Put-Call Ratio (Open Interest) (20-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.

Cboe Global Markets, Inc. (CBOE) had 20-Day Put-Call Ratio (Open Interest) of 0.5818 for 2025-08-26.

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Figures for 2025-08-26

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2235
Historical Volatility (Parkinson)	0.1945
Implied Volatility (Calls)	0.1977
Implied Volatility (Puts)	0.1976
Implied Volatility (Mean)	0.1977
Put-Call Implied Volatility Ratio	0.9995
Implied Volatility Skew	0.0208
Option Statistics
Put-Call Ratio (Volume)	1.7413
Put-Call Ratio (Open Interest)	0.5818