ESSEX INVESTMENT MANAGEMENT CO LLC Q2 2025 Filing
Filed August 12, 2025
Portfolio Value
$550.0B
Holdings
298
Report Date
Q2 2025
Filing Type
13F-HR
All Holdings (298 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | KTOSKRATOS DEFENSE & SEC SOLUTIONS | 350,352 | $16.3B | 2.96% | |
| 2 | AMSCAMERICAN SUPERCONDUCTOR CORP | 346,042 | $12.7B | 2.31% | |
| 3 | STRLSTERLING INFRASTRUCTURE INC | 53,121 | $12.3B | 2.23% | |
| 4 | DRSLEONARDO DRS INC | 254,042 | $11.8B | 2.15% | |
| 5 | AVPTAVEPOINT INC | 512,703 | $9.9B | 1.80% | |
| 6 | MSFTMICROSOFT CORP | 18,485 | $9.2B | 1.67% | |
| 7 | HCIHCI GROUP INC | 59,981 | $9.1B | 1.66% | |
| 8 | LINCLINCOLN EDL SVCS CORP | 384,552 | $8.9B | 1.61% | |
| 9 | TSEMTOWER SEMICONDUCTOR LTD | 195,296 | $8.5B | 1.54% | |
| 10 | GEVGE VERNOVA INC | 14,485 | $7.7B | 1.39% | |
| 11 | AAPLAPPLE INC | 36,647 | $7.5B | 1.37% | |
| 12 | ADPTADAPTIVE BIOTECHNOLOGIES CORP | 617,299 | $7.2B | 1.31% | |
| 13 | LGNDLIGAND PHARMACEUTICALS INC | 60,810 | $6.9B | 1.26% | |
| 14 | GHMGRAHAM CORP | 138,974 | $6.9B | 1.25% | |
| 15 | J2AWILLDAN GROUP INC | 107,227 | $6.7B | 1.22% | |
| 16 | IM8NINSMED INC | 66,345 | $6.7B | 1.21% | |
| 17 | AMZNAMAZON COM INC | 29,599 | $6.5B | 1.18% | |
| 18 | GSGOLDMAN SACHS GROUP INC | 9,149 | $6.5B | 1.18% | |
| 19 | MIRMIRION TECHNOLOGIES INC | 299,816 | $6.5B | 1.17% | |
| 20 | OUSTOUSTER INC | 250,172 | $6.1B | 1.10% | |
| 21 | AGXARGAN INC | 27,318 | $6.0B | 1.10% | |
| 22 | MIRMMIRUM PHARMACEUTICALS INC | 112,731 | $5.7B | 1.04% | |
| 23 | EVEREVERQUOTE INC | 234,677 | $5.7B | 1.03% | |
| 24 | AMBAAMBARELLA INC | 84,479 | $5.6B | 1.01% | |
| 25 | NEENEXTERA ENERGY INC | 79,535 | $5.5B | 1.00% | |
| 26 | GWREGUIDEWIRE SOFTWARE INC | 23,265 | $5.5B | 1.00% | |
| 27 | CRMSALESFORCE INC | 19,497 | $5.3B | 0.97% | |
| 28 | AEMAGNICO EAGLE MINES LTD | 41,294 | $4.9B | 0.89% | |
| 29 | UVEUNIVERSAL INS HLDGS INC | 175,408 | $4.9B | 0.88% | |
| 30 | KNSAKINIKSA PHARMACEUTICALS INTL P | 171,437 | $4.7B | 0.86% | |
| 31 | 2L9BLUEPRINT MEDICINES CORP | 36,291 | $4.7B | 0.85% | |
| 32 | LYTSLSI INDS INC OHIO | 266,221 | $4.5B | 0.82% | |
| 33 | PEGAPEGASYSTEMS INC | 81,973 | $4.4B | 0.81% | |
| 34 | CXDOCREXENDO INC | 721,828 | $4.4B | 0.80% | |
| 35 | PRIMPRIMORIS SVCS CORP | 55,869 | $4.4B | 0.79% | |
| 36 | CECOCECO ENVIRONMENTAL CORP | 152,743 | $4.3B | 0.79% | |
| 37 | AMPXAMPRIUS TECHNOLOGIES INC | 1,025,357 | $4.3B | 0.78% | |
| 38 | PATKPATRICK INDS INC | 46,055 | $4.2B | 0.77% | |
| 39 | BWXTBWX TECHNOLOGIES INC | 28,128 | $4.1B | 0.74% | |
| 40 | NUTXNUTEX HEALTH INC | 32,403 | $4.0B | 0.73% | |
| 41 | ZSZSCALER INC | 12,641 | $4.0B | 0.72% | |
| 42 | BWAYBRAINSWAY LTD | 300,940 | $4.0B | 0.72% | |
| 43 | SOYSUNOPTA INC | 681,702 | $4.0B | 0.72% | |
| 44 | CLPTCLEARPOINT NEURO INC | 325,378 | $3.9B | 0.71% | |
| 45 | SIBNSI-BONE INC | 206,408 | $3.9B | 0.71% | |
| 46 | OSPNONESPAN INC | 220,306 | $3.7B | 0.67% | |
| 47 | CONCONCENTRA GROUP HOLDINGS PAREN | 178,412 | $3.7B | 0.67% | |
| 48 | GLDDGREAT LAKES DREDGE & DOCK CORP | 298,682 | $3.6B | 0.66% | |
