MARSHALL WACE, LLP's ownership history for WDC

MARSHALL WACE, LLP currently holds 322.4K shares with a market value of $38.7M. 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 288.6K. In the recent year, MARSHALL WACE, LLP has increased its shares by 33.5K.

It has also owned 2 contracts of calls, with the market value of the underlying securities totaling $24.0K on 2025-09-30. At its peak, 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. 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 17 contracts of puts, with the market value of the underlying securities totaling $204.1K 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.