Biogen Inc. (BIIB)

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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.