ESSEX INVESTMENT MANAGEMENT CO LLC is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q1 2026, the fund manages $632M in reported equity holdings across 305 positions. The largest holdings are TSEM (3.2%), LINC (2.3%), STRL (2.1%), KNSA (1.9%), LGND (1.8%). The portfolio is concentrated in Other (83.1%), Technology (6.7%), Industrials (5.5%). Data sourced from SEC EDGAR 13F filings (CIK 201772).