Put-Call Ratio (Open Interest) (20-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

State Street SPDR S&P North American Natural Resources ETF (NANR) 20-Day Put-Call Ratio (Open Interest) data is not available for 2026-04-21.

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Volatility Metrics
Historical Volatility (Close-to-Close)	0.1093
Historical Volatility (Parkinson)	0.1035
Implied Volatility (Calls)	0.2693
Implied Volatility (Puts)	0.2055
Implied Volatility (Mean)	0.2374
Put-Call Implied Volatility Ratio	0.7632
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--