Options Chain for GENTEX CORP COM (GNTX) - $23.64 as of 10/27/2025 2:55:20 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 | 10.20 | 13.50 | 11.85 | 15.00 | 0.00 | 0.00% | 0.95 | 0 | 0 | 2.55 | 1.00 | 0.00 | 0.00 | 10/7/2025 | 10/27/2025 1:59:03 PM EST |
| 15.00 | 7.10 | 11.00 | 9.05 | 12.50 | 0.00 | 0.00% | 0.60 | 0 | 1 | 2.04 | 1.00 | 0.00 | 0.00 | 10/7/2025 | 10/27/2025 1:59:03 PM EST |
| 17.50 | 5.70 | 7.10 | 6.40 | 10.30 | 0.00 | 0.00% | 0.37 | 0 | 6 | 1.02 | 1.00 | 0.00 | 0.00 | 9/2/2025 | 10/27/2025 1:59:03 PM EST |
| 20.00 | 3.40 | 4.60 | 4.00 | 5.10 | 0.00 | 0.00% | 0.20 | 0 | 47 | 0.72 | 0.95 | 0.08 | 0.00 | 10/24/2025 | 10/27/2025 1:59:03 PM EST |
| 22.50 | 0.65 | 2.30 | 1.48 | 2.01 | 0.00 | 0.00% | 0.07 | 0 | 398 | 0.49 | 0.72 | 0.16 | 0.00 | 10/24/2025 | 10/27/2025 1:59:03 PM EST |
| 25.00 | 0.40 | 0.55 | 0.48 | 0.48 | +0.09 | +23.08% | 0.02 | 123 | 540 | 0.29 | 0.30 | 0.15 | -0.01 | 10/27/2025 | 10/27/2025 1:59:03 PM EST |
| 27.50 | 0.05 | 0.10 | 0.08 | 0.10 | -0.04 | -28.58% | 0.00 | 6 | 441 | 0.28 | 0.06 | 0.05 | 0.00 | 10/27/2025 | 10/27/2025 1:59:03 PM EST |
| 30.00 | 0.00 | 0.70 | 0.35 | 0.03 | 0.00 | 0.00% | 0.01 | 0 | 817 | 0.70 | 0.01 | 0.01 | 0.00 | 10/24/2025 | 10/27/2025 1:59:03 PM EST |
| 32.50 | 0.00 | 0.95 | 0.48 | 0.40 | 0.00 | 0.00% | 0.01 | 0 | 9 | 0.93 | 0.00 | 0.00 | 0.00 | 9/19/2025 | 10/27/2025 1:59:03 PM EST |
| 35.00 | 0.00 | 1.75 | 0.88 | % | 0.03 | 0 | 0 | 1.32 | 0.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 PM EST | |||
| 37.50 | 0.00 | 0.95 | 0.48 | % | 0.01 | 0 | 0 | 1.15 | 0.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 PM EST | |||
| 40.00 | 0.00 | 0.05 | 0.03 | 0.03 | 0.00 | 0.00% | 0.00 | 0 | 11 | 0.67 | 0.00 | 0.00 | 0.00 | 10/17/2025 | 10/27/2025 1:59:03 PM EST |
| 42.50 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 1.25 | 0.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 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 | 0.05 | 0.03 | 0.38 | 0.00 | 0.00% | 0.00 | 0 | 1 | 0.84 | 0.00 | 0.00 | 0.00 | 10/7/2025 | 10/27/2025 1:59:03 PM EST |
| 15.00 | 0.00 | 1.75 | 0.88 | 0.38 | 0.00 | 0.00% | 0.06 | 0 | 1 | 1.72 | 0.00 | 0.00 | 0.00 | 10/7/2025 | 10/27/2025 1:59:03 PM EST |
| 17.50 | 0.00 | 0.95 | 0.48 | % | 0.03 | 0 | 0 | 1.00 | 0.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 PM EST | |||
| 20.00 | 0.05 | 0.15 | 0.10 | 0.08 | -0.02 | -20.00% | 0.01 | 30 | 366 | 0.30 | -0.05 | 0.08 | 0.00 | 10/27/2025 | 10/27/2025 1:59:03 PM EST |
| 22.50 | 0.10 | 0.85 | 0.48 | 0.29 | 0.00 | 0.00% | 0.02 | 0 | 52 | 0.25 | -0.28 | 0.16 | 0.00 | 10/24/2025 | 10/27/2025 1:59:03 PM EST |
| 25.00 | 1.35 | 1.65 | 1.50 | 1.53 | -0.02 | -1.29% | 0.06 | 5 | 47 | 0.45 | -0.70 | 0.15 | -0.01 | 10/27/2025 | 10/27/2025 1:59:03 PM EST |
| 27.50 | 3.20 | 4.40 | 3.80 | 3.00 | 0.00 | 0.00% | 0.14 | 0 | 67 | 0.45 | -0.94 | 0.05 | 0.00 | 10/24/2025 | 10/27/2025 1:59:03 PM EST |
| 30.00 | 4.60 | 7.50 | 6.05 | 2.25 | 0.00 | 0.00% | 0.20 | 0 | 0 | 0.83 | -0.99 | 0.01 | 0.00 | 9/29/2025 | 10/27/2025 1:59:03 PM EST |
| 32.50 | 7.10 | 10.00 | 8.55 | % | 0.26 | 0 | 0 | 0.97 | -1.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 PM EST | |||
| 35.00 | 9.60 | 12.50 | 11.05 | 7.00 | 0.00 | 0.00% | 0.32 | 0 | 0 | 1.10 | -1.00 | 0.00 | 0.00 | 8/13/2025 | 10/27/2025 1:59:03 PM EST |
| 37.50 | 11.60 | 14.80 | 13.20 | % | 0.35 | 0 | 0 | 1.13 | -1.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 PM EST | |||
| 40.00 | 14.20 | 17.50 | 15.85 | % | 0.40 | 0 | 0 | 1.31 | -1.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 PM EST | |||
| 42.50 | 17.60 | 20.00 | 18.80 | % | 0.44 | 0 | 0 | 1.40 | -1.00 | 0.00 | 0.00 | 10/27/2025 1:59:03 PM EST |