| 49 | 37MMRC GLOBAL INC | 264,799 | $3.6B | 0.66% | |
| 50 | THCTENET HEALTHCARE CORP | 20,234 | $3.6B | 0.65% | |
| 51 | OCULOCULAR THERAPEUTIX INC | 381,595 | $3.5B | 0.64% | |
| 52 | OLOGBXOLO INC | 387,672 | $3.5B | 0.63% | |
| 53 | DLTRDOLLAR TREE INC | 34,483 | $3.4B | 0.62% | |
| 54 | MASS908 DEVICES INC | 477,342 | $3.4B | 0.62% | |
| 55 | XERSXERIS BIOPHARMA HOLDINGS INC | 725,774 | $3.4B | 0.62% | |
| 56 | BGCBGC GROUP INC | 326,659 | $3.3B | 0.61% | |
| 57 | GFFGRIFFON CORP | 45,661 | $3.3B | 0.60% | |
| 58 | DISDISNEY WALT CO | 26,458 | $3.3B | 0.60% | |
| 59 | RJR1STEREOTAXIS INC | 1,544,756 | $3.3B | 0.60% | |
| 60 | TRNSTRANSCAT INC | 37,714 | $3.2B | 0.59% | |
| 61 | ASMLASML HOLDING N V | 4,027 | $3.2B | 0.59% | |
| 62 | PENGPENGUIN SOLUTIONS INC | 162,516 | $3.2B | 0.59% | |
| 63 | GMEDGLOBUS MED INC | 54,536 | $3.2B | 0.59% | |
| 64 | ARLOARLO TECHNOLOGIES INC | 186,716 | $3.2B | 0.58% | |
| 65 | CGNTCOGNYTE SOFTWARE LTD | 340,470 | $3.1B | 0.57% | |
| 66 | CVLGCOVENANT LOGISTICS GROUP INC | 129,895 | $3.1B | 0.57% | |
| 67 | IEXIDEX CORP | 17,831 | $3.1B | 0.57% | |
| 68 | RDCMRADCOM LTD | 225,719 | $3.1B | 0.56% | |
| 69 | PAYPAYMENTUS HOLDINGS INC | 91,983 | $3.0B | 0.55% | |
| 70 | INTUINTUIT | 3,814 | $3.0B | 0.55% | |
| 71 | RRCRANGE RES CORP | 72,868 | $3.0B | 0.54% | |
| 72 | NVRIENVIRI CORP | 340,846 | $3.0B | 0.54% | |
| 73 | RDVTRED VIOLET INC | 59,202 | $2.9B | 0.53% | |
| 74 | PHRPHREESIA INC | 101,230 | $2.9B | 0.52% | |
| 75 | EVREVERCORE INC | 10,561 | $2.9B | 0.52% | |
| 76 | MDWDMEDIWOUND LTD | 146,808 | $2.8B | 0.52% | |
| 77 | COHUCOHU INC | 146,733 | $2.8B | 0.51% | |
| 78 | MTRXMATRIX SVC CO | 205,496 | $2.8B | 0.50% | |
| 79 | MAMAMAMAS CREATIONS INC | 331,927 | $2.8B | 0.50% | |
| 80 | EXTREXTREME NETWORKS | 153,300 | $2.8B | 0.50% | |
| 81 | ORNORION GROUP HLDGS INC | 300,287 | $2.7B | 0.50% | |
| 82 | BKSYBLACKSKY TECHNOLOGY INC | 132,217 | $2.7B | 0.49% | |
| 83 | PTBPOTBELLY CORP | 220,446 | $2.7B | 0.49% | |
| 84 | AIPARTERIS INC | 282,003 | $2.7B | 0.49% | |
| 85 | ARQTARCUTIS BIOTHERAPEUTICS INC | 189,511 | $2.7B | 0.48% | |
| 86 | PAYXPAYCHEX INC | 17,886 | $2.6B | 0.47% | |
| 87 | 1GSNNOVANTA INC | 20,111 | $2.6B | 0.47% | |
| 88 | CRNTCERAGON NETWORKS LTD | 1,036,139 | $2.5B | 0.46% | |
| 89 | TTITETRA TECHNOLOGIES INC DEL | 751,809 | $2.5B | 0.46% | |
| 90 | ASPNASPEN AEROGELS INC | 426,528 | $2.5B | 0.46% | |
| 91 | KMDAKAMADA LTD | 323,832 | $2.5B | 0.46% | |
| 92 | BKRBAKER HUGHES COMPANY | 64,952 | $2.5B | 0.45% | |
| 93 | LQDTLIQUIDITY SVCS INC | 104,912 | $2.5B | 0.45% | |
| 94 | MEGMONTROSE ENVIRONMENTAL GROUP I | 108,414 | $2.4B | 0.43% | |
| 95 | LZLEGALZOOM COM INC | 264,801 | $2.4B | 0.43% | |
| 96 | ECGEVERUS CONSTR GROUP | 36,943 | $2.3B | 0.43% | |
| 97 | PRCTPROCEPT BIOROBOTICS CORP | 40,298 | $2.3B | 0.42% | |
| 98 | ANGOANGIODYNAMICS INC | 230,757 | $2.3B | 0.42% | |
| 99 | SMTCSEMTECH CORP | 49,140 | $2.2B | 0.40% | |
| 100 | CTMCASTELLUM INC | 2,090,500 | $2.2B | 0.40% |
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