CSTL · Castle Biosciences Inc

$33.31 -0.95 (-2.77%)

Russell 2000 member Rebalance outlook locked

Market Cap

$1.06B

30.55M

Daily short-sale volume published by FINRA from its trade-reporting facilities. It measures how many shares were sold short each day as a share of total volume — a daily flow, not the total outstanding short position.

1M 3M 6M 1Y 5Y All

Short Volume

Date	Short Volume	Short Exempt	Total Volume	Short %
2026-08-27	43,612	0	99,151	44.0%
2026-08-26	67,781	0	201,582	33.6%
2026-08-25	73,129	0	143,831	50.8%
2026-08-24	84,810	0	149,939	56.6%
2026-08-21	123,041	0	233,360	52.7%
2026-08-20	72,406	0	132,657	54.6%
2026-08-19	93,020	0	166,471	55.9%
2026-08-18	69,975	0	130,172	53.8%
2026-08-17	24,566	1,200	70,463	34.9%
2026-08-14	22,275	0	97,330	22.9%
2026-08-13	61,557	0	114,381	53.8%
2026-08-12	59,392	0	130,393	45.5%
2026-08-11	36,416	0	98,847	36.8%
2026-08-10	66,205	0	128,894	51.4%
2026-08-07	47,664	0	83,650	57.0%
2026-08-06	83,376	0	532,428	15.7%
2026-08-05	80,411	0	322,485	24.9%
2026-08-04	124,375	2,863	256,170	48.6%
2026-08-03	120,136	1	302,123	39.8%
2026-07-31	245,502	2,000	495,403	49.6%
2026-07-30	135,658	0	253,545	53.5%
2026-07-29	58,707	0	125,107	46.9%
2026-07-28	60,383	121	117,919	51.2%
2026-07-27	51,431	0	95,017	54.1%
2026-07-24	71,136	0	112,406	63.3%
2026-07-23	58,002	0	109,970	52.7%
2026-07-22	100,392	0	129,637	77.4%
2026-07-21	52,914	0	71,591	73.9%
2026-07-20	60,125	0	96,870	62.1%
2026-07-17	62,216	0	94,748	65.7%
2026-07-16	64,218	0	108,945	58.9%
2026-07-15	24,911	0	53,113	46.9%
2026-07-14	29,731	0	74,890	39.7%
2026-07-13	34,263	0	74,110	46.2%
2026-07-10	32,825	0	73,446	44.7%
2026-07-09	39,702	0	84,209	47.1%
2026-07-08	43,318	0	87,577	49.5%
2026-07-07	41,227	0	80,988	50.9%
2026-07-06	28,740	0	57,103	50.3%
2026-07-02	38,927	186	58,592	66.4%
2026-07-01	59,249	74	100,512	58.9%
2026-06-30	43,477	0	94,261	46.1%
2026-06-29	29,119	1,700	79,379	36.7%
2026-06-26	32,741	0	186,941	17.5%
2026-06-25	25,295	0	107,872	23.4%
2026-06-24	44,894	0	118,926	37.7%
2026-06-23	38,458	500	146,151	26.3%
2026-06-22	23,725	72	76,518	31.0%
2026-06-18	30,858	1,783	230,315	13.4%
2026-06-17	27,526	0	91,406	30.1%

Showing 1–50 of 64 days

Key facts CIK 1447362 CUSIP 14843C105 13F (30d) 149 filings 149 filers Visit website Investor relations