Historical Volatility (Parkinson) (30-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 30-Day Historical Volatility (Parkinson) of 0.0467 for 2025-08-28.

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Figures for 2025-08-28

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0516
Historical Volatility (Parkinson)	0.0467
Implied Volatility (Calls)	--
Implied Volatility (Puts)	0.0646
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	2.7500