Caption Management, LLC's ownership history for BIIB

Caption Management, LLC currently holds 53.0K shares with a market value of $9.3M. It started holding BIIB on 2024-09-30. At its peak, it held 53.0K shares on 2025-12-31. Its highest holding value was $9.3M on 2025-12-31. At its lowest, it held 1.8K shares on 2024-09-30, with a value of $345.0K on 2024-09-30. In the recent 180 days, Caption Management, LLC has increased its shares by 42.0K. In the recent year, Caption Management, LLC has increased its shares by 51.2K.

It has also owned 200 contracts of calls, with the market value of the underlying securities totaling $3.5M on 2025-09-30. At its peak, it held 950 contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $13.3M on 2025-09-30. At its lowest, it held 200 contracts of calls on 2025-12-31 and it owned calls with the market value of the underlying securities totaling $3.5M on 2025-12-31.

It has also owned 200 contracts of puts, with the market value of the underlying securities totaling $3.5M on 2024-09-30. At its peak, it held 200 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $3.5M on 2025-12-31. At its lowest, it held 180 contracts of puts on 2024-09-30 and it owned puts with the market value of the underlying securities totaling $2.8M on 2024-12-31. In the recent 180 days, Caption Management, LLC has increased its holdings by 20 contracts.