ESSEX INVESTMENT MANAGEMENT CO LLC - Stock Holdings in 13F Filings (SEC)
Updated on March 15, 2026.
Based on 13F Filings filed with the SEC on February 13, 2026, for the 2025 Q4 period, ESSEX INVESTMENT MANAGEMENT CO LLC held in its portfolio 306 assets valued at $655,942,147 (i.e. $655.94M).
The most valuable assets in the portfolio included: TOWER SEMICONDUCTOR LTD ($22.62M), KRATOS DEFENSE & SEC SOLUTIONS ($14.44M), and STERLING INFRASTRUCTURE INC ($13.68M).
The chart below shows the top 10 valuable assets, and the table below shows the top 306 valuable assets.
You can see similar for other investment managers.
Related Topics: SEC Topic List.
Data Source: SEC.
ESSEX INVESTMENT MANAGEMENT CO LLC - Stock Holdings in 13F Filings (SEC)
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| Name of Issuer | No. of Shares | Value ($) | Class |
|---|---|---|---|
| TOWER SEMICONDUCTOR LTD | 192628 | 22618380 | COM |
| KRATOS DEFENSE & SEC SOLUTIONS | 190194 | 14437627 | COM |
| STERLING INFRASTRUCTURE INC | 44685 | 13683888 | COM |
| HCI GROUP INC | 59209 | 11349773 | COM |
| LIGAND PHARMACEUTICALS INC | 60020 | 11347981 | COM |
| INSMED INC | 62423 | 10864099 | COM |
| KINIKSA PHARMACEUTICALS INTL P | 250975 | 10352719 | COM |
| GLOBALSTAR INC | 167389 | 10217425 | COM |
| ADAPTIVE BIOTECHNOLOGIES CORP | 624217 | 10137284 | COM |
| APPLE INC | 34868 | 9479214 | COM |
| LINCOLN EDL SVCS CORP | 388819 | 9389979 | COM |
| CECO ENVIRONMENTAL CORP | 154457 | 9244251 | COM |
| GRAHAM CORP | 140691 | 9036583 | COM |
| MIRUM PHARMACEUTICALS INC | 111310 | 8792377 | COM |
| LEONARDO DRS INC | 256862 | 8756426 | COM |
| ARGAN INC | 27628 | 8656405 | COM |
| MICROSOFT CORP | 17613 | 8517999 | COM |
| WILLDAN GROUP INC | 76921 | 7973631 | COM |
| GOLDMAN SACHS GROUP INC | 8659 | 7611261 | COM |
| TETRA TECHNOLOGIES INC DEL | 760393 | 7124882 | COM |
| MIRION TECHNOLOGIES INC | 303352 | 7104504 | COM |
| EXZEO GROUP INC | 291076 | 7058593 | COM |
| AVEPOINT INC | 508014 | 7056314 | COM |
| AGNICO EAGLE MINES LTD | 40022 | 6784930 | COM |
| AMAZON COM INC | 28833 | 6655233 | COM |
| BETA BIONICS INC | 217796 | 6636244 | COM |
| PRIMORIS SVCS CORP | 50981 | 6328781 | COM |
| EVERQUOTE INC | 231424 | 6248448 | COM |
| ADVANCED DRAIN SYS INC DEL | 42835 | 6203793 | COM |
| AMERICAN SUPERCONDUCTOR CORP | 215154 | 6192132 | COM |
| TRAVERE THERAPEUTICS INC | 158709 | 6064271 | COM |
| UNIVERSAL INS HLDGS INC | 177374 | 5995241 | COM |
