Portolan Capital Management, LLC Quant / Systematic

Location: Boston, MA

CIK: 0001350290 · Show all filings

Period: Q1 2026 (← Previous) (Next →)

Filing Date: May 15, 2026

Total Value: $1.879B (100.0% shares, 0.0% debt)

Holdings (144)

MOD MODINE MFG CO 4.8%
Value $89.3M Shares 412,092 Est. Cost $85.88 Unrealized +105.5%
TTMI TTM TECHNOLOGIES INC 3.8%
Value $70.87M Shares 727,494 Est. Cost $19.79 Unrealized +372.0%
CLS CELESTICA INC 3.0%
Value $55.73M Shares 197,863 Est. Cost $96.70 Unrealized +211.2%
VIRT VIRTU FINL INC 2.8%
Value $53.3M Shares 1,211,887 Est. Cost $36.41 Unrealized +2.7%
AKAM AKAMAI TECHNOLOGIES INC 2.6%
Value $48.63M Shares 423,442 Est. Cost $82.26 Unrealized +16.4%
VPG VISHAY PRECISION GROUP INC 2.4%
Value $44.28M Shares 1,019,868 Est. Cost $27.38 Unrealized +68.8%
PARR PAR PAC HOLDINGS INC 2.3%
Value $43.46M Shares 693,834 Est. Cost $38.86 Unrealized 0.0%
POWL POWELL INDS INC 2.2%
Value $41.03M Shares 75,830 Est. Cost $193.39 Unrealized +143.6%
BIDU BAIDU INC 2.2%
Value $40.83M Shares 366,429 Est. Cost $125.28 Unrealized
PBF PBF ENERGY INC 2.0%
Value $38.1M Shares 799,998 Est. Cost $32.98 Unrealized 0.0%
UTHR UNITED THERAPEUTICS CORP DEL 2.0%
Value $37.62M Shares 63,435 Est. Cost $425.92 Unrealized +12.8%
REAX THE REAL BROKERAGE INC 1.9%
Value $36.3M Shares 14,519,848 Est. Cost $3.99 Unrealized -16.0%
GOOS CANADA GOOSE HLDGS INC 1.9%
Value $35.3M Shares 3,218,277 Est. Cost $11.35 Unrealized +10.9%
CRGY CRESCENT ENERGY COMPANY 1.9%
Value $35.12M Shares 2,601,142 Est. Cost $9.31 Unrealized +0.1%
CSTL CASTLE BIOSCIENCES INC 1.8%
Value $33.15M Shares 1,350,283 Est. Cost $22.93 Unrealized +60.4%
LNTH LANTHEUS HLDGS INC 1.7%
Value $31.66M Shares 417,390 Est. Cost $69.26 Unrealized -1.2%
CLBT CELLEBRITE DI LTD 1.6%
Value $30.05M Shares 2,180,924 Est. Cost $14.70 Unrealized +5.8%
LUXE LUXEXPERIENCE BV 1.6%
Value $29.87M Shares 3,733,943 Est. Cost $7.07 Unrealized
FLEX FLEXTRONICS INTL LTD 1.5%
Value $29.01M Shares 443,128 Est. Cost $32.80 Unrealized +95.1%
FN FABRINET 1.5%
Value $28.56M Shares 54,763 Est. Cost $445.92 Unrealized +10.5%
ECO OKEANIS ECO TANKERS COR 1.5%
Value $27.26M Shares 538,860 Est. Cost $38.93 Unrealized +5.5%
TLN TALEN ENERGY CORP 1.4%
Value $26.04M Shares 81,574 Est. Cost $242.16 Unrealized +52.1%
SMTC SEMTECH CORP 1.4%
Value $25.55M Shares 332,327 Est. Cost $45.08 Unrealized +82.9%
CNR CORE NATURAL RESOURCES INC 1.3%
Value $24.82M Shares 237,036 Est. Cost $88.61 Unrealized +4.7%
MUSA MURPHY USA INC 1.3%
Value $23.76M Shares 48,107 Est. Cost $412.78 Unrealized 0.0%
BIIB BIOGEN INC 1.2%
Value $21.72M Shares 118,481 Est. Cost $168.99 Unrealized +8.4%
KRUS KURA SUSHI USA INC 1.1%
