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 0.0572 for 2025-09-12.

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Figures for 2025-09-12

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3270
Historical Volatility (Parkinson)	0.3069
Implied Volatility (Calls)	0.3727
Implied Volatility (Puts)	0.3658
Implied Volatility (Mean)	0.3693
Put-Call Implied Volatility Ratio	0.9814
Implied Volatility Skew	0.0084
Option Statistics
Put-Call Ratio (Volume)	0.0572
Put-Call Ratio (Open Interest)	0.3116