13F-HR filed by Portolan Capital Management, LLC
Portolan Capital Management, LLC filed this 13F-HR for the quarter ended 2026-06-30, filed 2026-08-14, with 148 holding rows worth $2,670,929,331.
- Accession
- 0001104659-26-096980
- Filer
- CIK 1350290
- Filed
- 2026-08-14
- Accepted by EDGAR
- acceptance time not in the bulk data set
- Ingested
- Source
- SEC quarterly data set
13F report for Q2 2026
A holdings report, 148 entries on the cover page, a total value of $2,670,929,331 stated on the cover page (in dollars after the unit check, H1), rows summing to $2,670,929,331 with VALUE read as dollars as filed, 13F file number 028-11602. The quarter's positions are built on this report. The resolved quarter.
The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).
| Issuer as filed | CUSIP | Class | Amount | Value | Value read as | Type |
|---|---|---|---|---|---|---|
| VISHAY PRECISION GROUP INC | 92835K103 | COM | 1,008,167 | $151,134,315 | dollars as filed | |
| VIRTU FINL INC | 928254101 | CL A | 2,142,215 | $127,611,748 | dollars as filed | |
| TTM TECHNOLOGIES INC | 87305R109 | COM | 507,838 | $94,975,863 | dollars as filed | |
| MODINE MFG CO COM | 607828100 | Stock | 313,683 | $83,759,635 | dollars as filed | |
| QUALYS INC COM | 74758T303 | Stock | 529,807 | $72,843,164 | dollars as filed | |
| SHIFT4 PMTS INC CL A | 82452J109 | Stock | 1,114,116 | $54,190,602 | dollars as filed | |
| MAYVILLE ENGINEERING CO INC | 578605107 | COMMON STOCK | 1,299,256 | $48,670,130 | dollars as filed | |
| ENOVA INTL INC | 29357K103 | COM | 198,795 | $47,855,920 | dollars as filed | |
| SEMTECH CORP COM | 816850101 | Stock | 294,619 | $47,684,085 | dollars as filed | |
| CELESTICA INC COM | 15101Q207 | Stock | 126,856 | $46,277,069 | dollars as filed | |
| UNITED THERAPEUTICS CORP DEL COM | 91307C102 | Stock | 81,518 | $44,168,898 | dollars as filed | |
| GENIUS SPORTS LIMITED SHARES CL A | G3934V109 | Stock | 7,025,809 | $42,576,403 | dollars as filed | |
| POWELL INDS INC | 739128106 | COM | 145,631 | $41,702,893 | dollars as filed | |
| PENGUIN SOLUTIONS INC COM | 706915105 | Stock | 546,173 | $41,514,610 | dollars as filed | |
| DAVE INC | 23834J201 | CLASS A COM NEW | 105,338 | $39,247,885 | dollars as filed | |
| FLEX LTD ORD | Y2573F102 | Stock | 229,027 | $37,118,406 | dollars as filed | |
| ALLIENT INC | 019330109 | COM | 359,685 | $37,022,377 | dollars as filed | |
| PORCH GROUP INC | 733245104 | COM | 2,456,451 | $36,945,023 | dollars as filed | |
| AKAMAI TECHNOLOGIES INC COM | 00971T101 | Stock | 310,361 | $36,687,774 | dollars as filed | |
| CANDEL THERAPEUTICS INC | 137404109 | COMMON STOCK | 3,490,398 | $35,951,099 | dollars as filed | |
| TALEN ENERGY CORP COM | 87422Q109 | Stock | 90,312 | $34,703,289 | dollars as filed | |
| REGAL REXNORD CORPORATION | 758750103 | COM | 137,498 | $32,750,649 | dollars as filed | |
