SIMPLEX TRADING, LLC's ownership history for BIIB

SIMPLEX TRADING, LLC currently holds 30.9K shares with a market value of $5.4M. It started holding BIIB on 2024-09-30. At its peak, it held 53.1K shares on 2024-09-30. Its highest holding value was $5.4M on 2025-12-31. At its lowest, it held 1.1K shares on 2025-09-30, with a value of $156 on 2025-09-30. In the recent 180 days, SIMPLEX TRADING, LLC has increased its shares by 24.3K. In the recent year, SIMPLEX TRADING, LLC has decreased its shares by 2.7K.