Value $21.02M Shares 301,212 Est. Cost $76.21 Unrealized -8.4%
QLYS QUALYS INC 1.1%
Value $21M Shares 239,028 Est. Cost $124.28 Unrealized -3.0%
JBL JABIL INC 1.1%
Value $20.51M Shares 77,197 Est. Cost $216.23 Unrealized +14.7%
CRCL CIRCLE INTERNET GROUP INC 1.1%
Value $20.4M Shares 213,796 Est. Cost $69.72 Unrealized 0.0%
DHT DHT HOLDINGS INC 1.1%
Value $19.95M Shares 1,091,788 Est. Cost $14.32 Unrealized 0.0%
NOK NOKIA CORP 1.0%
Value $19.25M Shares 2,393,970 Est. Cost $7.33 Unrealized
ALNT ALLIENT INC 1.0%
Value $19.11M Shares 323,453 Est. Cost $45.35 Unrealized +38.6%
PRIM PRIMORIS SVCS CORP 1.0%
Value $18.68M Shares 130,626 Est. Cost $93.15 Unrealized +60.9%
DAVE DAVE INC 1.0%
Value $18.36M Shares 105,442 Est. Cost $199.33 Unrealized -5.7%
KTOS KRATOS DEFENSE & SEC SOLUTIO 1.0%
Value $18.32M Shares 259,811 Est. Cost $18.24 Unrealized +461.5%
MAMA MAMAS CREATIONS INC 1.0%
Value $18.05M Shares 1,176,936 Est. Cost $7.02 Unrealized +111.1%
ADEA ADEIA INC 0.9%
Value $17.53M Shares 729,461 Est. Cost $17.33 Unrealized +7.9%
UPWK UPWORK INC 0.9%
Value $17.21M Shares 1,570,560 Est. Cost $17.26 Unrealized +3.9%
PLSE PULSE BIOSCIENCES INC 0.8%
Value $15.83M Shares 733,372 Est. Cost $16.40 Unrealized +5.3%
PRCH PORCH GROUP INC 0.8%
Value $15.38M Shares 2,144,890 Est. Cost $5.95 Unrealized +38.3%
HAFN HAFNIA LTD 0.8%
Value $14.81M Shares 1,948,717 Est. Cost $6.21 Unrealized 0.0%
MEC MAYVILLE ENGR CO INC 0.8%
Value $14.74M Shares 821,136 Est. Cost $17.61 Unrealized +12.3%
CADL CANDEL THERAPEUTICS INC 0.8%
Value $14.18M Shares 2,894,325 Est. Cost $5.70 Unrealized +0.7%
LASR NLIGHT INC 0.7%
Value $12.86M Shares 225,576 Est. Cost $24.80 Unrealized +92.4%
GENI GENIUS SPORTS LIMITED 0.7%
Value $12.36M Shares 2,791,018 Est. Cost $6.34 Unrealized +31.0%
AS AMER SPORTS INC 0.6%
Value $11.78M Shares 357,826 Est. Cost $38.20 Unrealized 0.0%
EBAY EBAY INC. 0.6%
Value $11.48M Shares 126,096 Est. Cost $87.96 Unrealized +1.5%
PKE PARK AEROSPACE CORP 0.6%
Value $11.24M Shares 410,655 Est. Cost $20.67 Unrealized +18.2%
ENVA ENOVA INTL INC 0.6%
Value $10.99M Shares 80,923 Est. Cost $64.28 Unrealized +142.6%
RELY REMITLY GLOBAL INC 0.6%
Value $10.94M Shares 698,166 Est. Cost $14.47 Unrealized -3.6%
EVLV EVOLV TECHNOLOGIES HLDNGS IN 0.6%
Value $10.86M Shares 1,795,688 Est. Cost $6.08 Unrealized 0.0%
WRBY WARBY PARKER INC 0.6%
Value $10.55M Shares 500,706 Est. Cost $19.74 Unrealized +27.7%
BELFB BEL FUSE INC 0.6%
Value $10.53M Shares 53,170 Est. Cost $101.69 Unrealized +106.8%
LPTH LIGHTPATH TECHNOLOGIES INC 0.6%
Value $10.44M Shares 1,040,462 Est. Cost $5.56 Unrealized +110.8%
QTRX QUANTERIX CORP 0.6%
Value $10.37M Shares 2,945,823 Est. Cost $12.01 Unrealized -45.9%
