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

Parallax Volatility Advisers, L.P. currently holds 7.4K shares with a market value of $8.7M. It started holding BLK on 2024-12-31. At its peak, it held 17.6K shares on 2024-12-31. Its highest holding value was $18.0M on 2024-12-31. At its lowest, it held 3.5K shares on 2025-03-31, with a value of $3.3M on 2025-03-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its shares by 10.1K.

It has also owned 2 contracts of calls, with the market value of the underlying securities totaling $233.2K on 2024-09-30. At its peak, it held 301 contracts of calls on 2024-09-30 and it owned calls with the market value of the underlying securities totaling $28.6M on 2024-09-30. 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 $233.2K on 2025-09-30. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its holdings by 4 contracts. In the recent year, Parallax Volatility Advisers, L.P. has decreased its holdings by 299 contracts.

It has also owned 8 contracts of puts, with the market value of the underlying securities totaling $932.7K on 2024-09-30. At its peak, it held 590 contracts of puts on 2025-06-30 and it owned puts with the market value of the underlying securities totaling $61.9M on 2025-06-30. At its lowest, it held 8 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $932.7K on 2025-09-30. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its holdings by 79 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 7.2K contracts.