Options Chain for CASTLE BIOSCIENCES INC COM (CSTL) - $40.01 as of 1/16/2026 9:24:42 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 | 18.30 | 22.30 | 20.30 | % | 1.02 | 0 | 0 | 2.53 | 1.00 | 0.00 | 0.00 | 1/16/2026 4:00:06 PM EST | |||
| 22.50 | 15.80 | 19.80 | 17.80 | % | 0.79 | 0 | 0 | 2.19 | 1.00 | 0.00 | 0.00 | 1/16/2026 4:00:06 PM EST | |||
| 25.00 | 13.30 | 17.40 | 15.35 | % | 0.61 | 0 | 0 | 1.93 | 1.00 | 0.00 | 0.00 | 1/16/2026 4:00:06 PM EST | |||
| 30.00 | 8.50 | 12.50 | 10.50 | 10.87 | % | 0.35 | 1 | 0 | 1.49 | 0.97 | 0.01 | -0.01 | 1/16/2026 | 1/16/2026 4:00:06 PM EST | |
| 35.00 | 4.20 | 7.50 | 5.85 | 6.40 | % | 0.17 | 1 | 0 | 0.96 | 0.83 | 0.04 | -0.03 | 1/16/2026 | 1/16/2026 4:00:06 PM EST | |
| 40.00 | 1.60 | 3.80 | 2.70 | 2.51 | 0.00 | 0.00% | 0.07 | 0 | 6 | 0.50 | 0.56 | 0.06 | -0.04 | 1/14/2026 | 1/16/2026 4:00:06 PM EST |
| 45.00 | 0.05 | 1.65 | 0.85 | 1.68 | +0.73 | +76.85% | 0.02 | 3 | 9 | 0.43 | 0.28 | 0.05 | -0.03 | 1/16/2026 | 1/16/2026 4:00:06 PM EST |
| 50.00 | 0.00 | 1.10 | 0.55 | 0.35 | 0.00 | 0.00% | 0.01 | 0 | 1 | 0.78 | 0.11 | 0.03 | -0.02 | 1/15/2026 | 1/16/2026 4:00:06 PM EST |
| 55.00 | 0.00 | 2.20 | 1.10 | % | 0.02 | 0 | 0 | 1.27 | 0.03 | 0.01 | -0.01 | 1/16/2026 4:00:06 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 | 2.15 | 1.08 | % | 0.05 | 0 | 0 | 2.53 | 0.00 | 0.00 | 0.00 | 1/16/2026 4:00:06 PM EST | |||
| 22.50 | 0.00 | 1.85 | 0.93 | % | 0.04 | 0 | 0 | 2.07 | 0.00 | 0.00 | 0.00 | 1/16/2026 4:00:06 PM EST | |||
| 25.00 | 0.00 | 0.75 | 0.38 | % | 0.02 | 0 | 0 | 1.31 | 0.00 | 0.00 | 0.00 | 1/16/2026 4:00:06 PM EST | |||
| 30.00 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 0.91 | -0.03 | 0.01 | -0.01 | 1/16/2026 4:00:06 PM EST | |||
| 35.00 | 0.25 | 1.00 | 0.63 | % | 0.02 | 0 | 0 | 0.51 | -0.17 | 0.04 | -0.03 | 1/16/2026 4:00:06 PM EST | |||
| 40.00 | 1.30 | 3.70 | 2.50 | 3.60 | 0.00 | 0.00% | 0.06 | 0 | 1 | 0.55 | -0.44 | 0.06 | -0.04 | 1/9/2026 | 1/16/2026 4:00:06 PM EST |
| 45.00 | 3.60 | 7.40 | 5.50 | % | 0.12 | 0 | 0 | 0.89 | -0.72 | 0.05 | -0.03 | 1/16/2026 4:00:06 PM EST | |||
| 50.00 | 7.90 | 10.70 | 9.30 | % | 0.19 | 0 | 0 | 0.74 | -0.89 | 0.03 | -0.02 | 1/16/2026 4:00:06 PM EST | |||
| 55.00 | 12.80 | 16.90 | 14.85 | % | 0.27 | 0 | 0 | 1.26 | -0.97 | 0.01 | -0.01 | 1/16/2026 4:00:06 PM EST |