Put-Call Ratio (Volume) (90-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) 90-Day Put-Call Ratio (Volume) data is not available for 2025-07-18.

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Figures for 2025-07-18

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2021
Historical Volatility (Parkinson)	0.1850
Implied Volatility (Calls)	0.2045
Implied Volatility (Puts)	0.2366
Implied Volatility (Mean)	0.2205
Put-Call Implied Volatility Ratio	1.1573
Implied Volatility Skew	0.1056
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.1821