Castle Biosciences Stock Price History
NASDAQ: CSTLHealth CareMedical SpecialitiesUSD
34.42+0.71 (+2.11%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
CSTL price history at a glance
The price history for Castle Biosciences (CSTL) on this page begins on July 22, 2019, when the stock closed at $22.99; it most recently closed at $34.42 on October 5, 2026. The highest price in this record is $107.69, reached on February 8, 2021; the latest close is 68.0% below that peak. Across the 6 complete calendar years in the table, CSTL finished higher in 3 and lower in 3. Its best year was 2020 (+103.4%) and its worst was 2022 (-45.1%).
Over roughly 7 years the share price changed +49.7%, a 5.8% compound annual price return (excluding dividends). In the last 12 months alone, CSTL has gained 45.5%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 2019
- $107.69
- Date of high
- Feb 8, 2021
- Low since 2019
- $9.26
- Date of low
- Jun 5, 2023
- 52-week high
- $44.28
- 52-week low
- $17.72
- IPO year
- 2019
- Last close
- $34.42
CSTL returns
1 week
-3.21%
1 month
+6.53%
3 months
+45.11%
6 months
+48.81%
Year to date
-11.52%
1 year
+45.48%
3 years
+172.29%
5 years
-46.98%
CSTL price return, excluding dividends.
CSTL annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 34.42 | -10.69% |
| 2025 | 38.54 | +34.71% |
| 2024 | 28.61 | +32.58% |
| 2023 | 21.58 | -8.33% |
| 2022 | 23.54 | -45.09% |
| 2021 | 42.87 | -36.16% |
| 2020 | 67.15 | +103.36% |
| 2019* | 33.02 | +43.63% |
* Partial year: the record begins after the start of 2019; return measured from the first available close.
2026 return is year to date.
CSTL daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 33.55 | 34.52 | 33.46 | 34.42 | +2.11% | |
| 32.54 | 33.76 | 32.35 | 33.71 | +2.15% | |
| 33.15 | 33.72 | 32.77 | 33.00 | -1.08% | |
| 36.65 | 37.99 | 33.10 | 33.36 | -8.98% | |
| 35.45 | 36.76 | 35.10 | 36.65 | +3.07% | |
| 35.56 | 35.92 | 34.75 | 35.56 | +0.87% | |
| 36.10 | 36.99 | 35.17 | 35.26 | -0.77% | |
| 34.90 | 36.03 | 34.14 | 35.53 | +1.86% | |
| 35.72 | 36.24 | 34.24 | 34.88 | -2.92% | |
| 35.81 | 36.27 | 35.09 | 35.93 | +0.34% | |
| 35.19 | 36.12 | 34.44 | 35.81 | +1.76% | |
| 34.88 | 35.84 | 33.90 | 35.19 | +0.89% | |
| 34.74 | 34.97 | 33.99 | 34.88 | +0.09% | |
| 35.53 | 35.53 | 34.57 | 34.85 | -0.40% | |
| 35.68 | 35.68 | 34.48 | 34.99 | -0.99% | |
| 36.54 | 36.54 | 35.29 | 35.34 | -3.92% | |
| 35.98 | 36.85 | 34.94 | 36.78 | +3.66% | |
| 35.50 | 36.82 | 35.26 | 35.48 | -0.06% | |
| 33.64 | 35.69 | 33.64 | 35.50 | +6.16% | |
| 32.30 | 33.53 | 32.16 | 33.44 | +3.43% | |
| 32.77 | 32.94 | 31.71 | 32.33 | +0.03% | |
