Zai Lab (ZLAB) Options Chain
NASDAQ: ZLABHealth CareBiotechnology: Pharmaceutical PreparationsUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 68
- Share price
- $24.99
- Put/call ratio (OI)
- 6.80
- Put/call ratio (volume)
- 2.40
- Expected move
- ±$8.94
- Open interest (C / P)
- 570 / 3.87K
ZLAB options summary
The ZLAB options chain for the December 18, 2026 expiration lists 10 call and 10 put contracts, with 68 days until expiration. Open interest stands at 570 calls and 3,874 puts, a put/call ratio of 6.80, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $25.00 strike is 82.9%, which implies the market expects a move of about ±$8.94 (35.8%) in Zai Lab stock by expiration.
The most open interest sits at the $25.00 call (175 contracts) and the $17.50 put (2.16K contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ZLAB options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 5.00 | 0.00 | 0.00 | 0.20 | |||||
| — | — | — | 7.50 | 0.00 | 0.00 | 0.24 | |||||
| 9.00 | 5.50 | 10.00 | 10.00 | — | — | — | |||||
| 13.80 | 0.00 | 0.00 | 12.50 | 0.00 | 1.00 | 0.20 | |||||
| 4.45 | 0.00 | 0.00 | 15.00 | 0.00 | 2.95 | 0.25 | |||||
| 9.00 | 5.60 | 10.00 | 17.50 | 0.00 | 1.55 | 0.65 | |||||
| 6.60 | 4.40 | 8.00 | 20.00 | 0.00 | 5.00 | 1.10 | |||||
| 3.65 | 1.90 | 6.50 | 22.50 | 1.25 | 4.70 | 2.89 | |||||
| 3.17 | 2.00 | 4.50 | 25.00 | 0.10 | 3.90 | 3.16 | |||||
| 1.90 | 0.20 | 2.50 | 30.00 | 3.60 | 8.40 | 5.96 | |||||
| 1.35 | 0.35 | 4.00 | 35.00 | 8.00 | 12.60 | 9.30 | |||||
| 1.60 | 0.00 | 4.00 | 40.00 | — | — | — | |||||
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 ZLAB put/call ratio?
For the December 18, 2026 expiration, the ZLAB put/call ratio based on open interest is 6.80 (3,874 puts vs 570 calls), and 2.40 based on today's volume. A ratio above 1 means more puts than calls.
What is ZLAB's implied volatility?
At-the-money implied volatility for ZLAB options expiring December 18, 2026 is about 82.9%, an annualized estimate of how much the market expects Zai Lab stock to move.
How many ZLAB option expiration dates are there?
ZLAB has 6 listed expiration dates, from Oct 16, 2026 to Dec 17, 2027.
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.