GROUP ONE TRADING LLC's ownership history for RBRK

GROUP ONE TRADING LLC currently holds 32.1K shares with a market value of $2.5M. It started holding RBRK on 2025-03-31. At its peak, it held 70.7K shares on 2025-09-30. Its highest holding value was $5.8M on 2025-09-30. At its lowest, it held 3.0K shares on 2025-03-31, with a value of $185.0K on 2025-03-31. In the recent 180 days, GROUP ONE TRADING LLC has increased its shares by 29.1K.