Portolan Capital Management, LLC Quant / Systematic

Location: Boston, MA

CIK: 0001350290 · Show all filings

Period: Q2 2026 (← Previous)

Filing Date: Aug 14, 2026

Total Value: $2.671B (100.0% shares, 0.0% debt)

Holdings (148)

New Positions (36)

PENG PENGUIN SOLUTIONS INC 1.6%
Value $41.51M Shares 546,173 Est. Cost Unrealized
SRAD SPORTRADAR GROUP AG 1.0%
Value $27.24M Shares 1,819,949 Est. Cost Unrealized
BAND BANDWIDTH INC 1.0%
Value $26.12M Shares 412,701 Est. Cost Unrealized
KTB KONTOOR BRANDS INC 0.9%
Value $24.34M Shares 292,115 Est. Cost Unrealized
ECPG ENCORE CAP GROUP INC 0.9%
Value $23.86M Shares 255,715 Est. Cost Unrealized
BB BLACKBERRY LTD 0.8%
Value $21.69M Shares 1,714,461 Est. Cost Unrealized
IFF INTERNATIONAL FLAVORS&FRAGRA 0.8%
Value $21.33M Shares 269,229 Est. Cost Unrealized
VSH VISHAY INTERTECHNOLOGY INC 0.7%
Value $18.9M Shares 351,515 Est. Cost Unrealized
GTES GATES INDL CORP PLC 0.7%
Value $17.95M Shares 641,587 Est. Cost Unrealized
COHU COHU INC 0.6%
Value $15.23M Shares 206,120 Est. Cost Unrealized
TENB TENABLE HLDGS INC 0.5%
Value $14.31M Shares 387,923 Est. Cost Unrealized
GEHC GE HEALTHCARE TECHNOLOGIES I 0.5%
Value $14.24M Shares 222,393 Est. Cost Unrealized
CXT CRANE NXT CO 0.5%
Value $13.89M Shares 271,524 Est. Cost Unrealized
HZO MARINEMAX INC 0.5%
Value $12.61M Shares 344,358 Est. Cost Unrealized
QMCO QUANTUM CORP 0.4%
Value $11.22M Shares 1,020,120 Est. Cost Unrealized
RACE FERRARI N V 0.4%
Value $10.83M Shares 29,079 Est. Cost Unrealized
BOOT BOOT BARN HLDGS INC 0.4%
Value $10.47M Shares 63,759 Est. Cost Unrealized
HALO HALOZYME THERAPEUTICS INC 0.4%
Value $9.979M Shares 127,498 Est. Cost Unrealized
SG SWEETGREEN INC 0.3%
Value $9.066M Shares 1,029,016 Est. Cost Unrealized
ATEN A10 NETWORKS INC 0.3%
Value $8.478M Shares 226,920 Est. Cost Unrealized
TGLS TECNOGLASS INC 0.3%
Value $8.25M Shares 176,254 Est. Cost Unrealized
SILC SILICOM LTD 0.3%
Value $7.789M Shares 162,466 Est. Cost Unrealized
RBA RB GLOBAL INC 0.3%
Value $7.337M Shares 63,009 Est. Cost Unrealized
XMTR XOMETRY INC 0.3%
Value $7.062M Shares 73,163 Est. Cost Unrealized
MTRN MATERION CORP 0.2%
Value $6.204M Shares 20,860 Est. Cost Unrealized
TTAM TITAN AMER SA 0.2%
Value $5.981M Shares 320,509 Est. Cost Unrealized
GLBE GLOBAL E ONLINE LTD 0.2%
Value $5.957M Shares 171,521 Est. Cost Unrealized
REAL THE REALREAL INC 0.2%
Value $5.638M Shares 478,194 Est. Cost Unrealized
RDVT RED VIOLET INC 0.2%
Value $5.361M Shares 84,135 Est. Cost Unrealized
TKR TIMKEN CO 0.2%
Value $5.066M Shares 34,861 Est. Cost Unrealized
GNRC GENERAC HLDGS INC 0.2%
Value $4.934M Shares 16,852 Est. Cost Unrealized
BC BRUNSWICK CORP 0.2%
Value $4.816M Shares 57,175 Est. Cost Unrealized
EQPT EQUIPMENTSHARE COM INC 0.2%
Value $4.544M Shares 231,126 Est. Cost Unrealized
CGNT COGNYTE SOFTWARE LTD 0.2%
Value $4.391M Shares 500,140 Est. Cost Unrealized
BOBS BOBS DISC FURNITURE INC 0.1%
Value $3.954M Shares 249,906 Est. Cost Unrealized
MEI METHODE ELECTRS INC 0.1%
Value $3.794M Shares 200,000 Est. Cost Unrealized

