Genmab A/S (GMAB) Options Chain
NASDAQ: GMABHealth CareBiotechnology: Pharmaceutical PreparationsUSD
Market open · Delayed 15 min · as of Oct 9, 10:24 AM ET
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 7
- Share price
- $36.83
- Put/call ratio (OI)
- 1.11
- Put/call ratio (volume)
- 0.30
- Expected move
- ±$5.02
- Open interest (C / P)
- 3.80K / 4.21K
GMAB options summary
The GMAB options chain for the October 16, 2026 expiration lists 8 call and 3 put contracts, with 7 days until expiration. Open interest stands at 3,800 calls and 4,211 puts, a put/call ratio of 1.11, which is fairly balanced between calls and puts. At-the-money implied volatility near the $35.00 strike is 98.4%, which implies the market expects a move of about ±$5.02 (13.6%) in Genmab A/S stock by expiration.
The most open interest sits at the $35.00 call (1.92K contracts) and the $30.00 put (2.53K contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GMAB options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 21.30 | 17.40 | 21.40 | 17.50 | — | — | — | |||||
| 19.73 | — | — | 20.00 | — | — | — | |||||
| 16.70 | — | — | 22.50 | — | — | — | |||||
| 14.20 | — | — | 25.00 | — | — | — | |||||
| 5.50 | 5.00 | 8.90 | 30.00 | 0.00 | 1.00 | 0.50 | |||||
| 2.80 | 2.10 | 4.50 | 35.00 | 0.00 | 2.25 | 1.41 | |||||
| 0.55 | 0.50 | 0.65 | 40.00 | 1.95 | 5.60 | 4.85 | |||||
| 0.10 | — | — | 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 October 16, 2026 expiration, the GMAB put/call ratio based on open interest is 1.11 (4,211 puts vs 3,800 calls), and 0.30 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 October 16, 2026 is about 98.4%, 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.