MARSHALL WACE, LLP's ownership history for WDC

MARSHALL WACE, LLP currently holds 931.3K shares with a market value of $251.9M. It started holding WDC on 2024-09-30. At its peak, it held 931.3K shares on 2026-03-31. Its highest holding value was $251.9M on 2026-03-31. 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 608.9K. In the recent year, MARSHALL WACE, LLP has increased its shares by 897.5K.

It has also owned 219 contracts of calls, with the market value of the underlying securities totaling $5.9M 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 $5.9M on 2026-03-31. 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. In the recent 180 days, MARSHALL WACE, LLP has increased its holdings by 217 contracts.

It has also owned 158 contracts of puts, with the market value of the underlying securities totaling $4.3M 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 increased its holdings by 141 contracts.