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US · CSTL

Castle Biosciences, Inc.

Programmatic access: InvestorsCraft Valuation API · catalog

Sector
Healthcare · Medical - Diagnostics & Research
Headquarters
Friendswood, TX 77546

Price · as of 2026-09-04

$32.91

Market cap 978.5M

Price history

Weekly OHLC price history for CSTL, USD per share
WeekOpenHighLowCloseVolume
Jul 22, 2019 – Jul 26, 2019$20.00$24.75$17.11$22.990
Jul 29, 2019 – Aug 2, 2019$22.97$24.52$19.64$21.810
Aug 5, 2019 – Aug 9, 2019$21.67$22.16$19.05$21.510
Aug 12, 2019 – Aug 16, 2019$21.45$21.91$19.57$20.250
Aug 19, 2019 – Aug 23, 2019$20.40$24.00$18.55$23.500
Aug 26, 2019 – Aug 30, 2019$23.76$28.05$23.20$27.920
Sep 2, 2019 – Sep 6, 2019$28.13$28.50$24.52$25.410
Sep 9, 2019 – Sep 13, 2019$25.39$25.39$20.98$22.030
Sep 16, 2019 – Sep 20, 2019$21.78$24.16$20.26$23.000
Sep 23, 2019 – Sep 27, 2019$22.72$23.97$17.93$18.450
Sep 30, 2019 – Oct 4, 2019$18.51$20.00$16.78$19.000
Oct 7, 2019 – Oct 11, 2019$19.07$20.11$17.79$19.670
Oct 14, 2019 – Oct 18, 2019$19.71$20.38$18.23$18.740
Oct 21, 2019 – Oct 25, 2019$19.02$19.60$15.26$18.110
Oct 28, 2019 – Nov 1, 2019$18.12$23.98$17.35$22.770
Nov 4, 2019 – Nov 8, 2019$22.80$22.90$20.98$22.080
Nov 11, 2019 – Nov 15, 2019$21.57$30.27$21.34$28.760
Nov 18, 2019 – Nov 22, 2019$29.15$29.75$25.73$26.790
Nov 25, 2019 – Nov 29, 2019$26.45$28.05$25.79$26.930
Dec 2, 2019 – Dec 6, 2019$26.95$31.16$25.73$30.320
Dec 9, 2019 – Dec 13, 2019$30.41$30.60$25.80$29.500
Dec 16, 2019 – Dec 20, 2019$29.50$29.84$24.81$29.320
Dec 23, 2019 – Dec 27, 2019$29.50$39.77$28.14$33.990
Dec 30, 2019 – Jan 3, 2020$34.93$37.50$32.35$33.020
Jan 6, 2020 – Jan 10, 2020$32.51$36.39$32.40$33.610
Jan 13, 2020 – Jan 17, 2020$33.88$34.61$30.30$32.390
Jan 20, 2020 – Jan 24, 2020$32.20$32.97$29.55$29.890
Jan 27, 2020 – Jan 31, 2020$29.03$31.17$29.03$30.840
Feb 3, 2020 – Feb 7, 2020$30.85$32.00$29.20$30.980
Feb 10, 2020 – Feb 14, 2020$30.99$32.37$26.39$31.800
Feb 17, 2020 – Feb 21, 2020$31.66$33.50$31.00$32.410
Feb 24, 2020 – Feb 28, 2020$31.83$32.55$25.92$29.940
Mar 2, 2020 – Mar 6, 2020$30.19$32.89$28.71$32.190
Mar 9, 2020 – Mar 13, 2020$30.87$33.37$22.25$24.070
Mar 16, 2020 – Mar 20, 2020$22.13$29.79$21.01$28.100
Mar 23, 2020 – Mar 27, 2020$28.04$31.39$24.51$28.270
Mar 30, 2020 – Apr 3, 2020$28.85$30.71$25.07$27.350
Apr 6, 2020 – Apr 9, 2020$28.46$31.85$27.50$28.050
Apr 13, 2020 – Apr 17, 2020$27.97$31.85$27.42$29.600
Apr 20, 2020 – Apr 24, 2020$29.19$31.51$27.67$29.450
Apr 27, 2020 – May 1, 2020$29.50$31.75$27.50$28.340
May 4, 2020 – May 8, 2020$28.00$32.24$26.13$31.500
May 11, 2020 – May 15, 2020$30.94$37.99$30.70$37.450
May 18, 2020 – May 22, 2020$38.00$39.60$35.00$37.930
May 25, 2020 – May 29, 2020$38.23$39.79$34.86$38.430
Jun 1, 2020 – Jun 5, 2020$38.31$39.21$36.00$37.690
Jun 8, 2020 – Jun 12, 2020$37.88$39.01$35.78$37.020
Jun 15, 2020 – Jun 19, 2020$36.72$44.53$36.07$42.380
Jun 22, 2020 – Jun 26, 2020$42.38$43.62$34.72$35.090
Jun 29, 2020 – Jul 2, 2020$35.24$39.86$35.11$38.470
Jul 6, 2020 – Jul 10, 2020$38.64$44.48$38.17$41.750
Jul 13, 2020 – Jul 17, 2020$41.71$45.62$40.18$42.990
Jul 20, 2020 – Jul 24, 2020$43.37$43.85$37.71$39.040
Jul 27, 2020 – Jul 31, 2020$39.55$40.45$37.72$38.720
Aug 3, 2020 – Aug 7, 2020$38.84$42.40$36.15$41.800
Aug 10, 2020 – Aug 14, 2020$41.82$44.96$38.41$41.320
