ESSEX INVESTMENT MANAGEMENT CO LLC
CIK: 0000201772Latest portfolio: $655.9M · Q4 2025
Holdings
306
Total Value
$655.9M
New Positions
304
Closed Positions
0
Top Holdings
View All 306 Holdings →| # | Stock | Shares | Value | % Portfolio | Change | Type |
|---|---|---|---|---|---|---|
| 1 | TSEMTOWER SEMICONDUCTOR LTD | 192,628 | $22.6M | 3.45% | NEW | |
| 2 | KTOSKRATOS DEFENSE & SEC SOLUTIONS | 190,194 | $14.4M | 2.20% | NEW | |
| 3 | STRLSTERLING INFRASTRUCTURE INC | 44,685 | $13.7M | 2.09% | NEW | |
| 4 | HCIHCI GROUP INC | 59,209 | $11.3M | 1.73% | NEW | |
| 5 | LGNDLIGAND PHARMACEUTICALS INC | 60,020 | $11.3M | 1.73% | NEW | |
| 6 | IM8NINSMED INC | 62,423 | $10.9M | 1.66% | NEW | |
| 7 | KNSAKINIKSA PHARMACEUTICALS INTL P | 250,975 | $10.4M | 1.58% | NEW | |
| 8 | GSATGLOBALSTAR INC | 167,389 | $10.2M | 1.56% | NEW | |
| 9 | ADPTADAPTIVE BIOTECHNOLOGIES CORP | 624,217 | $10.1M | 1.55% | NEW | |
| 10 | AAPLAPPLE INC | 34,868 | $9.5M | 1.45% | NEW | |
| 11 | LINCLINCOLN EDL SVCS CORP | 388,819 | $9.4M | 1.43% | NEW | |
| 12 | CECOCECO ENVIRONMENTAL CORP | 154,457 | $9.2M | 1.41% | NEW | |
| 13 | GHMGRAHAM CORP | 140,691 | $9.0M | 1.38% | NEW | |
| 14 | MIRMMIRUM PHARMACEUTICALS INC | 111,310 | $8.8M | 1.34% | NEW | |
| 15 | DRSLEONARDO DRS INC | 256,862 | $8.8M | 1.33% | NEW | |
| 16 | AGXARGAN INC | 27,628 | $8.7M | 1.32% | NEW | |
| 17 | MSFTMICROSOFT CORP | 17,613 | $8.5M | 1.30% | NEW | |
| 18 | J2AWILLDAN GROUP INC | 76,921 | $8.0M | 1.22% | NEW | |
| 19 | GSGOLDMAN SACHS GROUP INC | 8,659 | $7.6M | 1.16% | NEW | |
| 20 | TTITETRA TECHNOLOGIES INC DEL | 760,393 | $7.1M | 1.09% | NEW | |
| 21 | MIRMIRION TECHNOLOGIES INC | 303,352 | $7.1M | 1.08% | NEW | |
| 22 | XZOEXZEO GROUP INC | 291,076 | $7.1M | 1.08% | NEW | |
| 23 | AVPTAVEPOINT INC | 508,014 | $7.1M | 1.08% | NEW | |
| 24 | AEMAGNICO EAGLE MINES LTD | 40,022 | $6.8M | 1.03% | NEW | |
| 25 | AMZNAMAZON COM INC | 28,833 | $6.7M | 1.01% | NEW |
Quarterly Changes
Sector Breakdown
Technology0.0% ($2.2618947985177058e+231T)
Industrials0.0% ($1.4437136839244904e+213T)
Healthcare0.0% ($1.1347103521013788e+144T)
Financial Services0.0% ($1.1349761170585996e+65T)
Energy0.0% ($7.124373526722096e+54T)
Unknown0.0% ($1.0864797340383592e+44T)
Basic Materials0.0% ($6.784127811718728e+40T)
Consumer Cyclical0.0% ($6.655498144363216e+26T)
Consumer Defensive0.0% ($9.389452739081352e+23T)
Communication Services0.0% ($102176248472229855232.0T)
Utilities0.0% ($562212177622482176.0T)
Filing History
Fund Information
ESSEX INVESTMENT MANAGEMENT CO LLC is an institutional investment manager that files 13F reports with the SEC. As of the Q4 2025 filing, the fund reported a portfolio valued at $655.9M across 306 holdings. The largest position is TOWER SEMICONDUCTOR LTD (TSEM), representing 3.4% of the portfolio. Compared to the previous quarter, the fund opened 306 new positions and closed 0 positions. 13F filings are required quarterly disclosures that provide transparency into the holdings of institutional investment managers with at least $100 million in qualifying assets.