Options Chain for COLUMBIA BKG SYS INC COM (COLB) - $31.24 as of 7/31/2026 7:40:08 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.50 | 12.40 | 16.10 | 14.25 | % | 0.81 | 0 | 0 | 2.15 | 0.99 | 0.00 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 20.00 | 9.90 | 13.60 | 11.75 | % | 0.59 | 0 | 0 | 1.78 | 0.99 | 0.00 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 22.50 | 7.50 | 10.90 | 9.20 | % | 0.41 | 0 | 0 | 1.39 | 0.98 | 0.00 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 25.00 | 4.80 | 8.20 | 6.50 | % | 0.26 | 0 | 0 | 1.05 | 0.96 | 0.02 | -0.01 | 7/31/2026 4:00:01 PM EST | |||
| 30.00 | 0.75 | 4.30 | 2.53 | 1.83 | 0.00 | 0.00% | 0.08 | 0 | 3 | 0.79 | 0.68 | 0.09 | -0.02 | 7/27/2026 | 7/31/2026 4:00:01 PM EST |
| 35.00 | 0.00 | 0.95 | 0.48 | 0.72 | 0.00 | 0.00% | 0.01 | 0 | 4 | 0.47 | 0.21 | 0.08 | -0.01 | 7/20/2026 | 7/31/2026 4:00:01 PM EST |
| 40.00 | 0.00 | 0.80 | 0.40 | % | 0.01 | 0 | 0 | 0.68 | 0.03 | 0.02 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 45.00 | 0.00 | 0.55 | 0.28 | % | 0.01 | 0 | 0 | 0.78 | 0.00 | 0.00 | 0.00 | 7/31/2026 4:00:01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.50 | 0.00 | 1.15 | 0.58 | % | 0.03 | 0 | 0 | 1.64 | -0.01 | 0.00 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 20.00 | 0.00 | 1.15 | 0.58 | % | 0.03 | 0 | 0 | 1.35 | -0.01 | 0.00 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 22.50 | 0.00 | 0.80 | 0.40 | % | 0.02 | 0 | 0 | 0.96 | -0.02 | 0.00 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 25.00 | 0.00 | 0.85 | 0.43 | 0.25 | 0.00 | 0.00% | 0.02 | 0 | 1 | 0.76 | -0.04 | 0.02 | -0.01 | 7/23/2026 | 7/31/2026 4:00:01 PM EST |
| 30.00 | 0.10 | 1.75 | 0.93 | 0.95 | 0.00 | 0.00% | 0.03 | 0 | 6 | 0.34 | -0.32 | 0.09 | -0.02 | 7/27/2026 | 7/31/2026 4:00:01 PM EST |
| 35.00 | 2.75 | 5.70 | 4.23 | 2.95 | 0.00 | 0.00% | 0.12 | 0 | 6 | 0.79 | -0.79 | 0.08 | -0.01 | 7/20/2026 | 7/31/2026 4:00:01 PM EST |
| 40.00 | 7.80 | 10.10 | 8.95 | % | 0.22 | 0 | 0 | 0.95 | -0.97 | 0.02 | 0.00 | 7/31/2026 4:00:01 PM EST | |||
| 45.00 | 12.60 | 15.10 | 13.85 | % | 0.31 | 0 | 0 | 1.18 | -1.00 | 0.00 | 0.00 | 7/31/2026 4:00:01 PM EST |