RRX REGAL REXNORD CORPORATION 0.5%
Value $10.11M Shares 53,975 Est. Cost $164.47 Unrealized +10.1%
AMSC AMERICAN SUPERCONDUCTOR CORP 0.5%
Value $10.01M Shares 295,636 Est. Cost $31.71 Unrealized 0.0%
TWLO TWILIO INC 0.5%
Value $9.407M Shares 74,769 Est. Cost $121.87 Unrealized 0.0%
FOUR SHIFT4 PMTS INC 0.5%
Value $9.371M Shares 214,284 Est. Cost $78.12 Unrealized -22.1%
HNST HONEST CO INC 0.5%
Value $8.955M Shares 3,045,834 Est. Cost $3.05 Unrealized -20.7%
FORR FORRESTER RESH INC 0.5%
Value $8.724M Shares 1,541,276 Est. Cost $10.57 Unrealized -31.0%
LPRO OPEN LENDING CORP 0.5%
Value $8.629M Shares 6,902,888 Est. Cost $2.02 Unrealized -14.5%
MOG/A MOOG INC 0.5%
Value $8.614M Shares 29,437 Est. Cost $302.54 Unrealized 0.0%
VECO VEECO INSTRS INC DEL 0.5%
Value $8.579M Shares 253,379 Est. Cost $31.57 Unrealized 0.0%
HQY HEALTHEQUITY INC 0.5%
Value $8.495M Shares 101,646 Est. Cost $83.16 Unrealized 0.0%
ELF E L F BEAUTY INC 0.4%
Value $8.286M Shares 136,707 Est. Cost $80.69 Unrealized +6.2%
DGII DIGI INTL INC 0.4%
Value $8.206M Shares 170,256 Est. Cost $40.05 Unrealized +12.9%
GHM GRAHAM CORP 0.4%
Value $8.173M Shares 103,556 Est. Cost $75.79 Unrealized 0.0%
ZETA ZETA GLOBAL HOLDINGS CORP 0.4%
Value $7.741M Shares 486,271 Est. Cost $13.02 Unrealized +47.6%
ESI ELEMENT SOLUTIONS INC 0.4%
Value $7.553M Shares 221,232 Est. Cost $30.49 Unrealized 0.0%
RPAY REPAY HLDGS CORP 0.4%
Value $7.426M Shares 2,856,178 Est. Cost $5.02 Unrealized -32.1%
ZGN ERMENEGILDO ZEGNA N V 0.4%
Value $7.405M Shares 710,626 Est. Cost $8.26 Unrealized +25.9%
WLDN WILLDAN GROUP INC 0.4%
Value $7.194M Shares 93,964 Est. Cost $97.72 Unrealized +23.6%
ACLS AXCELIS TECHNOLOGIES INC 0.4%
Value $7.183M Shares 77,168 Est. Cost $89.10 Unrealized 0.0%
CIEN CIENA CORP 0.4%
Value $7.169M Shares 18,466 Est. Cost $101.84 Unrealized +166.0%
PACK RANPAK HOLDINGS CORP 0.4%
Value $6.953M Shares 1,947,681 Est. Cost $5.11 Unrealized +8.7%
VNET VNET GROUP INC 0.4%
Value $6.926M Shares 825,490 Est. Cost $9.74 Unrealized
ONON ON HLDG AG 0.4%
Value $6.887M Shares 202,444 Est. Cost $46.33 Unrealized 0.0%
NXT NEXTPOWER INC 0.4%
Value $6.841M Shares 56,747 Est. Cost $90.67 Unrealized +20.0%
FEIM FREQUENCY ELECTRS INC 0.4%
Value $6.645M Shares 150,141 Est. Cost $34.01 Unrealized +55.8%
WGS GENEDX HOLDINGS CORP 0.4%
Value $6.587M Shares 102,575 Est. Cost $95.54 Unrealized +5.8%
TTWO TAKE-TWO INTERACTIVE SOFTWAR 0.3%
Value $6.363M Shares 32,219 Est. Cost $145.67 Unrealized +54.4%
PRCT PROCEPT BIOROBOTICS CORP 0.3%
Value $6.295M Shares 251,716 Est. Cost $33.16 Unrealized -10.8%
NOG NORTHERN OIL & GAS INC 0.3%
Value $5.97M Shares 204,244 Est. Cost $24.29 Unrealized 0.0%