| LANTHEUS HLDGS INC | 516544103 | COM | 288,691 | $32,027,380 | dollars as filed | |
| BIOGEN INC COM | 09062X103 | Stock | 142,856 | $30,865,467 | dollars as filed | |
| VEECO INSTRS INC DEL COM | 922417100 | Stock | 401,639 | $30,444,236 | dollars as filed | |
| LUXEXPERIENCE BV | 55406W103 | SPONSORED ADS | 4,053,147 | $30,114,882 | dollars as filed | |
| ZETA GLOBAL HOLDINGS CORP CL A | 98956A105 | Stock | 1,502,738 | $29,573,884 | dollars as filed | |
| CELLEBRITE DI LTD ORDINARY SHARES | M2197Q107 | Stock | 1,932,514 | $28,214,704 | dollars as filed | |
| SPORTRADAR GROUP AG | H8088L103 | COM | 1,819,949 | $27,244,637 | dollars as filed | |
| CANADA GOOSE HLDGS INC SHS SUB VTG | 135086106 | Stock | 2,750,523 | $26,157,474 | dollars as filed | |
| BANDWIDTH INC | 05988J103 | COM CL A | 412,701 | $26,123,973 | dollars as filed | |
| WARBY PARKER INC | 93403J106 | CL A COM | 843,862 | $25,602,773 | dollars as filed | |
| KONTOOR BRANDS INC | 50050N103 | COM | 292,115 | $24,344,864 | dollars as filed | |
| OSHKOSH CORP COM | 688239201 | Stock | 157,641 | $24,194,741 | dollars as filed | |
| ENCORE CAP GROUP INC | 292554102 | COM | 255,715 | $23,855,652 | dollars as filed | |
| TWILIO INC CL A | 90138F102 | Stock | 115,397 | $23,809,863 | dollars as filed | |
| SEZZLE INC | 78435P105 | COM | 135,743 | $23,297,571 | dollars as filed | |
| REMITLY GLOBAL INC | 75960P104 | COM | 1,017,592 | $22,804,237 | dollars as filed | |
| ACM RESH INC COM CL A | 00108J109 | Stock | 177,432 | $22,514,346 | dollars as filed | |
| ELEMENT SOLUTIONS INC COM | 28618M106 | Stock | 469,213 | $22,404,921 | dollars as filed | |
| NOKIA CORP | 654902204 | SPONSORED ADR | 1,645,761 | $21,855,706 | dollars as filed | |
| BLACKBERRY LTD COM | 09228F103 | Stock | 1,714,461 | $21,687,932 | dollars as filed | |
| INTERNATIONAL FLAVORS&FRAGRANC COM | 459506101 | Stock | 269,229 | $21,328,321 | dollars as filed | |
| PULSE BIOSCIENCES INC | 74587B101 | COMMON STOCK | 753,333 | $20,889,924 | dollars as filed | |
| MOOG INC CL A | 615394202 | Stock | 49,274 | $20,884,292 | dollars as filed | |
| THE REAL BROKERAGE INC | 75585H206 | COM NEW | 11,042,364 | $20,097,102 | dollars as filed | |
| CAREDX INC | 14167L103 | COM | 684,805 | $19,516,943 | dollars as filed | |
| PAR PAC HOLDINGS INC | 69888T207 | COM NEW | 341,863 | $19,171,677 | dollars as filed | |
| VISHAY INTERTECHNOLOGY INC COM | 928298108 | Stock | 351,515 | $18,904,477 | dollars as filed | |
| TAKE-TWO INTERACTIVE SOFTWARE COM | 874054109 | Stock | 72,487 | $18,120,300 | dollars as filed | |
| GATES INDL CORP PLC | G39108108 | ORD SHS | 641,587 | $17,945,188 | dollars as filed | |
| MAMAS CREATIONS INC COM | 56146T103 | Stock | 984,869 | $17,579,912 | dollars as filed | |
| KURA SUSHI USA INC | 501270102 | CL A COM | 302,010 | $17,383,696 | dollars as filed | |