Increased Positions (49)

VIRT VIRTU FINL INC 4.8%
Value $128M (+139.4%) Shares 2,142,215 (+76.8%) Est. Cost Unrealized
QLYS QUALYS INC 2.7%
Value $72.84M (+246.9%) Shares 529,807 (+121.7%) Est. Cost Unrealized
FOUR SHIFT4 PMTS INC 2.0%
Value $54.19M (+478.3%) Shares 1,114,116 (+419.9%) Est. Cost Unrealized
ENVA ENOVA INTL INC 1.8%
Value $47.86M (+335.4%) Shares 198,795 (+145.7%) Est. Cost Unrealized
MEC MAYVILLE ENGR CO INC 1.8%
Value $48.67M (+230.2%) Shares 1,299,256 (+58.2%) Est. Cost Unrealized
GENI GENIUS SPORTS LIMITED 1.6%
Value $42.58M (+244.4%) Shares 7,025,809 (+151.7%) Est. Cost Unrealized
RRX REGAL REXNORD CORPORATION 1.2%
Value $32.75M (+224.0%) Shares 137,498 (+154.7%) Est. Cost Unrealized
VECO VEECO INSTRS INC DEL 1.1%
Value $30.44M (+254.9%) Shares 401,639 (+58.5%) Est. Cost Unrealized
ZETA ZETA GLOBAL HOLDINGS CORP 1.1%
Value $29.57M (+282.0%) Shares 1,502,738 (+209.0%) Est. Cost Unrealized
CADL CANDEL THERAPEUTICS INC 1.3%
Value $35.95M (+153.5%) Shares 3,490,398 (+20.6%) Est. Cost Unrealized
PRCH PORCH GROUP INC 1.4%
Value $36.95M (+140.2%) Shares 2,456,451 (+14.5%) Est. Cost Unrealized
OSK OSHKOSH CORP 0.9%
Value $24.19M (+803.8%) Shares 157,641 (+766.9%) Est. Cost Unrealized
ACMR ACM RESH INC 0.8%
Value $22.51M (+587.2%) Shares 177,432 (+113.1%) Est. Cost Unrealized
SEZL SEZZLE INC 0.9%
Value $23.3M (+425.5%) Shares 135,743 (+93.8%) Est. Cost Unrealized
ALNT ALLIENT INC 1.4%
Value $37.02M (+93.7%) Shares 359,685 (+11.2%) Est. Cost Unrealized
WRBY WARBY PARKER INC 1.0%
Value $25.6M (+142.7%) Shares 843,862 (+68.5%) Est. Cost Unrealized
ESI ELEMENT SOLUTIONS INC 0.8%
Value $22.4M (+196.6%) Shares 469,213 (+112.1%) Est. Cost Unrealized
TWLO TWILIO INC 0.9%
Value $23.81M (+153.1%) Shares 115,397 (+54.3%) Est. Cost Unrealized
SANM SANMINA CORP 0.6%
Value $17.27M (+387.5%) Shares 68,255 (+149.7%) Est. Cost Unrealized
CDNA CAREDX INC 0.7%
Value $19.52M (+230.3%) Shares 684,805 (+101.2%) Est. Cost Unrealized
MOG/A MOOG INC 0.8%
Value $20.88M (+142.4%) Shares 49,274 (+67.4%) Est. Cost Unrealized
RELY REMITLY GLOBAL INC 0.9%
Value $22.8M (+108.4%) Shares 1,017,592 (+45.8%) Est. Cost Unrealized
TTWO TAKE-TWO INTERACTIVE SOFTWAR 0.7%
Value $18.12M (+184.8%) Shares 72,487 (+125.0%) Est. Cost Unrealized
VICR VICOR CORP 0.5%
Value $14.46M (+236.8%) Shares 38,081 (+42.8%) Est. Cost Unrealized
ONTO ONTO INNOVATION INC 0.5%