| 31.97 | 32.70 | 31.44 | 32.32 | +0.03% | |
| 32.43 | 33.03 | 32.00 | 32.31 | -1.37% | |
| 32.57 | 33.58 | 32.28 | 32.76 | -0.46% | |
| 32.32 | 33.21 | 31.99 | 32.91 | +0.80% | |
| 33.50 | 34.00 | 32.38 | 32.65 | -2.30% | |
| 33.36 | 34.73 | 32.69 | 33.42 | -0.06% | |
| 33.00 | 34.09 | 32.89 | 33.44 | +1.24% | |
| 33.03 | 33.30 | 32.36 | 33.03 | -1.40% | |
| 34.02 | 34.28 | 32.80 | 33.50 | -2.22% | |
| 34.01 | 34.89 | 33.98 | 34.26 | +0.53% | |
| 34.80 | 34.84 | 33.62 | 34.08 | -2.63% | |
| 33.47 | 35.20 | 33.29 | 35.00 | +4.57% | |
| 33.65 | 34.54 | 31.70 | 33.47 | -2.13% | |
| 32.85 | 34.70 | 32.14 | 34.20 | +3.86% | |
| 32.41 | 34.01 | 32.41 | 32.93 | +1.89% | |
| 29.03 | 32.39 | 29.03 | 32.32 | +11.33% | |
| 29.89 | 30.13 | 28.72 | 29.03 | -3.07% | |
| 29.50 | 30.50 | 29.21 | 29.95 | +1.11% | |
| 30.93 | 31.12 | 29.58 | 29.62 | -3.04% | |
| 31.62 | 31.97 | 30.51 | 30.55 | -2.80% | |
| 32.43 | 33.00 | 31.25 | 31.43 | -2.51% | |
| 32.34 | 32.99 | 31.46 | 32.24 | -0.34% | |
| 31.86 | 33.06 | 31.24 | 32.35 | +1.00% | |
| 30.88 | 32.37 | 30.65 | 32.03 | +5.12% | |
| 30.20 | 30.75 | 29.50 | 30.47 | +0.23% | |
| 31.18 | 31.42 | 30.10 | 30.40 | -2.50% | |
| 30.18 | 31.73 | 29.99 | 31.18 | +2.60% | |
| 27.83 | 30.73 | 27.83 | 30.39 | +8.54% | |
| 28.75 | 30.81 | 27.50 | 28.00 | +4.52% | |
| 24.50 | 27.13 | 24.50 | 26.79 | +9.53% | |
| 23.93 | 25.30 | 23.73 | 24.46 | +2.39% | |
| 24.63 | 24.77 | 23.76 | 23.89 | -2.25% | |
| 25.10 | 25.12 | 23.85 | 24.44 | -0.99% | |
| 25.56 | 25.63 | 24.35 | 24.69 | -3.12% | |
| 24.53 | 25.50 | 24.53 | 25.48 | +2.70% | |
| 24.33 | 24.92 | 23.77 | 24.81 | +1.22% | |
| 23.57 | 24.69 | 23.25 | 24.51 | +2.57% | |
| 23.97 | 24.15 | 23.76 | 23.90 | -1.10% | |
| 23.79 | 24.34 | 23.59 | 24.16 | -0.29% | |
| 24.06 | 25.13 | 23.82 | 24.23 | +0.87% | |
| 23.07 | 24.03 | 22.93 | 24.02 | +3.89% | |
| 23.30 | 23.30 | 22.61 | 23.12 | +0.61% | |
| 23.67 | 23.88 | 22.46 | 22.98 | -3.12% | |
| 24.55 | 24.67 | 23.36 | 23.72 | -3.42% | |
| 23.70 | 24.80 | 23.55 | 24.56 | +3.89% | |
| 23.45 | 23.92 | 23.34 | 23.64 | -0.80% | |
| 24.36 | 24.41 | 23.48 | 23.83 | -1.57% | |
| 23.95 | 24.55 | 23.60 | 24.21 | +0.41% | |
| 24.71 | 24.98 | 24.02 | 24.11 | -2.43% | |
| 23.92 | 24.86 | 23.86 | 24.71 | +3.61% | |
| 24.14 | 24.14 | 23.36 | 23.85 | -1.93% | |
| 24.35 | 24.80 | 24.21 | 24.32 | +0.08% | |
| 22.67 | 24.34 | 22.67 | 24.30 | +6.07% | |
| 22.33 | 22.93 | 22.24 | 22.91 | +3.57% | |
| 21.42 | 22.46 | 21.40 | 22.12 | +3.46% | |
| 21.07 | 21.93 | 21.05 | 21.38 | +0.85% | |
| 21.29 | 21.47 | 20.64 | 21.20 | +0.38% | |
| 20.39 | 21.15 | 20.23 | 21.12 | +4.30% | |