Aug 17, 2020 – Aug 21, 2020$41.53$46.23$40.72$45.780
Aug 24, 2020 – Aug 28, 2020$45.97$46.50$44.79$45.560
Aug 31, 2020 – Sep 4, 2020$45.49$49.00$43.79$48.050
Sep 7, 2020 – Sep 11, 2020$48.07$52.32$45.52$48.600
Sep 14, 2020 – Sep 18, 2020$49.41$51.44$46.11$51.040
Sep 21, 2020 – Sep 25, 2020$49.65$52.41$48.56$49.620
Sep 28, 2020 – Oct 2, 2020$50.80$52.85$49.68$51.430
Oct 5, 2020 – Oct 9, 2020$51.64$55.06$51.47$54.860
Oct 12, 2020 – Oct 16, 2020$55.31$55.31$49.75$49.970
Oct 19, 2020 – Oct 23, 2020$50.10$52.36$47.01$51.840
Oct 26, 2020 – Oct 30, 2020$51.29$52.59$45.50$46.430
Nov 2, 2020 – Nov 6, 2020$47.17$53.37$43.79$51.700
Nov 9, 2020 – Nov 13, 2020$50.42$53.10$44.47$50.360
Nov 16, 2020 – Nov 20, 2020$51.00$51.49$45.15$48.080
Nov 23, 2020 – Nov 27, 2020$47.88$48.82$43.37$44.470
Nov 30, 2020 – Dec 4, 2020$44.98$52.05$44.26$52.000
Dec 7, 2020 – Dec 11, 2020$53.00$62.54$51.70$59.740
Dec 14, 2020 – Dec 18, 2020$60.26$70.50$58.17$62.330
Dec 21, 2020 – Dec 24, 2020$62.29$78.39$60.42$71.310
Dec 28, 2020 – Dec 31, 2020$72.11$74.86$64.07$67.150
Jan 4, 2021 – Jan 8, 2021$68.93$80.12$66.26$79.610
Jan 11, 2021 – Jan 15, 2021$78.60$79.89$71.17$74.140
Jan 18, 2021 – Jan 22, 2021$75.47$84.00$75.47$79.170
Jan 25, 2021 – Jan 29, 2021$79.16$81.18$63.69$66.830
Feb 1, 2021 – Feb 5, 2021$68.29$92.94$66.91$92.790
Feb 8, 2021 – Feb 12, 2021$94.81$107.69$89.52$95.540
Feb 15, 2021 – Feb 19, 2021$96.94$99.00$83.06$90.740
Feb 22, 2021 – Feb 26, 2021$89.99$92.31$70.61$76.080
Mar 1, 2021 – Mar 5, 2021$76.86$84.11$61.04$68.980
Mar 8, 2021 – Mar 12, 2021$68.61$71.43$61.27$64.190
Mar 15, 2021 – Mar 19, 2021$64.25$67.46$60.35$66.530
Mar 22, 2021 – Mar 26, 2021$66.90$67.58$58.60$59.970
Mar 29, 2021 – Apr 1, 2021$59.19$71.35$56.74$71.080
Apr 5, 2021 – Apr 9, 2021$72.44$75.93$67.43$69.510
Apr 12, 2021 – Apr 16, 2021$68.74$71.97$65.22$65.510
Apr 19, 2021 – Apr 23, 2021$64.73$67.99$58.77$67.580
Apr 26, 2021 – Apr 30, 2021$68.12$72.23$67.05$69.030
May 3, 2021 – May 7, 2021$70.26$70.57$55.80$60.320
May 10, 2021 – May 14, 2021$60.00$60.25$48.01$55.170
May 17, 2021 – May 21, 2021$55.07$61.00$53.58$57.670
May 24, 2021 – May 28, 2021$58.31$62.38$57.28$59.930
May 31, 2021 – Jun 4, 2021$60.50$63.42$56.59$63.300
Jun 7, 2021 – Jun 11, 2021$62.71$74.41$62.52$71.890
Jun 14, 2021 – Jun 18, 2021$72.61$76.50$70.07$73.460
Jun 21, 2021 – Jun 25, 2021$73.60$76.60$71.20$73.380
Jun 28, 2021 – Jul 2, 2021$74.92$78.92$69.65$70.940
Jul 5, 2021 – Jul 9, 2021$71.16$74.30$66.42$73.390
Jul 12, 2021 – Jul 16, 2021$72.02$74.83$63.47$64.990
Jul 19, 2021 – Jul 23, 2021$63.98$69.34$63.75$68.800
Jul 26, 2021 – Jul 30, 2021$68.95$70.65$62.11$69.850
Aug 2, 2021 – Aug 6, 2021$70.21$74.95$68.02$71.820
Aug 9, 2021 – Aug 13, 2021$73.73$78.27$62.13$64.440
Aug 16, 2021 – Aug 20, 2021$63.97$66.36$57.64$66.210
Aug 23, 2021 – Aug 27, 2021$66.95$75.12$66.80$74.290
Aug 30, 2021 – Sep 3, 2021$74.83$77.75$73.49$76.790
Sep 6, 2021 – Sep 10, 2021$76.91$78.58$74.24$74.480
Sep 13, 2021 – Sep 17, 2021$74.86$78.47$70.15$77.320
Sep 20, 2021 – Sep 24, 2021$74.99$76.90$71.58$72.440
Sep 27, 2021 – Oct 1, 2021$72.03$72.03$61.80$65.340
Oct 4, 2021 – Oct 8, 2021$64.99$66.03$59.49$61.300
Oct 11, 2021 – Oct 15, 2021$61.24$66.49$60.28$63.580
Oct 18, 2021 – Oct 22, 2021$63.50$68.65$61.23$62.730
Oct 25, 2021 – Oct 29, 2021$62.98$64.94$60.24$62.350
