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Costar Group, Inc.

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

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
Q1 2021: 593 institutionsQ2 2021: 607 institutionsQ3 2021: 594 institutionsQ4 2021: 633 institutionsQ1 2022: 589 institutionsQ2 2022: 591 institutionsQ3 2022: 634 institutionsQ4 2022: 704 institutionsQ1 2023: 692 institutionsQ2 2023: 714 institutionsQ3 2023: 690 institutionsQ4 2023: 737 institutionsQ1 2024: 767 institutionsQ2 2024: 767 institutionsQ3 2024: 773 institutionsQ4 2024: 805 institutionsQ1 2025: 858 institutionsQ2 2025: 873 institutionsQ3 2025: 905 institutionsQ4 2025: 847 institutionsQ1 2026: 797 institutionsQ2 2026: 760 institutions
Value heldQ1 2021: $31.2B
Q1 2021: $31.2BQ2 2021: $31.1BQ3 2021: $32.3BQ4 2021: $29.6BQ1 2022: $25.2BQ2 2022: $23.0BQ3 2022: $28.0BQ4 2022: $30.4BQ1 2023: $26.7BQ2 2023: $35.5BQ3 2023: $30.1BQ4 2023: $34.4BQ1 2024: $38.4BQ2 2024: $29.3BQ3 2024: $30.0BQ4 2024: $28.9BQ1 2025: $33.9BQ2 2025: $34.2BQ3 2025: $34.9BQ4 2025: $28.4BQ1 2026: $16.8BQ2 2026: $11.7B
Institutions holding CSGP and their total value by quarter
QuarterHoldersValue
Q2 2026760$11.7B
Q1 2026797$16.8B
Q4 2025847$28.4B
Q3 2025905$34.9B
Q2 2025873$34.2B
Q1 2025858$33.9B
Q4 2024805$28.9B
Q3 2024773$30.0B
Q2 2024767$29.3B
Q1 2024767$38.4B
Q4 2023737$34.4B
Q3 2023690$30.1B
Q2 2023714$35.5B
Q1 2023692$26.7B
Q4 2022704$30.4B
Q3 2022634$28.0B
Q2 2022591$23.0B
Q1 2022589$25.2B
Q4 2021633$29.6B
Q3 2021594$32.3B
Q2 2021607$31.1B
Q1 2021593$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
InstitutionSharesValue% of portfolioChange in sharesAction
Quantum Capital Management, LLC36,867$30.3M4.03%––
LMR Partners LLP36,753$30.2M0.75%––
Stifel Financial Corp36,217$29.8M0.05%––
Panagora Asset Management Inc35,556$29.2M0.16%––
FIL Ltd35,331$29.0M0.03%––
Nissay Asset Management Corp35,226$29.0M0.29%––
Jennison Associates LLC33,747$27.7M0.02%––
Susquehanna International Group, LLP33,255$27.3M0.04%––
American Assets Capital Advisers, LLC33,067$27.2M3.53%––
TIG Advisors, LLC32,979$27.1M1.04%––
AQR Capital Management LLC33,292$26.9M0.04%––
Jane Street Group, LLC32,409$26.6M0.07%––
Great West Life Assurance Co32,526$26.6M0.06%––
Natixis31,983$26.3M0.09%––
Royal London Asset Management Ltd31,675$26.1M0.12%––
Raymond James & Associates31,507$25.9M0.03%––
Asset Management One Co.,Ltd.31,366$25.8M0.10%––
Barclays PLC31,141$25.6M0.02%––
Sandhill Capital Partners LLC28,971$23.8M2.02%––
Thrivent Financial for Lutherans28,951$23.8M0.05%––
Assenagon Asset Management S.A.28,929$23.8M0.12%––
Ashford Capital Management Inc28,403$23.3M2.18%––
Russell Investments Group, Ltd.28,149$23.1M0.04%––
Scout Investments, Inc.27,972$23.0M0.35%––
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.25,097$20.6M0.14%––
Islet Management, LP25,000$20.5M1.04%––
TCW Group Inc24,669$20.3M0.19%––
Alliancebernstein L.P.24,178$19.9M0.01%––
HRT Financial LP24,147$19.8M0.20%––
State of New Jersey Common Pension Fund D23,786$19.5M0.07%––
Bank of Montreal22,036$19.3M0.01%––
Alyeska Investment Group, L.P.21,305$17.5M0.23%––
Public Employees Retirement System of Ohio21,062$17.3M0.07%––
