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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, Q4 2024

Institutional positions in Costar Group, Inc. as of Dec 31, 2024. 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
805
+47 vs. Q3 2024
Shares held
403.4M
+7.24M (+1.8%) vs. Q3 2024
Total value
$28.9B
−$1.01B (−3.4%) vs. Q3 2024
New holders
144
296 more added
Sold out
97
277 more reduced

15 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2024: new holders, sold out and not filed yet

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 holdersQ4 2024: 805 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 heldQ4 2024: $28.9B
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, Q4 2024

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2024.

Institutions holding CSGP in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Elo Mutual Pension Insurance Co39,744$2.85M0.06%+3,684+10.2%Added
Abn Amro Investment Solutions39,533$2.83M0.05%+3,144+8.6%Added
UniSuper Management Pty Ltd39,226$2.81M0.02%−17,769−31.2%Reduced
Mizuho Securities USA LLC38,855$2.78M0.05%+12,281+46.2%Added
Y-Intercept (Hong Kong) Ltd38,765$2.78M0.19%+19,247+98.6%Added
Ofi Invest Asset Management40,000$2.77M0.07%+40,000New
Allianz Asset Management GmbH38,252$2.74M0.00%+3,868+11.2%Added
Crestline Management, LP38,086$2.73M0.09%+38,086New
Yarbrough Capital, LLC37,950$2.72M0.10%00.0%Unchanged
Solidarilty Wealth, LLC37,917$2.71M0.71%+37,917New
Vanderbilt University37,755$2.70M0.53%+37,755New
Landmark Investment Partners, L.P.37,719$2.70M1.09%+37,719New
AE Wealth Management LLC37,608$2.69M0.02%−66−0.2%Reduced
Oppenheimer & Co Inc37,064$2.65M0.04%+2,152+6.2%Added
Profund Advisors LLC37,053$2.65M0.10%−1,616−4.2%Reduced
Cambridge Investment Research Advisors, Inc.35,890$2.57M0.01%−547−1.5%Reduced
Wealthfront Advisers LLC35,204$2.52M0.01%+4,260+13.8%Added
Oregon Public Employees Retirement Fund35,135$2.52M0.05%+50+0.1%Added
Papp L Roy & Associates34,740$2.49M0.29%−630−1.8%Reduced
Formula Growth Ltd34,000$2.43M0.82%00.0%Unchanged
Brinker Capital Investments, LLC33,851$2.42M0.02%+14,714+76.9%Added
Orion Portfolio Solutions, LLC33,851$2.42M0.02%+14,714+76.9%Added
Voloridge Investment Management, LLC33,549$2.40M0.01%+33,549New
Davidson Kahn Capital Management, LLC33,512$2.40M2.23%+33,512New
Nordea Investment Management AB32,902$2.38M0.00%+1,172+3.7%Added
Creative Planning32,979$2.36M0.00%+1,151+3.6%Added
BNP Paribas32,223$2.31M0.09%−581−1.8%Reduced
Stephens Inc32,166$2.30M0.03%+6,482+25.2%Added
Tredje AP-fonden32,061$2.30M0.02%−32,060−50.0%Reduced
Barbara Oil Co.32,000$2.29M0.95%00.0%Unchanged
Gulf International Bank (UK) Ltd31,964$2.29M0.06%−312−1.0%Reduced
AXA S.A.31,894$2.28M0.01%−3,233−9.2%Reduced
JustInvest LLC31,834$2.28M0.03%−2,053−6.1%Reduced
Sanctuary Advisors, LLC28,900$2.21M0.01%+2,422+9.1%Added
Exchange Traded Concepts, LLC30,818$2.21M0.04%+6,280+25.6%Added