| 20.68 | 20.71 | 19.86 | 20.25 | -1.03% | |
| 20.67 | 21.12 | 20.37 | 20.46 | -0.97% | |
| 20.73 | 21.02 | 20.38 | 20.66 | -0.19% | |
| 21.06 | 21.20 | 20.51 | 20.70 | -1.48% | |
| 21.07 | 21.29 | 20.53 | 21.01 | -0.33% | |
| 20.88 | 21.52 | 20.88 | 21.08 | 0.00% | |
| 20.30 | 21.09 | 20.24 | 21.08 | +4.77% | |
| 21.16 | 21.16 | 20.11 | 20.12 | -4.24% | |
| 21.57 | 21.78 | 20.99 | 21.01 | -2.73% | |
| 20.61 | 21.84 | 20.61 | 21.60 | +5.93% | |
| 19.66 | 20.74 | 19.58 | 20.39 | +3.45% | |
| 20.54 | 20.54 | 19.51 | 19.71 | -6.01% | |
| 20.98 | 21.21 | 20.45 | 20.97 | -0.52% | |
| 21.99 | 22.14 | 20.99 | 21.08 | -4.66% | |
| 21.12 | 22.18 | 21.10 | 22.11 | +4.00% | |
| 19.77 | 21.81 | 19.68 | 21.26 | +7.97% | |
| 20.12 | 20.12 | 19.55 | 19.69 | -2.28% | |
| 20.52 | 20.91 | 20.08 | 20.15 | -1.90% | |
| 19.78 | 20.65 | 19.73 | 20.54 | +2.55% | |
| 19.28 | 20.05 | 18.91 | 20.03 | +4.32% | |
| 19.42 | 19.71 | 18.82 | 19.20 | -0.62% | |
| 18.48 | 20.22 | 18.48 | 19.32 | +0.99% | |
| 18.69 | 19.61 | 18.64 | 19.13 | +1.32% | |
| 18.25 | 19.00 | 17.72 | 18.88 | +4.02% | |
| 18.51 | 18.82 | 17.81 | 18.15 | -2.58% | |
| 18.95 | 19.23 | 18.35 | 18.63 | -2.15% | |
| 19.91 | 19.98 | 18.89 | 19.04 | -3.98% | |
| 19.26 | 19.85 | 18.66 | 19.83 | +3.07% | |
| 22.66 | 22.88 | 18.31 | 19.24 | -22.26% | |
| 24.66 | 25.23 | 24.25 | 24.75 | +0.61% | |
| 25.43 | 25.50 | 24.43 | 24.60 | -3.61% | |
| 24.73 | 25.70 | 24.73 | 25.52 | +2.86% | |
| 24.53 | 25.11 | 24.15 | 24.81 | +1.31% | |
| 24.50 | 24.90 | 24.13 | 24.49 | +1.03% | |
| 24.33 | 24.35 | 23.31 | 24.24 | -1.82% | |
| 25.00 | 25.28 | 24.48 | 24.69 | -1.16% | |
| 24.45 | 25.71 | 24.39 | 24.98 | +2.13% | |
| 23.59 | 24.61 | 23.18 | 24.46 | +3.25% | |
| 24.80 | 24.80 | 23.31 | 23.69 | -5.62% | |
| 24.72 | 25.13 | 24.42 | 25.10 | +2.12% | |
| 25.19 | 25.72 | 24.37 | 24.58 | -2.31% | |
| 24.67 | 25.32 | 24.67 | 25.16 | +0.44% | |
| 25.14 | 25.37 | 24.84 | 25.05 | +2.00% | |
| 24.62 | 24.82 | 24.14 | 24.56 | -0.24% | |
| 24.37 | 25.00 | 24.37 | 24.62 | +1.03% | |
| 23.72 | 24.81 | 23.72 | 24.37 | +3.57% | |
| 22.92 | 23.58 | 22.81 | 23.53 | +1.73% | |
| 23.30 | 23.33 | 21.79 | 23.13 | -1.28% | |
| 24.83 | 25.54 | 23.33 | 23.43 | -6.99% | |
| 25.85 | 26.68 | 24.82 | 25.19 | +1.45% | |
| 24.82 | 25.26 | 24.65 | 24.83 | +0.40% | |
| 24.96 | 25.31 | 24.63 | 24.73 | -0.44% | |
| 24.41 | 25.22 | 24.09 | 24.84 | -0.84% | |
| 24.92 | 25.48 | 24.57 | 25.05 | +2.04% | |
| 23.86 | 24.86 | 23.71 | 24.55 | +4.25% | |
| 23.54 | 23.92 | 23.24 | 23.55 | +0.08% | |
| 24.60 | 24.65 | 23.44 | 23.53 | -4.74% | |
| 25.11 | 26.02 | 24.65 | 24.70 | -2.26% | |