Value $13.81M (+202.6%) Shares 36,503 (+64.0%) Est. Cost Unrealized
BIIB BIOGEN INC 1.2%
Value $30.87M (+42.1%) Shares 142,856 (+20.6%) Est. Cost Unrealized
GHM GRAHAM CORP 0.6%
Value $16.95M (+107.4%) Shares 136,925 (+32.2%) Est. Cost Unrealized
ONON ON HLDG AG 0.6%
Value $15.63M (+126.9%) Shares 441,137 (+117.9%) Est. Cost Unrealized
TLN TALEN ENERGY CORP 1.3%
Value $34.7M (+33.3%) Shares 90,312 (+10.7%) Est. Cost Unrealized
BIO BIO RAD LABS INC 0.5%
Value $12.51M (+216.7%) Shares 42,620 (+200.7%) Est. Cost Unrealized
WGS GENEDX HOLDINGS CORP 0.5%
Value $13.75M (+108.8%) Shares 200,315 (+95.3%) Est. Cost Unrealized
SEI SOLARIS ENERGY INFRAS INC 0.3%
Value $8.641M (+447.5%) Shares 107,401 (+284.5%) Est. Cost Unrealized
TGEN TECOGEN INC NEW 0.3%
Value $8.097M (+613.1%) Shares 1,551,113 (+249.7%) Est. Cost Unrealized
TPR TAPESTRY INC 0.3%
Value $9.03M (+275.6%) Shares 61,688 (+262.1%) Est. Cost Unrealized
UTHR UNITED THERAPEUTICS CORP DEL 1.7%
Value $44.17M (+17.4%) Shares 81,518 (+28.5%) Est. Cost Unrealized
PKE PARK AEROSPACE CORP 0.6%
Value $17.07M (+51.8%) Shares 447,390 (+8.9%) Est. Cost Unrealized
VIAV VIAVI SOLUTIONS INC 0.4%
Value $10.51M (+116.5%) Shares 220,118 (+50.9%) Est. Cost Unrealized
PLSE PULSE BIOSCIENCES INC 0.8%
Value $20.89M (+31.9%) Shares 753,333 (+2.7%) Est. Cost Unrealized
FORR FORRESTER RESH INC 0.5%
Value $13.66M (+56.6%) Shares 1,623,925 (+5.4%) Est. Cost Unrealized
TMDX TRANSMEDICS GROUP INC 0.2%
Value $5.47M (+414.8%) Shares 82,354 (+670.5%) Est. Cost Unrealized
AS AMER SPORTS INC 0.6%
Value $15.33M (+30.1%) Shares 452,880 (+26.6%) Est. Cost Unrealized
FEIM FREQUENCY ELECTRS INC 0.4%
Value $10.14M (+52.6%) Shares 152,818 (+1.8%) Est. Cost Unrealized
ECG EVERUS CONSTR GROUP 0.1%
Value $3.911M (+279.7%) Shares 23,568 (+170.1%) Est. Cost Unrealized
ZGN ERMENEGILDO ZEGNA N V 0.4%
Value $9.816M (+32.6%) Shares 753,948 (+6.1%) Est. Cost Unrealized
MBLY MOBILEYE GLOBAL INC 0.3%
Value $6.983M (+49.9%) Shares 721,338 (+6.4%) Est. Cost Unrealized
POWL POWELL INDS INC 1.6%
Value $41.7M (+1.6%) Shares 145,631 (+92.0%) Est. Cost Unrealized
GCT GIGACLOUD TECHNOLOGY INC 0.1%
Value $2.074M (-12.1%) Shares 65,644 (+26.2%) Est. Cost Unrealized
LUXE LUXEXPERIENCE BV 1.1%
Value $30.11M (+0.8%) Shares 4,053,147 (+8.5%) Est. Cost Unrealized
CELH CELSIUS HLDGS INC 0.2%
Value $5.705M (-2.3%) Shares 194,851 (+18.4%) Est. Cost Unrealized

Exited Positions (32)

