ESSEX INVESTMENT MANAGEMENT CO LLC's ownership history for AMPG

ESSEX INVESTMENT MANAGEMENT CO LLC currently holds 69.3K shares with a market value of $269.6K. It started holding AMPG on 2025-03-31. At its peak, it held 69.3K shares on 2025-06-30. Its highest holding value was $269.6K on 2025-09-30. At its lowest, it held 58.7K shares on 2025-03-31, with a value of $90.9K on 2025-03-31. In the recent 180 days, ESSEX INVESTMENT MANAGEMENT CO LLC has increased its shares by 10.7K.