ESSEX INVESTMENT MANAGEMENT CO LLC's ownership history for AMPX

ESSEX INVESTMENT MANAGEMENT CO LLC currently holds 445.4K shares with a market value of $7.5M. It started holding AMPX on 2025-03-31. At its peak, it held 1.0M shares on 2025-06-30. Its highest holding value was $7.5M on 2026-03-31. At its lowest, it held 445.4K shares on 2026-03-31, with a value of $2.5M on 2025-03-31. In the recent 180 days, ESSEX INVESTMENT MANAGEMENT CO LLC has decreased its shares by 251.9K. In the recent year, ESSEX INVESTMENT MANAGEMENT CO LLC has decreased its shares by 490.4K.