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

Parallax Volatility Advisers, L.P. currently holds 1 shares with a market value of $180. It started holding EFX on 2025-09-30. At its peak, it held 8.0K shares on 2025-09-30. Its highest holding value was $2.1M on 2025-09-30. At its lowest, it held 1 shares on 2026-03-31, with a value of $180 on 2026-03-31.

It has also owned 17 contracts of calls, with the market value of the underlying securities totaling $327.1K on 2026-03-31. At its peak, it held 17 contracts of calls on 2026-03-31 and it owned calls with the market value of the underlying securities totaling $327.1K on 2026-03-31. At its lowest, it held 17 contracts of calls on 2026-03-31 and it owned calls with the market value of the underlying securities totaling $327.1K on 2026-03-31.

It has also owned 18 contracts of puts, with the market value of the underlying securities totaling $346.4K on 2025-09-30. At its peak, it held 224 contracts of puts on 2025-09-30 and it owned puts with the market value of the underlying securities totaling $5.7M on 2025-09-30. At its lowest, it held 18 contracts of puts on 2026-03-31 and it owned puts with the market value of the underlying securities totaling $346.4K on 2026-03-31.