GROUP ONE TRADING LLC's ownership history for HL

GROUP ONE TRADING LLC currently holds 528.1K shares with a market value of $9.8M. It started holding HL on 2024-09-30. At its peak, it held 781.4K shares on 2025-12-31. Its highest holding value was $15.0M on 2025-12-31. At its lowest, it held 269.4K shares on 2025-03-31, with a value of $1.5M on 2025-03-31. In the recent 180 days, GROUP ONE TRADING LLC has decreased its shares by 21.8K. In the recent year, GROUP ONE TRADING LLC has increased its shares by 258.7K.