GROUP ONE TRADING LLC's ownership history for UMAC

GROUP ONE TRADING LLC currently holds 137.9K shares with a market value of $2.1M. It started holding UMAC on 2025-06-30. At its peak, it held 137.9K shares on 2025-09-30. Its highest holding value was $2.1M on 2025-09-30. At its lowest, it held 20.0K shares on 2025-06-30, with a value of $171.2K on 2025-06-30.