Put-Call Ratio (Volume) (150-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Summit Therapeutics PLC (SMMT) had 150-Day Put-Call Ratio (Volume) of 0.8455 for 2026-04-21.

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Figures for 2026-04-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6649
Historical Volatility (Parkinson)	0.5648
Implied Volatility (Calls)	0.9933
Implied Volatility (Puts)	1.0159
Implied Volatility (Mean)	1.0046
Put-Call Implied Volatility Ratio	1.0228
Implied Volatility Skew	0.0325
Option Statistics
Put-Call Ratio (Volume)	0.8455
Put-Call Ratio (Open Interest)	0.4042