Options Chain for GENTEX CORP COM (GNTX) - $26.61 as of 10/8/2025 8:19:10 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.00 | 11.00 | 13.80 | 12.40 | % | 0.83 | 0 | 0 | 5.11 | 1.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 17.50 | 8.40 | 11.30 | 9.85 | 11.30 | 0.00 | 0.00% | 0.56 | 0 | 0 | 3.85 | 1.00 | 0.00 | 0.00 | 9/8/2025 | 10/8/2025 3:59:52 PM EST |
| 20.00 | 6.10 | 7.80 | 6.95 | 7.14 | 0.00 | 0.00% | 0.35 | 0 | 0 | 1.54 | 1.00 | 0.00 | 0.00 | 10/7/2025 | 10/8/2025 3:59:52 PM EST |
| 22.50 | 3.50 | 6.30 | 4.90 | % | 0.22 | 0 | 0 | 2.52 | 1.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 25.00 | 1.55 | 3.80 | 2.68 | 2.29 | 0.00 | 0.00% | 0.11 | 0 | 19 | 1.66 | 0.95 | 0.09 | -0.01 | 10/6/2025 | 10/8/2025 3:59:52 PM EST |
| 27.50 | 0.00 | 0.35 | 0.18 | 1.40 | 0.00 | 0.00% | 0.01 | 0 | 59 | 0.43 | 0.21 | 0.29 | -0.02 | 9/11/2025 | 10/8/2025 3:59:52 PM EST |
| 30.00 | 0.00 | 0.75 | 0.38 | 0.10 | 0.00 | 0.00% | 0.01 | 0 | 42 | 1.12 | 0.00 | 0.00 | 0.00 | 10/6/2025 | 10/8/2025 3:59:52 PM EST |
| 32.50 | 0.00 | 0.10 | 0.05 | % | 0.00 | 0 | 0 | 0.81 | 0.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 35.00 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 1.78 | 0.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 37.50 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 2.05 | 0.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 40.00 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 2.28 | 0.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.00 | 0.00 | 2.15 | 1.08 | % | 0.07 | 0 | 0 | 2.92 | 0.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 17.50 | 0.00 | 0.05 | 0.03 | % | 0.00 | 0 | 0 | 1.40 | 0.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 20.00 | 0.00 | 0.05 | 0.03 | 0.03 | 0.00 | 0.00% | 0.00 | 0 | 1 | 1.01 | 0.00 | 0.00 | 0.00 | 10/7/2025 | 10/8/2025 3:59:52 PM EST |
| 22.50 | 0.00 | 0.05 | 0.03 | % | 0.00 | 0 | 0 | 0.65 | 0.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 25.00 | 0.00 | 0.25 | 0.13 | 0.08 | 0.00 | 0.00% | 0.01 | 0 | 39 | 0.52 | -0.05 | 0.09 | -0.01 | 10/7/2025 | 10/8/2025 3:59:52 PM EST |
| 27.50 | 0.00 | 1.05 | 0.53 | 1.13 | 0.00 | 0.00% | 0.02 | 0 | 26 | 0.42 | -0.79 | 0.29 | -0.02 | 10/7/2025 | 10/8/2025 3:59:52 PM EST |
| 30.00 | 2.95 | 5.20 | 4.08 | 2.01 | 0.00 | 0.00% | 0.14 | 0 | 1 | 1.00 | -1.00 | 0.00 | 0.00 | 8/26/2025 | 10/8/2025 3:59:52 PM EST |
| 32.50 | 5.80 | 7.20 | 6.50 | % | 0.20 | 0 | 0 | 1.94 | -1.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 35.00 | 8.30 | 10.20 | 9.25 | % | 0.26 | 0 | 0 | 1.64 | -1.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 37.50 | 10.20 | 12.70 | 11.45 | % | 0.31 | 0 | 0 | 2.91 | -1.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST | |||
| 40.00 | 12.90 | 15.20 | 14.05 | % | 0.35 | 0 | 0 | 3.18 | -1.00 | 0.00 | 0.00 | 10/8/2025 3:59:52 PM EST |