Put-Call Ratio (Volume) (30-Day)

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

Biogen Inc. (BIIB) had 30-Day Put-Call Ratio (Volume) of 0.4334 for 2025-08-26.

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Figures for 2025-08-26

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3033
Historical Volatility (Parkinson)	0.3113
Implied Volatility (Calls)	0.3039
Implied Volatility (Puts)	0.3176
Implied Volatility (Mean)	0.3108
Put-Call Implied Volatility Ratio	1.0450
Implied Volatility Skew	0.0439
Option Statistics
Put-Call Ratio (Volume)	0.4334
Put-Call Ratio (Open Interest)	0.5769