Nov 1, 2021 – Nov 5, 2021$63.01$65.71$57.94$59.550
Nov 8, 2021 – Nov 12, 2021$60.00$62.45$51.30$51.680
Nov 15, 2021 – Nov 19, 2021$51.59$54.62$47.28$47.500
Nov 22, 2021 – Nov 26, 2021$47.55$47.55$42.50$43.120
Nov 29, 2021 – Dec 3, 2021$44.16$44.93$39.34$41.430
Dec 6, 2021 – Dec 10, 2021$41.47$46.92$39.40$40.520
Dec 13, 2021 – Dec 17, 2021$40.00$42.62$37.99$42.280
Dec 20, 2021 – Dec 23, 2021$40.81$43.61$40.21$42.580
Dec 27, 2021 – Dec 31, 2021$42.09$44.86$39.63$42.870
Jan 3, 2022 – Jan 7, 2022$42.29$46.00$38.21$39.090
Jan 10, 2022 – Jan 14, 2022$39.43$40.99$35.25$36.690
Jan 17, 2022 – Jan 21, 2022$35.73$36.18$32.96$33.600
Jan 24, 2022 – Jan 28, 2022$32.55$38.75$31.46$38.410
Jan 31, 2022 – Feb 4, 2022$37.84$44.45$37.84$42.930
Feb 7, 2022 – Feb 11, 2022$42.85$47.20$42.08$43.460
Feb 14, 2022 – Feb 18, 2022$43.29$45.39$39.29$39.780
Feb 21, 2022 – Feb 25, 2022$39.18$44.84$37.13$44.690
Feb 28, 2022 – Mar 4, 2022$44.27$48.40$41.87$42.260
Mar 7, 2022 – Mar 11, 2022$42.12$44.76$39.82$39.950
Mar 14, 2022 – Mar 18, 2022$39.79$46.50$36.00$45.120
Mar 21, 2022 – Mar 25, 2022$44.85$46.20$41.58$42.370
Mar 28, 2022 – Apr 1, 2022$42.42$46.95$41.08$45.980
Apr 4, 2022 – Apr 8, 2022$46.35$47.27$32.59$32.750
Apr 11, 2022 – Apr 14, 2022$32.23$33.00$25.70$25.940
Apr 18, 2022 – Apr 22, 2022$25.90$25.90$22.40$22.910
Apr 25, 2022 – Apr 29, 2022$22.73$23.87$21.73$22.340
May 2, 2022 – May 6, 2022$22.34$25.08$20.00$21.150
May 9, 2022 – May 13, 2022$20.73$21.27$17.01$19.710
May 16, 2022 – May 20, 2022$19.54$21.76$18.37$21.650
May 23, 2022 – May 27, 2022$21.66$22.73$19.24$22.680
May 30, 2022 – Jun 3, 2022$22.57$23.00$18.15$19.100
Jun 6, 2022 – Jun 10, 2022$19.51$22.12$19.38$19.430
Jun 13, 2022 – Jun 17, 2022$18.44$18.83$15.58$16.000
Jun 20, 2022 – Jun 24, 2022$16.94$24.09$15.95$23.830
Jun 27, 2022 – Jul 1, 2022$24.07$24.07$21.78$22.510
Jul 4, 2022 – Jul 8, 2022$22.18$26.33$21.98$25.800
Jul 11, 2022 – Jul 15, 2022$25.40$26.79$23.70$24.730
Jul 18, 2022 – Jul 22, 2022$25.18$27.82$23.16$25.440
Jul 25, 2022 – Jul 29, 2022$25.83$28.11$25.00$27.960
Aug 1, 2022 – Aug 5, 2022$27.55$31.31$26.69$30.560
Aug 8, 2022 – Aug 12, 2022$30.78$36.10$28.01$33.940
Aug 15, 2022 – Aug 19, 2022$33.71$34.06$30.07$31.880
Aug 22, 2022 – Aug 26, 2022$31.09$32.93$29.88$30.940
Aug 29, 2022 – Sep 2, 2022$30.24$30.40$27.44$27.990
Sep 5, 2022 – Sep 9, 2022$28.13$29.43$26.16$29.330
Sep 12, 2022 – Sep 16, 2022$29.56$30.00$26.54$27.150
Sep 19, 2022 – Sep 23, 2022$26.69$28.60$24.30$24.650
Sep 26, 2022 – Sep 30, 2022$24.54$27.30$23.28$26.080
Oct 3, 2022 – Oct 7, 2022$26.56$30.08$25.76$26.620
Oct 10, 2022 – Oct 14, 2022$26.33$26.75$21.94$22.020
Oct 17, 2022 – Oct 21, 2022$23.03$25.00$19.95$21.490
Oct 24, 2022 – Oct 28, 2022$21.83$23.52$19.87$23.430
Oct 31, 2022 – Nov 4, 2022$23.23$26.68$21.50$21.940
Nov 7, 2022 – Nov 11, 2022$22.16$23.07$17.83$22.410
Nov 14, 2022 – Nov 18, 2022$22.26$23.79$19.72$21.000
Nov 21, 2022 – Nov 25, 2022$20.83$21.58$19.74$21.270
Nov 28, 2022 – Dec 2, 2022$20.96$25.87$20.33$25.710
Dec 5, 2022 – Dec 9, 2022$25.57$25.57$22.25$22.320
Dec 12, 2022 – Dec 16, 2022$22.40$25.54$21.64$24.070
Dec 19, 2022 – Dec 23, 2022$24.00$24.78$21.67$23.230
Dec 26, 2022 – Dec 30, 2022$23.23$23.65$20.95$23.540
Jan 2, 2023 – Jan 6, 2023$23.67$24.23$22.06$22.800
Jan 9, 2023 – Jan 13, 2023$23.16$27.37$22.60$27.210
