
| 44951W106 | IESC | IES HOLDINGS INC | $5.7M | 0.30% | 11,869 | Common | SOLE |
| M87915274 | TSEM | TOWER SEMICONDUCTOR LTD | $5.6M | 0.30% | 32,043 | Common | SOLE |
| G037AX101 | AMBA | AMBARELLA INC | $5.6M | 0.30% | 108,749 | Common | SOLE |
| 156431108 | CENX | CENTURY ALUM CO | $5.6M | 0.30% | 95,039 | Common | SOLE |
| 87484T108 | TALO | TALOS ENERGY INC | $5.4M | 0.29% | 344,549 | Common | SOLE |
| 87961M105 | TLX | TELIX PHARMACEUTICAL LTD | $5.2M | 0.28% | 541,267 | Common | SOLE |
| 59356Q108 | MIAX | MIAMI INTL HLDGS INC | $5.0M | 0.27% | 128,819 | Common | SOLE |
| 008073108 | AVAV | AEROVIRONMENT INC | $4.9M | 0.26% | 26,880 | Common | SOLE |
| 925550105 | VIAV | VIAVI SOLUTIONS INC | $4.9M | 0.26% | 145,844 | Common | SOLE |
| 98422D105 | XPEV | XPENG INC | $4.7M | 0.25% | 275,432 | Common | SOLE |
| 71535D106 | PSNL | PERSONALIS INC | $4.7M | 0.25% | 736,713 | Common | SOLE |
| 60741F104 | MBLY | MOBILEYE GLOBAL INC | $4.7M | 0.25% | 678,135 | Common | SOLE |
| 46571Y107 | IIIV | I3 VERTICALS INC | $4.6M | 0.25% | 207,274 | Common | SOLE |
| 683344105 | ONTO | ONTO INNOVATION INC | $4.6M | 0.24% | 22,263 | Common | SOLE |
| 74347M108 | PUMP | PROPETRO HLDG CORP | $4.5M | 0.24% | 314,815 | Common | SOLE |
| 78435P105 | SEZL | SEZZLE INC | $4.4M | 0.24% | 70,046 | Common | SOLE |
| 67000B104 | NOVT | NOVANTA INC | $4.4M | 0.24% | 37,507 | Common | SOLE |
| 25961D105 | DOUG | DOUGLAS ELLIMAN INC | $4.4M | 0.23% | 2,669,030 | Common | SOLE |
| 925815102 | VICR | VICOR CORP | $4.3M | 0.23% | 26,670 | Common | SOLE |
| 55024U109 | LITE | LUMENTUM HLDGS INC | $4.1M | 0.22% | 5,822 | Common | SOLE |
| 090572207 | BIO | BIO RAD LABS INC | $4.0M | 0.21% | 14,173 | Common | SOLE |
| 801056102 | SANM | SANMINA CORP | $3.5M | 0.19% | 27,332 | Common | SOLE |
| 34631F102 | FPS | FORGENT POWER SOLUTIONS INC | $3.5M | 0.18% | 117,933 | Common | SOLE |
| 26142Q304 | DPRO | DRAGANFLY INC. | $3.4M | 0.18% | 682,730 | Common | SOLE |
| 39304D102 | GDOT | GREEN DOT CORP | $3.4M | 0.18% | 298,697 | Common | SOLE |
| 00108J109 | ACMR | ACM RESH INC | $3.3M | 0.17% | 83,256 | Common | SOLE |
| 85209W109 | SPT | SPROUT SOCIAL INC | $3.2M | 0.17% | 558,350 | Common | SOLE |
| 30234F101 | XZO | EXZEO GROUP INC | $3.1M | 0.16% | 209,885 | Common | SOLE |
| 688239201 | OSK | OSHKOSH CORP | $2.7M | 0.14% | 18,185 | Common | SOLE |
| 03823U102 | AAOI | APPLIED OPTOELECTRONICS INC | $2.5M | 0.13% | 29,833 | Common | SOLE |
| 03213A104 | AMPL | AMPLITUDE INC | $2.5M | 0.13% | 359,593 | Common | SOLE |
| 876030107 | TPR | TAPESTRY INC | $2.4M | 0.13% | 17,038 | Common | SOLE |
| G38644103 | GCT | GIGACLOUD TECHNOLOGY INC | $2.4M | 0.13% | 52,014 | Common | SOLE |
| 632307104 | NTRA | NATERA INC | $2.3M | 0.12% | 11,418 | Common | SOLE |
| 90385V107 | UCTT | ULTRA CLEAN HLDGS INC | $2.1M | 0.11% | 33,700 | Common | SOLE |
| 80007P869 | SD | SANDRIDGE ENERGY INC | $2.0M | 0.11% | 123,591 | Common | SOLE |
| 359664109 | FLGT | FULGENT GENETICS INC | $1.7M | 0.09% | 106,642 | Common | SOLE |
| 500688106 | KOS | KOSMOS ENERGY LTD | $1.7M | 0.09% | 602,542 | Common | SOLE |
| 02079K107 | GOOG | ALPHABET INC | $1.6M | 0.09% | 5,710 | Common | SOLE |
| 83418M103 | SEI | SOLARIS ENERGY INFRAS INC | $1.6M | 0.08% | 27,930 | Common | SOLE |
| 750491102 | RDNT | RADNET INC | $1.3M | 0.07% | 23,728 | Common | SOLE |
| 72703X106 | PL | PLANET LABS PBC | $1.3M | 0.07% | 47,288 | Common | SOLE |
| 40131M109 | GH | GUARDANT HEALTH INC | $1.3M | 0.07% | 14,155 | Common | SOLE |
| 147448104 | CWST | CASELLA WASTE SYS INC | $1.2M | 0.06% | 15,100 | Common | SOLE |
| 235825205 | DAN | DANA INC | $1.2M | 0.06% | 34,237 | Common | SOLE |
| 87876P201 | TGEN | TECOGEN INC NEW | $1.1M | 0.06% | 443,555 | Common | SOLE |
| 89377M109 | TMDX | TRANSMEDICS GROUP INC | $1.1M | 0.06% | 10,688 | Common | SOLE |
| 300426103 | ECG | EVERUS CONSTR GROUP | $1.0M | 0.05% | 8,725 | Common | SOLE |
| 502431109 | LHX | L3HARRIS TECHNOLOGIES INC | $744,489 | 0.04% | 2,157 | Common | SOLE |
| 36165L108 | GDS | GDS HLDGS LTD | $615,671 | 0.03% | 15,281 | Common | SOLE |
| 257554105 | DOMO | DOMO INC | $603,138 | 0.03% | 197,104 | Common | SOLE |
| 533535100 | LINC | LINCOLN EDL SVCS CORP | $569,805 | 0.03% | 14,007 | Common | SOLE |
| G31249108 | ESTA | ESTABLISHMENT LABS HLDGS INC | $543,555 | 0.03% | 9,573 | Common | SOLE |
| 03212B103 | AMPY | AMPLIFY ENERGY CORP NEW | $462,509 | 0.02% | 74,120 | Common | SOLE |
Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.