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

Parallax Volatility Advisers, L.P. currently holds 9.4K shares with a market value of $2.1M. It started holding DHR on 2024-12-31. At its peak, it held 9.4K shares on 2025-12-31. Its highest holding value was $2.1M on 2025-12-31. At its lowest, it held 2 shares on 2025-03-31, with a value of $410 on 2025-03-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its shares by 7.8K.

It has also owned 5 contracts of calls, with the market value of the underlying securities totaling $114.5K on 2024-09-30. At its peak, it held 2.3K contracts of calls on 2024-09-30 and it owned calls with the market value of the underlying securities totaling $62.9M on 2024-09-30. At its lowest, it held 5 contracts of calls on 2025-12-31 and it owned calls with the market value of the underlying securities totaling $114.5K on 2025-12-31. In the recent 180 days, Parallax Volatility Advisers, L.P. has decreased its holdings by 95 contracts. In the recent year, Parallax Volatility Advisers, L.P. has decreased its holdings by 2.3K contracts.

It has also owned 229 contracts of puts, with the market value of the underlying securities totaling $5.2M on 2024-09-30. At its peak, it held 229 contracts of puts on 2025-12-31 and it owned puts with the market value of the underlying securities totaling $5.2M on 2025-12-31. At its lowest, it held 9 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $178.4K on 2025-09-30. In the recent 180 days, Parallax Volatility Advisers, L.P. has increased its holdings by 94 contracts.