Jan 16, 2023 – Jan 20, 2023$27.05$28.10$25.70$26.640
Jan 23, 2023 – Jan 27, 2023$26.56$27.57$25.38$26.000
Jan 30, 2023 – Feb 3, 2023$25.72$29.59$25.04$28.300
Feb 6, 2023 – Feb 10, 2023$28.20$28.63$25.67$26.470
Feb 13, 2023 – Feb 17, 2023$26.71$27.17$25.44$26.000
Feb 20, 2023 – Feb 24, 2023$25.42$25.42$23.00$24.360
Feb 27, 2023 – Mar 3, 2023$24.64$25.99$21.73$24.680
Mar 6, 2023 – Mar 10, 2023$24.73$25.12$19.40$19.470
Mar 13, 2023 – Mar 17, 2023$19.15$22.92$18.79$21.400
Mar 20, 2023 – Mar 24, 2023$21.59$22.87$20.87$22.510
Mar 27, 2023 – Mar 31, 2023$22.90$23.21$21.98$22.720
Apr 3, 2023 – Apr 6, 2023$22.60$22.71$21.83$22.260
Apr 10, 2023 – Apr 14, 2023$22.01$24.25$21.71$22.580
Apr 17, 2023 – Apr 21, 2023$22.50$24.42$22.30$24.330
Apr 24, 2023 – Apr 28, 2023$24.32$24.37$21.70$22.630
May 1, 2023 – May 5, 2023$22.68$24.23$20.56$22.250
May 8, 2023 – May 12, 2023$22.04$23.91$21.91$22.870
May 15, 2023 – May 19, 2023$22.95$24.75$22.35$24.610
May 22, 2023 – May 26, 2023$24.48$26.40$24.20$26.000
May 29, 2023 – Jun 2, 2023$26.01$26.70$18.32$22.730
Jun 5, 2023 – Jun 9, 2023$17.70$17.87$9.26$14.660
Jun 12, 2023 – Jun 16, 2023$14.64$15.20$12.85$13.180
Jun 19, 2023 – Jun 23, 2023$13.03$13.59$12.55$12.720
Jun 26, 2023 – Jun 30, 2023$12.66$13.90$12.50$13.720
Jul 3, 2023 – Jul 7, 2023$13.59$20.96$13.18$20.300
Jul 10, 2023 – Jul 14, 2023$20.42$20.75$15.55$15.950
Jul 17, 2023 – Jul 21, 2023$15.95$17.75$15.65$16.730
Jul 24, 2023 – Jul 28, 2023$16.70$17.04$13.95$16.830
Jul 31, 2023 – Aug 4, 2023$16.85$20.39$15.78$18.500
Aug 7, 2023 – Aug 11, 2023$18.56$18.59$16.96$17.500
Aug 14, 2023 – Aug 18, 2023$17.32$19.00$16.99$17.560
Aug 21, 2023 – Aug 25, 2023$17.51$19.08$17.32$18.630
Aug 28, 2023 – Sep 1, 2023$18.80$20.33$18.61$19.660
Sep 4, 2023 – Sep 8, 2023$19.57$19.57$17.94$18.340
Sep 11, 2023 – Sep 15, 2023$18.59$19.20$17.02$17.300
Sep 18, 2023 – Sep 22, 2023$17.26$17.37$16.37$16.520
Sep 25, 2023 – Sep 29, 2023$16.66$17.69$15.94$16.890
Oct 2, 2023 – Oct 6, 2023$16.84$16.84$14.37$14.450
Oct 9, 2023 – Oct 13, 2023$14.28$14.89$12.07$12.380
Oct 16, 2023 – Oct 20, 2023$12.44$13.77$12.39$12.800
Oct 23, 2023 – Oct 27, 2023$12.80$13.25$12.23$13.060
Oct 30, 2023 – Nov 3, 2023$13.24$19.36$12.95$17.980
Nov 6, 2023 – Nov 10, 2023$18.15$18.46$16.20$17.180
Nov 13, 2023 – Nov 17, 2023$17.00$20.00$16.51$19.640
Nov 20, 2023 – Nov 24, 2023$19.50$20.26$19.01$19.880
Nov 27, 2023 – Dec 1, 2023$19.73$20.35$19.04$19.970
Dec 4, 2023 – Dec 8, 2023$19.97$20.51$19.00$20.170
Dec 11, 2023 – Dec 15, 2023$20.03$21.87$19.18$20.070
Dec 18, 2023 – Dec 22, 2023$20.04$22.25$20.01$21.630
Dec 25, 2023 – Dec 29, 2023$21.63$22.66$21.57$21.580
Jan 1, 2024 – Jan 5, 2024$21.17$22.78$19.94$21.000
Jan 8, 2024 – Jan 12, 2024$21.17$22.08$20.01$20.030
Jan 15, 2024 – Jan 19, 2024$19.71$20.61$18.56$19.160
Jan 22, 2024 – Jan 26, 2024$19.49$22.01$19.32$21.730
Jan 29, 2024 – Feb 2, 2024$21.72$24.73$21.72$23.410
Feb 5, 2024 – Feb 9, 2024$23.20$24.49$22.27$23.920
Feb 12, 2024 – Feb 16, 2024$23.84$25.36$22.26$25.300
Feb 19, 2024 – Feb 23, 2024$24.80$25.35$23.60$23.870
Feb 26, 2024 – Mar 1, 2024$23.52$25.60$17.42$19.940
Mar 4, 2024 – Mar 8, 2024$20.16$22.95$19.41$20.790
Mar 11, 2024 – Mar 15, 2024$20.56$20.88$18.68$18.850
Mar 18, 2024 – Mar 22, 2024$18.85$21.33$18.53$20.270
Mar 25, 2024 – Mar 28, 2024$20.12$22.52$20.12$22.150
Apr 1, 2024 – Apr 5, 2024$22.22$22.67$20.69$20.820
