Put-Call Ratio (Volume) (120-Day)

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

Biogen Inc. (BIIB) had 120-Day Put-Call Ratio (Volume) of 1.2636 for 2026-06-22.

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Figures for 2026-06-22

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3281
Historical Volatility (Parkinson)	0.2979
Implied Volatility (Calls)	0.3535
Implied Volatility (Puts)	0.3660
Implied Volatility (Mean)	0.3598
Put-Call Implied Volatility Ratio	1.0352
Implied Volatility Skew	0.0179
Option Statistics
Put-Call Ratio (Volume)	1.2636
Put-Call Ratio (Open Interest)	0.3567