Put-Call Ratio (Volume) (60-Day)

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

Biogen Inc. (BIIB) had 60-Day Put-Call Ratio (Volume) of 0.3393 for 2026-09-14.

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Figures for 2026-09-14

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2888
Historical Volatility (Parkinson)	0.2846
Implied Volatility (Calls)	0.3756
Implied Volatility (Puts)	0.3654
Implied Volatility (Mean)	0.3705
Put-Call Implied Volatility Ratio	0.9728
Implied Volatility Skew	0.0335
Option Statistics
Put-Call Ratio (Volume)	0.3393
Put-Call Ratio (Open Interest)	0.8690