| AMBARELLA INC | 83843 | 5939438 | COM |
| BRAINSWAY LTD | 304180 | 5785504 | ADR |
| XERIS BIOPHARMA HOLDINGS INC | 734532 | 5766076 | COM |
| GE VERNOVA INC | 8603 | 5622663 | COM |
| SALESFORCE INC | 19080 | 5054483 | COM |
| PATRICK INDS INC | 45941 | 4981383 | COM |
| LSI INDS INC OHIO | 269248 | 4932623 | COM |
| FREQUENCY ELECTRS INC | 91380 | 4919899 | COM |
| PEGASYSTEMS INC | 79424 | 4743201 | COM |
| CREXENDO INC | 729877 | 4722304 | COM |
| BWX TECHNOLOGIES INC | 27247 | 4709371 | COM |
| OCULAR THERAPEUTIX INC | 385825 | 4683916 | COM |
| ANGIODYNAMICS INC | 360544 | 4629385 | COM |
| MAMAS CREATIONS INC | 335624 | 4527568 | COM |
| GUIDEWIRE SOFTWARE INC | 22514 | 4525539 | COM |
| GLOBUS MED INC | 51409 | 4488520 | COM |
| ORION GROUP HLDGS INC | 449761 | 4470624 | COM |
| WINNEBAGO INDS INC | 109490 | 4436535 | COM |
| ARTERIS INC | 285167 | 4420089 | COM |
| COHU INC | 188533 | 4387163 | COM |
| SI-BONE INC | 208722 | 4115998 | COM |
| CS DISCO INC | 529780 | 4111093 | COM |
| MAXLINEAR INC | 235595 | 4106421 | COM |
| ARCUTIS BIOTHERAPEUTICS INC | 141271 | 4102510 | COM |
| AMPRIUS TECHNOLOGIES INC | 516765 | 4077276 | COM |
| ASML HOLDING N V | 3806 | 4071887 | ADR |
| GENTHERM INC | 111037 | 4038416 | COM |
| GREAT LAKES DREDGE & DOCK CORP | 301986 | 3962056 | COM |
| JAZZ PHARMACEUTICALS PLC | 23195 | 3943150 | COM |
| OUSTER INC | 181326 | 3923895 | COM |
| DOLLAR TREE INC | 31777 | 3908889 | COM |
| FREIGHTCAR AMER INC | 346144 | 3831814 | COM |
| OCEANEERING INTL INC | 155434 | 3735079 | COM |
| SEMTECH CORP | 49707 | 3662909 | COM |
| STEREOTAXIS INC | 1562019 | 3592644 | COM |
| COLUMBUS MCKINNON CORP N Y | 207990 | 3587828 | COM |
| DAKTRONICS INC | 178876 | 3536379 | COM |
| TRIMBLE INC | 43608 | 3416687 | COM |
| RED VIOLET INC | 59863 | 3409198 | COM |
| WORKIVA INC | 39520 | 3408600 | COM |
| GRIFFON CORP | 46200 | 3402630 | COM |
| NEUROPACE INC | 213892 | 3302492 | COM |
| LIQUIDITY SVCS INC | 106088 | 3215527 | COM |
| EVERUS CONSTR GROUP | 37392 | 3199260 | COM |
| OCTAVE SPECIALTY GROUP INC | 410822 | 3196195 | COM |
| VAREX IMAGING CORP | 274339 | 3196049 | COM |
| AXSOME THERAPEUTICS INC | 17381 | 3174466 | COM |
| CONCENTRA GROUP HOLDINGS PAREN | 160645 | 3161494 | COM |
| PARK AEROSPACE CORP | 147248 | 3142272 | COM |
| AMERANT BANCORP INC | 154090 | 3006296 | COM |
| RADCOM LTD | 228305 | 2986229 | COM |
| EVERCORE INC | 8769 | 2983652 | COM |
| BGC GROUP INC | 330509 | 2951445 | COM |
