Parallax Volatility Advisers, L.P.'s ownership history for MRK

Parallax Volatility Advisers, L.P. currently holds 12.3K shares with a market value of $975.0K. It started holding MRK on 2024-12-31. At its peak, it held 12.3K shares on 2025-06-30. Its highest holding value was $975.0K on 2025-06-30. At its lowest, it held 8.5K shares on 2024-12-31, with a value of $847.3K on 2024-12-31.

It has also owned 3.3K contracts of calls, with the market value of the underlying securities totaling $27.3M on 2024-09-30. At its peak, it held 8.4K contracts of calls on 2024-09-30 and it owned calls with the market value of the underlying securities totaling $95.7M on 2024-09-30. At its lowest, it held 546 contracts of calls on 2024-12-31 and it owned calls with the market value of the underlying securities totaling $5.4M on 2024-12-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 101 contracts. In the recent year, Parallax Volatility Advisers, L.P. has decreased its holdings by 5.2K contracts.

It has also owned 200 contracts of puts, with the market value of the underlying securities totaling $1.7M on 2024-09-30. At its peak, it held 4.2K contracts of puts on 2024-12-31 and it owned puts with the market value of the underlying securities totaling $41.4M on 2024-12-31. At its lowest, it held 200 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $1.7M on 2025-09-30. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its holdings by 1 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 10.4K contracts.