Castle Biosciences, Inc. (CSTL) NASDAQ

Currency In USD

CSTL Historical Return

If you invested $1000 in Castle Biosciences, Inc. (CSTL) since IPO date, it would be worth $1,598.13 as of August 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $482.85, while $1000 invested 1 year ago would be worth $1,641.07. This corresponds to total returns of 59.81%, -51.72%, 64.11%, respectively, with annualized returns of 6.84%, -13.55%, 64.11%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

CSTL Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
August 21, 2026	32.85	34.2	34.2	34.7	32.14	573,468
August 20, 2026	32.41	32.93	32.93	34.01	32.41	322,908
August 19, 2026	29.03	32.32	32.32	32.39	29.03	451,917
August 18, 2026	29.89	29.03	29.03	30.13	28.72	596,609
August 17, 2026	29.5	29.95	29.95	30.5	29.21	225,680
August 14, 2026	30.93	29.62	29.62	31.12	29.58	264,210
August 13, 2026	31.62	30.55	30.55	31.97	30.51	362,229
August 12, 2026	32.43	31.43	31.43	33	31.25	435,994
August 11, 2026	32.34	32.24	32.24	32.99	31.46	0
August 10, 2026	31.86	32.35	32.35	33.06	31.24	400,730
August 07, 2026	30.88	32.03	32.03	32.37	30.65	241,774
August 06, 2026	30.2	30.47	30.47	30.75	29.5	833,433
August 05, 2026	31.18	30.4	30.4	31.42	30.1	520,194
August 04, 2026	30.18	31.18	31.18	31.73	29.99	675,143
August 03, 2026	27.83	30.39	30.39	30.73	27.83	783,947
July 31, 2026	28.75	28	28	30.81	27.5	1.76M
July 30, 2026	24.5	26.79	26.79	27.13	24.5	689,597
July 29, 2026	23.93	24.46	24.46	25.3	23.73	340,083
July 28, 2026	24.63	23.89	23.89	24.77	23.76	366,213
July 27, 2026	25.1	24.44	24.44	25.12	23.85	291,637
July 23, 2026	24.53	25.48	25.48	25.5	24.53	407,868
July 22, 2026	24.33	24.81	24.81	24.92	23.77	404,420
July 21, 2026	23.57	24.51	24.51	24.69	23.25	326,187
July 20, 2026	23.97	23.9	23.9	24.15	23.76	315,668
July 17, 2026	23.79	24.16	24.16	24.34	23.59	242,886
July 16, 2026	24.06	24.23	24.23	25.13	23.82	375,696
July 15, 2026	23.42	24.02	24.02	24.03	23.04	181,267
July 14, 2026	23.3	23.12	23.12	23.3	22.61	251,254
July 13, 2026	23.67	22.98	22.98	23.88	22.46	269,897
July 10, 2026	24.55	23.72	23.72	24.67	23.36	207,334
July 09, 2026	23.7	24.56	24.56	24.8	23.55	262,625
July 08, 2026	23.45	23.64	23.64	23.92	23.34	413,158
July 07, 2026	24.36	23.83	23.83	24.41	23.48	234,221
July 06, 2026	23.95	24.21	24.21	24.55	23.6	187,687
July 02, 2026	24.71	24.11	24.11	24.98	24.02	175,502
July 01, 2026	23.92	24.71	24.71	24.86	23.86	318,181
June 30, 2026	24.14	23.85	23.85	24.14	23.36	336,700
June 29, 2026	24.35	24.32	24.32	24.8	24.21	295,568
June 26, 2026	22.67	24.3	24.3	24.34	22.67	1.04M
June 25, 2026	22.33	22.91	22.91	22.93	22.24	305,329
June 24, 2026	21.42	22.12	22.12	22.46	21.4	456,105
June 23, 2026	21.07	21.38	21.38	21.93	21.05	439,261
June 22, 2026	21.29	21.2	21.2	21.47	20.64	428,315
June 18, 2026	20.39	21.12	21.12	21.15	20.23	720,100
June 17, 2026	20.68	20.25	20.25	20.71	19.86	310,437
June 16, 2026	20.67	20.46	20.46	21.12	20.37	369,727
June 15, 2026	20.73	20.66	20.66	21.02	20.38	219,920
June 12, 2026	21.06	20.7	20.7	21.2	20.51	152,258
June 11, 2026	21.07	21.01	21.01	21.29	20.53	215,205
June 10, 2026	20.88	21.08	21.08	21.52	20.88	245,606
June 09, 2026	20.3	21.08	21.08	21.09	20.24	289,481
June 08, 2026	21.16	20.12	20.12	21.16	20.11	247,972
June 05, 2026	21.57	21.01	21.01	21.78	20.99	212,464
June 04, 2026	20.61	21.6	21.6	21.84	20.61	291,697
June 03, 2026	19.66	20.39	20.39	20.74	19.58	510,190
June 02, 2026	20.54	19.71	19.71	20.54	19.51	445,553
June 01, 2026	20.98	20.97	20.97	21.21	20.45	312,020
May 29, 2026	21.99	21.08	21.08	22.14	20.99	358,495
May 28, 2026	21.12	22.11	22.11	22.18	21.1	297,181
May 27, 2026	19.77	21.26	21.26	21.81	19.68	626,042