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 27.8449 for 2026-04-06.

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Figures for 2026-04-06

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2717
Historical Volatility (Parkinson)	0.2552
Implied Volatility (Calls)	0.3756
Implied Volatility (Puts)	0.3709
Implied Volatility (Mean)	0.3733
Put-Call Implied Volatility Ratio	0.9875
Implied Volatility Skew	0.1036
Option Statistics
Put-Call Ratio (Volume)	0.2857
Put-Call Ratio (Open Interest)	27.8449