Put-Call Ratio (Volume) (180-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 180-Day Put-Call Ratio (Volume) of 0.0000 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3153
Historical Volatility (Parkinson)	0.2847
Implied Volatility (Calls)	0.3170
Implied Volatility (Puts)	0.3893
Implied Volatility (Mean)	0.3532
Put-Call Implied Volatility Ratio	1.2282
Implied Volatility Skew	0.0920
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.2311