Apr 8, 2024 – Apr 12, 2024$20.98$21.58$19.78$20.060
Apr 15, 2024 – Apr 19, 2024$20.04$20.09$18.50$19.310
Apr 22, 2024 – Apr 26, 2024$19.33$20.77$18.76$20.340
Apr 29, 2024 – May 3, 2024$20.50$25.91$20.50$24.330
May 6, 2024 – May 10, 2024$24.43$25.23$23.16$24.240
May 13, 2024 – May 17, 2024$24.54$25.10$23.78$24.240
May 20, 2024 – May 24, 2024$24.20$25.15$23.28$24.370
May 27, 2024 – May 31, 2024$24.79$24.95$23.24$23.260
Jun 3, 2024 – Jun 7, 2024$23.69$24.15$22.46$23.150
Jun 10, 2024 – Jun 14, 2024$22.88$23.96$21.45$22.920
Jun 17, 2024 – Jun 21, 2024$22.90$23.37$20.76$21.390
Jun 24, 2024 – Jun 28, 2024$21.60$22.18$20.78$21.770
Jul 1, 2024 – Jul 5, 2024$21.64$21.75$16.97$17.400
Jul 8, 2024 – Jul 12, 2024$17.65$19.48$17.29$18.550
Jul 15, 2024 – Jul 19, 2024$18.87$20.23$18.43$19.920
Jul 22, 2024 – Jul 26, 2024$19.78$21.08$19.16$21.060
Jul 29, 2024 – Aug 2, 2024$21.10$24.73$20.99$22.280
Aug 5, 2024 – Aug 9, 2024$21.71$28.22$20.13$26.830
Aug 12, 2024 – Aug 16, 2024$26.68$28.11$26.30$26.990
Aug 19, 2024 – Aug 23, 2024$27.00$30.46$26.44$29.570
Aug 26, 2024 – Aug 30, 2024$29.80$30.50$28.50$29.670
Sep 2, 2024 – Sep 6, 2024$29.70$30.30$28.40$29.320
Sep 9, 2024 – Sep 13, 2024$29.39$31.90$28.56$31.180
Sep 16, 2024 – Sep 20, 2024$31.10$32.53$29.99$31.470
Sep 23, 2024 – Sep 27, 2024$31.59$31.86$27.81$27.860
Sep 30, 2024 – Oct 4, 2024$27.86$29.35$27.56$29.350
Oct 7, 2024 – Oct 11, 2024$29.27$31.34$27.65$31.310
Oct 14, 2024 – Oct 18, 2024$31.94$34.50$31.43$32.640
Oct 21, 2024 – Oct 25, 2024$32.61$33.30$31.19$31.370
Oct 28, 2024 – Nov 1, 2024$31.91$35.42$31.81$33.150
Nov 4, 2024 – Nov 8, 2024$32.56$35.84$30.95$33.290
Nov 11, 2024 – Nov 15, 2024$33.29$34.64$28.02$28.100
Nov 18, 2024 – Nov 22, 2024$28.09$30.35$27.24$29.810
Nov 25, 2024 – Nov 29, 2024$30.02$31.23$29.21$30.280
Dec 2, 2024 – Dec 6, 2024$30.19$32.60$29.06$31.190
Dec 9, 2024 – Dec 13, 2024$31.18$32.57$27.99$28.870
Dec 16, 2024 – Dec 20, 2024$28.93$29.63$26.30$27.530
Dec 23, 2024 – Dec 27, 2024$27.46$28.08$26.57$26.830
Dec 30, 2024 – Jan 3, 2025$26.65$29.07$25.82$28.610
Jan 6, 2025 – Jan 10, 2025$28.61$32.74$27.61$30.250
Jan 13, 2025 – Jan 17, 2025$29.90$29.90$23.95$24.940
Jan 20, 2025 – Jan 24, 2025$25.45$27.51$25.18$26.440
Jan 27, 2025 – Jan 31, 2025$26.30$28.65$26.24$28.270
Feb 3, 2025 – Feb 7, 2025$27.43$28.90$27.28$27.600
Feb 10, 2025 – Feb 14, 2025$27.62$28.48$26.65$27.320
Feb 17, 2025 – Feb 21, 2025$27.32$27.80$25.72$25.750
Feb 24, 2025 – Feb 28, 2025$25.72$26.64$21.19$21.680
Mar 3, 2025 – Mar 7, 2025$21.76$22.58$19.56$20.210
Mar 10, 2025 – Mar 14, 2025$19.72$20.49$18.70$19.290
Mar 17, 2025 – Mar 21, 2025$19.43$21.01$19.12$20.520
Mar 24, 2025 – Mar 28, 2025$20.83$21.14$19.58$19.940
Mar 31, 2025 – Apr 4, 2025$19.42$20.39$17.90$18.570
Apr 7, 2025 – Apr 11, 2025$17.58$20.77$17.49$19.700
Apr 14, 2025 – Apr 17, 2025$20.02$21.81$19.50$21.510
Apr 21, 2025 – Apr 25, 2025$21.41$22.82$20.26$20.630
Apr 28, 2025 – May 2, 2025$20.66$20.82$19.05$19.350
May 5, 2025 – May 9, 2025$19.40$19.67$15.70$16.790
May 12, 2025 – May 16, 2025$17.25$17.49$15.84$16.750
May 19, 2025 – May 23, 2025$16.49$16.66$15.66$16.100
May 26, 2025 – May 30, 2025$16.34$16.43$15.45$15.970
Jun 2, 2025 – Jun 6, 2025$15.92$17.67$15.57$17.600
Jun 9, 2025 – Jun 13, 2025$17.74$18.99$17.43$18.750
Jun 16, 2025 – Jun 20, 2025$18.76$19.38$17.89$18.520
