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

Parallax Volatility Advisers, L.P. currently holds 11.8K shares with a market value of $1.9M. It started holding MPC on 2024-09-30. At its peak, it held 42.5K shares on 2025-06-30. Its highest holding value was $7.1M on 2025-06-30. At its lowest, it held 8 shares on 2024-12-31, with a value of $1.1K on 2024-12-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its shares by 30.7K. In the recent year, Parallax Volatility Advisers, L.P. has increased its shares by 11.8K.

It has also owned 266 contracts of calls, with the market value of the underlying securities totaling $4.3M on 2024-09-30. At its peak, it held 484 contracts of calls on 2024-12-31 and it owned calls with the market value of the underlying securities totaling $6.8M on 2024-12-31. At its lowest, it held 19 contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $366.2K on 2025-09-30. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 45 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 17 contracts.

It has also owned 203 contracts of puts, with the market value of the underlying securities totaling $3.3M on 2024-09-30. At its peak, it held 203 contracts of puts on 2025-12-31 and it owned puts with the market value of the underlying securities totaling $3.3M on 2025-12-31. At its lowest, it held 25 contracts of puts on 2024-09-30 and it owned puts with the market value of the underlying securities totaling $407.3K on 2024-09-30. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 69 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 11.8K contracts.