Options Chain for PROTAGONIST THERAPEUTICS INC COM (PTGX) - $83.09 as of 2/20/2026 8:11:38 AM 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22.50 | 58.50 | 62.00 | 60.25 | 33.00 | 0.00 | 0.00% | 2.68 | 0 | 25 | 3.61 | 1.00 | 0.00 | 0.00 | 7/14/2025 | 2/20/2026 3:59:44 PM EST |
| 25.00 | 56.00 | 59.50 | 57.75 | 27.50 | 0.00 | 0.00% | 2.31 | 0 | 26 | 3.33 | 1.00 | 0.00 | 0.00 | 6/3/2025 | 2/20/2026 3:59:44 PM EST |
| 30.00 | 50.50 | 54.50 | 52.50 | % | 1.75 | 0 | 0 | 2.86 | 1.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 35.00 | 45.90 | 49.50 | 47.70 | % | 1.36 | 0 | 0 | 2.46 | 1.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 40.00 | 40.90 | 44.50 | 42.70 | % | 1.07 | 0 | 0 | 2.13 | 1.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 45.00 | 36.00 | 40.00 | 38.00 | 9.30 | 0.00 | 0.00% | 0.84 | 0 | 2 | 1.99 | 1.00 | 0.00 | 0.00 | 5/28/2025 | 2/20/2026 3:59:44 PM EST |
| 50.00 | 31.00 | 35.00 | 33.00 | 37.00 | 0.00 | 0.00% | 0.66 | 0 | 0 | 1.71 | 1.00 | 0.00 | 0.00 | 10/10/2025 | 2/20/2026 3:59:44 PM EST |
| 55.00 | 26.00 | 30.00 | 28.00 | 30.90 | 0.00 | 0.00% | 0.51 | 0 | 15 | 1.45 | 1.00 | 0.00 | -0.01 | 1/15/2026 | 2/20/2026 3:59:44 PM EST |
| 60.00 | 21.20 | 25.00 | 23.10 | % | 0.39 | 0 | 0 | 1.22 | 0.98 | 0.00 | -0.02 | 2/20/2026 3:59:44 PM EST | |||
| 65.00 | 17.00 | 20.40 | 18.70 | 16.95 | 0.00 | 0.00% | 0.29 | 0 | 29 | 1.07 | 0.94 | 0.01 | -0.04 | 2/5/2026 | 2/20/2026 3:59:44 PM EST |
| 70.00 | 12.00 | 15.50 | 13.75 | 18.34 | 0.00 | 0.00% | 0.20 | 0 | 16 | 0.87 | 0.88 | 0.02 | -0.05 | 12/2/2025 | 2/20/2026 3:59:44 PM EST |
| 75.00 | 8.00 | 11.50 | 9.75 | 11.00 | 0.00 | 0.00% | 0.13 | 0 | 12 | 0.49 | 0.76 | 0.02 | -0.08 | 2/6/2026 | 2/20/2026 3:59:44 PM EST |
| 80.00 | 4.50 | 7.90 | 6.20 | 6.02 | 0.00 | 0.00% | 0.08 | 0 | 72 | 0.50 | 0.63 | 0.03 | -0.09 | 2/19/2026 | 2/20/2026 3:59:44 PM EST |
| 85.00 | 2.60 | 5.00 | 3.80 | 3.75 | -0.15 | -3.85% | 0.04 | 5 | 31 | 0.51 | 0.46 | 0.03 | -0.09 | 2/20/2026 | 2/20/2026 3:59:44 PM EST |
| 90.00 | 1.20 | 3.00 | 2.10 | 2.48 | +0.58 | +30.53% | 0.02 | 1 | 415 | 0.50 | 0.30 | 0.03 | -0.07 | 2/20/2026 | 2/20/2026 3:59:44 PM EST |
| 95.00 | 0.05 | 1.90 | 0.98 | 2.10 | 0.00 | 0.00% | 0.01 | 0 | 53 | 0.43 | 0.16 | 0.02 | -0.05 | 2/17/2026 | 2/20/2026 3:59:44 PM EST |
| 100.00 | 0.00 | 4.80 | 2.40 | 1.10 | 0.00 | 0.00% | 0.02 | 0 | 175 | 0.73 | 0.08 | 0.01 | -0.03 | 1/16/2026 | 2/20/2026 3:59:44 PM EST |
| 105.00 | 0.00 | 5.00 | 2.50 | 0.95 | 0.00 | 0.00% | 0.02 | 0 | 4 | 1.29 | 0.04 | 0.01 | -0.02 | 1/5/2026 | 2/20/2026 3:59:44 PM EST |
| 110.00 | 0.00 | 4.90 | 2.45 | % | 0.02 | 0 | 0 | 1.39 | 0.02 | 0.00 | -0.01 | 2/20/2026 3:59:44 PM EST | |||
| 115.00 | 0.00 | 4.90 | 2.45 | % | 0.02 | 0 | 0 | 1.50 | 0.01 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 120.00 | 0.00 | 4.90 | 2.45 | % | 0.02 | 0 | 0 | 1.60 | 0.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 125.00 | 0.00 | 4.90 | 2.45 | 0.50 | 0.00 | 0.00% | 0.02 | 0 | 1 | 1.69 | 0.00 | 0.00 | 0.00 | 12/12/2025 | 2/20/2026 3:59:44 PM EST |