Jun 23, 2025 – Jun 27, 2025$18.37$20.55$18.18$20.350
Jun 30, 2025 – Jul 3, 2025$20.34$20.63$20.00$20.300
Jul 7, 2025 – Jul 11, 2025$20.21$20.32$19.21$19.660
Jul 14, 2025 – Jul 18, 2025$19.67$19.82$16.41$16.540
Jul 21, 2025 – Jul 25, 2025$16.54$17.31$16.00$16.070
Jul 28, 2025 – Aug 1, 2025$16.32$16.67$14.61$14.650
Aug 4, 2025 – Aug 8, 2025$14.75$21.33$14.59$19.360
Aug 11, 2025 – Aug 15, 2025$19.47$20.21$18.96$20.090
Aug 18, 2025 – Aug 22, 2025$20.01$21.03$19.23$20.840
Aug 25, 2025 – Aug 29, 2025$20.81$24.04$20.35$24.010
Sep 1, 2025 – Sep 5, 2025$23.92$24.51$22.54$23.560
Sep 8, 2025 – Sep 12, 2025$23.64$24.74$21.37$21.420
Sep 15, 2025 – Sep 19, 2025$21.44$24.65$21.28$24.410
Sep 22, 2025 – Sep 26, 2025$24.11$24.57$21.92$22.710
Sep 29, 2025 – Oct 3, 2025$22.84$23.38$22.01$22.720
Oct 6, 2025 – Oct 10, 2025$22.85$24.00$22.27$23.080
Oct 13, 2025 – Oct 17, 2025$23.43$23.94$22.10$22.140
Oct 20, 2025 – Oct 24, 2025$22.49$24.86$22.24$24.510
Oct 27, 2025 – Oct 31, 2025$24.73$25.62$23.31$25.500
Nov 3, 2025 – Nov 7, 2025$25.50$34.36$25.29$33.040
Nov 10, 2025 – Nov 14, 2025$33.11$35.49$32.51$33.450
Nov 17, 2025 – Nov 21, 2025$33.61$38.15$33.03$37.880
Nov 24, 2025 – Nov 28, 2025$37.94$40.61$37.58$39.950
Dec 1, 2025 – Dec 5, 2025$39.76$40.54$38.38$38.640
Dec 8, 2025 – Dec 12, 2025$39.19$39.19$36.63$38.630
Dec 15, 2025 – Dec 19, 2025$39.05$40.23$37.76$39.440
Dec 22, 2025 – Dec 26, 2025$40.00$42.18$39.28$39.400
Dec 29, 2025 – Jan 2, 2026$39.40$39.76$37.83$38.540
Jan 5, 2026 – Jan 9, 2026$38.48$41.35$37.29$39.340
Jan 12, 2026 – Jan 16, 2026$40.80$41.88$38.73$40.010
Jan 19, 2026 – Jan 23, 2026$39.90$43.01$39.74$42.240
Jan 26, 2026 – Jan 30, 2026$42.25$44.28$38.20$39.390
Feb 2, 2026 – Feb 6, 2026$39.65$40.88$31.64$32.750
Feb 9, 2026 – Feb 13, 2026$32.40$33.66$31.38$33.150
Feb 16, 2026 – Feb 20, 2026$33.13$34.44$29.10$29.210
Feb 23, 2026 – Feb 27, 2026$28.77$32.05$27.22$29.570
Mar 2, 2026 – Mar 6, 2026$28.74$29.37$26.61$27.120
Mar 9, 2026 – Mar 13, 2026$26.81$27.36$24.89$25.560
Mar 16, 2026 – Mar 20, 2026$25.81$26.79$24.74$25.000
Mar 23, 2026 – Mar 27, 2026$25.81$26.19$23.44$23.530
Mar 30, 2026 – Apr 2, 2026$23.54$25.48$23.24$24.840
Apr 6, 2026 – Apr 10, 2026$24.96$26.68$21.79$23.130
Apr 13, 2026 – Apr 17, 2026$22.92$25.37$22.81$25.050
Apr 20, 2026 – Apr 24, 2026$24.67$25.72$23.18$24.460
Apr 27, 2026 – May 1, 2026$24.45$25.71$23.31$24.810
May 4, 2026 – May 8, 2026$24.73$25.70$18.31$19.830
May 11, 2026 – May 15, 2026$19.91$19.98$17.72$19.130
May 18, 2026 – May 22, 2026$18.48$20.91$18.48$20.150
May 25, 2026 – May 29, 2026$20.12$22.18$19.55$21.080
Jun 1, 2026 – Jun 5, 2026$20.98$21.84$19.51$21.010
Jun 8, 2026 – Jun 12, 2026$21.16$21.52$20.11$20.700
Jun 15, 2026 – Jun 18, 2026$20.73$21.15$19.86$21.120
Jun 22, 2026 – Jun 26, 2026$21.29$24.34$20.64$24.300
Jun 29, 2026 – Jul 2, 2026$24.35$24.98$23.36$24.110
Jul 6, 2026 – Jul 10, 2026$23.95$24.80$23.34$23.720
Jul 13, 2026 – Jul 17, 2026$23.67$25.13$22.46$24.160
Jul 20, 2026 – Jul 24, 2026$23.97$25.63$23.25$24.690
Jul 27, 2026 – Jul 31, 2026$25.10$30.81$23.73$28.000
Aug 3, 2026 – Aug 7, 2026$27.83$32.37$27.83$32.030
Aug 10, 2026 – Aug 14, 2026$31.86$33.06$29.58$29.620
Aug 17, 2026 – Aug 21, 2026$29.50$34.70$28.72$34.200
Aug 24, 2026 – Aug 28, 2026$33.65$35.20$31.70$33.500
Aug 31, 2026 – Sep 4, 2026$33.03$34.73$31.99$32.910

