MARSHALL WACE, LLP's ownership history for BIIB

MARSHALL WACE, LLP currently holds 887.7K shares with a market value of $124.3M. 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 881.8K. In the recent year, MARSHALL WACE, LLP has increased its shares by 821.4K.

It has also owned 22 contracts of calls, with the market value of the underlying securities totaling $308.2K 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 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.

It has also owned 2 contracts of puts, with the market value of the underlying securities totaling $28.0K on 2025-09-30. At its peak, 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. 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.