Options Chain for GENTEX CORP COM (GNTX) - $20.70 as of 3/23/2026 1:58:52 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 | 7.90 | 10.90 | 9.40 | % | 0.75 | 0 | 0 | 3.34 | 1.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 15.00 | 5.40 | 8.40 | 6.90 | % | 0.46 | 0 | 0 | 2.57 | 1.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 17.50 | 2.55 | 5.90 | 4.23 | % | 0.24 | 0 | 0 | 1.91 | 1.00 | 0.03 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 20.00 | 1.30 | 1.70 | 1.50 | 1.52 | +0.27 | +21.60% | 0.07 | 22 | 3 | 0.37 | 0.74 | 0.17 | -0.01 | 3/23/2026 | 3/23/2026 4:00:02 PM EST |
| 22.50 | 0.00 | 0.20 | 0.10 | 0.15 | -0.32 | -68.09% | 0.00 | 2 | 61 | 0.29 | 0.27 | 0.17 | -0.01 | 3/23/2026 | 3/23/2026 4:00:02 PM EST |
| 25.00 | 0.00 | 0.10 | 0.05 | 0.07 | 0.00 | 0.00% | 0.00 | 0 | 1 | 0.46 | 0.04 | 0.04 | 0.00 | 3/16/2026 | 3/23/2026 4:00:02 PM EST |
| 27.50 | 0.00 | 1.50 | 0.75 | % | 0.03 | 0 | 0 | 1.55 | 0.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 30.00 | 0.00 | 0.50 | 0.25 | % | 0.01 | 0 | 0 | 1.18 | 0.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 32.50 | 0.00 | 0.95 | 0.48 | % | 0.01 | 0 | 0 | 1.66 | 0.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 35.00 | 0.00 | 1.50 | 0.75 | % | 0.02 | 0 | 0 | 2.15 | 0.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 37.50 | 0.00 | 2.60 | 1.30 | % | 0.03 | 0 | 0 | 2.87 | 0.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 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 | 0.95 | 0.48 | % | 0.04 | 0 | 0 | 2.25 | 0.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 15.00 | 0.00 | 0.95 | 0.48 | % | 0.03 | 0 | 0 | 1.67 | 0.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 17.50 | 0.00 | 0.25 | 0.13 | % | 0.01 | 0 | 0 | 0.45 | 0.00 | 0.03 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 20.00 | 0.10 | 0.55 | 0.33 | 0.40 | 0.00 | 0.00% | 0.02 | 0 | 42 | 0.34 | -0.26 | 0.17 | -0.01 | 3/20/2026 | 3/23/2026 4:00:02 PM EST |
| 22.50 | 0.70 | 2.40 | 1.55 | 1.71 | 0.00 | 0.00% | 0.07 | 0 | 19 | 0.72 | -0.73 | 0.17 | -0.01 | 3/19/2026 | 3/23/2026 4:00:02 PM EST |
| 25.00 | 2.80 | 5.20 | 4.00 | % | 0.16 | 0 | 0 | 1.20 | -0.96 | 0.04 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 27.50 | 5.50 | 7.20 | 6.35 | % | 0.23 | 0 | 0 | 1.21 | -1.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 30.00 | 8.00 | 9.70 | 8.85 | % | 0.29 | 0 | 0 | 1.42 | -1.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 32.50 | 10.20 | 12.60 | 11.40 | % | 0.35 | 0 | 0 | 1.85 | -1.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 35.00 | 12.70 | 15.10 | 13.90 | % | 0.40 | 0 | 0 | 2.02 | -1.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST | |||
| 37.50 | 14.90 | 17.70 | 16.30 | % | 0.43 | 0 | 0 | 2.23 | -1.00 | 0.00 | 0.00 | 3/23/2026 4:00:02 PM EST |