StockDriftsStockDriftsTop 50 Essex Investment Management CO LLC Holdings
| Stock | Company | % Port. | Shares | Value | Activity | Ownership | Avg. Cost | Date |
|---|---|---|---|---|---|---|---|---|
| TSEM | TOWER SEMICONDUCTOR LTD | 3.6% | 105.5K | $27.5M | -8.96%(-10.39K) | $33.89(+626.53%) | 2026-06-30 | |
| LINC | LINCOLN EDL SVCS CORP | 2.22% | 340.4K | $17.0M | -4.20%(-14.94K) | $6.16(+395.76%) | 2026-06-30 | |
| KNSA | KINIKSA PHARMACEUTICALS INTL P | 2.02% | 241.4K | $15.4M | -3.17%(-7.90K) | $19.95(+283.82%) | 2026-06-30 | |
| OUST | OUSTER INC | 1.85% | 226.0K | $14.1M | +22.45%(+41.44K) | $14.27(+217.20%) | 2026-06-30 | |
| LGND | LIGAND PHARMACEUTICALS INC | 1.8% | 43.6K | $13.8M | -25.48%(-14.89K) | $79.04(+276.79%) | 2026-06-30 | |
| CECO | CECO ENVIRONMENTAL CORP | 1.79% | 150.4K | $13.6M | -4.34%(-6.83K) | $9.90(+645.86%) | 2026-06-30 | |
| STRL | STERLING INFRASTRUCTURE INC | 1.78% | 16.2K | $13.6M | -49.61%(-15.90K) | $56.49(+860.26%) | 2026-06-30 | |
| AIP | ARTERIS INC | 1.77% | 277.7K | $13.5M | -4.36%(-12.65K) | $7.84(+253.64%) | 2026-06-30 | |
| MIRM | MIRUM PHARMACEUTICALS INC | 1.62% | 105.7K | $12.4M | -2.46%(-2.67K) | $48.53(+105.25%) | 2026-06-30 | |
| AGX | ARGAN INC | 1.62% | 15.5K | $12.4M | -3.92%(-631) | $55.09(+981.44%) | 2026-06-30 |
| Performance Metric | 3-Year Annualized | 3-Year Cumulative | 5-Year Annualized | 5-Year Cumulative |
|---|---|---|---|---|
| Top 20 Holdings Weighted | +42.37% | +188.57% | +18.81% | +136.74% |
| Top 20 Holdings Unweighted | +37.39% | +159.33% | +17.36% | +122.66% |
Essex Investment Management CO LLC reports $763.37M in US-listed equity holdings across 306 positions in its most recent 13F filing. Its largest disclosed positions are TSEM (3.6%), LINC (2.2%) and KNSA (2.0%). The top 20 holdings account for 33.1% of reported assets. Its disclosed equity book has returned +188.57% on a three-year cumulative basis. Figures reflect the Q2 2026 filing.
Portfolio changes
Every reported change this quarter, grouped by direction. The signal is in the rotation, not any single trade.
Sign up free to track Essex Investment Management CO LLC, compare funds side by side, and get alerts the moment positions change.
Holdings on this page are parsed from Essex Investment Management CO LLC’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 201772). View Essex Investment Management CO LLC’s 13F filings on SEC