ESSEX INVESTMENT MANAGEMENT CO LLC's ownership history for ROK

ESSEX INVESTMENT MANAGEMENT CO LLC currently holds 70 shares with a market value of $24.5K. It started holding ROK on 2024-09-30. At its peak, it held 70 shares on 2024-09-30. Its highest holding value was $24.5K on 2025-09-30. At its lowest, it held 70 shares on 2024-09-30, with a value of $18.1K on 2025-03-31. In the recent 180 days, ESSEX INVESTMENT MANAGEMENT CO LLC has increased its shares by 0. In the recent year, ESSEX INVESTMENT MANAGEMENT CO LLC has increased its shares by 0.