Costar Group, Inc.

CSGP

Exchange: Nasdaq
Industry: Services-Business Services, NEC
SEC CIK: 0001057352

SEC filings (opens in a new tab)

In the last 90 days, Costar Group, Inc. insiders filed 1 open-market purchase and 2 sales; 760 institutions reported holding it in 13F filings for Q2 2026, worth $11.7B in total; superinvestors Akre Capital Management and Weitz Investment Management hold it.

13F holders, Q1 2021

Institutional positions in Costar Group, Inc. as of Mar 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders: 593; No complete 13F data for Q4 2020
Shares held: 38.0M; No complete 13F data for Q4 2020
Total value: $31.2B; No complete 13F data for Q4 2020

Holders and value by quarter

Institutions reporting CSGP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2021: 593 institutions

Value heldQ1 2021: $31.2B

Institutions holding CSGP and their total value by quarter
Quarter	Holders	Value
Q2 2026	760	$11.7B
Q1 2026	797	$16.8B
Q4 2025	847	$28.4B
Q3 2025	905	$34.9B
Q2 2025	873	$34.2B
Q1 2025	858	$33.9B
Q4 2024	805	$28.9B
Q3 2024	773	$30.0B
Q2 2024	767	$29.3B
Q1 2024	767	$38.4B
Q4 2023	737	$34.4B
Q3 2023	690	$30.1B
Q2 2023	714	$35.5B
Q1 2023	692	$26.7B
Q4 2022	704	$30.4B
Q3 2022	634	$28.0B
Q2 2022	591	$23.0B
Q1 2022	589	$25.2B
Q4 2021	633	$29.6B
Q3 2021	594	$32.3B
Q2 2021	607	$31.1B
Q1 2021	593	$31.2B

