Put-Call Ratio (Volume) (120-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 120-Day Put-Call Ratio (Volume) of 3.8164 for 2026-04-16.

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Figures for 2026-04-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3336
Historical Volatility (Parkinson)	0.3377
Implied Volatility (Calls)	0.4182
Implied Volatility (Puts)	0.4236
Implied Volatility (Mean)	0.4209
Put-Call Implied Volatility Ratio	1.0128
Implied Volatility Skew	0.0291
Option Statistics
Put-Call Ratio (Volume)	3.8164
Put-Call Ratio (Open Interest)	0.5475