GROUP ONE TRADING LLC's ownership history for BRK.B

GROUP ONE TRADING LLC currently holds 14.6K shares with a market value of $7.3M. It started holding BRK.B on 2025-06-30. At its peak, it held 14.6K shares on 2025-09-30. Its highest holding value was $7.3M on 2025-09-30. At its lowest, it held 12.6K shares on 2025-06-30, with a value of $6.1M on 2025-06-30.