PBF PBF ENERGY INC 1.4%
Value $38.1M Shares 799,998 Est. Cost Unrealized
CRGY CRESCENT ENERGY COMPANY 1.3%
Value $35.12M Shares 2,601,142 Est. Cost Unrealized
CNR CORE NATURAL RESOURCES INC 0.9%
Value $24.82M Shares 237,036 Est. Cost Unrealized
MUSA MURPHY USA INC 0.9%
Value $23.76M Shares 48,107 Est. Cost Unrealized
CRCL CIRCLE INTERNET GROUP INC 0.8%
Value $20.4M Shares 213,796 Est. Cost Unrealized
PRIM PRIMORIS SVCS CORP 0.7%
Value $18.68M Shares 130,626 Est. Cost Unrealized
UPWK UPWORK INC 0.6%
Value $17.21M Shares 1,570,560 Est. Cost Unrealized
RPAY REPAY HLDGS CORP 0.3%
Value $7.426M Shares 2,856,178 Est. Cost Unrealized
ACLS AXCELIS TECHNOLOGIES INC 0.3%
Value $7.183M Shares 77,168 Est. Cost Unrealized
VNET VNET GROUP INC 0.3%
Value $6.926M Shares 825,490 Est. Cost Unrealized
NOG NORTHERN OIL & GAS INC 0.2%
Value $5.97M Shares 204,244 Est. Cost Unrealized
BL BLACKLINE INC 0.2%
Value $5.884M Shares 159,026 Est. Cost Unrealized
CENX CENTURY ALUM CO 0.2%
Value $5.578M Shares 95,039 Est. Cost Unrealized
MIAX MIAMI INTL HLDGS INC 0.2%
Value $5.014M Shares 128,819 Est. Cost Unrealized
AVAV AEROVIRONMENT INC 0.2%
Value $4.92M Shares 26,880 Est. Cost Unrealized
XPEV XPENG INC 0.2%
Value $4.713M Shares 275,432 Est. Cost Unrealized
PSNL PERSONALIS INC 0.2%
Value $4.693M Shares 736,713 Est. Cost Unrealized
IIIV I3 VERTICALS INC 0.2%
Value $4.635M Shares 207,274 Est. Cost Unrealized
PUMP PROPETRO HLDG CORP 0.2%
Value $4.536M Shares 314,815 Est. Cost Unrealized
FPS FORGENT POWER SOLUTIONS INC 0.1%
Value $3.452M Shares 117,933 Est. Cost Unrealized
DPRO DRAGANFLY INC. 0.1%
Value $3.352M Shares 682,730 Est. Cost Unrealized
GDOT GREEN DOT CORP 0.1%
Value $3.351M Shares 298,697 Est. Cost Unrealized
SPT SPROUT SOCIAL INC 0.1%
Value $3.183M Shares 558,350 Est. Cost Unrealized
XZO EXZEO GROUP INC 0.1%
Value $3.079M Shares 209,885 Est. Cost Unrealized
AMPL AMPLITUDE INC 0.1%
Value $2.452M Shares 359,593 Est. Cost Unrealized
SD SANDRIDGE ENERGY INC 0.1%
Value $2.016M Shares 123,591 Est. Cost Unrealized
FLGT FULGENT GENETICS INC 0.1%
Value $1.696M Shares 106,642 Est. Cost Unrealized
KOS KOSMOS ENERGY LTD 0.1%
Value $1.675M Shares 602,542 Est. Cost Unrealized
RDNT RADNET INC 0.0%
Value $1.326M Shares 23,728 Est. Cost Unrealized
DOMO DOMO INC 0.0%
Value $603K Shares 197,104 Est. Cost Unrealized
ESTA ESTABLISHMENT LABS HLDGS INC 0.0%
Value $544K Shares 9,573 Est. Cost Unrealized
AMPY AMPLIFY ENERGY CORP NEW 0.0%
Value $463K Shares 74,120 Est. Cost Unrealized

Decreased Positions (57)

