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

Parallax Volatility Advisers, L.P. currently holds 97.2K shares with a market value of $16.7M. It started holding WDC on 2024-09-30. At its peak, it held 97.2K shares on 2025-12-31. Its highest holding value was $16.7M on 2025-12-31. 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 increased its shares by 12.2K. In the recent year, Parallax Volatility Advisers, L.P. has increased its shares by 37.4K.

It has also owned 2.3K contracts of calls, with the market value of the underlying securities totaling $39.9M 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 $39.9M on 2025-12-31. 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 400 contracts. In the recent year, Parallax Volatility Advisers, L.P. has decreased its holdings by 564 contracts.

It has also owned 372 contracts of puts, with the market value of the underlying securities totaling $6.4M 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 decreased its holdings by 1.3K contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 97.2K contracts.