Options Chain for ZAI LAB LTD ADR (ZLAB) - $20.38 as of 2/20/2026 4:11:36 PM EST
Calls
| Strike | Bid | Ask | Premium | Last Price | Change | %Chg | Premium to Strike Price Ratio | Volume | Open Interest | IV | Delta | Gamma | Theta | Last Trade | Last Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5.00 | 12.60 | 17.50 | 15.05 | % | 3.01 | 0 | 0 | 7.86 | 1.00 | 0.00 | 0.00 | 2/20/2026 3:59:55 PM EST | |||
| 7.50 | 10.10 | 15.00 | 12.55 | % | 1.67 | 0 | 0 | 5.52 | 1.00 | 0.00 | 0.00 | 2/20/2026 3:59:55 PM EST | |||
| 10.00 | 7.70 | 12.50 | 10.10 | % | 1.01 | 0 | 0 | 4.16 | 1.00 | 0.00 | 0.00 | 2/20/2026 3:59:55 PM EST | |||
| 12.50 | 5.10 | 10.00 | 7.55 | % | 0.60 | 0 | 0 | 3.19 | 0.99 | 0.01 | 0.00 | 2/20/2026 3:59:55 PM EST | |||
| 15.00 | 3.10 | 7.50 | 5.30 | % | 0.35 | 0 | 0 | 2.42 | 0.93 | 0.03 | -0.01 | 2/20/2026 3:59:55 PM EST | |||
| 17.50 | 0.70 | 5.50 | 3.10 | 3.25 | 0.00 | 0.00% | 0.18 | 0 | 15 | 2.02 | 0.77 | 0.07 | -0.03 | 2/17/2026 | 2/20/2026 3:59:55 PM EST |
| 20.00 | 1.60 | 2.20 | 1.90 | 2.04 | +0.54 | +36.00% | 0.10 | 10 | 295 | 0.84 | 0.55 | 0.10 | -0.03 | 2/20/2026 | 2/20/2026 3:59:55 PM EST |
| 22.50 | 0.75 | 1.20 | 0.98 | 0.85 | -0.05 | -5.56% | 0.04 | 2 | 220 | 0.83 | 0.32 | 0.09 | -0.03 | 2/20/2026 | 2/20/2026 3:59:55 PM EST |
| 25.00 | 0.35 | 0.45 | 0.40 | 0.30 | -0.25 | -45.46% | 0.02 | 8 | 203 | 0.79 | 0.15 | 0.06 | -0.02 | 2/20/2026 | 2/20/2026 3:59:55 PM EST |
| 30.00 | 0.00 | 0.30 | 0.15 | 0.40 | 0.00 | 0.00% | 0.01 | 0 | 64 | 1.08 | 0.02 | 0.01 | 0.00 | 1/9/2026 | 2/20/2026 3:59:55 PM EST |
| 35.00 | 0.00 | 0.15 | 0.08 | 0.10 | 0.00 | 0.00% | 0.00 | 0 | 342 | 1.18 | 0.00 | 0.00 | 0.00 | 2/10/2026 | 2/20/2026 3:59:55 PM EST |
| 40.00 | 0.00 | 0.20 | 0.10 | 0.10 | 0.00 | 0.00% | 0.00 | 0 | 24 | 1.46 | 0.00 | 0.00 | 0.00 | 2/19/2026 | 2/20/2026 3:59:55 PM EST |
| 45.00 | 0.00 | 1.50 | 0.75 | 0.05 | 0.00 | 0.00% | 0.02 | 0 | 27 | 2.69 | 0.00 | 0.00 | 0.00 | 2/18/2026 | 2/20/2026 3:59:55 PM EST |
| 50.00 | 0.00 | 5.00 | 2.50 | 0.15 | 0.00 | 0.00% | 0.05 | 0 | 17 | 4.62 | 0.00 | 0.00 | 0.00 | 12/31/2025 | 2/20/2026 3:59:55 PM EST |