CDNA CAREDX INC 0.3%
Value $5.909M Shares 340,352 Est. Cost $18.29 Unrealized +7.7%
BL BLACKLINE INC 0.3%
Value $5.884M Shares 159,026 Est. Cost $46.64 Unrealized 0.0%
META META PLATFORMS INC 0.3%
Value $5.871M Shares 10,261 Est. Cost $147.85 Unrealized +343.4%
CELH CELSIUS HLDGS INC 0.3%
Value $5.84M Shares 164,597 Est. Cost $50.69 Unrealized 0.0%
DBRG DIGITALBRIDGE GROUP INC 0.3%
Value $5.754M Shares 373,130 Est. Cost $11.04 Unrealized +39.4%
IESC IES HOLDINGS INC 0.3%
Value $5.655M Shares 11,869 Est. Cost $401.94 Unrealized +13.6%
TSEM TOWER SEMICONDUCTOR LTD 0.3%
Value $5.623M Shares 32,043 Est. Cost $49.18 Unrealized +162.0%
AMBA AMBARELLA INC 0.3%
Value $5.598M Shares 108,749 Est. Cost $74.01 Unrealized -9.1%
CENX CENTURY ALUM CO 0.3%
Value $5.578M Shares 95,039 Est. Cost $48.41 Unrealized 0.0%
TALO TALOS ENERGY INC 0.3%
Value $5.43M Shares 344,549 Est. Cost $11.42 Unrealized +4.4%
TLX TELIX PHARMACEUTICAL LTD 0.3%
Value $5.18M Shares 541,267 Est. Cost $9.57 Unrealized
MIAX MIAMI INTL HLDGS INC 0.3%
Value $5.014M Shares 128,819 Est. Cost $42.00 Unrealized 0.0%
AVAV AEROVIRONMENT INC 0.3%
Value $4.92M Shares 26,880 Est. Cost $169.27 Unrealized +75.1%
VIAV VIAVI SOLUTIONS INC 0.3%
Value $4.854M Shares 145,844 Est. Cost $22.97 Unrealized 0.0%
XPEV XPENG INC 0.3%
Value $4.713M Shares 275,432 Est. Cost $18.23 Unrealized
PSNL PERSONALIS INC 0.2%
Value $4.693M Shares 736,713 Est. Cost $8.84 Unrealized +1.1%
MBLY MOBILEYE GLOBAL INC 0.2%
Value $4.659M Shares 678,135 Est. Cost $11.21 Unrealized -11.6%
IIIV I3 VERTICALS INC 0.2%
Value $4.635M Shares 207,274 Est. Cost $22.92 Unrealized +2.6%
ONTO ONTO INNOVATION INC 0.2%
Value $4.565M Shares 22,263 Est. Cost $206.81 Unrealized 0.0%
PUMP PROPETRO HLDG CORP 0.2%
Value $4.536M Shares 314,815 Est. Cost $10.86 Unrealized 0.0%
SEZL SEZZLE INC 0.2%
Value $4.433M Shares 70,046 Est. Cost $68.16 Unrealized -1.0%
NOVT NOVANTA INC 0.2%
Value $4.43M Shares 37,507 Est. Cost $113.88 Unrealized +19.2%
DOUG DOUGLAS ELLIMAN INC 0.2%
Value $4.377M Shares 2,669,030 Est. Cost $2.28 Unrealized +11.4%
VICR VICOR CORP 0.2%
Value $4.294M Shares 26,670 Est. Cost $85.01 Unrealized +84.8%
LITE LUMENTUM HLDGS INC 0.2%
Value $4.091M Shares 5,822 Est. Cost $124.70 Unrealized +274.6%
BIO BIO RAD LABS INC 0.2%
Value $3.951M Shares 14,173 Est. Cost $286.81 Unrealized +4.2%
SANM SANMINA CORP 0.2%
Value $3.543M Shares 27,332 Est. Cost $147.61 Unrealized +6.2%
FPS FORGENT POWER SOLUTIONS INC 0.2%
Value $3.452M Shares 117,933 Est. Cost $29.27 Unrealized
DPRO DRAGANFLY INC. 0.2%
Value $3.352M Shares 682,730 Est. Cost $8.18 Unrealized 0.0%
GDOT GREEN DOT CORP 0.2%
