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

Parallax Volatility Advisers, L.P. currently holds 37.0K shares with a market value of $4.4M. It started holding WDC on 2024-09-30. At its peak, it held 91.8K shares on 2025-03-31. Its highest holding value was $5.4M on 2025-06-30. At its lowest, it held 37.0K shares on 2025-09-30, with a value of $3.6M on 2024-12-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its shares by 54.7K. In the recent year, Parallax Volatility Advisers, L.P. has decreased its shares by 27.5K.

It has also owned 3.2K contracts of calls, with the market value of the underlying securities totaling $38.7M on 2024-09-30. At its peak, it held 3.2K contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $38.7M on 2025-09-30. At its lowest, it held 1.9K contracts of calls on 2025-06-30 and it owned calls with the market value of the underlying securities totaling $11.5M on 2025-03-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 380 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 293 contracts.

It has also owned 1.5K contracts of puts, with the market value of the underlying securities totaling $18.3M on 2024-09-30. At its peak, it held 1.7K contracts of puts on 2025-06-30 and it owned puts with the market value of the underlying securities totaling $18.3M on 2025-09-30. At its lowest, it held 5 contracts of puts on 2024-12-31 and it owned puts with the market value of the underlying securities totaling $29.8K on 2024-12-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 322 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 36.7K contracts.