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Portolan Capital Management, LLC
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $2,670,929,331
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- VISHAY PRECISION GROUP INC · COM · 92835K103 · shares: $151,134,315
- VIRTU FINL INC · CL A · 928254101 · shares: $127,611,748
- TTM TECHNOLOGIES INC · COM · 87305R109 · shares: $94,975,863
- MODINE MFG CO · COM · 607828100 · shares: $83,759,635
- QUALYS INC · COM · 74758T303 · shares: $72,843,164
- SHIFT4 PMTS INC · CL A · 82452J109 · shares: $54,190,602
- MAYVILLE ENGR CO INC · COM · 578605107 · shares: $48,670,130
- ENOVA INTL INC · COM · 29357K103 · shares: $47,855,920
- SEMTECH CORP · COM · 816850101 · shares: $47,684,085
- CELESTICA INC · COM · 15101Q207 · shares: $46,277,069
Reported holdings
148 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| MOBILEYE GLOBAL INC | COMMON CLASS A | 60741F104 | — | 721,338 shares | $6,982,552 |
| WILLDAN GROUP INC | COM | 96924N100 | — | 84,394 shares | $6,675,565 |
| HONEST CO INC | COM | 438333106 | — | 1,740,146 shares | $6,368,934 |
| MATERION CORP | COM | 576690101 | — | 20,860 shares | $6,203,555 |
| TITAN AMER SA | COMMON SHARES | B9151N105 | — | 320,509 shares | $5,980,698 |
| GLOBAL E ONLINE LTD | SHS | M5216V106 | — | 171,521 shares | $5,956,924 |
| META PLATFORMS INC | CL A | 30303M102 | — | 10,155 shares | $5,720,210 |
| CELSIUS HLDGS INC | COM NEW | 15118V207 | — | 194,851 shares | $5,705,237 |
| THE REALREAL INC | COM | 88339P101 | — | 478,194 shares | $5,637,907 |
| E L F BEAUTY INC | COM | 26856L103 | — | 75,954 shares | $5,620,596 |
| TRANSMEDICS GROUP INC | COM | 89377M109 | — | 82,354 shares | $5,469,953 |
| RED VIOLET INC | COM | 75704L104 | — | 84,135 shares | $5,361,082 |
| DHT HOLDINGS INC | SHS NEW | Y2065G121 | — | 314,928 shares | $5,205,760 |
| EVOLV TECHNOLOGIES HLDNGS IN | COM CL A | 30049H102 | — | 894,478 shares | $5,187,972 |
| PROCEPT BIOROBOTICS CORP | COM | 74276L105 | — | 227,010 shares | $5,125,886 |
| TIMKEN CO | COM | 887389104 | — | 34,861 shares | $5,066,001 |
| LUMENTUM HLDGS INC | COM | 55024U109 | — | 5,822 shares | $4,995,625 |
| GENERAC HLDGS INC | COM | 368736104 | — | 16,852 shares | $4,934,434 |
| BRUNSWICK CORP | COM | 117043109 | — | 57,175 shares | $4,816,422 |
| EQUIPMENTSHARE COM INC | COM CL A | 29445S100 | — | 231,126 shares | $4,543,937 |
| COGNYTE SOFTWARE LTD | ORD SHS | M25133105 | — | 500,140 shares | $4,391,229 |
| NOVANTA INC | COM | 67000B104 | — | 26,972 shares | $4,375,937 |
| DOUGLAS ELLIMAN INC | COM | 25961D105 | — | 2,399,364 shares | $4,246,874 |
| BOBS DISC FURNITURE INC | COM SHS | 09681N106 | — | 249,906 shares | $3,953,513 |
| EVERUS CONSTR GROUP | COM | 300426103 | — | 23,568 shares | $3,911,110 |
| METHODE ELECTRS INC | COM | 591520200 | — | 200,000 shares | $3,794,000 |
| FABRINET | SHS | G3323L100 | — | 6,418 shares | $3,607,429 |
| ULTRA CLEAN HLDGS INC | COM | 90385V107 | — | 24,831 shares | $3,540,652 |
| KRATOS DEFENSE & SEC SOLUTIO | COM NEW | 50077B207 | — | 65,221 shares | $3,251,919 |
| NEXTPOWER INC | CLASS A COM | 65290E101 | — | 27,101 shares | $3,228,813 |
| HAFNIA LTD | SHS | Y2990R101 | — | 367,195 shares | $2,438,175 |
| NATERA INC | COM | 632307104 | — | 8,532 shares | $2,316,011 |
| GUARDANT HEALTH INC | COM | 40131M109 | — | 13,897 shares | $2,084,967 |
| GIGACLOUD TECHNOLOGY INC | CLASS A ORD | G38644103 | — | 65,644 shares | $2,074,350 |
| ALPHABET INC | CAP STK CL C | 02079K107 | — | 5,710 shares | $2,017,514 |
| APPLIED OPTOELECTRONICS INC | COM | 03823U102 | — | 11,966 shares | $1,772,883 |
| IES HOLDINGS INC | COM | 44951W106 | — | 1,940 shares | $1,425,240 |
| CASELLA WASTE SYS INC | CL A | 147448104 | — | 14,690 shares | $1,424,489 |
| PLANET LABS PBC | COM CL A | 72703X106 | — | 36,869 shares | $1,221,470 |
| AMERICAN SUPERCONDUCTOR CORP | SHS NEW | 030111207 | — | 29,314 shares | $1,216,824 |
| DANA INC | COM | 235825205 | — | 33,121 shares | $901,222 |
| DIGITALBRIDGE GROUP INC | CL A NEW | 25401T603 | — | 56,763 shares | $895,720 |
| LINCOLN EDL SVCS CORP | COM | 533535100 | — | 14,007 shares | $698,949 |
| L3HARRIS TECHNOLOGIES INC | COM | 502431109 | — | 2,157 shares | $626,803 |
| OPEN LENDING CORP | COM | 68373J104 | — | 182,803 shares | $568,517 |
| TELIX PHARMACEUTICAL LTD | SPONSORED ADS | 87961M105 | — | 25,424 shares | $293,139 |
| GDS HLDGS LTD | SPONSORED ADS | 36165L108 | — | 9,120 shares | $273,874 |
| TALOS ENERGY INC | COM | 87484T108 | — | 13,300 shares | $171,703 |