Value $3.351M Shares 298,697 Est. Cost $9.26 Unrealized +31.5%
ACMR ACM RESH INC 0.2%
Value $3.276M Shares 83,256 Est. Cost $29.69 Unrealized +92.2%
SPT SPROUT SOCIAL INC 0.2%
Value $3.183M Shares 558,350 Est. Cost $9.85 Unrealized -11.3%
XZO EXZEO GROUP INC 0.2%
Value $3.079M Shares 209,885 Est. Cost $19.02 Unrealized +1.5%
OSK OSHKOSH CORP 0.1%
Value $2.677M Shares 18,185 Est. Cost $127.92 Unrealized +23.5%
AAOI APPLIED OPTOELECTRONICS INC 0.1%
Value $2.524M Shares 29,833 Est. Cost $17.74 Unrealized +135.7%
AMPL AMPLITUDE INC 0.1%
Value $2.452M Shares 359,593 Est. Cost $10.52 Unrealized -15.4%
TPR TAPESTRY INC 0.1%
Value $2.404M Shares 17,038 Est. Cost $57.71 Unrealized +141.9%
GCT GIGACLOUD TECHNOLOGY INC 0.1%
Value $2.36M Shares 52,014 Est. Cost $15.99 Unrealized +145.1%
NTRA NATERA INC 0.1%
Value $2.283M Shares 11,418 Est. Cost $63.61 Unrealized +255.1%
UCTT ULTRA CLEAN HLDGS INC 0.1%
Value $2.095M Shares 33,700 Est. Cost $46.90 Unrealized 0.0%
SD SANDRIDGE ENERGY INC 0.1%
Value $2.016M Shares 123,591 Est. Cost $13.23 Unrealized +18.7%
FLGT FULGENT GENETICS INC 0.1%
Value $1.696M Shares 106,642 Est. Cost $25.94 Unrealized -1.2%
KOS KOSMOS ENERGY LTD 0.1%
Value $1.675M Shares 602,542 Est. Cost $1.45 Unrealized 0.0%
GOOG ALPHABET INC 0.1%
Value $1.638M Shares 5,710 Est. Cost $135.59 Unrealized +138.7%
SEI SOLARIS ENERGY INFRAS INC 0.1%
Value $1.578M Shares 27,930 Est. Cost $37.75 Unrealized +40.5%
RDNT RADNET INC 0.1%
Value $1.326M Shares 23,728 Est. Cost $56.72 Unrealized +26.1%
PL PLANET LABS PBC 0.1%
Value $1.322M Shares 47,288 Est. Cost $7.71 Unrealized +214.7%
GH GUARDANT HEALTH INC 0.1%
Value $1.307M Shares 14,155 Est. Cost $89.46 Unrealized +20.1%
CWST CASELLA WASTE SYS INC 0.1%
Value $1.198M Shares 15,100 Est. Cost $66.49 Unrealized +53.0%
DAN DANA INC 0.1%
Value $1.152M Shares 34,237 Est. Cost $21.12 Unrealized +43.7%
TGEN TECOGEN INC NEW 0.1%
Value $1.136M Shares 443,555 Est. Cost $4.88 Unrealized -13.7%
TMDX TRANSMEDICS GROUP INC 0.1%
Value $1.062M Shares 10,688 Est. Cost $119.49 Unrealized +13.3%
ECG EVERUS CONSTR GROUP 0.1%
Value $1.03M Shares 8,725 Est. Cost $74.30 Unrealized +29.3%
LHX L3HARRIS TECHNOLOGIES INC 0.0%
Value $744K Shares 2,157 Est. Cost $227.05 Unrealized +51.1%
GDS GDS HLDGS LTD 0.0%
Value $616K Shares 15,281 Est. Cost $38.38 Unrealized
DOMO DOMO INC 0.0%
Value $603K Shares 197,104 Est. Cost $12.80 Unrealized -54.9%
LINC LINCOLN EDL SVCS CORP 0.0%
Value $570K Shares 14,007 Est. Cost $20.06 Unrealized +36.8%
ESTA ESTABLISHMENT LABS HLDGS INC 0.0%
Value $544K Shares 9,573 Est. Cost $41.70 Unrealized +68.7%
AMPY AMPLIFY ENERGY CORP NEW 0.0%
Value $463K Shares 74,120 Est. Cost $4.98 Unrealized +0.2%