Options Chain for FIRST INTST BANCSYSTEM INC COM (FIBK) - $38.00 as of 8/3/2026 7:58:31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.00 | 17.10 | 19.20 | 18.15 | 19.45 | 0.00 | 0.00% | 0.91 | 0 | 7 | 2.69 | 1.00 | 0.00 | 0.00 | 7/7/2026 | 7/31/2026 3:59:55 PM EST |
| 22.50 | 14.60 | 16.70 | 15.65 | % | 0.70 | 0 | 0 | 2.29 | 1.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 25.00 | 12.10 | 14.20 | 13.15 | % | 0.53 | 0 | 0 | 1.94 | 1.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 30.00 | 7.10 | 9.20 | 8.15 | % | 0.27 | 0 | 0 | 1.31 | 1.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 35.00 | 2.30 | 4.10 | 3.20 | 4.75 | 0.00 | 0.00% | 0.09 | 0 | 6 | 0.71 | 0.84 | 0.09 | -0.01 | 7/17/2026 | 7/31/2026 3:59:55 PM EST |
| 40.00 | 0.05 | 0.90 | 0.48 | 0.60 | 0.00 | 0.00% | 0.01 | 0 | 45 | 0.33 | 0.24 | 0.11 | -0.02 | 7/21/2026 | 7/31/2026 3:59:55 PM EST |
| 45.00 | 0.00 | 0.55 | 0.28 | 0.05 | 0.00 | 0.00% | 0.01 | 0 | 5 | 0.71 | 0.01 | 0.01 | 0.00 | 7/27/2026 | 7/31/2026 3:59:55 PM EST |
| 50.00 | 0.00 | 0.50 | 0.25 | % | 0.01 | 0 | 0 | 0.94 | 0.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 55.00 | 0.00 | 0.50 | 0.25 | % | 0.00 | 0 | 0 | 1.15 | 0.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.00 | 0.00 | 0.20 | 0.10 | % | 0.01 | 0 | 0 | 1.59 | 0.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 22.50 | 0.00 | 0.50 | 0.25 | % | 0.01 | 0 | 0 | 1.65 | 0.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 25.00 | 0.00 | 0.55 | 0.28 | % | 0.01 | 0 | 0 | 1.41 | 0.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 30.00 | 0.00 | 0.60 | 0.30 | % | 0.01 | 0 | 0 | 0.94 | 0.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 35.00 | 0.05 | 0.75 | 0.40 | 0.30 | 0.00 | 0.00% | 0.01 | 0 | 32 | 0.36 | -0.16 | 0.09 | -0.01 | 7/30/2026 | 7/31/2026 3:59:55 PM EST |
| 40.00 | 1.65 | 3.60 | 2.63 | % | 0.07 | 0 | 0 | 0.64 | -0.76 | 0.11 | -0.02 | 7/31/2026 3:59:55 PM EST | |||
| 45.00 | 6.10 | 8.50 | 7.30 | % | 0.16 | 0 | 0 | 1.01 | -0.99 | 0.01 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 50.00 | 11.10 | 13.60 | 12.35 | % | 0.25 | 0 | 0 | 1.35 | -1.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST | |||
| 55.00 | 16.10 | 18.60 | 17.35 | % | 0.32 | 0 | 0 | 1.61 | -1.00 | 0.00 | 0.00 | 7/31/2026 3:59:55 PM EST |