Put-Call Ratio (Volume) (30-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Northwest Natural Gas Company (NWN) 30-Day Put-Call Ratio (Volume) data is not available for 2026-07-21.

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Figures for 2026-07-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2318
Historical Volatility (Parkinson)	0.2237
Implied Volatility (Calls)	0.3296
Implied Volatility (Puts)	0.2666
Implied Volatility (Mean)	0.2981
Put-Call Implied Volatility Ratio	0.8088
Implied Volatility Skew	-0.0247
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.3846