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.

Costco Wholesale Corporation (COST) had 120-Day Put-Call Ratio (Volume) of 0.6037 for 2026-10-05.

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Figures for 2026-10-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1951
Historical Volatility (Parkinson)	0.1718
Implied Volatility (Calls)	0.2112
Implied Volatility (Puts)	0.2163
Implied Volatility (Mean)	0.2138
Put-Call Implied Volatility Ratio	1.0243
Implied Volatility Skew	0.0065
Option Statistics
Put-Call Ratio (Volume)	0.6037
Put-Call Ratio (Open Interest)	1.0069