Put-Call Ratio (Open Interest) (10-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.

BlackRock (BLK) had 10-Day Put-Call Ratio (Open Interest) of 1.7991 for 2025-08-08.

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Figures for 2025-08-08

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1936
Historical Volatility (Parkinson)	0.1652
Implied Volatility (Calls)	0.1968
Implied Volatility (Puts)	0.1992
Implied Volatility (Mean)	0.1980
Put-Call Implied Volatility Ratio	1.0123
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	2.4154
Put-Call Ratio (Open Interest)	1.7991