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 0.8177 for 2025-09-15.

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Figures for 2025-09-15

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3138
Historical Volatility (Parkinson)	0.2954
Implied Volatility (Calls)	0.3641
Implied Volatility (Puts)	0.3633
Implied Volatility (Mean)	0.3637
Put-Call Implied Volatility Ratio	0.9978
Implied Volatility Skew	0.0239
Option Statistics
Put-Call Ratio (Volume)	0.8177
Put-Call Ratio (Open Interest)	0.4696