GROUP ONE TRADING LLC's ownership history for ATAI

GROUP ONE TRADING LLC currently holds 321.3K shares with a market value of $1.3M. It started holding ATAI on 2024-09-30. At its peak, it held 600.5K shares on 2025-09-30. Its highest holding value was $3.2M on 2025-09-30. At its lowest, it held 2.0K shares on 2024-09-30, with a value of $2.3K on 2024-09-30. In the recent 180 days, GROUP ONE TRADING LLC has increased its shares by 283.5K. In the recent year, GROUP ONE TRADING LLC has increased its shares by 250.5K.