GROUP ONE TRADING LLC's ownership history for GTLB

GROUP ONE TRADING LLC currently holds 146.8K shares with a market value of $6.6M. It started holding GTLB on 2024-09-30. At its peak, it held 146.8K shares on 2025-09-30. Its highest holding value was $6.6M on 2025-09-30. At its lowest, it held 10.5K shares on 2025-03-31, with a value of $494.6K on 2025-03-31. In the recent 180 days, GROUP ONE TRADING LLC has increased its shares by 136.3K.