Cubist Systematic Strategies, LLC's ownership history for BIIB

Cubist Systematic Strategies, LLC currently holds 1.3K shares with a market value of $182.1K. It started holding BIIB on 2024-12-31. At its peak, it held 140.9K shares on 2025-03-31. Its highest holding value was $19.3M on 2025-03-31. At its lowest, it held 1.3K shares on 2025-09-30, with a value of $182.1K on 2025-09-30. In the recent 180 days, Cubist Systematic Strategies, LLC has decreased its shares by 139.6K.

It has also owned 210 contracts of calls, with the market value of the underlying securities totaling $2.9M on 2024-09-30. At its peak, it held 538 contracts of calls on 2025-03-31 and it owned calls with the market value of the underlying securities totaling $7.4M on 2025-03-31. At its lowest, it held 46 contracts of calls on 2024-09-30 and it owned calls with the market value of the underlying securities totaling $891.7K on 2024-09-30. In the recent 180 days, Cubist Systematic Strategies, LLC has decreased its holdings by 328 contracts. In the recent year, Cubist Systematic Strategies, LLC has increased its holdings by 164 contracts.

It has also owned 114 contracts of puts, with the market value of the underlying securities totaling $1.6M on 2024-09-30. At its peak, it held 215 contracts of puts on 2025-06-30 and it owned puts with the market value of the underlying securities totaling $2.7M on 2025-06-30. At its lowest, it held 13 contracts of puts on 2024-09-30 and it owned puts with the market value of the underlying securities totaling $252.0K on 2024-09-30. In the recent 180 days, Cubist Systematic Strategies, LLC has decreased its holdings by 54 contracts. In the recent year, Cubist Systematic Strategies, LLC has increased its holdings by 1.3K contracts.