| 25.81 | 26.19 | 25.08 | 25.27 | -0.32% | |
| 25.73 | 25.87 | 25.10 | 25.35 | -1.55% | |
| 25.81 | 26.12 | 25.29 | 25.75 | +3.00% | |
| 25.69 | 25.69 | 24.74 | 25.00 | -2.72% | |
| 25.46 | 26.16 | 25.14 | 25.70 | +0.33% | |
| 25.50 | 26.10 | 25.26 | 25.62 | -1.10% | |
| 26.05 | 26.38 | 25.64 | 25.90 | +0.27% | |
| 25.81 | 26.79 | 25.67 | 25.83 | +1.06% | |
| 25.40 | 26.13 | 25.20 | 25.56 | +0.95% | |
| 25.77 | 25.96 | 24.89 | 25.32 | -3.10% | |
| 26.41 | 26.64 | 25.82 | 26.13 | -1.77% | |
| 26.95 | 27.36 | 26.49 | 26.60 | -1.55% | |
| 26.81 | 27.03 | 25.76 | 27.02 | -0.37% | |
| 27.23 | 27.80 | 27.07 | 27.12 | -2.83% | |
| 27.67 | 28.58 | 27.17 | 27.91 | -0.92% | |
| 27.74 | 28.60 | 27.40 | 28.17 | +2.18% | |
| 27.06 | 28.03 | 26.61 | 27.57 | -1.50% | |
| 28.74 | 29.37 | 27.73 | 27.99 | -5.34% | |
| 29.87 | 30.50 | 27.22 | 29.57 | -7.25% | |
| 30.83 | 32.05 | 30.40 | 31.88 | +3.41% | |
| 30.28 | 31.11 | 29.92 | 30.83 | +2.97% | |
| 28.96 | 30.54 | 28.61 | 29.94 | +3.46% | |
| 28.77 | 29.67 | 27.80 | 28.94 | -0.92% | |
| 31.61 | 31.61 | 29.10 | 29.21 | -6.80% | |
| 33.50 | 33.50 | 31.12 | 31.34 | -6.92% | |
| 33.65 | 34.44 | 33.40 | 33.67 | +0.75% | |
| 33.13 | 34.18 | 32.70 | 33.42 | +0.81% | |
| 31.84 | 33.66 | 31.84 | 33.15 | +3.92% | |
| 32.42 | 32.83 | 31.39 | 31.90 | -1.36% | |
| 32.62 | 32.98 | 31.38 | 32.34 | -0.09% | |
| 32.40 | 33.10 | 32.25 | 32.37 | +0.43% | |
| 32.40 | 33.01 | 32.04 | 32.23 | -1.59% | |
| 32.99 | 33.31 | 31.64 | 32.75 | +1.08% | |
| 34.98 | 35.50 | 32.26 | 32.40 | -7.32% | |
| 38.85 | 39.04 | 34.54 | 34.96 | -10.22% | |
| 39.47 | 40.45 | 38.76 | 38.94 | -1.34% | |
| 39.65 | 40.88 | 39.31 | 39.47 | +0.20% | |
| 39.16 | 40.06 | 38.20 | 39.39 | +0.59% | |
| 39.51 | 39.66 | 38.43 | 39.16 | -0.89% | |
| 42.78 | 42.78 | 39.00 | 39.51 | -7.77% | |
| 43.00 | 43.24 | 42.39 | 42.84 | -0.46% | |
| 42.25 | 44.28 | 42.19 | 43.04 | +1.89% | |
| 41.94 | 42.31 | 41.10 | 42.24 | +0.21% | |
| 41.22 | 43.01 | 41.09 | 42.15 | +2.86% | |
| 41.02 | 41.86 | 40.33 | 40.98 | +0.29% | |
| 39.90 | 41.02 | 39.74 | 40.86 | +2.12% | |
| 40.75 | 41.28 | 39.92 | 40.01 | -1.82% | |
| 40.79 | 41.60 | 40.25 | 40.75 | -0.05% | |
| 39.61 | 41.09 | 39.21 | 40.77 | +2.85% | |
| 39.85 | 39.85 | 38.73 | 39.64 | -0.05% | |
| 40.80 | 41.88 | 39.06 | 39.66 | +0.81% | |
| 39.90 | 40.71 | 38.68 | 39.34 | -1.38% | |
| 40.61 | 41.02 | 39.47 | 39.89 | -1.77% | |
| 40.37 | 41.35 | 39.99 | 40.61 | +1.35% | |
| 38.91 | 40.27 | 37.29 | 40.07 | +2.74% | |
| 38.48 | 39.13 | 37.47 | 39.00 | +1.19% | |
| 39.02 | 39.16 | 37.83 | 38.54 | -0.93% | |
| 39.43 | 39.50 | 38.81 | 38.90 | -1.04% | |
