Options Chain for FIRST INTST BANCSYSTEM INC COM (FIBK) - $36.92 as of 9/17/2026 2:04:42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.00 | 16.30 | 18.20 | 17.25 | 19.10 | 0.00 | 0.00% | 0.86 | 0 | 5 | 0.00 | 1.00 | 0.00 | 0.00 | 8/14/2026 | 9/17/2026 4:00:03 PM EST |
| 22.50 | 13.90 | 15.70 | 14.80 | % | 0.66 | 0 | 0 | 9.07 | 1.00 | 0.00 | 0.00 | 9/17/2026 4:00:03 PM EST | |||
| 25.00 | 11.20 | 13.20 | 12.20 | 14.70 | 0.00 | 0.00% | 0.49 | 0 | 6 | 7.61 | 1.00 | 0.00 | 0.00 | 8/17/2026 | 9/17/2026 4:00:03 PM EST |
| 30.00 | 6.40 | 8.20 | 7.30 | 9.49 | 0.00 | 0.00% | 0.24 | 0 | 0 | 4.99 | 1.00 | 0.00 | 0.00 | 7/17/2026 | 9/17/2026 4:00:03 PM EST |
| 35.00 | 1.40 | 3.30 | 2.35 | 1.70 | 0.00 | 0.00% | 0.07 | 0 | 32 | 2.67 | 0.89 | 0.10 | -0.10 | 9/1/2026 | 9/17/2026 4:00:03 PM EST |
| 40.00 | 0.00 | 0.05 | 0.03 | 0.11 | 0.00 | 0.00% | 0.00 | 0 | 79 | 0.91 | 0.06 | 0.07 | -0.05 | 9/16/2026 | 9/17/2026 4:00:03 PM EST |
| 45.00 | 0.00 | 0.50 | 0.25 | 0.27 | 0.00 | 0.00% | 0.01 | 0 | 60 | 1.95 | 0.00 | 0.00 | 0.00 | 7/21/2026 | 9/17/2026 4:00:03 PM EST |
| 50.00 | 0.00 | 0.50 | 0.25 | % | 0.01 | 0 | 0 | 4.48 | 0.00 | 0.00 | 0.00 | 9/17/2026 4:00:03 PM EST | |||
| 55.00 | 0.00 | 4.60 | 2.30 | % | 0.04 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 9/17/2026 4:00:03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.00 | 0.00 | 0.50 | 0.25 | % | 0.01 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 9/17/2026 4:00:03 PM EST | |||
| 22.50 | 0.00 | 0.50 | 0.25 | 0.55 | 0.00 | 0.00% | 0.01 | 0 | 2 | 0.00 | 0.00 | 0.00 | 0.00 | 4/15/2026 | 9/17/2026 4:00:03 PM EST |
| 25.00 | 0.00 | 0.20 | 0.10 | 0.30 | 0.00 | 0.00% | 0.00 | 0 | 14 | 4.88 | 0.00 | 0.00 | 0.00 | 5/18/2026 | 9/17/2026 4:00:03 PM EST |
| 30.00 | 0.00 | 0.50 | 0.25 | 0.30 | 0.00 | 0.00% | 0.01 | 0 | 33 | 3.87 | 0.00 | 0.00 | 0.00 | 8/17/2026 | 9/17/2026 4:00:03 PM EST |
| 35.00 | 0.00 | 0.50 | 0.25 | 0.40 | 0.00 | 0.00% | 0.01 | 0 | 6 | 1.74 | -0.11 | 0.10 | -0.10 | 8/11/2026 | 9/17/2026 4:00:03 PM EST |
| 40.00 | 1.80 | 3.60 | 2.70 | 5.00 | 0.00 | 0.00% | 0.07 | 0 | 0 | 2.32 | -0.94 | 0.07 | -0.05 | 6/17/2026 | 9/17/2026 4:00:03 PM EST |
| 45.00 | 6.80 | 8.60 | 7.70 | 9.45 | 0.00 | 0.00% | 0.17 | 0 | 0 | 3.91 | -1.00 | 0.00 | 0.00 | 6/17/2026 | 9/17/2026 4:00:03 PM EST |
| 50.00 | 11.80 | 13.60 | 12.70 | % | 0.25 | 0 | 0 | 5.14 | -1.00 | 0.00 | 0.00 | 9/17/2026 4:00:03 PM EST | |||
| 55.00 | 15.50 | 20.00 | 17.75 | % | 0.32 | 0 | 0 | 8.69 | -1.00 | 0.00 | 0.00 | 9/17/2026 4:00:03 PM EST |