Valuation

MetricValueUpside
IC Value$104.05+216%
P/E-30.67
P/B1.57
P/S2.15
EV/EBITDA42.17
PEG
P/TBV2.00

Valuation history

Annual price overlaid with each model's fair value. Y-axis is log scale.

Annual price and model valuations for CSTL, USD per share
YearPriceAIICGraham-DoddGraham Formula
2011
2012
2013
2014
2015
2016
2017
2018
2019$32.19$240.46
2020$64.19$46.73
2021$39.95$102.29
2022$19.47$15.38
2023$20.79$33.55
2024$20.21$347.95
2025$25.56$34.36

Historic valuation ratios

Pick a category, then toggle metrics to compare.

USD millions

Line items

    USD millions

    Line items

      USD millions

      Line items

        About Castle Biosciences, Inc.

        Castle Biosciences, Inc. functions as a commercial-stage diagnostics firm, with its primary objective being the provision of both diagnostic and prognostic testing services, specifically targeting various dermatological cancers. Their flagship product, DecisionDx-Melanoma, represents an advanced multi-gene expression profile (GEP) assay engineered to assess the probability of metastasis in patients afflicted with invasive cutaneous melanoma. In addition to their leading solution, the company has created several other specialized, proprietary tests. Among these is DecisionDx-UM, a GEP test tailored to forecast the risk of metastasis for individuals with uveal melanoma, a less common malignancy of the eye. Another key offering is DecisionDx-SCC, a distinctive 40-gene expression profile test that utilizes a patient's unique tumor biology to predict their specific risk of squamous cell carcinoma metastasis, particularly for those presenting with recognized risk factors. Moreover, they offer DecisionDx DiffDx-Melanoma and myPath Melanoma, both proprietary GEP tests employed to assist in the accurate diagnosis of ambiguous pigmented lesions. These specialized testing services are provided by Castle Biosciences to patients predominantly through their healthcare providers. The organization commenced operations in 2007 and maintains its corporate headquarters in Friendswood, Texas.

