price
CS
NASDAQ · CSTL
Castle Biosciences, Inc.
Healthcare · Medical - Diagnostics & Research
$35.50
Up+$0.48 (+1.34%)
Updated Sep 16, 2026, 5:53 PM
SID Score
5.9/10
Composite research score
Smart Money
—
Institutional and insider signal
- Market cap
- 1.11B
- P/E ratio
- -115.98
- Dividend yield
- 0.00%
- 52-week range
- $17.72 – $35.69
- Volume
- 519.95K
- Avg. volume
- 400.7K
Price performance
CSTL price history
1M range · 20 trading sessions · Daily adjusted prices
CSTL closed at $35.50 after 20 trading sessions, up 22.29% for the selected period.
- Last close
- $35.50
- Period change
- +22.29%
- Period low
- $29.03
- Period high
- $35.50
Daily close
View OHLC price history
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Sep 15, 2026 | $33.64 | $35.685 | $33.64 | $35.50 | 519.95K |
| Sep 14, 2026 | $32.30 | $33.53 | $32.16 | $33.44 | 165.4K |
| Sep 11, 2026 | $32.77 | $32.94 | $31.71 | $32.33 | 224.2K |
| Sep 10, 2026 | $31.97 | $32.70 | $31.44 | $32.32 | 237.83K |
| Sep 9, 2026 | $32.43 | $33.03 | $32.00 | $32.31 | 194.56K |
| Sep 8, 2026 | $32.57 | $33.58 | $32.28 | $32.76 | 217.02K |
| Sep 4, 2026 | $32.32 | $33.21 | $31.985 | $32.91 | 187.73K |
| Sep 3, 2026 | $33.50 | $34.00 | $32.38 | $32.65 | 268.01K |
| Sep 2, 2026 | $33.36 | $34.73 | $32.69 | $33.42 | 200.27K |
| Sep 1, 2026 | $33.00 | $34.09 | $32.89 | $33.44 | 396.18K |
| Aug 31, 2026 | $33.03 | $33.295 | $32.36 | $33.03 | 258.01K |
| Aug 28, 2026 | $34.02 | $34.275 | $32.80 | $33.50 | 372.59K |
| Aug 27, 2026 | $34.01 | $34.89 | $33.982 | $34.26 | 251.21K |
| Aug 26, 2026 | $34.80 | $34.84 | $33.62 | $34.08 | 456.26K |
| Aug 25, 2026 | $33.47 | $35.20 | $33.29 | $35.00 | 483.37K |
| Aug 24, 2026 | $33.65 | $34.54 | $31.695 | $33.47 | 357.67K |
| Aug 21, 2026 | $32.85 | $34.70 | $32.14 | $34.20 | 573.47K |
| Aug 20, 2026 | $32.41 | $34.01 | $32.41 | $32.93 | 322.94K |
| Aug 19, 2026 | $29.03 | $32.39 | $29.03 | $32.32 | 451.92K |
| Aug 18, 2026 | $29.89 | $30.125 | $28.72 | $29.03 | 596.61K |
Latest CSTL news
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