Put-Call Ratio (Open Interest) (120-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Biogen Inc. (BIIB) had 120-Day Put-Call Ratio (Open Interest) of 1.3155 for 2021-09-20.

10-Day 20-Day 30-Day 60-Day
90-Day 120-Day 150-Day 180-Day

Figures for 2021-09-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6524
Historical Volatility (Parkinson)	0.6031
Implied Volatility (Calls)	0.4356
Implied Volatility (Puts)	0.4283
Implied Volatility (Mean)	0.4320
Put-Call Implied Volatility Ratio	0.9832
Implied Volatility Skew	0.0299
Option Statistics
Put-Call Ratio (Volume)	0.3564
Put-Call Ratio (Open Interest)	1.3155
Forward Price	303.09
Call Breakeven Price	405.88
Put Breakeven Price	239.53
Option Breakeven Price	310.69

Data from Quantcha