| 39.39 | 39.76 | 38.75 | 39.31 | +0.10% | |
| 39.40 | 39.75 | 38.75 | 39.27 | -0.32% | |
| 39.89 | 39.97 | 39.28 | 39.40 | -1.73% | |
| 40.18 | 40.34 | 39.51 | 40.09 | -0.27% | |
| 41.05 | 41.15 | 40.01 | 40.20 | -2.88% | |
| 40.00 | 42.18 | 39.89 | 41.39 | +4.94% | |
| 39.46 | 39.87 | 39.15 | 39.44 | -0.40% | |
| 39.73 | 40.23 | 39.12 | 39.60 | -0.15% | |
| 39.05 | 40.10 | 38.16 | 39.66 | +1.56% | |
| 38.46 | 39.11 | 37.76 | 39.05 | +0.44% | |
| 39.05 | 39.53 | 38.24 | 38.88 | +0.65% | |
| 38.93 | 39.19 | 38.06 | 38.63 | +1.74% | |
| 37.96 | 38.20 | 36.63 | 37.97 | -0.13% | |
| 38.25 | 38.59 | 37.90 | 38.02 | -0.60% | |
| 38.20 | 38.88 | 37.83 | 38.25 | +0.39% | |
| 39.19 | 39.19 | 37.93 | 38.10 | -1.40% | |
| 39.54 | 40.10 | 38.38 | 38.64 | -2.47% | |
| 39.41 | 40.54 | 38.73 | 39.62 | +0.53% | |
| 39.10 | 40.06 | 38.69 | 39.41 | +0.79% | |
| 39.17 | 39.58 | 38.98 | 39.10 | -0.05% | |
| 39.76 | 39.97 | 38.64 | 39.12 | -2.08% | |
| 40.00 | 40.61 | 39.34 | 39.95 | +0.03% | |
| 39.93 | 40.51 | 39.38 | 39.94 | +0.03% | |
| 38.61 | 40.23 | 38.17 | 39.93 | +3.74% | |
| 37.94 | 39.62 | 37.58 | 38.49 | +1.61% | |
| 35.70 | 38.15 | 35.48 | 37.88 | +6.05% | |
| 35.09 | 36.60 | 34.92 | 35.72 | +3.09% | |
| 33.64 | 35.13 | 33.03 | 34.65 | +3.28% | |
| 33.95 | 34.38 | 33.38 | 33.55 | -1.18% | |
| 33.61 | 34.37 | 33.04 | 33.95 | +1.49% | |
| 33.02 | 33.97 | 32.96 | 33.45 | -1.96% | |
| 34.82 | 35.00 | 33.98 | 34.12 | -2.01% | |
| 34.72 | 35.48 | 34.41 | 34.82 | -0.43% | |
| 34.64 | 35.49 | 34.34 | 34.97 | +0.66% | |
| 33.11 | 34.83 | 32.51 | 34.74 | +5.15% | |
| 33.69 | 34.13 | 32.72 | 33.04 | -1.52% | |
| 33.17 | 33.97 | 33.06 | 33.55 | -0.06% | |
| 31.56 | 34.36 | 31.56 | 33.57 | +6.13% | |
| 26.93 | 31.84 | 26.01 | 31.63 | +21.70% | |
| 25.50 | 26.97 | 25.29 | 25.99 | +1.92% | |
| 24.17 | 25.62 | 23.81 | 25.50 | +5.33% | |
| 23.73 | 24.43 | 23.73 | 24.21 | +1.98% | |
| 24.08 | 24.64 | 23.47 | 23.74 | -1.70% | |
| 24.05 | 24.27 | 23.31 | 24.15 | +0.79% | |
| 24.73 | 24.77 | 23.86 | 23.96 | -2.24% | |
| 24.39 | 24.86 | 24.23 | 24.51 | +1.36% | |
| 23.66 | 24.45 | 23.47 | 24.18 | +1.85% | |
| 23.53 | 23.85 | 23.40 | 23.74 | +1.45% | |
| 23.28 | 23.52 | 22.70 | 23.40 | +1.69% | |
| 22.49 | 23.21 | 22.24 | 23.01 | +3.93% | |
| 22.52 | 22.74 | 22.10 | 22.14 | -1.73% | |
| 22.75 | 23.19 | 22.31 | 22.53 | +0.09% | |
| 22.38 | 22.82 | 22.11 | 22.51 | +0.67% | |
| 22.57 | 22.79 | 22.23 | 22.36 | -1.97% | |
| 23.43 | 23.94 | 22.67 | 22.81 | -1.17% | |
| 23.82 | 23.82 | 22.68 | 23.08 | -2.45% | |
| 23.54 | 24.00 | 23.35 | 23.66 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the CSTL chart for longer ranges.