Puts
| Strike | Bid | Ask | Premium | Last Price | Change | %Chg | Premium to Strike Price Ratio | Volume | Open Interest | IV | Delta | Gamma | Theta | Last Trade | Last Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5.00 | 0.00 | 5.00 | 2.50 | % | 0.50 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 2/20/2026 3:59:55 PM EST | |||
| 7.50 | 0.00 | 5.00 | 2.50 | % | 0.33 | 0 | 0 | 9.02 | 0.00 | 0.00 | 0.00 | 2/20/2026 3:59:55 PM EST | |||
| 10.00 | 0.00 | 5.00 | 2.50 | 0.20 | 0.00 | 0.00% | 0.25 | 0 | 1 | 6.55 | 0.00 | 0.00 | 0.00 | 12/15/2025 | 2/20/2026 3:59:55 PM EST |
| 12.50 | 0.00 | 5.00 | 2.50 | 0.50 | 0.00 | 0.00% | 0.20 | 0 | 1 | 5.05 | -0.01 | 0.01 | 0.00 | 12/12/2025 | 2/20/2026 3:59:55 PM EST |
| 15.00 | 0.00 | 1.90 | 0.95 | 1.69 | 0.00 | 0.00% | 0.06 | 0 | 120 | 2.07 | -0.07 | 0.03 | -0.01 | 12/17/2025 | 2/20/2026 3:59:55 PM EST |
| 17.50 | 0.20 | 0.70 | 0.45 | 1.45 | 0.00 | 0.00% | 0.03 | 0 | 16 | 0.65 | -0.23 | 0.07 | -0.03 | 12/12/2025 | 2/20/2026 3:59:55 PM EST |
| 20.00 | 0.00 | 5.00 | 2.50 | 1.70 | 0.00 | 0.00% | 0.12 | 0 | 93 | 2.32 | -0.45 | 0.10 | -0.03 | 2/17/2026 | 2/20/2026 3:59:55 PM EST |
| 22.50 | 2.60 | 3.40 | 3.00 | 5.50 | 0.00 | 0.00% | 0.13 | 0 | 146 | 0.61 | -0.68 | 0.09 | -0.03 | 1/29/2026 | 2/20/2026 3:59:55 PM EST |
| 25.00 | 4.00 | 8.00 | 6.00 | 5.50 | 0.00 | 0.00% | 0.24 | 0 | 30 | 2.11 | -0.85 | 0.06 | -0.02 | 2/13/2026 | 2/20/2026 3:59:55 PM EST |
| 30.00 | 9.80 | 10.20 | 10.00 | 11.40 | 0.00 | 0.00% | 0.33 | 0 | 148 | 1.12 | -0.98 | 0.01 | 0.00 | 2/9/2026 | 2/20/2026 3:59:55 PM EST |
| 35.00 | 12.60 | 17.50 | 15.05 | 14.74 | 0.00 | 0.00% | 0.43 | 0 | 12 | 2.73 | -1.00 | 0.00 | 0.00 | 11/19/2025 | 2/20/2026 3:59:55 PM EST |
| 40.00 | 17.60 | 22.50 | 20.05 | 20.00 | 0.00 | 0.00% | 0.50 | 0 | 2 | 3.03 | -1.00 | 0.00 | 0.00 | 11/18/2025 | 2/20/2026 3:59:55 PM EST |
| 45.00 | 22.60 | 27.50 | 25.05 | % | 0.56 | 0 | 0 | 3.28 | -1.00 | 0.00 | 0.00 | 2/20/2026 3:59:55 PM EST | |||
| 50.00 | 27.60 | 32.50 | 30.05 | 16.00 | 0.00 | 0.00% | 0.60 | 0 | 0 | 3.48 | -1.00 | 0.00 | 0.00 | 8/14/2025 | 2/20/2026 3:59:55 PM EST |