Boston Private Wealth LLC21,059$17.3M0.24%––
Picton Mahoney Asset Management20,613$16.9M0.85%––
State of Wisconsin Investment Board19,528$16.1M0.03%––
Oppenheimer Asset Management Inc.19,132$15.7M0.24%––
Citadel Advisors LLC18,260$15.0M0.02%––
Spire Wealth Management17,830$14.6M0.39%––
Alberta Investment Management Corp17,600$14.5M0.13%––
Nordea Investment Management AB17,395$14.1M0.02%––
Archon Partners LLC17,100$14.1M1.96%––
AE Wealth Management LLC17,082$14.0M0.14%––
Royal Bank of Canada17,035$14.0M0.00%––
Jupiter Asset Management Ltd16,810$13.8M0.14%––
Teachers Retirement System of the State of Kentucky16,535$13.6M0.13%––
HSBC Holdings PLC16,497$13.6M0.02%––
Spence Asset Management16,410$13.5M3.90%––
Marsico Capital Management LLC16,217$13.3M0.35%––
Ycg, LLC15,940$13.1M1.46%––
Badgley Phelps & Bell Inc15,576$12.8M0.53%––
NS Partners Ltd15,423$12.7M0.73%––
Two Sigma Investments, LP15,309$12.6M0.04%––
Treasurer of the State of North Carolina14,903$12.2M0.08%––
Vantage Investment Partners, LLC14,447$11.9M0.58%––
Aviva PLC14,435$11.9M0.06%––
Pictet Asset Management Ltd14,151$11.6M0.01%––
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund13,837$11.4M0.10%––
Swedbank AB13,630$11.2M0.02%––
Robeco Institutional Asset Management B.V.12,959$10.7M0.03%––
Rice Hall James & Associates, LLC12,877$10.6M0.34%––
Stony Point Capital LLC12,750$10.5M3.36%––
Toronto Dominion Bank12,698$10.4M0.02%––
Prudential Financial Inc12,695$10.4M0.02%––
Connor, Clark & Lunn Investment Management Ltd.12,656$10.4M0.06%––
AMP Capital Investors Ltd12,484$10.2M0.05%––
NN Investment Partners Holdings N.V.12,401$10.2M0.06%––
Gateway Investment Advisers LLC12,317$10.1M0.11%––
Storebrand Asset Management AS11,947$9.82M0.05%––
KBC Group NV11,943$9.82M0.04%––
Congress Asset Management Co11,841$9.73M0.09%––
Canada Pension Plan Investment Board11,729$9.64M0.01%––
Advisor Group Holdings, Inc.11,421$9.39M0.02%––
Erste Asset Management GmbH11,375$9.35M0.23%––
Arizona State Retirement System11,365$9.34M0.08%––
Squarepoint Ops LLC11,182$9.19M0.08%––
Varma Mutual Pension Insurance Co11,000$9.04M0.13%––
Qube Research & Technologies Ltd10,970$9.02M0.15%––
Mirae Asset Global Investments Co., Ltd.10,498$8.63M0.03%––
Sumitomo Mitsui DS Asset Management Company, Ltd10,326$8.49M0.22%––
EULAV Asset Management10,304$8.47M0.23%––
Hexavest Inc.10,096$8.30M0.37%––
Night Owl Capital Management, LLC9,952$8.18M1.66%––
2Xideas AG9,609$7.90M0.87%––
Handelsbanken Fonder AB9,560$7.86M0.04%––
Brown Advisory Inc9,467$7.78M0.01%––
State of Alaska, Department of Revenue9,204$7.56M0.08%––
Man Group plc8,955$7.36M0.03%––
Edgestream Partners, L.P.8,954$7.36M0.41%––
First Republic Investment Management, Inc.8,903$7.32M0.02%––
PEAK6 Investments LLC8,700$7.15M0.19%––
Ironvine Capital Partners, LLC8,675$7.13M0.83%––
BNP Paribas Arbitrage, SA8,419$6.92M0.02%––
Nomura Asset Management Co Ltd8,073$6.64M0.04%––
US Bancorp7,987$6.57M0.01%––
Gulf International Bank (UK) Ltd7,882$6.48M0.09%––
Old National Bancorp7,844$6.45M0.26%––
Nomura Holdings Inc7,802$6.42M0.05%––
The PNC Financial Services Group, Inc.7,687$6.32M0.01%––
Tsai Capital Corp7,519$6.18M6.10%––