Institutions, Q1 2021

Shares, value and share of portfolio for each institution holding Costar Group, Inc..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding CSGP in Q1 2021
Institution	Shares	Value	% of portfolio	Change in shares	Action
Achmea Investment Management B.V.	2,036	$1.67M	0.06%	–	–
Chartwell Investment Partners, LLC	2,044	$1.68M	0.05%	–	–
Emerald Advisers, LLC	2,048	$1.68M	0.06%	–	–
Candriam Luxembourg S.C.A.	1,919	$1.70M	0.01%	–	–
Schroder Investment Management Group	2,076	$1.71M	0.00%	–	–
FDx Advisors, Inc.	2,237	$1.84M	0.07%	–	–
Weiss Asset Management LP	2,255	$1.85M	0.05%	–	–
Park Avenue Securities LLC	2,316	$1.90M	0.05%	–	–
Townsend & Associates, Inc	2,343	$1.93M	1.25%	–	–
Fortis Capital Management LLC	2,400	$1.97M	1.14%	–	–
AXS Investments LLC	2,408	$1.98M	0.70%	–	–
Jackson Wealth Management, LLC	2,433	$2.00M	0.30%	–	–
Bell Bank	2,482	$2.04M	0.29%	–	–
Mackenzie Financial Corp	2,516	$2.07M	0.00%	–	–
Virtu Financial LLC	2,586	$2.13M	0.15%	–	–
TD Private Client Wealth LLC	2,654	$2.18M	0.10%	–	–
TBH Global Asset Management, LLC	2,660	$2.19M	0.57%	–	–
Daiwa Securities Group Inc.	2,694	$2.21M	0.02%	–	–
Intrinsic Edge Capital Management LLC	2,748	$2.26M	0.16%	–	–
Metropolitan Life Insurance Co	2,836	$2.33M	0.03%	–	–
Westpac Banking Corp	2,877	$2.36M	0.03%	–	–
Comerica Bank	2,544	$2.38M	0.01%	–	–
Capitolis Advisors LLC	2,935	$2.41M	0.04%	–	–
Tributary Capital Management, LLC	2,950	$2.42M	0.19%	–	–
Vestmark Advisory Solutions, Inc.	2,972	$2.44M	0.22%	–	–
Maryland State Retirement & Pension System	2,982	$2.45M	0.09%	–	–
Fifth Third Bancorp	3,000	$2.47M	0.01%	–	–
Aigen Investment Management, LP	3,007	$2.47M	0.33%	–	–
HawsGoodwin Investment Management LLC	3,012	$2.48M	0.79%	–	–
Carderock Capital Management Inc	3,039	$2.50M	0.75%	–	–
Barbara Oil Co.	3,200	$2.63M	1.27%	–	–
Clearbridge Investments, LLC	3,202	$2.63M	0.00%	–	–
ExodusPoint Capital Management, LP	3,311	$2.72M	0.05%	–	–
Federation des caisses Desjardins du Quebec	3,312	$2.72M	0.03%	–	–
Stephens Inc	3,321	$2.73M	0.04%	–	–
Pinebridge Investments, L.P.	3,380	$2.78M	0.04%	–	–
Banco Santander, S.A.	3,395	$2.79M	0.02%	–	–
HighTower Advisors, LLC	3,429	$2.82M	0.01%	–	–
M&T Bank Corp	3,483	$2.86M	0.01%	–	–
Los Angeles Capital Management LLC	3,495	$2.87M	0.01%	–	–
Next Century Growth Investors LLC	3,558	$2.92M	0.22%	–	–
Tower Research Capital LLC (TRC)	3,619	$2.97M	0.05%	–	–
Wolverine Trading, LLC	3,757	$3.00M	0.06%	–	–
Nicholas Investment Partners, LP	3,701	$3.04M	0.21%	–	–
AXA S.A.	3,820	$3.14M	0.01%	–	–
Papp L Roy & Associates	3,833	$3.15M	0.45%	–	–
Allianz Asset Management GmbH	3,857	$3.17M	0.00%	–	–
Marks Group Wealth Management, Inc	3,875	$3.18M	0.47%	–	–
Lee Capital Holdings LLC	3,955	$3.25M	1.49%	–	–
Point72 Hong Kong Ltd	3,987	$3.28M	0.26%	–	–
Standard Life Aberdeen plc	4,059	$3.34M	0.01%	–	–
Xponance, Inc.	4,060	$3.34M	0.07%	–	–
Cambridge Investment Research Advisors, Inc.	4,068	$3.34M	0.02%	–	–
Taikang Asset Management (Hong Kong) Co Ltd	4,101	$3.37M	0.64%	–	–
EFG Asset Management (Americas) Corp.	4,121	$3.39M	0.69%	–	–
DekaBank Deutsche Girozentrale	4,260	$3.40M	0.01%	–	–
AlphaCrest Capital Management LLC	4,218	$3.47M	0.19%	–	–
IFM Investors Pty Ltd	4,233	$3.48M	0.09%	–	–
Worldquant Millennium Advisors LLC	4,265	$3.50M	0.07%	–	–
Regions Financial Corp	4,321	$3.55M	0.03%	–	–
Magnetar Financial LLC	4,363	$3.59M	0.03%	–	–
MML Investors Services, LLC	4,374	$3.60M	0.03%	–	–
Illinois Municipal Retirement Fund	4,466	$3.67M	0.16%	–	–
Azzad Asset Management Inc	4,515	$3.71M	0.62%	–	–
Redwood Investments, LLC	4,663	$3.83M	0.34%	–	–
Janney Montgomery Scott LLC	4,840	$3.98M	0.02%	–	–
BTC Capital Management, Inc.	4,885	$4.01M	0.45%	–	–
Oregon Public Employees Retirement Fund	4,900	$4.03M	0.05%	–	–
Employees Retirement System of Texas	4,922	$4.04M	0.05%	–	–
LPL Financial LLC	5,105	$4.20M	0.00%	–	–
Shell Asset Management Co	5,343	$4.39M	0.09%	–	–
Public Employees Retirement Association of Colorado	5,391	$4.43M	0.02%	–	–
Nishkama Capital, LLC	5,400	$4.44M	1.26%	–	–
Reliant Investment Management, LLC	5,410	$4.45M	2.18%	–	–
ProShare Advisors LLC	5,493	$4.51M	0.01%	–	–
Formula Growth Ltd	5,500	$4.52M	0.65%	–	–
Nisa Investment Advisors, LLC	5,735	$4.71M	0.03%	–	–
Andra AP-fonden	6,000	$4.93M	0.11%	–	–
Banque Pictet & Cie SA	6,000	$4.93M	0.06%	–	–
Commerce Bank	6,082	$5.00M	0.04%	–	–
Foster Victor Wealth Advisors, LLC	5,643	$5.11M	0.95%	–	–
Shaker Investments LLC	6,257	$5.14M	2.49%	–	–
Jag Capital Management, LLC	6,271	$5.15M	0.46%	–	–
Cubist Systematic Strategies, LLC	6,297	$5.17M	0.07%	–	–
British Columbia Investment Management Corp	6,457	$5.31M	0.04%	–	–
First Trust Advisors LP	6,683	$5.49M	0.01%	–	–
Skandinaviska Enskilda Banken AB (publ)	6,906	$5.68M	0.04%	–	–
XXEC, Inc.	6,969	$5.73M	4.03%	–	–
Forsta Ap-Fonden	7,000	$5.75M	0.08%	–	–
Zurcher Kantonalbank (Zurich Cantonalbank)	7,078	$5.82M	0.03%	–	–
Voya Financial Advisors, Inc.	7,325	$5.86M	0.23%	–	–
Utah Retirement Systems	7,501	$6.17M	0.09%	–	–
Tsai Capital Corp	7,519	$6.18M	6.10%	–	–
The PNC Financial Services Group, Inc.	7,687	$6.32M	0.01%	–	–
Nomura Holdings Inc	7,802	$6.42M	0.05%	–	–
Old National Bancorp	7,844	$6.45M	0.26%	–	–
Gulf International Bank (UK) Ltd	7,882	$6.48M	0.09%	–	–
US Bancorp	7,987	$6.57M	0.01%	–	–
Nomura Asset Management Co Ltd	8,073	$6.64M	0.04%	–	–
BNP Paribas Arbitrage, SA	8,419	$6.92M	0.02%	–	–