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.

Biogen Inc. (BIIB) had 30-Day Put-Call Ratio (Volume) of 0.1533 for 2025-12-17.

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Figures for 2025-12-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2838
Historical Volatility (Parkinson)	0.3214
Implied Volatility (Calls)	0.3317
Implied Volatility (Puts)	0.3262
Implied Volatility (Mean)	0.3289
Put-Call Implied Volatility Ratio	0.9834
Implied Volatility Skew	0.0401
Option Statistics
Put-Call Ratio (Volume)	0.1533
Put-Call Ratio (Open Interest)	0.6904