CSGP

Costar Group, Inc.

Company with tickers: CSGP

CIK

1057352

CUSIP

22160N109

Shares Outstanding

408,355,715

13F Activity (30d)

390 filings 378 filers

Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.

1M 3M 6M 1Y 5Y All

Off-Exchange Volume History

Week Start	ATS Volume	Non-ATS OTC Volume	Total Off-Exchange	% of FINRA Weekly Volume
2025-12-15	7,552,045	6,087,431	13,639,476	41.2%
2025-12-22	2,136,567	2,892,282	5,028,849	47.3%
2025-12-29	2,352,016	3,713,301	6,065,317	48.8%
2026-01-05	12,160,021	4,714,448	16,874,469	45.2%
2026-01-12	12,013,855	9,812,701	21,826,556	50.9%
2026-01-19	6,540,451	4,296,002	10,836,453	44.5%
2026-01-26	11,805,098	5,144,770	16,949,868	47.6%
2026-02-02	13,296,912	5,708,547	19,005,459	43.1%
2026-02-09	10,699,884	6,277,688	16,977,572	46.3%
2026-02-16	6,982,902	4,818,306	11,801,208	39.4%
2026-02-23	11,814,229	4,026,846	15,841,075	39.5%
2026-03-02	6,271,779	4,441,172	10,712,951	41.0%
2026-03-09	7,520,066	3,350,972	10,871,038	40.3%
2026-03-16	6,797,408	7,241,056	14,038,464	35.1%
2026-03-23	8,697,521	3,991,785	12,689,306	44.1%
2026-03-30	5,330,047	3,869,872	9,199,919	39.3%
2026-04-06	7,429,101	3,518,589	10,947,690	41.1%
2026-04-13	9,581,536	6,211,020	15,792,556	51.6%
2026-04-20	6,191,595	2,922,651	9,114,246	39.5%
2026-04-27	11,662,037	7,674,888	19,336,925	61.2%
2026-05-04	7,757,119	6,440,301	14,197,420	49.3%
2026-05-11	12,006,163	17,449,145	29,455,308	91.7%
2026-05-18	8,561,224	5,476,539	14,037,763	58.7%

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