        CEO
        Derek J. Maetzold
        Employees
        883
        Beta
        1.00

        Peer comparison

        Same-industry comparables, ranked by market cap.

        Scroll horizontally for additional metrics. Ticker column stays fixed.

        Peer comparison for CSTL: basic info, valuation models, ratios, profitability, leverage, growth, cash flow, dividends, enterprise value, and Altman Z-score.
        Basic InfoIC ValuationCore ValuationProfitabilityLeverage & LiquidityGrowthCash FlowDividendsEnterprise ValueRisk
        TickerCompany NamePriceMarket CapValueUpsideP/EP/BP/SEV/EBITDAPEGP/TBVGross MarginOperating MarginNet MarginROEROICROADebt/EquityInterest CoverageCurrent RatioQuick RatioNet Debt/EBITDAEPS GrowthSales GrowthFCF GrowthFCF YieldOp Cash Flow RatioCash ROICDividend YieldDividend PayoutShareholder YieldEV/EBITEV/FCFEV/SalesAltman Z-Score
        CSTLCastle Biosciences, Inc.$32.03978.5M$34.36+7%-30.671.572.1542.172.0079.37%-12.44%-7.02%-5.21%-17.64%-4.35%0.08-497.795.264.99-7.04-233.87%3.66%-22.48%3.82%0.9414.26%0.00%0.00%0.00%-11.1716.891.394.54
        AMNAMN Healthcare Services, …$32.801.27B$40.83+24%-7.611.130.2714.81-1.8328.35%1.21%-3.51%-14.19%1.96%-4.24%1.250.730.940.827.61-35.58%-8.49%-2.38%32.12%0.4714.59%0.00%0.00%43.95%45.146.400.552.45
        CDNACareDx, Inc$45.502.35B$32.22-29%-42.452.992.39-162.283.9367.55%-6.60%-5.62%-6.27%-16.81%-4.72%0.092.862.458.43-143.01%13.79%14.43%3.98%0.4724.22%0.00%0.00%9.68%-30.1320.911.993.65
        DRIODarioHealth Corp.$7.6656.01M$14.96+95%-10.716.5819.98-13.03-82.1756.64%-163.94%-186.56%-59.62%-49.81%-36.44%0.47-10.913.733.10-0.16-267.57%-17.31%-32.60%-5.84%-2.78-35.45%0.00%0.00%0.00%-12.34-17.3420.22-0.01
        EMBCEmbecta Corp.$3.57211.8M$27.10+659%7.02-1.030.626.3633.60-0.9962.89%30.48%8.83%-13.73%39.87%8.03%-2.203.072.411.434.0920.90%-3.80%816.58%27.23%0.7331.55%5.23%36.70%26.39%5.6910.281.742.05
        EVHEvolent Health, Inc.$3.08346.44M$8.01+160%-0.590.820.18-3.26-0.11-0.4015.14%-0.24%-28.49%-81.81%-0.32%-26.08%2.38-0.081.311.23-2.32525.93%-26.56%-177.59%1.39%0.100.34%3.26%-1.90%14.97%-265.91248.020.630.23
        FLGTFulgent Genetics, Inc.$18.53526.26M$145.89+687%-7.380.411.41-2.75-18.570.4840.56%-28.23%-18.75%-5.49%-9.62%-5.07%0.01-1214.616.485.030.9339.72%13.83%545.09%-27.32%-1.20-14.90%0.00%0.00%3.06%-1.39-1.020.393.64
        GERNGeron Corporation$1.631.05B$20.93+1,184%-12.284.665.73-18.204.6697.42%-29.28%-46.65%-33.89%-95.18%-14.74%1.11-1.654.663.58-3.32-51.85%138.83%-49.34%-10.55%-1.00-196.41%0.00%0.00%0.00%-17.56-8.515.14-1.85
        MYGNMyriad Genetics, Inc.$3.15297.51M$15.52+393%-1.191.180.53-1.50-0.662.6769.93%-8.22%-44.38%-68.45%-10.76%-42.20%0.57-6.462.491.98-0.18180.85%-1.56%-33.33%-5.89%0.01-4.39%0.00%0.00%0.00%-7.30-19.340.60-0.27
        PSNLPersonalis, Inc.$13.521.44B$12.46-8%-7.382.308.61-5.632.3022.65%-126.43%-116.69%-35.02%-142.75%-26.89%0.15-429.556.766.461.19-33.58%-17.69%69.94%-13.25%-1.89-128.79%0.00%0.00%6.19%-4.54-5.035.742.44
        VIRVir Biotechnology, Inc.$9.111.54B$11.06+21%-2.931.6818.71-2.361.7382.92%-682.68%-638.87%-45.73%-112.47%-36.47%0.245.545.030.11-17.49%-7.61%-12.57%-30.92%-4.22-95.31%0.00%0.00%0.00%-2.15-2.5414.690.60

        Disclaimer: Information on this page is provided for educational purposes only and does not constitute investment advice. Upside computed as ($104.05 ÷ $32.91) − 1 = +216.17% (IC, example).