| PAYMENTUS HOLDINGS INC | 93075 | 2940239 | COM |
| CERAGON NETWORKS LTD | 1391697 | 2922564 | COM |
| BIOVENTUS INC | 387886 | 2885872 | COM |
| IDENTIV INC | 723685 | 2778950 | COM |
| ZSCALER INC | 12238 | 2752571 | COM |
| MONTROSE ENVIRONMENTAL GROUP I | 109513 | 2719208 | COM |
| UPWORK INC | 135636 | 2688306 | COM |
| BAKER HUGHES COMPANY | 58692 | 2672834 | COM |
| JOURNEY MED CORP | 345977 | 2667483 | COM |
| DISNEY WALT CO | 23423 | 2664835 | COM |
| LEGALZOOM COM INC | 267857 | 2659820 | COM |
| ARLO TECHNOLOGIES INC | 188919 | 2642977 | COM |
| INFUSYSTEM HLDGS INC | 294057 | 2637691 | COM |
| EXTREME NETWORKS | 155087 | 2582199 | COM |
| 908 DEVICES INC | 482614 | 2533724 | COM |
| BLACKSKY TECHNOLOGY INC | 133696 | 2506800 | COM |
| ZETA GLOBAL HOLDINGS CORP | 120943 | 2461190 | COM |
| PROFOUND MED CORP | 309604 | 2436583 | COM |
| NOVANTA INC | 20337 | 2419900 | COM |
| CURIOSITYSTREAM INC | 609929 | 2317730 | COM |
| EYEPOINT INC | 124956 | 2282946 | COM |
| BLEND LABS INC | 748974 | 2276881 | COM |
| INTUIT | 3429 | 2271438 | COM |
| DOCEBO INC | 101003 | 2242267 | COM |
| INFORMATION SVCS GROUP INC | 376654 | 2177060 | COM |
| IBEX LTD | 56733 | 2166066 | COM |
| INTELLICHECK INC | 321893 | 2150245 | COM |
| FIRST SOLAR INC | 8021 | 2095326 | COM |
| CARECLOUD INC | 684904 | 1999920 | COM |
| INFINEON TECHNOLOGIES AG | 45129 | 1999757 | COM |
| EXPRO GROUP HOLDINGS NV | 147519 | 1969379 | COM |
| CASTELLUM INC | 2114029 | 1909391 | COM |
| RIVERVIEW BANCORP INC | 379979 | 1907495 | COM |
| PAYCHEX INC | 16671 | 1870153 | COM |
| ENERGY RECOVERY INC | 135100 | 1822499 | COM |
| PHREESIA INC | 102423 | 1732997 | COM |
| MATADOR RES CO | 39196 | 1663478 | COM |
| GENCOR INDS INC | 126106 | 1634334 | COM |
| BADGER METER INC | 9358 | 1632129 | COM |
| CHENIERE ENERGY INC | 8263 | 1606245 | COM |
| TEMPUS AI INC | 27143 | 1602794 | COM |
| SOUTHLAND HLDGS INC | 475723 | 1579400 | COM |
| VALMONT INDS INC | 3877 | 1559795 | COM |
| AMERICAN EXPRESS CO | 3965 | 1466852 | COM |
| XYLEM INC | 10767 | 1466250 | COM |
| FREIGHTOS LTD | 618564 | 1410326 | COM |
| BUILDERS FIRSTSOURCE INC | 13482 | 1387163 | COM |
| PROCTER AND GAMBLE CO | 9432 | 1351700 | COM |
| SAMSARA INC | 36982 | 1311012 | COM |
| COGNEX CORP | 36260 | 1304635 | COM |
| CORTEVA INC | 19078 | 1278798 | COM |
| NEXTERA ENERGY INC | 15170 | 1217848 | COM |
| BARRICK MNG CORP | 26898 | 1171408 | COM |
| RIVIAN AUTOMOTIVE INC | 57807 | 1139376 | COM |
