Genmab A/S (GMAB) Options Chain
NASDAQ: GMABHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $37.07
- Put/call ratio (OI)
- 0.59
- Put/call ratio (volume)
- 0.07
- Expected move
- ±$8.28
- Open interest (C / P)
- 5.56K / 3.31K
GMAB options summary
The GMAB options chain for the November 20, 2026 expiration lists 10 call and 8 put contracts, with 40 days until expiration. Open interest stands at 5,559 calls and 3,305 puts, a put/call ratio of 0.59, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $35.00 strike is 67.5%, which implies the market expects a move of about ±$8.28 (22.3%) in Genmab A/S stock by expiration.
The most open interest sits at the $35.00 call (2.37K contracts) and the $25.00 put (1.64K contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GMAB options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 26.20 | — | — | 12.50 | — | — | — | |||||
| 23.70 | — | — | 15.00 | 0.00 | 0.00 | 0.60 | |||||
| 11.33 | 14.00 | 18.10 | 17.50 | 0.00 | 2.15 | 0.03 | |||||
| 18.80 | 15.10 | 19.10 | 20.00 | 0.00 | 2.40 | 0.95 | |||||
| 15.14 | 12.60 | 16.50 | 22.50 | 0.00 | 0.00 | 0.80 | |||||
| 14.20 | 10.10 | 14.10 | 25.00 | 0.00 | 1.10 | 0.05 | |||||
| 5.70 | 5.80 | 9.50 | 30.00 | 0.00 | 1.35 | 1.35 | |||||
| 3.28 | 3.20 | 6.30 | 35.00 | 1.20 | 2.55 | 2.15 | |||||
| 1.83 | 0.90 | 2.40 | 40.00 | — | — | 4.36 | |||||
| 1.00 | 0.30 | 1.75 | 45.00 | — | — | — | |||||
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 GMAB put/call ratio?
For the November 20, 2026 expiration, the GMAB put/call ratio based on open interest is 0.59 (3,305 puts vs 5,559 calls), and 0.07 based on today's volume. A ratio above 1 means more puts than calls.
What is GMAB's implied volatility?
At-the-money implied volatility for GMAB options expiring November 20, 2026 is about 67.5%, an annualized estimate of how much the market expects Genmab A/S stock to move.
How many GMAB option expiration dates are there?
GMAB has 8 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.