| SANMINA CORP COM | 801056102 | Stock | 68,255 | $17,273,975 | dollars as filed | |
| PARK AEROSPACE CORP | 70014A104 | COM | 447,390 | $17,072,402 | dollars as filed | |
| GRAHAM CORP | 384556106 | COM | 136,925 | $16,949,946 | dollars as filed | |
| BEL FUSE INC | 077347300 | CL B | 47,856 | $15,937,962 | dollars as filed | |
| ON HLDG AG NAMEN AKT A | H5919C104 | Stock | 441,137 | $15,625,073 | dollars as filed | |
| AMER SPORTS INC | G0260P102 | COMMON STOCK | 452,880 | $15,325,459 | dollars as filed | |
| COHU INC | 192576106 | COM | 206,120 | $15,234,329 | dollars as filed | |
| JABIL INC COM | 466313103 | Stock | 38,929 | $15,006,351 | dollars as filed | |
| ADEIA INC | 00676P107 | COM | 443,060 | $14,589,966 | dollars as filed | |
| VICOR CORP | 925815102 | COM | 38,081 | $14,462,402 | dollars as filed | |
| TENABLE HLDGS INC | 88025T102 | COM | 387,923 | $14,306,600 | dollars as filed | |
| GE HEALTHCARE TECHNOLOGIES INC COMMON STOCK | 36266G107 | Stock | 222,393 | $14,235,376 | dollars as filed | |
| CRANE NXT CO | 224441105 | COM | 271,524 | $13,891,168 | dollars as filed | |
| RANPAK HOLDINGS CORP | 75321W103 | COMMON STOCK | 1,894,855 | $13,851,390 | dollars as filed | |
| ONTO INNOVATION INC COM | 683344105 | Stock | 36,503 | $13,814,560 | dollars as filed | |
| GENEDX HOLDINGS CORP | 81663L200 | COM CL A | 200,315 | $13,751,625 | dollars as filed | |
| FORRESTER RESH INC | 346563109 | COM | 1,623,925 | $13,657,209 | dollars as filed | |
| MARINEMAX INC | 567908108 | COM | 344,358 | $12,610,390 | dollars as filed | |
| BIO RAD LABS INC | 090572207 | CL A | 42,620 | $12,513,658 | dollars as filed | |
| QUANTUM CORPORATION | 747906600 | COM | 1,020,120 | $11,221,320 | dollars as filed | |
| BAIDU INC SPON ADR REP A | 056752108 | ADR | 95,863 | $10,956,182 | dollars as filed | |
| FERRARI N V | N3167Y103 | COM | 29,079 | $10,825,821 | dollars as filed | |
| DIGI INTL INC | 253798102 | COM | 141,243 | $10,586,163 | dollars as filed | |
| NLIGHT INC | 65487K100 | COM | 151,867 | $10,572,981 | dollars as filed | |
| VIAVI SOLUTIONS INC | 925550105 | COM | 220,118 | $10,510,635 | dollars as filed | |
| BOOT BARN HLDGS INC | 099406100 | COM | 63,759 | $10,473,691 | dollars as filed | |
| LIGHTPATH TECHNOLOGIES INC | 532257805 | COM CL A | 629,168 | $10,286,897 | dollars as filed | |
| FREQUENCY ELECTRONICS INC | 358010106 | COMMON STOCK | 152,818 | $10,139,474 | dollars as filed | |
| HALOZYME THERAPEUTICS INC COM | 40637H109 | Stock | 127,498 | $9,979,268 | dollars as filed | |
| OKEANIS ECO TANKERS COR SHS | Y64177101 | Stock | 195,997 | $9,823,370 | dollars as filed | |
| ERMENEGILDO ZEGNA NV | N30577105 | COMMON STOCK | 753,948 | $9,816,403 | dollars as filed | |
| SWEETGREEN INC | 87043Q108 | COM CL A | 1,029,016 | $9,065,631 | dollars as filed | |
