Put-Call Ratio (Volume) (10-Day)

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

West Pharmaceutical Services, Inc. (WST) had 10-Day Put-Call Ratio (Volume) of 0.3995 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4346
Historical Volatility (Parkinson)	0.3709
Implied Volatility (Calls)	0.4655
Implied Volatility (Puts)	0.4578
Implied Volatility (Mean)	0.4616
Put-Call Implied Volatility Ratio	0.9834
Implied Volatility Skew	0.0522
Option Statistics
Put-Call Ratio (Volume)	0.3995
Put-Call Ratio (Open Interest)	0.5055