Biogen (BIIB) Options Chain
NASDAQ: BIIBHealth CareBiotechnology: Biological Products (No Diagnostic Substances)USD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Pre-market: 234.89 +4.07%
Expiration date
- Expiration
- Nov 27, 2026
- Days to expiration
- 46
- Share price
- $225.71
- Put/call ratio (OI)
- 0.00
- Expected move
- ±$2.51
- Open interest (C / P)
- 6 / 0
BIIB options summary
The BIIB options chain for the November 27, 2026 expiration lists 2 call and 0 put contracts, with 46 days until expiration. Open interest stands at 6 calls and 0 puts, a put/call ratio of 0.00, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $235.00 strike is 3.1%, which implies the market expects a move of about ±$2.51 (1.1%) in Biogen stock by expiration.
Summary generated from market data by MetaCap's automated system. Methodology
BIIB options chain · November 27, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 9.30 | 0.00 | 0.00 | 235.00 | — | — | — | |||||
| 5.60 | 0.00 | 0.00 | 240.00 | — | — | — | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the BIIB put/call ratio?
For the November 27, 2026 expiration, the BIIB put/call ratio based on open interest is 0.00 (0 puts vs 6 calls). A ratio above 1 means more puts than calls.
What is BIIB's implied volatility?
At-the-money implied volatility for BIIB options expiring November 27, 2026 is about 3.1%, an annualized estimate of how much the market expects Biogen stock to move.
How many BIIB option expiration dates are there?
BIIB has 15 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.