| VALERO ENERGY CORP | 6302 | 1025903 | COM |
| COCA COLA CO | 14302 | 999853 | COM |
| GALLAGHER ARTHUR J & CO | 3746 | 969427 | COM |
| VERALTO CORP | 9326 | 930548 | COM |
| MEDTRONIC PLC | 9651 | 927075 | COM |
| COLGATE PALMOLIVE CO | 11360 | 897667 | COM |
| JPMORGAN CHASE & CO. | 2721 | 876761 | COM |
| AIR PRODS & CHEMS INC | 3533 | 872722 | COM |
| MACOM TECH SOLUTIONS HLDGS INC | 4919 | 842526 | COM |
| MARTIN MARIETTA MATLS INC | 1333 | 830006 | COM |
| SHOALS TECHNOLOGIES GROUP INC | 95725 | 813663 | COM |
| YASKAWA ELEC CORP | 26595 | 806953 | COM |
| AEVA TECHNOLOGIES INC | 59564 | 791010 | COM |
| PROTO LABS INC | 15504 | 784347 | COM |
| ENPHASE ENERGY INC | 24135 | 773527 | COM |
| PEPSICO INC | 5321 | 763670 | COM |
| FLUENCE ENERGY INC | 38558 | 762677 | COM |
| CARRIER GLOBAL CORPORATION | 14297 | 755453 | COM |
| ON SEMICONDUCTOR CORP | 13652 | 739256 | COM |
| NEXTPOWER INC | 8326 | 725278 | COM |
| MARSH & MCLENNAN COS INC | 3899 | 723342 | COM |
| DEERE & CO | 1468 | 683457 | COM |
| QUANTA SVCS INC | 1575 | 664745 | COM |
| FRANCO NEV CORP | 2999 | 621633 | COM |
| ISHARES TR | 1910 | 616949 | ETF |
| DRAGONFLY ENERGY HOLDINGS CORP | 196007 | 601740 | COM |
| WHEATON PRECIOUS METALS CORP | 4906 | 576553 | COM |
| VERIZON COMMUNICATIONS INC | 13333 | 543053 | COM |
| ONE STOP SYS INC | 69356 | 497976 | COM |
| JOHNSON & JOHNSON | 2386 | 493783 | COM |
| AMTECH SYS INC | 37816 | 474591 | COM |
| NEWMONT CORP | 4741 | 473389 | COM |
| ACM RESH INC | 11770 | 464327 | COM |
| OWLET INC | 28563 | 462435 | COM |
| EMCOR GROUP INC | 750 | 458843 | COM |
| LIGHTPATH TECHNOLOGIES INC | 40907 | 441796 | COM |
| ARRAY TECHNOLOGIES INC | 46725 | 430805 | COM |
| VANGUARD INDEX FDS | 1206 | 404336 | ETF |
| SNAP ON INC | 1125 | 387675 | COM |
| NOVARTIS AG | 2775 | 382589 | ADR |
| GRAND CANYON ED INC | 2300 | 382513 | COM |
| LENSAR INC | 30034 | 349295 | COM |
| ETON PHARMACEUTICALS INC | 20182 | 341278 | COM |
| OPTEX SYS HLDGS INC | 23126 | 327927 | COM |
| GE AEROSPACE | 1059 | 326204 | COM |
| STRATTEC SEC CORP | 4207 | 320321 | COM |
| CAMTEK LTD | 2943 | 312973 | COM |
| SITIME CORP | 850 | 300212 | COM |
| PERMA-PIPE INTL HLDGS INC | 9526 | 289209 | COM |
| AXCELIS TECHNOLOGIES INC | 3350 | 269139 | COM |
| BROADWIND INC | 94788 | 268250 | COM |
| AMPLITECH GROUP INC | 87840 | 262642 | COM |
| BYD CO LTD | 20626 | 249781 | ADR |
| DUKE ENERGY CORP NEW | 2122 | 248720 | COM |
