CSGP short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31

Short % of Float4.1%399,533,000 float shares

Days to Cover1.98,517,346 average daily volume

Open Short Position16,312,412CoStar Group, Inc. Common Stoc

Change vs Previous-9,004-0.1%

Short interest history

Twice-monthly snapshots of open short positions.

Settlement	Short Position	Change	Change %	Days to Cover	Short % Float
Jul 31, 2026	16,312,412	-9,004	-0.1%	1.9	4.1%
Jul 15, 2026	16,321,416	+1,055,077	+6.9%	2.5	4.1%
Jun 30, 2026	15,266,339	-1,842,868	-10.8%	1.9	3.8%

Short interest is an open-position snapshot published twice monthly. It is not daily short-sale volume.

Daily off-exchange short volume

FINRA-reported short-sale transaction flow for the last 30 calendar days.

Trade Date	Short Volume	Short Exempt	FINRA Total	Short Volume %	Facilities
Aug 21, 2026	928,056	668	2,115,728	43.9%	3
Aug 20, 2026	1,416,823	26,384	2,918,881	48.5%	3
Aug 19, 2026	1,429,881	5,057	2,584,276	55.3%	3
Aug 18, 2026	806,170	8,526	1,432,786	56.3%	3
Aug 17, 2026	1,177,419	2,163	1,983,821	59.4%	3
Aug 14, 2026	1,466,581	113	2,404,479	61.0%	3
Aug 13, 2026	1,620,454	6,855	2,862,442	56.6%	3
Aug 12, 2026	659,401	105	1,571,477	42.0%	3
Aug 11, 2026	718,632	0	1,374,017	52.3%	3
Aug 10, 2026	1,299,214	82	2,406,030	54.0%	3
Aug 7, 2026	718,979	1,100	1,854,077	38.8%	3
Aug 6, 2026	720,626	122	1,923,670	37.5%	3
Aug 5, 2026	1,025,211	2,366	2,376,884	43.1%	3
Aug 4, 2026	1,009,317	296	1,997,704	50.5%	3
Aug 3, 2026	1,077,309	55,638	2,367,799	45.5%	3
Jul 31, 2026	1,434,601	5,572	2,842,443	50.5%	3
Jul 30, 2026	2,406,044	52,751	5,423,384	44.4%	3
Jul 29, 2026	2,469,516	35,857	7,344,863	33.6%	3
Jul 28, 2026	1,383,927	43,995	3,667,183	37.7%	3
Jul 27, 2026	1,523,175	5,280	3,656,720	41.7%	3
Jul 24, 2026	1,139,157	106,478	3,036,687	37.5%	3

Daily short volume is transaction flow reported through FINRA facilities. It does not measure open short positions and is not consolidated exchange-wide volume.