As of 2026-10-07, the Relative Valuation of Castle Biosciences Inc (CSTL) is (17.51) USD. This relative valuation is based on P/E multiples. With the latest stock price at 33.36 USD, the upside of Castle Biosciences Inc based on Relative Valuation is -152.5%.
The range of the Relative Valuation is (20.06) - (16.22) USD.
Note: valuation result may not be accurate due to the company's negative earnings.
| Range | Selected | |
| Trailing P/E multiples | 31.3x - 31.7x | 31.4x |
| Forward P/E multiples | 18.1x - 25.3x | 23.3x |
| Fair Price | (20.06) - (16.22) | (17.51) |
| Upside | -160.1% - -148.6% | -152.5% |
| Date | P/E |
| 2026-10-06 | -52.11 |
| 2026-10-05 | -57.25 |
| 2026-10-02 | -55.55 |
| 2026-10-01 | -55.08 |
| 2026-09-30 | -55.50 |
| 2026-09-29 | -54.49 |
| 2026-09-28 | -56.13 |
| 2026-09-25 | -55.94 |
| 2026-09-24 | -54.97 |
| 2026-09-23 | -54.49 |
| 2026-09-22 | -54.44 |
| 2026-09-21 | -54.66 |
| 2026-09-18 | -55.21 |
| 2026-09-17 | -57.46 |
| 2026-09-16 | -55.43 |
| 2026-09-15 | -55.46 |
| 2026-09-14 | -52.24 |
| 2026-09-11 | -50.51 |
| 2026-09-10 | -50.49 |
| 2026-09-09 | -50.47 |
| 2026-09-08 | -51.18 |
| 2026-09-04 | -51.41 |
| 2026-09-03 | -51.01 |
| 2026-09-02 | -52.21 |
| 2026-09-01 | -52.24 |
| 2026-08-31 | -51.60 |
| 2026-08-28 | -52.33 |
| 2026-08-27 | -53.52 |
| 2026-08-26 | -53.24 |
| 2026-08-25 | -54.68 |
| 2026-08-24 | -52.29 |
| 2026-08-21 | -53.43 |
| 2026-08-20 | -51.44 |
| 2026-08-19 | -50.49 |
| 2026-08-18 | -45.35 |
| 2026-08-17 | -46.79 |
| 2026-08-14 | -46.27 |
| 2026-08-13 | -47.73 |
| 2026-08-12 | -49.10 |
| 2026-08-11 | -50.37 |
| 2026-08-10 | -50.54 |
| 2026-08-07 | -50.04 |
| 2026-08-06 | -47.60 |
| 2026-08-05 | -47.49 |
| 2026-08-04 | -48.71 |
| 2026-08-03 | -47.48 |
| 2026-07-31 | -43.74 |
| 2026-07-30 | -41.85 |
| 2026-07-29 | -38.21 |
| 2026-07-28 | -37.32 |