| TAPESTRY INC COM | 876030107 | Stock | 61,688 | $9,029,889 | dollars as filed | |
| SOLARIS ENERGY INFRAS INC COM CL A | 83418M103 | Stock | 107,401 | $8,641,484 | dollars as filed | |
| A10 NETWORKS INC | 002121101 | COM | 226,920 | $8,477,731 | dollars as filed | |
| AMBARELLA INC | G037AX101 | SHS | 97,072 | $8,328,778 | dollars as filed | |
| TECNOGLASS INC | G87264100 | ORD SHS | 176,254 | $8,250,450 | dollars as filed | |
| QUANTERIX CORP | 74766Q101 | COMMON STOCK | 1,899,308 | $8,205,011 | dollars as filed | |
| TECOGEN INC NEW | 87876P201 | COM NEW | 1,551,113 | $8,096,810 | dollars as filed | |
| HEALTHEQUITY INC COM | 42226A107 | Stock | 89,274 | $8,063,228 | dollars as filed | |
| TOWER SEMICONDUCTOR LTD SHS NEW | M87915274 | Stock | 30,557 | $7,964,376 | dollars as filed | |
| CASTLE BIOSCIENCES INC | 14843C105 | COMMON STOCK | 328,818 | $7,842,309 | dollars as filed | |
| SILICOM LTD | M84116108 | ORD | 162,466 | $7,788,620 | dollars as filed | |
| CIENA CORP COM NEW | 171779309 | Stock | 15,272 | $7,491,832 | dollars as filed | |
| EBAY INC. COM | 278642103 | Stock | 65,741 | $7,346,557 | dollars as filed | |
| RB GLOBAL INC COM | 74935Q107 | Stock | 63,009 | $7,337,398 | dollars as filed | |
| XOMETRY INC | 98423F109 | CLASS A COM | 73,163 | $7,061,693 | dollars as filed | |
| MOBILEYE GLOBAL INC | 60741F104 | COMMON CLASS A | 721,338 | $6,982,552 | dollars as filed | |
| WILLDAN GROUP INC | 96924N100 | COM | 84,394 | $6,675,565 | dollars as filed | |
| HONEST CO INC | 438333106 | COM | 1,740,146 | $6,368,934 | dollars as filed | |
| MATERION CORP | 576690101 | COM | 20,860 | $6,203,555 | dollars as filed | |
| TITAN AMERICA SA | B9151N105 | COMMON STOCK | 320,509 | $5,980,698 | dollars as filed | |
| GLOBAL-E ONLINE LTD NPV | M5216V106 | SHS | 171,521 | $5,956,924 | dollars as filed | |
| META PLATFORMS INC CL A | 30303M102 | COM | 10,155 | $5,720,210 | dollars as filed | |
| CELSIUS HLDGS INC | 15118V207 | COM NEW | 194,851 | $5,705,237 | dollars as filed | |
| THE REALREAL INC | 88339P101 | COM | 478,194 | $5,637,907 | dollars as filed | |
| ELFBEAUTYINC | 26856L103 | STOK | 75,954 | $5,620,596 | dollars as filed | |
| TRANSMEDICS GROUP INC | 89377M109 | COM | 82,354 | $5,469,953 | dollars as filed | |
| RED VIOLET INC | 75704L104 | COMMON STOCK | 84,135 | $5,361,082 | dollars as filed | |
| DHT HOLDINGS INC | Y2065G121 | SHS NEW | 314,928 | $5,205,760 | dollars as filed | |
| EVOLV TECHNOLOGIES HLDNGS IN | 30049H102 | COM CL A | 894,478 | $5,187,972 | dollars as filed | |
| PROCEPT BIOROBOTICS CORP COM | 74276L105 | Stock | 227,010 | $5,125,886 | dollars as filed | |
| TIMKEN CO | 887389104 | COM | 34,861 | $5,066,001 | dollars as filed | |
| LUMENTUM HLDGS INC COM | 55024U109 | Stock | 5,822 | $4,995,625 | dollars as filed | |
| GENERAC HLDGS INC | 368736104 | COM | 16,852 | $4,934,434 | dollars as filed | |
