Options Chain for FIRST INTST BANCSYSTEM INC COM (FIBK) - $37.21 as of 1/12/2026 7:47:28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.00 | 19.60 | 24.00 | 21.80 | % | 1.45 | 0 | 0 | 9.89 | 1.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST | |||
| 17.50 | 17.10 | 21.50 | 19.30 | % | 1.10 | 0 | 0 | 8.48 | 1.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST | |||
| 20.00 | 14.60 | 19.00 | 16.80 | 16.05 | 0.00 | 0.00% | 0.84 | 0 | 5 | 7.29 | 1.00 | 0.00 | 0.00 | 12/15/2025 | 1/12/2026 3:59:52 PM EST |
| 22.50 | 12.10 | 16.50 | 14.30 | % | 0.64 | 0 | 0 | 6.24 | 1.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST | |||
| 25.00 | 9.60 | 14.00 | 11.80 | % | 0.47 | 0 | 0 | 5.31 | 1.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST | |||
| 30.00 | 4.70 | 9.00 | 6.85 | 5.81 | 0.00 | 0.00% | 0.23 | 0 | 20 | 3.65 | 1.00 | 0.00 | 0.00 | 12/30/2025 | 1/12/2026 3:59:52 PM EST |
| 35.00 | 0.55 | 3.10 | 1.83 | 2.10 | 0.00 | 0.00% | 0.05 | 0 | 63 | 1.48 | 0.77 | 0.13 | -0.10 | 1/6/2026 | 1/12/2026 3:59:52 PM EST |
| 40.00 | 0.00 | 1.15 | 0.58 | 0.05 | 0.00 | 0.00% | 0.01 | 0 | 5 | 0.76 | 0.08 | 0.06 | -0.04 | 1/5/2026 | 1/12/2026 3:59:52 PM EST |
| 45.00 | 0.00 | 1.15 | 0.58 | % | 0.01 | 0 | 0 | 1.05 | 0.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.00 | 0.00 | 0.75 | 0.38 | % | 0.03 | 0 | 0 | 0.00 | 0.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST | |||
| 17.50 | 0.00 | 1.10 | 0.55 | 0.45 | 0.00 | 0.00% | 0.03 | 0 | 1 | 6.37 | 0.00 | 0.00 | 0.00 | 11/19/2025 | 1/12/2026 3:59:52 PM EST |
| 20.00 | 0.00 | 1.10 | 0.55 | % | 0.03 | 0 | 0 | 5.42 | 0.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST | |||
| 22.50 | 0.00 | 1.10 | 0.55 | % | 0.02 | 0 | 0 | 4.59 | 0.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST | |||
| 25.00 | 0.00 | 1.10 | 0.55 | 0.70 | 0.00 | 0.00% | 0.02 | 0 | 1 | 3.83 | 0.00 | 0.00 | 0.00 | 8/14/2025 | 1/12/2026 3:59:52 PM EST |
| 30.00 | 0.00 | 1.15 | 0.58 | 1.30 | 0.00 | 0.00% | 0.02 | 0 | 6 | 2.53 | 0.00 | 0.00 | 0.00 | 9/29/2025 | 1/12/2026 3:59:52 PM EST |
| 35.00 | 0.00 | 0.75 | 0.38 | 3.80 | 0.00 | 0.00% | 0.01 | 0 | 1 | 0.94 | -0.23 | 0.13 | -0.10 | 8/27/2025 | 1/12/2026 3:59:52 PM EST |
| 40.00 | 1.75 | 5.50 | 3.63 | % | 0.09 | 0 | 0 | 2.22 | -0.92 | 0.06 | -0.04 | 1/12/2026 3:59:52 PM EST | |||
| 45.00 | 6.20 | 10.00 | 8.10 | % | 0.18 | 0 | 0 | 2.74 | -1.00 | 0.00 | 0.00 | 1/12/2026 3:59:52 PM EST |