Put-Call Ratio (Open Interest) (60-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Costco Wholesale Corporation (COST) had 60-Day Put-Call Ratio (Open Interest) of 1.2530 for 2025-10-16.

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Figures for 2025-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1946
Historical Volatility (Parkinson)	0.1508
Implied Volatility (Calls)	0.2546
Implied Volatility (Puts)	0.2509
Implied Volatility (Mean)	0.2528
Put-Call Implied Volatility Ratio	0.9851
Implied Volatility Skew	0.0263
Option Statistics
Put-Call Ratio (Volume)	0.9683
Put-Call Ratio (Open Interest)	1.2530