Zai Lab (ZLAB) Options Chain
NASDAQ: ZLABHealth CareBiotechnology: Pharmaceutical PreparationsUSD
Market open · Delayed 15 min · as of Oct 8, 1:17 PM ET
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 8
- Share price
- $24.28
- Put/call ratio (OI)
- 0.98
- Put/call ratio (volume)
- 0.95
- ATM implied volatility
- 151.5%
- Expected move
- ±$5.44
- Open interest (C / P)
- 122 / 119
ZLAB options summary
The ZLAB options chain for the October 16, 2026 expiration lists 4 call and 6 put contracts, with 8 days until expiration. Open interest stands at 122 calls and 119 puts, a put/call ratio of 0.98, which is fairly balanced between calls and puts. At-the-money implied volatility near the $25.00 strike is 151.5%, which implies the market expects a move of about ±$5.44 (22.4%) in Zai Lab stock by expiration.
The most open interest sits at the $22.50 call (39 contracts) and the $25.00 put (64 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
ZLAB options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 15.00 | 0.00 | 5.00 | 0.20 | |||||
| — | — | — | 17.50 | 0.00 | 5.00 | 2.43 | |||||
| 7.27 | 1.80 | 6.50 | 20.00 | 0.00 | 5.00 | 0.21 | |||||
| 4.00 | 0.10 | 5.00 | 22.50 | 0.00 | 3.00 | 2.58 | |||||
| 0.91 | 0.00 | 4.00 | 25.00 | 0.40 | 5.00 | 1.43 | |||||
| 0.20 | 0.00 | 1.00 | 30.00 | 3.50 | 8.20 | 4.70 | |||||
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 October 16, 2026 expiration, the ZLAB put/call ratio based on open interest is 0.98 (119 puts vs 122 calls), and 0.95 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 October 16, 2026 is about 151.5%, 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.