Options Chain for GENTEX CORP COM (GNTX) - $27.23 as of 8/13/2025 7:30:13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12.50 | 13.40 | 17.40 | 15.40 | 12.29 | 0.00 | 0.00% | 1.23 | 0 | 2 | 3.07 | 1.00 | 0.00 | 0.00 | 3/26/2025 | 8/13/2025 3:59:45 PM EST |
| 15.00 | 12.10 | 14.90 | 13.50 | % | 0.90 | 0 | 0 | 2.52 | 1.00 | 0.00 | 0.00 | 8/13/2025 3:59:45 PM EST | |||
| 17.50 | 9.80 | 12.40 | 11.10 | 10.00 | 0.00 | 0.00% | 0.63 | 0 | 9 | 1.75 | 1.00 | 0.00 | 0.00 | 7/25/2025 | 8/13/2025 3:59:45 PM EST |
| 20.00 | 7.90 | 8.20 | 8.05 | 7.56 | 0.00 | 0.00% | 0.40 | 0 | 52 | 0.77 | 1.00 | 0.00 | 0.00 | 7/29/2025 | 8/13/2025 3:59:45 PM EST |
| 22.50 | 4.90 | 7.50 | 6.20 | 3.94 | 0.00 | 0.00% | 0.28 | 0 | 78 | 0.46 | 0.99 | 0.01 | 0.00 | 8/1/2025 | 8/13/2025 3:59:45 PM EST |
| 25.00 | 3.00 | 3.20 | 3.10 | 2.58 | 0.00 | 0.00% | 0.12 | 0 | 403 | 0.25 | 0.92 | 0.06 | -0.01 | 8/12/2025 | 8/13/2025 3:59:45 PM EST |
| 27.50 | 0.00 | 1.30 | 0.65 | 0.90 | +0.19 | +26.77% | 0.02 | 7 | 99 | 0.29 | 0.61 | 0.18 | -0.01 | 8/13/2025 | 8/13/2025 3:59:45 PM EST |
| 30.00 | 0.00 | 0.70 | 0.35 | 0.09 | 0.00 | 0.00% | 0.01 | 0 | 497 | 0.31 | 0.17 | 0.13 | -0.01 | 8/12/2025 | 8/13/2025 3:59:45 PM EST |
| 32.50 | 0.00 | 1.75 | 0.88 | 0.07 | 0.00 | 0.00% | 0.03 | 0 | 5 | 0.93 | 0.02 | 0.03 | 0.00 | 4/3/2025 | 8/13/2025 3:59:45 PM EST |
| 35.00 | 0.00 | 0.05 | 0.03 | 0.04 | -0.06 | -60.00% | 0.00 | 4 | 21 | 0.38 | 0.00 | 0.00 | 0.00 | 8/13/2025 | 8/13/2025 3:59:45 PM EST |
| 37.50 | 0.00 | 1.35 | 0.68 | % | 0.02 | 0 | 0 | 1.06 | 0.00 | 0.00 | 0.00 | 8/13/2025 3:59:45 PM EST | |||
| 40.00 | 0.00 | 1.55 | 0.78 | 0.05 | 0.00 | 0.00% | 0.02 | 0 | 2 | 1.26 | 0.00 | 0.00 | 0.00 | 6/25/2025 | 8/13/2025 3:59:45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12.50 | 0.00 | 0.65 | 0.33 | % | 0.03 | 0 | 0 | 2.26 | 0.00 | 0.00 | 0.00 | 8/13/2025 3:59:45 PM EST | |||
| 15.00 | 0.00 | 1.00 | 0.50 | 0.22 | 0.00 | 0.00% | 0.03 | 0 | 5 | 1.84 | 0.00 | 0.00 | 0.00 | 2/10/2025 | 8/13/2025 3:59:45 PM EST |
| 17.50 | 0.00 | 1.60 | 0.80 | 0.08 | 0.00 | 0.00% | 0.05 | 0 | 1 | 1.89 | 0.00 | 0.00 | 0.00 | 6/2/2025 | 8/13/2025 3:59:45 PM EST |
| 20.00 | 0.00 | 0.25 | 0.13 | 0.10 | 0.00 | 0.00% | 0.01 | 0 | 44 | 0.79 | 0.00 | 0.00 | 0.00 | 7/25/2025 | 8/13/2025 3:59:45 PM EST |
| 22.50 | 0.00 | 0.10 | 0.05 | 0.13 | 0.00 | 0.00% | 0.00 | 0 | 79 | 0.45 | -0.01 | 0.01 | 0.00 | 8/1/2025 | 8/13/2025 3:59:45 PM EST |
| 25.00 | 0.00 | 0.20 | 0.10 | 0.23 | 0.00 | 0.00% | 0.00 | 0 | 23 | 0.36 | -0.08 | 0.06 | -0.01 | 8/12/2025 | 8/13/2025 3:59:45 PM EST |
| 27.50 | 0.55 | 0.70 | 0.63 | 0.69 | -0.66 | -48.89% | 0.02 | 5 | 4 | 0.24 | -0.39 | 0.18 | -0.01 | 8/13/2025 | 8/13/2025 3:59:45 PM EST |
| 30.00 | 2.10 | 3.40 | 2.75 | 3.80 | 0.00 | 0.00% | 0.09 | 0 | 1 | 0.27 | -0.83 | 0.13 | -0.01 | 8/1/2025 | 8/13/2025 3:59:45 PM EST |
| 32.50 | 3.90 | 6.10 | 5.00 | 7.98 | 0.00 | 0.00% | 0.15 | 0 | 0 | 0.89 | -0.98 | 0.03 | 0.00 | 3/12/2025 | 8/13/2025 3:59:45 PM EST |
| 35.00 | 6.50 | 9.00 | 7.75 | % | 0.22 | 0 | 0 | 1.19 | -1.00 | 0.00 | 0.00 | 8/13/2025 3:59:45 PM EST | |||
| 37.50 | 8.90 | 10.80 | 9.85 | % | 0.26 | 0 | 0 | 1.12 | -1.00 | 0.00 | 0.00 | 8/13/2025 3:59:45 PM EST | |||
| 40.00 | 11.40 | 13.90 | 12.65 | % | 0.32 | 0 | 0 | 1.46 | -1.00 | 0.00 | 0.00 | 8/13/2025 3:59:45 PM EST |