Historical Volatility (Parkinson) (20-Day)
Historical Volatility (Parkinson): The past volatility of the security over the selected time frame, calculated using the high and low prices on each trading day.
UBS ETRACS Monthly Pay 2xLeveraged Preferred Stock ETN (PFFL) had 20-Day Historical Volatility (Parkinson) of 0.1206 for 2026-01-20.
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