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 15.4172 for 2026-03-20.

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Figures for 2026-03-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3358
Historical Volatility (Parkinson)	0.3203
Implied Volatility (Calls)	0.3801
Implied Volatility (Puts)	0.3721
Implied Volatility (Mean)	0.3761
Put-Call Implied Volatility Ratio	0.9789
Implied Volatility Skew	0.0353
Option Statistics
Put-Call Ratio (Volume)	15.4172
Put-Call Ratio (Open Interest)	0.9400