| 130.00 | 0.00 | 4.90 | 2.45 | % | 0.02 | 0 | 0 | 1.78 | 0.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 135.00 | 0.00 | 4.90 | 2.45 | % | 0.02 | 0 | 0 | 1.86 | 0.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22.50 | 0.00 | 4.90 | 2.45 | 0.50 | 0.00 | 0.00% | 0.11 | 0 | 1 | 5.05 | 0.00 | 0.00 | 0.00 | 8/5/2025 | 2/20/2026 3:59:44 PM EST |
| 25.00 | 0.00 | 4.90 | 2.45 | 0.80 | 0.00 | 0.00% | 0.10 | 0 | 1 | 4.66 | 0.00 | 0.00 | 0.00 | 7/28/2025 | 2/20/2026 3:59:44 PM EST |
| 30.00 | 0.00 | 4.90 | 2.45 | 0.80 | 0.00 | 0.00% | 0.08 | 0 | 1 | 4.01 | 0.00 | 0.00 | 0.00 | 8/5/2025 | 2/20/2026 3:59:44 PM EST |
| 35.00 | 0.00 | 4.90 | 2.45 | % | 0.07 | 0 | 0 | 3.49 | 0.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 40.00 | 0.00 | 4.90 | 2.45 | 1.00 | 0.00 | 0.00% | 0.06 | 0 | 1 | 3.04 | 0.00 | 0.00 | 0.00 | 10/9/2025 | 2/20/2026 3:59:44 PM EST |
| 45.00 | 0.00 | 4.90 | 2.45 | 2.10 | 0.00 | 0.00% | 0.05 | 0 | 2 | 2.66 | 0.00 | 0.00 | 0.00 | 8/29/2025 | 2/20/2026 3:59:44 PM EST |
| 50.00 | 0.00 | 4.90 | 2.45 | 2.45 | 0.00 | 0.00% | 0.05 | 0 | 1 | 2.32 | 0.00 | 0.00 | 0.00 | 9/23/2025 | 2/20/2026 3:59:44 PM EST |
| 55.00 | 0.00 | 4.90 | 2.45 | 4.00 | 0.00 | 0.00% | 0.04 | 0 | 1 | 2.01 | 0.00 | 0.00 | -0.01 | 10/3/2025 | 2/20/2026 3:59:44 PM EST |
| 60.00 | 0.00 | 4.90 | 2.45 | 1.45 | 0.00 | 0.00% | 0.04 | 0 | 1 | 1.72 | -0.02 | 0.00 | -0.02 | 11/11/2025 | 2/20/2026 3:59:44 PM EST |
| 65.00 | 0.00 | 2.50 | 1.25 | 3.90 | 0.00 | 0.00% | 0.02 | 0 | 2 | 1.07 | -0.06 | 0.01 | -0.04 | 10/15/2025 | 2/20/2026 3:59:44 PM EST |
| 70.00 | 0.00 | 4.90 | 2.45 | 2.30 | 0.00 | 0.00% | 0.04 | 0 | 44 | 1.20 | -0.12 | 0.02 | -0.05 | 1/29/2026 | 2/20/2026 3:59:44 PM EST |
| 75.00 | 0.30 | 2.80 | 1.55 | 4.40 | 0.00 | 0.00% | 0.02 | 0 | 11 | 0.49 | -0.24 | 0.02 | -0.08 | 1/29/2026 | 2/20/2026 3:59:44 PM EST |
| 80.00 | 1.50 | 5.40 | 3.45 | 3.71 | +0.01 | +0.27% | 0.04 | 3 | 37 | 0.53 | -0.37 | 0.03 | -0.09 | 2/20/2026 | 2/20/2026 3:59:44 PM EST |
| 85.00 | 5.30 | 7.70 | 6.50 | 7.50 | 0.00 | 0.00% | 0.08 | 0 | 1 | 0.59 | -0.54 | 0.03 | -0.09 | 1/6/2026 | 2/20/2026 3:59:44 PM EST |
| 90.00 | 7.10 | 10.90 | 9.00 | 9.74 | 0.00 | 0.00% | 0.10 | 0 | 1 | 0.71 | -0.70 | 0.03 | -0.07 | 10/13/2025 | 2/20/2026 3:59:44 PM EST |
| 95.00 | 11.00 | 15.00 | 13.00 | 11.17 | 0.00 | 0.00% | 0.14 | 0 | 1 | 0.77 | -0.84 | 0.02 | -0.05 | 10/13/2025 | 2/20/2026 3:59:44 PM EST |
| 100.00 | 15.50 | 19.50 | 17.50 | % | 0.17 | 0 | 0 | 0.83 | -0.92 | 0.01 | -0.03 | 2/20/2026 3:59:44 PM EST | |||
| 105.00 | 20.50 | 24.40 | 22.45 | % | 0.21 | 0 | 0 | 0.94 | -0.96 | 0.01 | -0.02 | 2/20/2026 3:59:44 PM EST | |||
| 110.00 | 25.50 | 29.50 | 27.50 | 29.50 | 0.00 | 0.00% | 0.25 | 0 | 0 | 1.06 | -0.98 | 0.00 | -0.01 | 10/13/2025 | 2/20/2026 3:59:44 PM EST |
| 115.00 | 30.50 | 34.50 | 32.50 | % | 0.28 | 0 | 0 | 1.16 | -0.99 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 120.00 | 35.50 | 39.40 | 37.45 | % | 0.31 | 0 | 0 | 1.23 | -1.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 125.00 | 40.30 | 44.50 | 42.40 | % | 0.34 | 0 | 0 | 1.34 | -1.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 130.00 | 45.30 | 49.50 | 47.40 | % | 0.36 | 0 | 0 | 1.42 | -1.00 | 0.00 | 0.00 | 2/20/2026 3:59:44 PM EST | |||
| 135.00 | 50.50 | 54.50 | 52.50 | 53.90 | 0.00 | 0.00% | 0.39 | 0 | 0 | 1.49 | -1.00 | 0.00 | 0.00 | 10/13/2025 | 2/20/2026 3:59:44 PM EST |