Options Chain for GENTEX CORP COM (GNTX) - $22.58 as of 9/15/2026 11:33:10 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 | 8.80 | 10.80 | 9.80 | % | 0.78 | 0 | 0 | 1.99 | 0.99 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 15.00 | 6.90 | 8.30 | 7.60 | 8.91 | 0.00 | 0.00% | 0.51 | 0 | 7 | 1.50 | 0.99 | 0.00 | 0.00 | 8/21/2026 | 9/15/2026 9:59:00 AM EST |
| 17.50 | 4.60 | 5.70 | 5.15 | 6.60 | 0.00 | 0.00% | 0.29 | 0 | 5 | 1.01 | 0.99 | 0.00 | 0.00 | 8/21/2026 | 9/15/2026 9:59:00 AM EST |
| 20.00 | 2.10 | 3.30 | 2.70 | 4.21 | 0.00 | 0.00% | 0.14 | 0 | 20 | 0.69 | 0.95 | 0.05 | -0.01 | 8/21/2026 | 9/15/2026 9:59:00 AM EST |
| 22.50 | 0.40 | 1.00 | 0.70 | 0.80 | 0.00 | 0.00% | 0.03 | 0 | 3 | 0.25 | 0.54 | 0.25 | -0.01 | 9/10/2026 | 9/15/2026 9:59:00 AM EST |
| 25.00 | 0.00 | 0.40 | 0.20 | 0.05 | -0.12 | -70.59% | 0.01 | 2 | 59 | 0.61 | 0.08 | 0.10 | 0.00 | 9/15/2026 | 9/15/2026 9:59:00 AM EST |
| 27.50 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 0.85 | 0.00 | 0.01 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 30.00 | 0.00 | 0.05 | 0.03 | % | 0.00 | 0 | 0 | 0.52 | 0.00 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 32.50 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 1.21 | 0.00 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 35.00 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 1.36 | 0.00 | 0.00 | 0.00 | 9/15/2026 9:59:00 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 | 0.75 | 0.38 | % | 0.03 | 0 | 0 | 1.98 | -0.01 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 15.00 | 0.00 | 0.75 | 0.38 | % | 0.03 | 0 | 0 | 1.51 | -0.01 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 17.50 | 0.00 | 0.75 | 0.38 | % | 0.02 | 0 | 0 | 1.09 | -0.01 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 20.00 | 0.00 | 0.20 | 0.10 | 0.15 | 0.00 | 0.00% | 0.01 | 0 | 22 | 0.41 | -0.05 | 0.05 | -0.01 | 9/1/2026 | 9/15/2026 9:59:00 AM EST |
| 22.50 | 0.35 | 0.80 | 0.58 | 0.65 | 0.00 | 0.00% | 0.03 | 0 | 44 | 0.24 | -0.46 | 0.25 | -0.01 | 9/14/2026 | 9/15/2026 9:59:00 AM EST |
| 25.00 | 1.80 | 3.40 | 2.60 | 2.20 | 0.00 | 0.00% | 0.10 | 0 | 34 | 0.73 | -0.92 | 0.10 | 0.00 | 9/11/2026 | 9/15/2026 9:59:00 AM EST |
| 27.50 | 4.40 | 5.50 | 4.95 | 4.49 | 0.00 | 0.00% | 0.18 | 0 | 17 | 0.79 | -1.00 | 0.01 | 0.00 | 8/28/2026 | 9/15/2026 9:59:00 AM EST |
| 30.00 | 6.70 | 8.20 | 7.45 | % | 0.25 | 0 | 0 | 1.10 | -1.00 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 32.50 | 9.20 | 10.90 | 10.05 | % | 0.31 | 0 | 0 | 1.38 | -1.00 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST | |||
| 35.00 | 11.30 | 13.60 | 12.45 | % | 0.36 | 0 | 0 | 1.64 | -1.00 | 0.00 | 0.00 | 9/15/2026 9:59:00 AM EST |