Historical Volatility (Parkinson) (120-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.

iShares Preferred and Income Securities ETF (PFF) had 120-Day Historical Volatility (Parkinson) of 0.0575 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0666
Historical Volatility (Parkinson)	0.0575
Implied Volatility (Calls)	0.0630
Implied Volatility (Puts)	--
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.1020
Put-Call Ratio (Open Interest)	1.1543