GROUP ONE TRADING LLC's ownership history for TNDM

GROUP ONE TRADING LLC currently holds 60.7K shares with a market value of $1.3M. It started holding TNDM on 2024-09-30. At its peak, it held 84.8K shares on 2025-09-30. Its highest holding value was $1.3M on 2025-12-31. At its lowest, it held 1.6K shares on 2024-12-31, with a value of $57.2K on 2024-12-31. In the recent 180 days, GROUP ONE TRADING LLC has increased its shares by 4.8K. In the recent year, GROUP ONE TRADING LLC has increased its shares by 59.1K.