VPG VISHAY PRECISION GROUP INC 5.7%
Value $151M (+241.3%) Shares 1,008,167 (-1.1%) Est. Cost Unrealized
BIDU BAIDU INC 0.4%
Value $10.96M (-73.2%) Shares 95,863 (-73.8%) Est. Cost Unrealized
CSTL CASTLE BIOSCIENCES INC 0.3%
Value $7.842M (-76.3%) Shares 328,818 (-75.6%) Est. Cost Unrealized
FN FABRINET 0.1%
Value $3.607M (-87.4%) Shares 6,418 (-88.3%) Est. Cost Unrealized
PARR PAR PAC HOLDINGS INC 0.7%
Value $19.17M (-55.9%) Shares 341,863 (-50.7%) Est. Cost Unrealized
TTMI TTM TECHNOLOGIES INC 3.6%
Value $94.98M (+34.0%) Shares 507,838 (-30.2%) Est. Cost Unrealized
SMTC SEMTECH CORP 1.8%
Value $47.68M (+86.6%) Shares 294,619 (-11.3%) Est. Cost Unrealized
ECO OKEANIS ECO TANKERS COR 0.4%
Value $9.823M (-64.0%) Shares 195,997 (-63.6%) Est. Cost Unrealized
REAX THE REAL BROKERAGE INC 0.8%
Value $20.1M (-44.6%) Shares 11,042,364 (-23.9%) Est. Cost Unrealized
KTOS KRATOS DEFENSE & SEC SOLUTIO 0.1%
Value $3.252M (-82.2%) Shares 65,221 (-74.9%) Est. Cost Unrealized
DHT DHT HOLDINGS INC 0.2%
Value $5.206M (-73.9%) Shares 314,928 (-71.2%) Est. Cost Unrealized
HAFN HAFNIA LTD 0.1%
Value $2.438M (-83.5%) Shares 367,195 (-81.2%) Est. Cost Unrealized
AKAM AKAMAI TECHNOLOGIES INC 1.4%
Value $36.69M (-24.6%) Shares 310,361 (-26.7%) Est. Cost Unrealized
CLS CELESTICA INC 1.7%
Value $46.28M (-17.0%) Shares 126,856 (-35.9%) Est. Cost Unrealized
GOOS CANADA GOOSE HLDGS INC 1.0%
Value $26.16M (-25.9%) Shares 2,750,523 (-14.5%) Est. Cost Unrealized
AMSC AMERICAN SUPERCONDUCTOR CORP 0.0%
Value $1.217M (-87.8%) Shares 29,314 (-90.1%) Est. Cost Unrealized
FLEX FLEX LTD 1.4%
Value $37.12M (+28.0%) Shares 229,027 (-48.3%) Est. Cost Unrealized
LPRO OPEN LENDING CORP 0.0%
Value $569K (-93.4%) Shares 182,803 (-97.4%) Est. Cost Unrealized
PACK RANPAK HOLDINGS CORP 0.5%
Value $13.85M (+99.2%) Shares 1,894,855 (-2.7%) Est. Cost Unrealized
EVLV EVOLV TECHNOLOGIES HLDNGS IN 0.2%
Value $5.188M (-52.2%) Shares 894,478 (-50.2%) Est. Cost Unrealized
MOD MODINE MFG CO 3.1%
Value $83.76M (-6.2%) Shares 313,683 (-23.9%) Est. Cost Unrealized
JBL JABIL INC 0.6%
Value $15.01M (-26.8%) Shares 38,929 (-49.6%) Est. Cost Unrealized
BELFB BEL FUSE INC 0.6%
Value $15.94M (+51.4%) Shares 47,856 (-10.0%) Est. Cost Unrealized
TALO TALOS ENERGY INC 0.0%
Value $172K (-96.8%) Shares 13,300 (-96.1%) Est. Cost Unrealized
TLX TELIX PHARMACEUTICAL LTD 0.0%
Value $293K (-94.3%) Shares 25,424 (-95.3%) Est. Cost Unrealized
DBRG DIGITALBRIDGE GROUP INC 0.0%
Value $896K (-84.4%) Shares 56,763 (-84.8%) Est. Cost Unrealized
IESC IES HOLDINGS INC 0.1%
Value $1.425M (-74.8%) Shares 1,940 (-83.7%) Est. Cost Unrealized
EBAY EBAY INC. 0.3%
Value $7.347M (-36.0%) Shares 65,741 (-47.9%) Est. Cost Unrealized
NXT NEXTPOWER INC 0.1%
