MARSHALL WACE, LLP's ownership history for WDC

MARSHALL WACE, LLP currently holds 161.9K shares with a market value of $27.9M. It started holding WDC on 2024-09-30. At its peak, it held 496.3K shares on 2024-12-31. Its highest holding value was $38.7M on 2025-09-30. At its lowest, it held 33.8K shares on 2025-03-31, with a value of $1.4M on 2025-03-31. In the recent 180 days, MARSHALL WACE, LLP has increased its shares by 115.2K. In the recent year, MARSHALL WACE, LLP has decreased its shares by 334.5K.

It has also owned 268 contracts of calls, with the market value of the underlying securities totaling $4.6M on 2025-09-30. At its peak, it held 268 contracts of calls on 2025-12-31 and it owned calls with the market value of the underlying securities totaling $4.6M on 2025-12-31. At its lowest, it held 2 contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $24.0K on 2025-09-30.

It has also owned 426 contracts of puts, with the market value of the underlying securities totaling $7.3M on 2025-06-30. At its peak, it held 4.2K contracts of puts on 2025-06-30 and it owned puts with the market value of the underlying securities totaling $27.2M on 2025-06-30. At its lowest, it held 17 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $204.1K on 2025-09-30. In the recent 180 days, MARSHALL WACE, LLP has decreased its holdings by 3.8K contracts.