Biogen (BIIB) options traded 3,954 contracts on October 29, 2026 (2,344 calls and 1,610 puts, a put/call ratio of 0.69), compared with a 30-day average of 2,451. Options price a move of about ±2.2% by the nearest expiration.

Key numbers

30-day implied volatility (IV30): 33.1%
Implied move by the nearest expiration: ±2.2%
Option volume: 3,954 contracts (2,344 calls, 1,610 puts); 30-day average 2,451

Data as of October 29, 2026.

BIIB Option Breakdown

A breakdown of key statistics for each option expiration listed for BIIB. View implied volatility, volatility skew, volume, open interest, straddle premiums, and liquidity -- including bid/ask spread and NBBO bid/ask sizes. Includes links to the option chain, as well as numerous detailed charts.

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