Put-Call Ratio (Volume) (180-Day)

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

Biogen Inc. (BIIB) had 180-Day Put-Call Ratio (Volume) of 1.2679 for 2025-09-10.

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Figures for 2025-09-10

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3434
Historical Volatility (Parkinson)	0.3164
Implied Volatility (Calls)	0.3574
Implied Volatility (Puts)	0.3505
Implied Volatility (Mean)	0.3539
Put-Call Implied Volatility Ratio	0.9806
Implied Volatility Skew	0.0252
Option Statistics
Put-Call Ratio (Volume)	1.2679
Put-Call Ratio (Open Interest)	0.3722