Put-Call Ratio (Volume) (90-Day)

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

Biogen Inc. (BIIB) had 90-Day Put-Call Ratio (Volume) of 0.1709 for 2025-10-13.

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Figures for 2025-10-13

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3604
Historical Volatility (Parkinson)	0.3105
Implied Volatility (Calls)	0.4331
Implied Volatility (Puts)	0.4095
Implied Volatility (Mean)	0.4213
Put-Call Implied Volatility Ratio	0.9456
Implied Volatility Skew	0.0258
Option Statistics
Put-Call Ratio (Volume)	0.1709
Put-Call Ratio (Open Interest)	0.5103