| EQUINOR ASA | 10457 | 247099 | ADR |
| DATA I O CORP | 74641 | 236612 | COM |
| GEOSPACE TECHNOLOGIES CORP | 13636 | 230585 | COM |
| CPS TECHNOLOGIES CORP | 74114 | 229012 | COM |
| CODA OCTOPUS GROUP INC | 23299 | 216681 | COM |
| DUOS TECHNOLOGIES GROUP INC | 19138 | 215303 | COM |
| ENERGY SVCS ACQUISITION CORP | 26088 | 213139 | COM |
| TESLA INC | 471 | 211818 | COM |
| SOUTHERN CO | 2391 | 208495 | COM |
| TRIO TECH INTL | 15737 | 208358 | COM |
| ARCHER DANIELS MIDLAND CO | 3620 | 208114 | COM |
| ABBOTT LABS | 1631 | 204348 | COM |
| INSPIREMD INC | 114085 | 203071 | COM |
| ASCENT INDUSTRIES CO | 12041 | 194944 | COM |
| ORACLE CORP | 1000 | 194910 | COM |
| NEPHROS INC | 38984 | 190242 | COM |
| GSI TECHNOLOGY INC | 30454 | 189119 | COM |
| RAPID MICRO BIOSYSTEMS INC | 62326 | 180745 | COM |
| AUTOMATIC DATA PROCESSING INC | 688 | 176974 | COM |
| FLEXIBLE SOLUTIONS INTL INC | 26252 | 176545 | COM |
| RICHARDSON ELECTRS LTD | 16092 | 175081 | COM |
| TRANSACT TECHNOLOGIES INC | 43333 | 173332 | COM |
| VINCE HLDG CORP | 40781 | 166386 | COM |
| GENASYS INC | 72907 | 156386 | COM |
| COSTCO WHSL CORP NEW | 180 | 155221 | COM |
| ALPHA PRO TECH LTD | 34375 | 152625 | COM |
| EXXON MOBIL CORP | 1245 | 149823 | COM |
| NEUROONE MED TECHNOLOGIES CORP | 188427 | 142828 | COM |
| RF INDS LTD | 24598 | 142176 | COM |
| MATSON INC | 1052 | 129975 | COM |
| APPLIED INDL TECHNOLOGIES INC | 505 | 129669 | COM |
| CHAMPIONS ONCOLOGY INC | 18249 | 126101 | COM |
| HARVARD BIOSCIENCE INC | 184678 | 123513 | COM |
| FUEL TECH INC | 77250 | 120510 | COM |
| MERCK & CO INC | 1132 | 119154 | COM |
| NOVA LTD | 359 | 117892 | COM |
| MONOLITHIC PWR SYS INC | 120 | 108763 | COM |
| WASTE MGMT INC DEL | 494 | 108537 | COM |
| ALPHABET INC | 320 | 100416 | COM |
| DTE ENERGY CO | 728 | 93897 | COM |
| CINCINNATI FINL CORP | 549 | 89663 | COM |
| NVENT ELECTRIC PLC | 842 | 85859 | COM |
| AWARE INC MASS | 43105 | 79744 | COM |
| AIRGAIN INC | 19398 | 78756 | COM |
| WABTEC | 362 | 77269 | COM |
| ROYAL GOLD INC | 338 | 75134 | COM |
| KINROSS GOLD CORP | 2661 | 74934 | COM |
| Q2 HLDGS INC | 974 | 70284 | COM |
| GLAUKOS CORP | 611 | 68988 | COM |
| LASER PHOTONICS CORP | 27361 | 67582 | COM |
| FREEPORT-MCMORAN INC | 1297 | 65875 | COM |
| PHILIP MORRIS INTL INC | 402 | 64481 | COM |
| MORGAN STANLEY | 363 | 64443 | COM |
| BRISTOL-MYERS SQUIBB CO | 1120 | 60413 | COM |
| AMKOR TECHNOLOGY INC | 1526 | 60246 | COM |
| SPDR S&P 500 ETF TR | 85 | 57963 | ETF |
