Options Chain for GENTEX CORP COM (GNTX) - $23.87 as of 8/17/2026 7:36:42 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 | 7.90 | 10.90 | 9.40 | 10.84 | 0.00 | 0.00% | 0.63 | 0 | 0 | 6.96 | 1.00 | 0.00 | 0.00 | 6/18/2026 | 8/17/2026 3:59:51 PM EST |
| 17.50 | 5.40 | 8.20 | 6.80 | % | 0.39 | 0 | 0 | 5.16 | 1.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 PM EST | |||
| 20.00 | 2.50 | 5.40 | 3.95 | 2.65 | 0.00 | 0.00% | 0.20 | 0 | 3 | 3.48 | 1.00 | 0.00 | 0.00 | 7/24/2026 | 8/17/2026 3:59:51 PM EST |
| 22.50 | 0.85 | 2.30 | 1.58 | 1.75 | 0.00 | 0.00% | 0.07 | 0 | 75 | 1.63 | 0.91 | 0.17 | -0.03 | 8/5/2026 | 8/17/2026 3:59:51 PM EST |
| 25.00 | 0.00 | 0.35 | 0.18 | 0.05 | 0.00 | 0.00% | 0.01 | 0 | 254 | 0.81 | 0.14 | 0.20 | -0.03 | 8/12/2026 | 8/17/2026 3:59:51 PM EST |
| 27.50 | 0.00 | 0.25 | 0.13 | 0.11 | 0.00 | 0.00% | 0.00 | 0 | 93 | 1.29 | 0.00 | 0.00 | 0.00 | 7/29/2026 | 8/17/2026 3:59:51 PM EST |
| 30.00 | 0.00 | 0.75 | 0.38 | 0.05 | 0.00 | 0.00% | 0.01 | 0 | 5 | 2.55 | 0.00 | 0.00 | 0.00 | 7/20/2026 | 8/17/2026 3:59:51 PM EST |
| 32.50 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 3.03 | 0.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 PM EST | |||
| 35.00 | 0.00 | 0.10 | 0.05 | 0.01 | 0.00 | 0.00% | 0.00 | 0 | 1 | 2.10 | 0.00 | 0.00 | 0.00 | 6/30/2026 | 8/17/2026 3:59:51 PM EST |
| 37.50 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 3.82 | 0.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 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 | 0.75 | 0.38 | 0.05 | 0.00 | 0.00% | 0.03 | 0 | 2 | 4.48 | 0.00 | 0.00 | 0.00 | 7/24/2026 | 8/17/2026 3:59:51 PM EST |
| 17.50 | 0.00 | 0.05 | 0.03 | 0.10 | 0.00 | 0.00% | 0.00 | 0 | 44 | 1.63 | 0.00 | 0.00 | 0.00 | 7/24/2026 | 8/17/2026 3:59:51 PM EST |
| 20.00 | 0.00 | 0.75 | 0.38 | 0.05 | 0.00 | 0.00% | 0.02 | 0 | 22 | 2.34 | 0.00 | 0.00 | 0.00 | 7/31/2026 | 8/17/2026 3:59:51 PM EST |
| 22.50 | 0.00 | 0.50 | 0.25 | 0.10 | 0.00 | 0.00% | 0.01 | 0 | 132 | 1.05 | -0.09 | 0.17 | -0.03 | 8/11/2026 | 8/17/2026 3:59:51 PM EST |
| 25.00 | 1.10 | 1.35 | 1.23 | 1.30 | 0.00 | 0.00% | 0.05 | 0 | 183 | 0.52 | -0.86 | 0.20 | -0.03 | 8/10/2026 | 8/17/2026 3:59:51 PM EST |
| 27.50 | 2.70 | 4.70 | 3.70 | % | 0.13 | 0 | 0 | 2.24 | -1.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 PM EST | |||
| 30.00 | 5.40 | 7.10 | 6.25 | % | 0.21 | 0 | 0 | 2.72 | -1.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 PM EST | |||
| 32.50 | 7.90 | 9.60 | 8.75 | % | 0.27 | 0 | 0 | 3.21 | -1.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 PM EST | |||
| 35.00 | 10.40 | 12.10 | 11.25 | % | 0.32 | 0 | 0 | 3.64 | -1.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 PM EST | |||
| 37.50 | 12.50 | 14.80 | 13.65 | % | 0.36 | 0 | 0 | 4.31 | -1.00 | 0.00 | 0.00 | 8/17/2026 3:59:51 PM EST |