MARSHALL WACE, LLP's ownership history for BIIB

MARSHALL WACE, LLP currently holds 385.9K shares with a market value of $67.9M. It started holding BIIB on 2024-09-30. At its peak, it held 887.7K shares on 2025-09-30. Its highest holding value was $124.3M on 2025-09-30. At its lowest, it held 5.9K shares on 2025-03-31, with a value of $807.4K on 2025-03-31. In the recent 180 days, MARSHALL WACE, LLP has increased its shares by 220.0K. In the recent year, MARSHALL WACE, LLP has increased its shares by 306.0K.

It has also owned 2 contracts of calls, with the market value of the underlying securities totaling $35.2K on 2025-09-30. At its peak, it held 22 contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $308.2K on 2025-09-30. At its lowest, it held 2 contracts of calls on 2025-12-31 and it owned calls with the market value of the underlying securities totaling $35.2K on 2025-12-31.

It has also owned 8 contracts of puts, with the market value of the underlying securities totaling $140.8K on 2025-09-30. At its peak, it held 8 contracts of puts on 2025-12-31 and it owned puts with the market value of the underlying securities totaling $140.8K on 2025-12-31. At its lowest, it held 2 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $28.0K on 2025-09-30.