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.

GSK PLC Sponsored ADR (GSK) had 20-Day Put-Call Ratio (Open Interest) of 0.5482 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2665
Historical Volatility (Parkinson)	0.1794
Implied Volatility (Calls)	0.3805
Implied Volatility (Puts)	0.3365
Implied Volatility (Mean)	0.3585
Put-Call Implied Volatility Ratio	0.8845
Implied Volatility Skew	0.1581
Option Statistics
Put-Call Ratio (Volume)	3.2500
Put-Call Ratio (Open Interest)	0.5482