| BRUNSWICK CORP | 117043109 | COM | 57,175 | $4,816,422 | dollars as filed | |
| EQUIPMENTSHARE.COM INC A | 29445S100 | COMMON STOCK | 231,126 | $4,543,937 | dollars as filed | |
| COGNYTE SOFTWARE LTD | M25133105 | ORD SHS | 500,140 | $4,391,229 | dollars as filed | |
| NOVANTA INC | 67000B104 | COM | 26,972 | $4,375,937 | dollars as filed | |
| DOUGLAS ELLIMAN INC | 25961D105 | COM | 2,399,364 | $4,246,874 | dollars as filed | |
| BOB S DISCOUNT FURNITURE | 09681N106 | COMMON STOCK | 249,906 | $3,953,513 | dollars as filed | |
| EVERUS CONSTR GROUP COM | 300426103 | Stock | 23,568 | $3,911,110 | dollars as filed | |
| METHODE ELECTRONICS INC | 591520200 | COMMON STOCK | 200,000 | $3,794,000 | dollars as filed | |
| FABRINET SHS | G3323L100 | Stock | 6,418 | $3,607,429 | dollars as filed | |
| ULTRA CLEAN HLDGS INC COM | 90385V107 | Stock | 24,831 | $3,540,652 | dollars as filed | |
| KRATOS DEFENSE & SEC SOLUTIO | 50077B207 | COM NEW | 65,221 | $3,251,919 | dollars as filed | |
| NEXTPOWER INC CLASS A COM | 65290E101 | Stock | 27,101 | $3,228,813 | dollars as filed | |
| HAFNIA LTD SHS | Y2990R101 | Stock | 367,195 | $2,438,175 | dollars as filed | |
| NATERA INC COM | 632307104 | Stock | 8,532 | $2,316,011 | dollars as filed | |
| GUARDANT HEALTH INC COM | 40131M109 | Stock | 13,897 | $2,084,967 | dollars as filed | |
| GIGACLOUD TECHNOLOGY INC | G38644103 | CLASS A ORD | 65,644 | $2,074,350 | dollars as filed | |
| Alphabet Inc. Reg. Shares C | 02079K107 | COM | 5,710 | $2,017,514 | dollars as filed | |
| APPLIED OPTOELECTRONICS INC | 03823U102 | COM | 11,966 | $1,772,883 | dollars as filed | |
| IES HOLDINGS INC | 44951W106 | COM | 1,940 | $1,425,240 | dollars as filed | |
| CASELLA WASTE SYS INC | 147448104 | CL A | 14,690 | $1,424,489 | dollars as filed | |
| PLANET LABS PBC | 72703X106 | COM CL A | 36,869 | $1,221,470 | dollars as filed | |
| AMERICAN SUPERCONDUCTOR CORP | 030111207 | SHS NEW | 29,314 | $1,216,824 | dollars as filed | |
| DANA INC | 235825205 | COM | 33,121 | $901,222 | dollars as filed | |
| DIGITALBRIDGE GROUP INC | 25401T603 | CL A NEW | 56,763 | $895,720 | dollars as filed | |
| LINCOLN EDL SVCS CORP | 533535100 | COM | 14,007 | $698,949 | dollars as filed | |
| L3HARRIS TECHNOLOGIES INC COM | 502431109 | Stock | 2,157 | $626,803 | dollars as filed | |
| OPEN LENDING CORP | 68373J104 | COM | 182,803 | $568,517 | dollars as filed | |
| TELIX PHARMACEUTICAL LTD SPONSORED ADS | 87961M105 | ADR | 25,424 | $293,139 | dollars as filed | |
| GDS HLDGS LTD SPONSORED ADS | 36165L108 | ADR | 9,120 | $273,874 | dollars as filed | |
| TALOS ENERGY INC | 87484T108 | COM | 13,300 | $171,703 | dollars as filed |
Amendment chain
| Filing | Role | Filed | Accepted | Ingested |
|---|---|---|---|---|
| 13F-HR 0001104659-26-096980 | this filing | 2026-08-14 | acceptance time not in the bulk data set |