Options Chain for CASTLE BIOSCIENCES INC COM (CSTL) - $24.21 as of 10/31/2025 4:06:14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12.50 | 10.90 | 14.90 | 12.90 | % | 1.03 | 0 | 0 | 3.32 | 1.00 | 0.00 | 0.00 | 10/31/2025 4:00:00 PM EST | |||
| 15.00 | 8.40 | 12.40 | 10.40 | % | 0.69 | 0 | 0 | 2.74 | 1.00 | 0.00 | 0.00 | 10/31/2025 4:00:00 PM EST | |||
| 17.50 | 6.00 | 9.90 | 7.95 | % | 0.45 | 0 | 0 | 2.36 | 1.00 | 0.00 | 0.00 | 10/31/2025 4:00:00 PM EST | |||
| 20.00 | 3.60 | 7.20 | 5.40 | 3.76 | 0.00 | 0.00% | 0.27 | 0 | 1 | 1.65 | 0.93 | 0.05 | -0.01 | 10/17/2025 | 10/31/2025 4:00:00 PM EST |
| 22.50 | 3.10 | 4.70 | 3.90 | 2.40 | 0.00 | 0.00% | 0.17 | 0 | 21 | 1.00 | 0.76 | 0.07 | -0.03 | 10/27/2025 | 10/31/2025 4:00:00 PM EST |
| 25.00 | 1.55 | 2.25 | 1.90 | 1.45 | -0.01 | -0.69% | 0.08 | 20 | 308 | 0.75 | 0.55 | 0.08 | -0.04 | 10/31/2025 | 10/31/2025 4:00:00 PM EST |
| 30.00 | 0.25 | 0.70 | 0.48 | 0.60 | % | 0.02 | 2 | 0 | 0.76 | 0.21 | 0.06 | -0.03 | 10/31/2025 | 10/31/2025 4:00:00 PM EST | |
| 35.00 | 0.00 | 2.30 | 1.15 | % | 0.03 | 0 | 0 | 1.62 | 0.05 | 0.02 | -0.01 | 10/31/2025 4:00:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12.50 | 0.00 | 1.75 | 0.88 | % | 0.07 | 0 | 0 | 3.63 | 0.00 | 0.00 | 0.00 | 10/31/2025 4:00:00 PM EST | |||
| 15.00 | 0.00 | 2.15 | 1.08 | % | 0.07 | 0 | 0 | 2.31 | 0.00 | 0.00 | 0.00 | 10/31/2025 4:00:00 PM EST | |||
| 17.50 | 0.00 | 2.15 | 1.08 | % | 0.06 | 0 | 0 | 2.30 | 0.00 | 0.00 | 0.00 | 10/31/2025 4:00:00 PM EST | |||
| 20.00 | 0.00 | 1.75 | 0.88 | % | 0.04 | 0 | 0 | 1.76 | -0.07 | 0.05 | -0.01 | 10/31/2025 4:00:00 PM EST | |||
| 22.50 | 0.00 | 1.75 | 0.88 | 1.35 | 0.00 | 0.00% | 0.04 | 0 | 3 | 0.80 | -0.24 | 0.07 | -0.03 | 10/21/2025 | 10/31/2025 4:00:00 PM EST |
| 25.00 | 1.30 | 2.95 | 2.13 | 2.30 | 0.00 | 0.00% | 0.09 | 0 | 1 | 0.91 | -0.45 | 0.08 | -0.04 | 10/23/2025 | 10/31/2025 4:00:00 PM EST |
| 30.00 | 3.70 | 7.00 | 5.35 | % | 0.18 | 0 | 0 | 1.56 | -0.79 | 0.06 | -0.03 | 10/31/2025 4:00:00 PM EST | |||
| 35.00 | 8.30 | 11.70 | 10.00 | % | 0.29 | 0 | 0 | 1.95 | -0.95 | 0.02 | -0.01 | 10/31/2025 4:00:00 PM EST |