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

Parallax Volatility Advisers, L.P. currently holds 2.5K shares with a market value of $20.0K. It started holding UMC on 2024-09-30. At its peak, it held 128.5K shares on 2024-12-31. Its highest holding value was $833.7K on 2024-12-31. At its lowest, it held 2.5K shares on 2025-12-31, with a value of $20.0K on 2025-12-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its shares by 3.6K. In the recent year, Parallax Volatility Advisers, L.P. has decreased its shares by 125.9K.

It has also owned 200 contracts of puts, with the market value of the underlying securities totaling $157.2K on 2024-09-30. At its peak, it held 1.5K contracts of puts on 2024-09-30 and it owned puts with the market value of the underlying securities totaling $1.2M on 2024-09-30. At its lowest, it held 200 contracts of puts on 2025-03-31 and it owned puts with the market value of the underlying securities totaling $143.0K on 2025-03-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 0 contracts. In the recent year, Parallax Volatility Advisers, L.P. has increased its holdings by 1.1K contracts.