CMPS · COMPASS Pathways plc · Short Volume

$12.44 -0.52 (-4.01%) At close · Sep 30

Market Cap

$1.78B

138.48M

Volume · Sep 30 3.05M Avg daily vol (3M) 3.34M

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.

Pull daily short volume through the short interest API or MCP →

1M 3M 6M 1Y 5Y All

Short Volume

Date	Short Volume	Short Exempt	Total Volume	Short %
2026-09-30	427,128	11,700	1,253,133	34.1%
2026-09-29	344,298	0	1,065,330	32.3%
2026-09-28	320,111	100	676,370	47.3%
2026-09-25	490,602	16,657	861,554	56.9%
2026-09-24	1,072,529	3,903	1,708,871	62.8%
2026-09-23	484,865	29,284	1,062,711	45.6%
2026-09-22	356,986	0	947,113	37.7%
2026-09-21	400,853	0	829,264	48.3%
2026-09-18	1,038,274	515	1,678,446	61.9%
2026-09-17	1,115,869	5,597	2,079,445	53.7%
2026-09-16	313,767	0	886,914	35.4%
2026-09-15	435,714	6,565	991,271	44.0%
2026-09-14	439,992	0	1,179,401	37.3%
2026-09-11	462,082	1,340	883,749	52.3%
2026-09-10	945,188	1,530	1,416,959	66.7%
2026-09-09	2,112,410	9,269	3,777,328	55.9%
2026-09-08	646,857	5,100	1,491,937	43.4%
2026-09-04	152,573	0	337,113	45.3%
2026-09-03	397,794	262	824,519	48.2%
2026-09-02	233,491	5,069	743,699	31.4%
2026-09-01	195,489	2,846	733,632	26.6%
2026-08-31	296,226	58	808,296	36.6%
2026-08-28	405,425	2,211	1,031,761	39.3%
2026-08-27	304,636	15,706	706,506	43.1%
2026-08-26	264,954	0	711,965	37.2%
2026-08-25	383,738	85	1,115,827	34.4%
2026-08-24	362,105	2,240	1,112,262	32.6%
2026-08-21	424,002	0	839,224	50.5%
2026-08-20	305,759	5,752	878,683	34.8%
2026-08-19	487,734	273	1,294,745	37.7%
2026-08-18	494,126	203	1,349,173	36.6%
2026-08-17	345,784	300	772,162	44.8%
2026-08-14	206,106	774	545,800	37.8%
2026-08-13	510,736	34,471	1,233,951	41.4%
2026-08-12	802,408	1,863	1,828,598	43.9%
2026-08-11	274,932	47	857,304	32.1%
2026-08-10	189,041	1,014	756,722	25.0%
2026-08-07	360,009	1,340	1,817,167	19.8%
2026-08-06	337,762	1,265	1,100,813	30.7%
2026-08-05	1,093,076	400	3,288,767	33.2%
2026-08-04	408,860	1,702	1,096,568	37.3%
2026-08-03	642,257	30,108	1,333,987	48.1%
2026-07-31	390,171	4,245	947,178	41.2%
2026-07-30	368,886	236	866,816	42.6%
2026-07-29	495,533	675	1,197,131	41.4%
2026-07-28	454,741	9,902	1,185,753	38.4%
2026-07-27	360,820	811	936,123	38.5%
2026-07-24	497,044	14,715	1,491,006	33.3%
2026-07-23	407,774	3,523	846,050	48.2%
2026-07-22	277,042	6,702	865,373	32.0%

Showing 1–50 of 64 days

Key facts CIK 1816590 CUSIP 20451W101 13F (30d) 8 filings 8 filers Visit website Investor relations