ESSEX INVESTMENT MANAGEMENT CO LLC's ownership history for AMSC

ESSEX INVESTMENT MANAGEMENT CO LLC currently holds 227.6K shares with a market value of $7.7M. It started holding AMSC on 2024-09-30. At its peak, it held 464.5K shares on 2024-09-30. Its highest holding value was $14.6M on 2025-09-30. At its lowest, it held 215.2K shares on 2025-12-31, with a value of $6.2M on 2025-12-31. In the recent 180 days, ESSEX INVESTMENT MANAGEMENT CO LLC has decreased its shares by 18.0K. In the recent year, ESSEX INVESTMENT MANAGEMENT CO LLC has decreased its shares by 144.7K.