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 $1,550.93 as of October 23, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $525.99, while $1000 invested 1 year ago would be worth $1,372.62. This corresponds to total returns of 55.09%, -47.4%, 37.26%, respectively, with annualized returns of 6.24%, -12.06%, 37.26%.

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
October 22, 2026	34.13	33.19	33.19	34.55	33.06	335,418
October 21, 2026	33.15	34.37	34.37	34.72	32.93	336,587
October 20, 2026	32.65	33.15	33.15	33.55	32.09	272,491
October 19, 2026	32.44	32.17	32.17	32.74	31.67	347,231
October 16, 2026	33.82	31.96	31.96	34.15	31.8	380,930
October 15, 2026	33.13	33.8	33.8	34.06	32.48	381,934
October 14, 2026	32.47	33.11	33.11	33.77	32.47	243,174
October 13, 2026	32.79	32.88	32.88	33.35	32.23	241,698
October 12, 2026	34.42	32.76	32.76	34.42	32.31	238,969
October 09, 2026	33.52	34.42	34.42	34.52	33.39	249,077
October 08, 2026	32.54	33.71	33.71	33.76	32.25	373,798
October 07, 2026	33.15	33	33	33.72	32.77	351,523
October 06, 2026	36.65	33.36	33.36	37.99	33.1	607,645
October 05, 2026	35.45	36.65	36.65	36.76	35.1	377,208
October 02, 2026	35.56	35.56	35.56	35.92	34.75	167,717
October 01, 2026	36.1	35.26	35.26	36.99	35.17	522,288
September 30, 2026	34.9	35.53	35.53	36.03	34.14	639,569
September 29, 2026	35.72	34.88	34.88	36.24	34.24	318,616
September 28, 2026	35.81	35.93	35.93	36.27	35.09	228,424
September 25, 2026	35.19	35.81	35.81	36.12	34.44	437,679
September 24, 2026	34.88	35.19	35.19	35.84	33.9	439,150
September 23, 2026	34.74	34.88	34.88	34.97	33.99	348,274
September 22, 2026	35.53	34.85	34.85	35.53	34.57	430,777
September 21, 2026	35.62	34.99	34.99	35.75	34.48	391,675
September 18, 2026	36.54	35.34	35.34	36.54	35.29	530,191
September 17, 2026	35.98	36.78	36.78	36.85	34.94	364,629
September 16, 2026	35.5	35.48	35.48	36.82	35.26	559,267
September 15, 2026	33.64	35.5	35.5	35.69	33.64	519,837
September 11, 2026	32.77	32.33	32.33	32.94	31.71	224,201
September 10, 2026	31.97	32.32	32.32	32.7	31.44	237,824
September 09, 2026	32.43	32.31	32.31	33.03	32	194,559
September 08, 2026	32.57	32.76	32.76	33.58	32.28	216,754
September 04, 2026	32.32	32.91	32.91	33.21	31.99	187,724
September 03, 2026	33.5	32.65	32.65	34	32.38	267,995
September 02, 2026	33.36	33.42	33.42	34.73	32.69	200,261
September 01, 2026	33	33.44	33.44	34.09	32.89	396,178
August 31, 2026	33.03	33.03	33.03	33.3	32.36	258,002
August 28, 2026	34.02	33.5	33.5	34.28	32.8	372,590
August 27, 2026	34.01	34.26	34.26	34.89	33.98	251,211
August 26, 2026	34.8	34.08	34.08	34.84	33.62	456,261
August 25, 2026	33.47	35	35	35.2	33.29	483,059
August 24, 2026	33.65	33.47	33.47	34.54	31.7	356,865
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