MARSHALL WACE, LLP's ownership history for MRK

MARSHALL WACE, LLP currently holds 883.9K shares with a market value of $74.2M. It started holding MRK on 2024-09-30. At its peak, it held 3.1M shares on 2025-06-30. Its highest holding value was $248.9M on 2025-06-30. At its lowest, it held 331 shares on 2024-12-31, with a value of $32.9K on 2024-12-31. In the recent 180 days, MARSHALL WACE, LLP has increased its shares by 876.3K. In the recent year, MARSHALL WACE, LLP has increased its shares by 880.5K.

It has also owned 5.2K contracts of puts, with the market value of the underlying securities totaling $43.5M on 2024-12-31. At its peak, it held 5.2K contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $43.5M on 2025-09-30. At its lowest, it held 1.4K contracts of puts on 2024-12-31 and it owned puts with the market value of the underlying securities totaling $13.3M on 2025-06-30. In the recent 180 days, MARSHALL WACE, LLP has increased its holdings by 3.8K contracts.