Historical Volatility (Parkinson) (90-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.

FlexShares STOXX Global Broad Infrastructure ETF (NFRA) had 90-Day Historical Volatility (Parkinson) of 0.0664 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0882
Historical Volatility (Parkinson)	0.0664
Implied Volatility (Calls)	0.1886
Implied Volatility (Puts)	0.2072
Implied Volatility (Mean)	0.1979
Put-Call Implied Volatility Ratio	1.0990
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--