Options Chain for PROTHENA CORP PLC SHS (PRTA) - $8.77 as of 8/22/2025 8:32:06 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.50 | 5.70 | 8.60 | 7.15 | 3.90 | 0.00 | 0.00% | 2.86 | 0 | 2 | 0.00 | 1.00 | 0.00 | 0.00 | 7/16/2025 | 8/22/2025 3:59:49 PM EST |
| 5.00 | 2.55 | 3.90 | 3.23 | 3.20 | 0.00 | 0.00% | 0.65 | 0 | 342 | 1.83 | 1.00 | 0.00 | 0.00 | 8/13/2025 | 8/22/2025 3:59:49 PM EST |
| 7.50 | 1.55 | 1.75 | 1.65 | 1.32 | 0.00 | 0.00% | 0.22 | 0 | 2,237 | 0.99 | 0.77 | 0.14 | -0.01 | 8/21/2025 | 8/22/2025 3:59:49 PM EST |
| 10.00 | 0.40 | 0.55 | 0.48 | 0.50 | +0.10 | +25.00% | 0.05 | 10 | 3,483 | 0.95 | 0.34 | 0.16 | -0.01 | 8/22/2025 | 8/22/2025 3:59:49 PM EST |
| 12.50 | 0.10 | 0.20 | 0.15 | 0.20 | +0.05 | +33.34% | 0.01 | 101 | 666 | 1.03 | 0.10 | 0.08 | -0.01 | 8/22/2025 | 8/22/2025 3:59:49 PM EST |
| 15.00 | 0.00 | 0.45 | 0.23 | 0.10 | 0.00 | 0.00% | 0.02 | 0 | 169 | 1.87 | 0.02 | 0.03 | 0.00 | 8/15/2025 | 8/22/2025 3:59:49 PM EST |
| 17.50 | 0.00 | 0.25 | 0.13 | 0.10 | 0.00 | 0.00% | 0.01 | 0 | 2,021 | 1.85 | 0.00 | 0.01 | 0.00 | 8/19/2025 | 8/22/2025 3:59:49 PM EST |
| 20.00 | 0.00 | 0.15 | 0.08 | 0.05 | 0.00 | 0.00% | 0.00 | 0 | 122 | 1.85 | 0.00 | 0.00 | 0.00 | 8/6/2025 | 8/22/2025 3:59:49 PM EST |
| 22.50 | 0.00 | 0.15 | 0.08 | 0.12 | 0.00 | 0.00% | 0.00 | 0 | 628 | 2.04 | 0.00 | 0.00 | 0.00 | 6/23/2025 | 8/22/2025 3:59:49 PM EST |
| 25.00 | 0.00 | 0.15 | 0.08 | 0.05 | 0.00 | 0.00% | 0.00 | 0 | 1,092 | 2.20 | 0.00 | 0.00 | 0.00 | 7/15/2025 | 8/22/2025 3:59:49 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.50 | 0.00 | 0.10 | 0.05 | 0.05 | 0.00 | 0.00% | 0.02 | 0 | 43 | 2.97 | 0.00 | 0.00 | 0.00 | 8/5/2025 | 8/22/2025 3:59:49 PM EST |
| 5.00 | 0.00 | 0.15 | 0.08 | 0.02 | 0.00 | 0.00% | 0.02 | 0 | 2,948 | 1.63 | 0.00 | 0.00 | 0.00 | 8/18/2025 | 8/22/2025 3:59:49 PM EST |
| 7.50 | 0.30 | 0.35 | 0.33 | 0.33 | -0.04 | -10.82% | 0.04 | 1,129 | 4,624 | 0.89 | -0.23 | 0.14 | -0.01 | 8/22/2025 | 8/22/2025 3:59:49 PM EST |
| 10.00 | 1.45 | 1.75 | 1.60 | 1.99 | 0.00 | 0.00% | 0.16 | 0 | 33 | 0.76 | -0.66 | 0.16 | -0.01 | 8/18/2025 | 8/22/2025 3:59:49 PM EST |
| 12.50 | 3.70 | 3.90 | 3.80 | 3.90 | -0.60 | -13.34% | 0.30 | 1 | 30 | 1.06 | -0.90 | 0.08 | -0.01 | 8/22/2025 | 8/22/2025 3:59:49 PM EST |
| 15.00 | 5.80 | 8.10 | 6.95 | 9.15 | 0.00 | 0.00% | 0.46 | 0 | 3 | 0.00 | -0.98 | 0.03 | 0.00 | 5/20/2025 | 8/22/2025 3:59:49 PM EST |
| 17.50 | 8.10 | 9.40 | 8.75 | 13.06 | 0.00 | 0.00% | 0.50 | 0 | 19 | 0.00 | -1.00 | 0.01 | 0.00 | 5/28/2025 | 8/22/2025 3:59:49 PM EST |
| 20.00 | 10.60 | 11.70 | 11.15 | 13.80 | 0.00 | 0.00% | 0.56 | 0 | 23 | 0.00 | -1.00 | 0.00 | 0.00 | 5/12/2025 | 8/22/2025 3:59:49 PM EST |
| 22.50 | 13.00 | 15.40 | 14.20 | 9.30 | 0.00 | 0.00% | 0.63 | 0 | 4 | 4.16 | -1.00 | 0.00 | 0.00 | 2/21/2025 | 8/22/2025 3:59:49 PM EST |
| 25.00 | 15.70 | 18.30 | 17.00 | % | 0.68 | 0 | 0 | 4.78 | -1.00 | 0.00 | 0.00 | 8/22/2025 3:59:49 PM EST |