Value $3.229M (-52.8%) Shares 27,101 (-52.2%) Est. Cost Unrealized
ADEA ADEIA INC 0.5%
Value $14.59M (-16.8%) Shares 443,060 (-39.3%) Est. Cost Unrealized
AMBA AMBARELLA INC 0.3%
Value $8.329M (+48.8%) Shares 97,072 (-10.7%) Est. Cost Unrealized
ELF E L F BEAUTY INC 0.2%
Value $5.621M (-32.2%) Shares 75,954 (-44.4%) Est. Cost Unrealized
NOK NOKIA CORP 0.8%
Value $21.86M (+13.6%) Shares 1,645,761 (-31.3%) Est. Cost Unrealized
HNST HONEST CO INC 0.2%
Value $6.369M (-28.9%) Shares 1,740,146 (-42.9%) Est. Cost Unrealized
DGII DIGI INTL INC 0.4%
Value $10.59M (+29.0%) Shares 141,243 (-17.0%) Est. Cost Unrealized
TSEM TOWER SEMICONDUCTOR LTD 0.3%
Value $7.964M (+41.6%) Shares 30,557 (-4.6%) Est. Cost Unrealized
LASR NLIGHT INC 0.4%
Value $10.57M (-17.8%) Shares 151,867 (-32.7%) Est. Cost Unrealized
QTRX QUANTERIX CORP 0.3%
Value $8.205M (-20.9%) Shares 1,899,308 (-35.5%) Est. Cost Unrealized
CLBT CELLEBRITE DI LTD 1.1%
Value $28.21M (-6.1%) Shares 1,932,514 (-11.4%) Est. Cost Unrealized
UCTT ULTRA CLEAN HLDGS INC 0.1%
Value $3.541M (+69.0%) Shares 24,831 (-26.3%) Est. Cost Unrealized
PRCT PROCEPT BIOROBOTICS CORP 0.2%
Value $5.126M (-18.6%) Shares 227,010 (-9.8%) Est. Cost Unrealized
GH GUARDANT HEALTH INC 0.1%
Value $2.085M (+59.5%) Shares 13,897 (-1.8%) Est. Cost Unrealized
AAOI APPLIED OPTOELECTRONICS INC 0.1%
Value $1.773M (-29.7%) Shares 11,966 (-59.9%) Est. Cost Unrealized
WLDN WILLDAN GROUP INC 0.2%
Value $6.676M (-7.2%) Shares 84,394 (-10.2%) Est. Cost Unrealized
MAMA MAMAS CREATIONS INC 0.7%
Value $17.58M (-2.6%) Shares 984,869 (-16.3%) Est. Cost Unrealized
HQY HEALTHEQUITY INC 0.3%
Value $8.063M (-5.1%) Shares 89,274 (-12.2%) Est. Cost Unrealized
LNTH LANTHEUS HLDGS INC 1.2%
Value $32.03M (+1.2%) Shares 288,691 (-30.8%) Est. Cost Unrealized
GDS GDS HLDGS LTD 0.0%
Value $274K (-55.5%) Shares 9,120 (-40.3%) Est. Cost Unrealized
CIEN CIENA CORP 0.3%
Value $7.492M (+4.5%) Shares 15,272 (-17.3%) Est. Cost Unrealized
DAN DANA INC 0.0%
Value $901K (-21.8%) Shares 33,121 (-3.3%) Est. Cost Unrealized
CWST CASELLA WASTE SYS INC 0.1%
Value $1.424M (+18.9%) Shares 14,690 (-2.7%) Est. Cost Unrealized
META META PLATFORMS INC 0.2%
Value $5.72M (-2.6%) Shares 10,155 (-1.0%) Est. Cost Unrealized
LPTH LIGHTPATH TECHNOLOGIES INC 0.4%
Value $10.29M (-1.4%) Shares 629,168 (-39.5%) Est. Cost Unrealized
DOUG DOUGLAS ELLIMAN INC 0.2%
Value $4.247M (-3.0%) Shares 2,399,364 (-10.1%) Est. Cost Unrealized
PL PLANET LABS PBC 0.0%
Value $1.221M (-7.6%) Shares 36,869 (-22.0%) Est. Cost Unrealized
NOVT NOVANTA INC 0.2%
Value $4.376M (-1.2%) Shares 26,972 (-28.1%) Est. Cost Unrealized
NTRA NATERA INC 0.1%
Value $2.316M (+1.4%) Shares 8,532 (-25.3%) Est. Cost Unrealized