Put-Call Ratio (Volume) (30-Day)

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

Alnylam Pharmaceuticals, Inc. (ALNY) had 30-Day Put-Call Ratio (Volume) of 0.8674 for 2026-10-19.

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Figures for 2026-10-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4267
Historical Volatility (Parkinson)	0.3822
Implied Volatility (Calls)	0.6075
Implied Volatility (Puts)	0.6004
Implied Volatility (Mean)	0.6040
Put-Call Implied Volatility Ratio	0.9884
Implied Volatility Skew	0.0426
Option Statistics
Put-Call Ratio (Volume)	0.8674
Put-Call Ratio (Open Interest)	0.4951