Put-Call Ratio (Volume) (120-Day)

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

Columbia Banking System, Inc. (COLB) had 120-Day Put-Call Ratio (Volume) of 0.0952 for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2539
Historical Volatility (Parkinson)	0.2200
Implied Volatility (Calls)	0.2600
Implied Volatility (Puts)	0.2879
Implied Volatility (Mean)	0.2740
Put-Call Implied Volatility Ratio	1.1073
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.0952
Put-Call Ratio (Open Interest)	0.2101