NASDAQ · CSTL

Castle Biosciences, Inc.

Healthcare · Medical - Diagnostics & Research

$34.20

Up+$1.27 (+3.86%)

Updated Aug 22, 2026, 6:33 PM

SID Score

5.5/10

Composite research score

Smart Money

—

Institutional and insider signal

Price performance

CSTL price history

1M range · 21 trading sessions · Daily adjusted prices

Daily close

View OHLC price history

CSTL OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
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
Aug 17, 2026	$29.50	$30.50	$29.21	$29.95	225.81K
Aug 14, 2026	$30.93	$31.115	$29.58	$29.62	264.21K
Aug 13, 2026	$31.62	$31.97	$30.51	$30.55	362.23K
Aug 12, 2026	$32.43	$33.00	$31.25	$31.43	436K
Aug 11, 2026	$32.34	$32.99	$31.4642	$32.24	313.47K
Aug 10, 2026	$31.86	$33.06	$31.24	$32.35	400.77K
Aug 7, 2026	$30.88	$32.365	$30.6501	$32.03	241.82K
Aug 6, 2026	$30.20	$30.75	$29.50	$30.47	833.43K
Aug 5, 2026	$31.18	$31.42	$30.10	$30.40	520.2K
Aug 4, 2026	$30.18	$31.73	$29.99	$31.18	675.3K
Aug 3, 2026	$27.83	$30.725	$27.83	$30.39	777.61K
Jul 31, 2026	$28.75	$30.81	$27.50	$28.00	1.76M
Jul 30, 2026	$24.50	$27.13	$24.50	$26.79	716.33K
Jul 29, 2026	$23.93	$25.30	$23.73	$24.46	340.08K
Jul 28, 2026	$24.63	$24.77	$23.76	$23.89	366.21K
Jul 27, 2026	$25.10	$25.115	$23.85	$24.44	291.64K
Jul 24, 2026	$25.56	$25.625	$24.35	$24.685	408.99K