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

Parallax Volatility Advisers, L.P. currently holds 99.2K shares with a market value of $6.8M. It started holding IBKR on 2025-03-31. At its peak, it held 99.2K shares on 2025-09-30. Its highest holding value was $6.8M on 2025-09-30. At its lowest, it held 1.8K shares on 2025-03-31, with a value of $298.4K on 2025-03-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its shares by 97.4K.

It has also owned 280 contracts of calls, with the market value of the underlying securities totaling $1.9M on 2024-09-30. At its peak, it held 696 contracts of calls on 2025-06-30 and it owned calls with the market value of the underlying securities totaling $3.9M on 2025-06-30. At its lowest, it held 51 contracts of calls on 2024-09-30 and it owned calls with the market value of the underlying securities totaling $710.7K on 2024-09-30. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 168 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 229 contracts.

It has also owned 520 contracts of puts, with the market value of the underlying securities totaling $2.9M on 2024-12-31. At its peak, it held 520 contracts of puts on 2025-06-30 and it owned puts with the market value of the underlying securities totaling $2.9M on 2025-06-30. At its lowest, it held 68 contracts of puts on 2024-12-31 and it owned puts with the market value of the underlying securities totaling $1.2M on 2024-12-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 452 contracts.