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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
Ironvine Capital Partners, LLC8,675$7.13M0.83%––
PEAK6 Investments LLC8,700$7.15M0.19%––
First Republic Investment Management, Inc.8,903$7.32M0.02%––
Edgestream Partners, L.P.8,954$7.36M0.41%––
Man Group plc8,955$7.36M0.03%––
State of Alaska, Department of Revenue9,204$7.56M0.08%––
Brown Advisory Inc9,467$7.78M0.01%––
Handelsbanken Fonder AB9,560$7.86M0.04%––
2Xideas AG9,609$7.90M0.87%––
Night Owl Capital Management, LLC9,952$8.18M1.66%––
Hexavest Inc.10,096$8.30M0.37%––
EULAV Asset Management10,304$8.47M0.23%––
Sumitomo Mitsui DS Asset Management Company, Ltd10,326$8.49M0.22%––
Mirae Asset Global Investments Co., Ltd.10,498$8.63M0.03%––
Qube Research & Technologies Ltd10,970$9.02M0.15%––
Varma Mutual Pension Insurance Co11,000$9.04M0.13%––
Squarepoint Ops LLC11,182$9.19M0.08%––
Arizona State Retirement System11,365$9.34M0.08%––
Erste Asset Management GmbH11,375$9.35M0.23%––
Advisor Group Holdings, Inc.11,421$9.39M0.02%––
Canada Pension Plan Investment Board11,729$9.64M0.01%––
Congress Asset Management Co11,841$9.73M0.09%––
KBC Group NV11,943$9.82M0.04%––
Storebrand Asset Management AS11,947$9.82M0.05%––
Gateway Investment Advisers LLC12,317$10.1M0.11%––
NN Investment Partners Holdings N.V.12,401$10.2M0.06%––
AMP Capital Investors Ltd12,484$10.2M0.05%––
Connor, Clark & Lunn Investment Management Ltd.12,656$10.4M0.06%––
Prudential Financial Inc12,695$10.4M0.02%––
Toronto Dominion Bank12,698$10.4M0.02%––
Stony Point Capital LLC12,750$10.5M3.36%––
Rice Hall James & Associates, LLC12,877$10.6M0.34%––
Robeco Institutional Asset Management B.V.12,959$10.7M0.03%––
Swedbank AB13,630$11.2M0.02%––
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund13,837$11.4M0.10%––
Pictet Asset Management Ltd14,151$11.6M0.01%––
Aviva PLC14,435$11.9M0.06%––
Vantage Investment Partners, LLC14,447$11.9M0.58%––
Treasurer of the State of North Carolina14,903$12.2M0.08%––
Two Sigma Investments, LP15,309$12.6M0.04%––
NS Partners Ltd15,423$12.7M0.73%––
Badgley Phelps & Bell Inc15,576$12.8M0.53%––
Ycg, LLC15,940$13.1M1.46%––
Marsico Capital Management LLC16,217$13.3M0.35%––
Spence Asset Management16,410$13.5M3.90%––
HSBC Holdings PLC16,497$13.6M0.02%––
Teachers Retirement System of the State of Kentucky16,535$13.6M0.13%––
Jupiter Asset Management Ltd16,810$13.8M0.14%––
Royal Bank of Canada17,035$14.0M0.00%––
AE Wealth Management LLC17,082$14.0M0.14%––
Archon Partners LLC17,100$14.1M1.96%––
Nordea Investment Management AB17,395$14.1M0.02%––
Alberta Investment Management Corp17,600$14.5M0.13%––
Spire Wealth Management17,830$14.6M0.39%––
Citadel Advisors LLC18,260$15.0M0.02%––
Oppenheimer Asset Management Inc.19,132$15.7M0.24%––
State of Wisconsin Investment Board19,528$16.1M0.03%––
Picton Mahoney Asset Management20,613$16.9M0.85%––
Boston Private Wealth LLC21,059$17.3M0.24%––
Public Employees Retirement System of Ohio21,062$17.3M0.07%––
Alyeska Investment Group, L.P.21,305$17.5M0.23%––
Bank of Montreal22,036$19.3M0.01%––
State of New Jersey Common Pension Fund D23,786$19.5M0.07%––
HRT Financial LP24,147$19.8M0.20%––
Alliancebernstein L.P.24,178$19.9M0.01%––
TCW Group Inc24,669$20.3M0.19%––
Islet Management, LP25,000$20.5M1.04%––
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.25,097$20.6M0.14%––
Scout Investments, Inc.27,972$23.0M0.35%––
Russell Investments Group, Ltd.28,149$23.1M0.04%––
Ashford Capital Management Inc28,403$23.3M2.18%––
Assenagon Asset Management S.A.28,929$23.8M0.12%––
Thrivent Financial for Lutherans28,951$23.8M0.05%––
Sandhill Capital Partners LLC28,971$23.8M2.02%––
Barclays PLC31,141$25.6M0.02%––
Asset Management One Co.,Ltd.31,366$25.8M0.10%––
Raymond James & Associates31,507$25.9M0.03%––
Royal London Asset Management Ltd31,675$26.1M0.12%––
Natixis31,983$26.3M0.09%––
Great West Life Assurance Co32,526$26.6M0.06%––
Jane Street Group, LLC32,409$26.6M0.07%––
AQR Capital Management LLC33,292$26.9M0.04%––
TIG Advisors, LLC32,979$27.1M1.04%––
American Assets Capital Advisers, LLC33,067$27.2M3.53%––
Susquehanna International Group, LLP33,255$27.3M0.04%––
Jennison Associates LLC33,747$27.7M0.02%––
Nissay Asset Management Corp35,226$29.0M0.29%––
FIL Ltd35,331$29.0M0.03%––
Panagora Asset Management Inc35,556$29.2M0.16%––
Stifel Financial Corp36,217$29.8M0.05%––
LMR Partners LLP36,753$30.2M0.75%––
Quantum Capital Management, LLC36,867$30.3M4.03%––
Marshall Wace North America L.P.37,486$30.8M0.13%––
Credit Suisse AG38,659$31.8M0.02%––
Parnassus Investments38,700$31.8M0.08%––
Rhumbline Advisers40,074$32.9M0.04%––
Neuberger Berman Group LLC40,279$33.0M0.03%––
Kornitzer Capital Management Inc42,629$35.0M0.56%––
UBS Group AG42,708$35.1M0.02%––
Arrowstreet Capital, Limited Partnership42,967$35.3M0.05%––