Options Chain for GENTEX CORP COM (GNTX) - $19.50 as of 11/10/2026 9:49:29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12.50 | 4.90 | 9.00 | 6.95 | 11.70 | 0.00 | 0.00% | 0.56 | 0 | 11 | 2.33 | 1.00 | 0.00 | 0.00 | 5/27/2026 | 11/10/2026 9:59:12 AM EST |
| 15.00 | 3.90 | 5.40 | 4.65 | 6.01 | 0.00 | 0.00% | 0.31 | 0 | 27 | 1.10 | 1.00 | 0.00 | 0.00 | 10/16/2026 | 11/10/2026 9:59:12 AM EST |
| 17.50 | 1.55 | 2.80 | 2.18 | 4.59 | 0.00 | 0.00% | 0.12 | 0 | 52 | 0.62 | 0.90 | 0.09 | -0.01 | 10/6/2026 | 11/10/2026 9:59:12 AM EST |
| 20.00 | 0.45 | 0.90 | 0.68 | 0.60 | 0.00 | 0.00% | 0.03 | 0 | 183 | 0.29 | 0.44 | 0.22 | -0.01 | 11/9/2026 | 11/10/2026 9:59:12 AM EST |
| 22.50 | 0.00 | 0.20 | 0.10 | 0.06 | 0.00 | 0.00% | 0.00 | 0 | 180 | 0.48 | 0.08 | 0.08 | 0.00 | 11/9/2026 | 11/10/2026 9:59:12 AM EST |
| 25.00 | 0.00 | 0.20 | 0.10 | 0.06 | 0.00 | 0.00% | 0.00 | 0 | 326 | 0.58 | 0.01 | 0.01 | 0.00 | 11/5/2026 | 11/10/2026 9:59:12 AM EST |
| 27.50 | 0.00 | 0.05 | 0.03 | 0.10 | 0.00 | 0.00% | 0.00 | 0 | 86 | 0.56 | 0.00 | 0.00 | 0.00 | 10/26/2026 | 11/10/2026 9:59:12 AM EST |
| 30.00 | 0.00 | 1.00 | 0.50 | 0.15 | 0.00 | 0.00% | 0.02 | 0 | 8 | 1.39 | 0.00 | 0.00 | 0.00 | 8/13/2026 | 11/10/2026 9:59:12 AM EST |
| 32.50 | 0.00 | 2.15 | 1.08 | 0.37 | 0.00 | 0.00% | 0.03 | 0 | 81 | 2.08 | 0.00 | 0.00 | 0.00 | 7/6/2026 | 11/10/2026 9:59:12 AM 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 | 1.00 | 0.50 | 0.08 | 0.00 | 0.00% | 0.04 | 0 | 46 | 1.73 | 0.00 | 0.00 | 0.00 | 5/29/2026 | 11/10/2026 9:59:12 AM EST |
| 15.00 | 0.00 | 0.75 | 0.38 | 0.03 | 0.00 | 0.00% | 0.03 | 0 | 32 | 1.08 | 0.00 | 0.00 | 0.00 | 10/26/2026 | 11/10/2026 9:59:12 AM EST |
| 17.50 | 0.00 | 0.20 | 0.10 | 0.07 | 0.00 | 0.00% | 0.01 | 0 | 83 | 1.38 | -0.10 | 0.09 | -0.01 | 10/26/2026 | 11/10/2026 9:59:12 AM EST |
| 20.00 | 0.85 | 1.00 | 0.93 | 0.85 | 0.00 | 0.00% | 0.05 | 0 | 178 | 0.28 | -0.56 | 0.22 | -0.01 | 11/9/2026 | 11/10/2026 9:59:12 AM EST |
| 22.50 | 1.05 | 5.10 | 3.08 | 1.86 | 0.00 | 0.00% | 0.14 | 0 | 73 | 1.35 | -0.92 | 0.08 | 0.00 | 10/15/2026 | 11/10/2026 9:59:12 AM EST |
| 25.00 | 3.50 | 7.70 | 5.60 | 1.95 | 0.00 | 0.00% | 0.22 | 0 | 0 | 1.62 | -0.99 | 0.01 | 0.00 | 8/21/2026 | 11/10/2026 9:59:12 AM EST |
| 27.50 | 6.70 | 10.20 | 8.45 | 4.45 | 0.00 | 0.00% | 0.31 | 0 | 0 | 1.84 | -1.00 | 0.00 | 0.00 | 9/11/2026 | 11/10/2026 9:59:12 AM EST |
| 30.00 | 8.70 | 12.70 | 10.70 | 6.18 | 0.00 | 0.00% | 0.36 | 0 | 0 | 2.03 | -1.00 | 0.00 | 0.00 | 5/27/2026 | 11/10/2026 9:59:12 AM EST |
| 32.50 | 11.00 | 15.20 | 13.10 | % | 0.40 | 0 | 0 | 2.20 | -1.00 | 0.00 | 0.00 | 11/10/2026 9:59:12 AM EST |