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.

Costco Wholesale Corporation (COST) had 90-Day Put-Call Ratio (Volume) of 2.2640 for 2025-12-18.

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Figures for 2025-12-18

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1832
Historical Volatility (Parkinson)	0.1627
Implied Volatility (Calls)	0.2261
Implied Volatility (Puts)	0.2153
Implied Volatility (Mean)	0.2207
Put-Call Implied Volatility Ratio	0.9522
Implied Volatility Skew	0.0167
Option Statistics
Put-Call Ratio (Volume)	2.2640
Put-Call Ratio (Open Interest)	0.7551