| CLEARWATER ANALYTICS HLDGS INC | 2298 | 55428 | COM |
| AMNEAL PHARMACEUTICALS INC | 4295 | 54117 | COM |
| VIRTRA INC | 12856 | 53995 | COM |
| OCEAN PWR TECHNOLOGIES INC | 174614 | 52384 | COM |
| ISHARES SILVER TR | 771 | 49668 | ETF |
| FLOWSERVE CORP | 697 | 48358 | COM |
| SENESTECH INC | 22292 | 47705 | COM |
| ACUITY INC | 131 | 47165 | COM |
| RIO TINTO PLC | 567 | 45377 | ADR |
| WEC ENERGY GROUP INC | 430 | 45348 | COM |
| CLEAN HARBORS INC | 193 | 45255 | COM |
| MICRON TECHNOLOGY INC | 153 | 43668 | COM |
| DT MIDSTREAM INC | 364 | 43564 | COM |
| PPL CORP | 1238 | 43355 | COM |
| GATES INDL CORP PLC | 1996 | 42854 | COM |
| EXCELERATE ENERGY INC | 1475 | 41374 | COM |
| WILLIAMS COS INC | 680 | 40875 | COM |
| ENTERPRISE PRODS PARTNERS L P | 1266 | 40588 | COM |
| UNITED PARCEL SERVICE INC | 404 | 40073 | COM |
| DANA INC | 1665 | 39560 | COM |
| GENPACT LIMITED | 823 | 38500 | COM |
| RANGE RES CORP | 1091 | 38469 | COM |
| BERKSHIRE HATHAWAY INC DEL | 76 | 38201 | COM |
| ATMUS FILTRATION TECHNOLOGIES | 713 | 37012 | COM |
| ALKAMI TECHNOLOGY INC | 1567 | 36151 | COM |
| ARCOSA INC | 331 | 35192 | COM |
| SEMPRA | 390 | 34433 | COM |
| ITRON INC | 362 | 33615 | COM |
| VISA INC | 92 | 32265 | COM |
| QNITY ELECTRONICS INC | 357 | 29149 | COM |
| DUPONT DE NEMOURS INC | 715 | 28743 | COM |
| AVIENT CORPORATION | 915 | 28585 | COM |
| TERADYNE INC | 145 | 28066 | COM |
| EATON CORP PLC | 88 | 28029 | COM |
| REMITLY GLOBAL INC | 2016 | 27821 | COM |
| ROCKWELL AUTOMATION INC | 70 | 27235 | COM |
| FIVE BELOW INC | 137 | 25805 | COM |
| CONSTELLATION BRANDS INC | 178 | 24557 | COM |
| BP PLC | 662 | 22991 | ADR |
| AMPHENOL CORP NEW | 168 | 22704 | COM |
| TRIPADVISOR INC | 1523 | 22175 | COM |
| ECOLAB INC | 83 | 21789 | COM |
| HELMERICH & PAYNE INC | 733 | 21022 | COM |
| SLB LIMITED | 514 | 19727 | COM |
| IAC INC | 486 | 19003 | COM |
| VANECK ETF TRUST | 156 | 17750 | ETF |
| SANDOZ GROUP AG | 203 | 14773 | COM |
| REGAL REXNORD CORPORATION | 100 | 14032 | COM |
| FEDEX CORP | 45 | 12999 | COM |
| TRANE TECHNOLOGIES PLC | 33 | 12844 | COM |
| ANGI INC | 984 | 12723 | COM |
| SANOFI SA | 200 | 9692 | ADR |
| UNION PAC CORP | 35 | 8096 | COM |
| CONTEMPORARY AMPEREX TECHNO | 458 | 7383 | COM |
| WATTS WATER TECHNOLOGIES INC | 5 | 1380 | COM |
| LYONDELLBASELL INDUSTRIES N V | 25 | 1083 | COM |
| ORGANON & CO | 11 | 79 | COM |
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