Put-Call Ratio (Volume) (150-Day)

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

Biogen Inc. (BIIB) had 150-Day Put-Call Ratio (Volume) of 0.5233 for 2026-08-11.

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Figures for 2026-08-11

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3772
Historical Volatility (Parkinson)	0.3291
Implied Volatility (Calls)	0.3872
Implied Volatility (Puts)	0.3612
Implied Volatility (Mean)	0.3742
Put-Call Implied Volatility Ratio	0.9330
Implied Volatility Skew	0.0284
Option Statistics
Put-Call Ratio (Volume)	0.5233
Put-Call Ratio (Open Interest)	1.0965