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.

Alnylam Pharmaceuticals, Inc. (ALNY) had 120-Day Put-Call Ratio (Volume) of 0.1728 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3526
Historical Volatility (Parkinson)	0.3523
Implied Volatility (Calls)	0.4526
Implied Volatility (Puts)	0.4475
Implied Volatility (Mean)	0.4500
Put-Call Implied Volatility Ratio	0.9888
Implied Volatility Skew	0.0320
Option Statistics
Put-Call Ratio (Volume)	0.1728
Put-Call Ratio (Open Interest)	1.1463