Put-Call Ratio (Open Interest) (30-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 30-Day Put-Call Ratio (Open Interest) of 1.0979 for 2025-11-11.

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Figures for 2025-11-11

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2313
Historical Volatility (Parkinson)	0.2299
Implied Volatility (Calls)	0.2431
Implied Volatility (Puts)	0.2455
Implied Volatility (Mean)	0.2443
Put-Call Implied Volatility Ratio	1.0098
Implied Volatility Skew	0.0691
Option Statistics
Put-Call Ratio (Volume)	10.9524
Put-Call Ratio (Open Interest)	1.0979