Put-Call Ratio (Open Interest) (150-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 150-Day Put-Call Ratio (Open Interest) of 1.0928 for 2025-10-16.

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Figures for 2025-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1816
Historical Volatility (Parkinson)	0.1566
Implied Volatility (Calls)	0.2536
Implied Volatility (Puts)	0.2474
Implied Volatility (Mean)	0.2505
Put-Call Implied Volatility Ratio	0.9758
Implied Volatility Skew	0.0228
Option Statistics
Put-Call Ratio (Volume)	0.5900
Put-Call Ratio (Open Interest)	1.0928