Options Chain for CASTLE BIOSCIENCES INC COM (CSTL) - $34.87 as of 10/22/2026 6:57:36 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 | 13.90 | 17.90 | 15.90 | % | 0.91 | 0 | 0 | 0.00 | 1.00 | 0.00 | 0.00 | 10/22/2026 3:59:55 PM EST | |||
| 20.00 | 11.30 | 15.40 | 13.35 | % | 0.67 | 0 | 0 | 2.31 | 1.00 | 0.00 | 0.00 | 10/22/2026 3:59:55 PM EST | |||
| 22.50 | 8.80 | 13.00 | 10.90 | % | 0.48 | 0 | 0 | 2.02 | 0.99 | 0.00 | -0.01 | 10/22/2026 3:59:55 PM EST | |||
| 25.00 | 6.70 | 10.80 | 8.75 | % | 0.35 | 0 | 0 | 1.73 | 0.96 | 0.01 | -0.02 | 10/22/2026 3:59:55 PM EST | |||
| 30.00 | 2.65 | 6.70 | 4.68 | 6.00 | 0.00 | 0.00% | 0.16 | 0 | 2 | 1.34 | 0.76 | 0.05 | -0.04 | 10/9/2026 | 10/22/2026 3:59:55 PM EST |
| 35.00 | 0.05 | 3.50 | 1.78 | 2.55 | 0.00 | 0.00% | 0.05 | 0 | 1 | 0.63 | 0.42 | 0.07 | -0.04 | 10/12/2026 | 10/22/2026 3:59:55 PM EST |
| 40.00 | 0.00 | 2.25 | 1.13 | 0.92 | 0.00 | 0.00% | 0.03 | 0 | 42 | 1.17 | 0.16 | 0.05 | -0.03 | 10/21/2026 | 10/22/2026 3:59:55 PM EST |
| 45.00 | 0.00 | 2.30 | 1.15 | % | 0.03 | 0 | 0 | 1.49 | 0.05 | 0.02 | -0.01 | 10/22/2026 3:59:55 PM EST | |||
| 50.00 | 0.00 | 1.40 | 0.70 | % | 0.01 | 0 | 0 | 1.44 | 0.01 | 0.01 | 0.00 | 10/22/2026 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.50 | 0.00 | 1.75 | 0.88 | % | 0.05 | 0 | 0 | 2.61 | 0.00 | 0.00 | 0.00 | 10/22/2026 3:59:55 PM EST | |||
| 20.00 | 0.00 | 2.15 | 1.08 | % | 0.05 | 0 | 0 | 2.40 | 0.00 | 0.00 | 0.00 | 10/22/2026 3:59:55 PM EST | |||
| 22.50 | 0.00 | 1.65 | 0.83 | % | 0.04 | 0 | 0 | 1.79 | -0.01 | 0.00 | -0.01 | 10/22/2026 3:59:55 PM EST | |||
| 25.00 | 0.00 | 2.35 | 1.18 | % | 0.05 | 0 | 0 | 1.74 | -0.04 | 0.01 | -0.02 | 10/22/2026 3:59:55 PM EST | |||
| 30.00 | 0.00 | 3.50 | 1.75 | % | 0.06 | 0 | 0 | 1.44 | -0.24 | 0.05 | -0.04 | 10/22/2026 3:59:55 PM EST | |||
| 35.00 | 1.60 | 4.90 | 3.25 | % | 0.09 | 0 | 0 | 1.08 | -0.58 | 0.07 | -0.04 | 10/22/2026 3:59:55 PM EST | |||
| 40.00 | 5.20 | 9.40 | 7.30 | % | 0.18 | 0 | 0 | 1.37 | -0.84 | 0.05 | -0.03 | 10/22/2026 3:59:55 PM EST | |||
| 45.00 | 9.70 | 13.90 | 11.80 | % | 0.26 | 0 | 0 | 1.55 | -0.95 | 0.02 | -0.01 | 10/22/2026 3:59:55 PM EST | |||
| 50.00 | 14.70 | 19.00 | 16.85 | % | 0.34 | 0 | 0 | 1.80 | -0.99 | 0.01 | 0.00 | 10/22/2026 3:59:55 PM EST |