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) had 30-Day Put-Call Ratio (Volume) of 0.0000 for 2025-12-05.

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Figures for 2025-12-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1872
Historical Volatility (Parkinson)	0.1940
Implied Volatility (Calls)	0.2206
Implied Volatility (Puts)	0.2444
Implied Volatility (Mean)	0.2325
Put-Call Implied Volatility Ratio	1.1077
Implied Volatility Skew	0.0541
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.1065