ESSEX INVESTMENT MANAGEMENT CO LLC's ownership history for OPTT

ESSEX INVESTMENT MANAGEMENT CO LLC currently holds 205.2K shares with a market value of $71.8K. It started holding OPTT on 2025-09-30. At its peak, it held 205.2K shares on 2026-03-31. Its highest holding value was $103.3K on 2025-09-30. At its lowest, it held 174.6K shares on 2025-12-31, with a value of $52.4K on 2025-12-31. In the recent 180 days, ESSEX INVESTMENT MANAGEMENT CO LLC has increased its shares by 90.