Historical Volatility (Parkinson) (10-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 10-Day Historical Volatility (Parkinson) of 0.0455 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0495
Historical Volatility (Parkinson)	0.0455
Implied Volatility (Calls)	0.0776
Implied Volatility (Puts)	--
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.5556
Put-Call Ratio (Open Interest)	1.6837