Omers Administration Corp30,787$2.20M0.02%−5,994−16.3%Reduced
Scotia Capital Inc.30,727$2.20M0.01%−1,146−3.6%Reduced
Captrust Financial Advisors30,233$2.16M0.01%−3,058−9.2%Reduced
Boomfish Wealth Group, LLC30,192$2.16M1.31%+1,171+4.0%Added
Banque Pictet & Cie SA29,999$2.15M0.02%00.0%Unchanged
SlateStone Wealth, LLC29,417$2.11M0.21%+1,871+6.8%Added
DoubleLine ETF Adviser LP29,398$2.10M0.57%+146+0.5%Added
Bessemer Group Inc29,311$2.10M0.00%−670−2.2%Reduced
Park Avenue Securities LLC29,073$2.08M0.02%+542+1.9%Added
D.A. Davidson & Co.28,967$2.07M0.02%+1,053+3.8%Added
Man Group plc28,835$2.06M0.01%−61,805−68.2%Reduced
AQR Capital Management LLC28,471$2.04M0.00%+2,956+11.6%Added
Kentucky Retirement Systems28,162$2.02M0.06%−388−1.4%Reduced
Tower Research Capital LLC (TRC)28,125$2.01M0.04%+3,614+14.7%Added
Principal Securities, Inc.27,617$1.98M0.04%−399−1.4%Reduced
Kodai Capital Management LP27,307$1.95M0.08%+27,307New
Prelude Capital Management, LLC26,720$1.91M0.16%+14,820+124.5%Added
Malaga Cove Capital, LLC26,118$1.87M0.73%−734−2.7%Reduced
Federation des caisses Desjardins du Quebec25,759$1.84M0.01%−6,594−20.4%Reduced
Allianz SE25,512$1.83M0.05%00.0%Unchanged
Commonwealth Equity Services, LLC25,257$1.81M0.00%−655−2.5%Reduced
Hartford Investment Management Co25,230$1.81M0.06%−488−1.9%Reduced
Investment Management Corp of Ontario25,132$1.80M0.06%+11,638+86.2%Added
Ostrum Asset Management24,800$1.78M0.15%+18,274+280.0%Added
Natixis24,769$1.77M0.01%−2,544−9.3%Reduced
Moody National Bank Trust Division24,713$1.77M0.19%00.0%Unchanged
Woodline Partners LP24,620$1.76M0.01%+24,620New
Arrowstreet Capital, Limited Partnership24,577$1.76M0.00%+13,299+117.9%Added
LGT Fund Management Co Ltd.24,466$1.75M0.15%+6,814+38.6%Added
Icon Wealth Advisors, LLC24,359$1.74M0.14%+20,441+521.7%Added
Portside Wealth Group, LLC24,156$1.73M0.29%+24,156New
Harvest Fund Management Co., Ltd24,127$1.73M0.08%+5,249+27.8%Added
Sumitomo Life Insurance Co24,018$1.72M0.03%−467−1.9%Reduced
M&T Bank Corp23,980$1.72M0.01%−350−1.4%Reduced
B.O.S.S. Retirement Advisors, LLC23,977$1.72M0.48%+23,977New
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main23,826$1.71M0.00%−68,392−74.2%Reduced
Krilogy Financial LLC23,662$1.69M0.11%+8,387+54.9%Added
Quantinno Capital Management LP23,007$1.65M0.02%+8,081+54.1%Added
Caisse de Depot Et Placement du Quebec22,744$1.63M0.00%−24,995−52.4%Reduced
Norinchukin Bank, The22,687$1.62M0.03%+2,067+10.0%Added
Harbor Advisors LLC22,560$1.62M0.25%+2,500+12.5%Added
Verdence Capital Advisors LLC22,488$1.61M0.13%+15,161+206.9%Added
IMC-Chicago, LLC22,313$1.60M0.04%+9,422+73.1%Added
QRG Capital Management, Inc.22,204$1.59M0.02%−741−3.2%Reduced
Aurora Investment Managers, LLC.22,193$1.59M1.00%+336+1.5%Added
Susquehanna Fundamental Investments, LLC22,192$1.59M0.03%+22,192New
Securian Asset Management, Inc22,032$1.58M0.05%−604−2.7%Reduced
Crossmark Global Holdings, Inc.21,867$1.57M0.03%−51−0.2%Reduced
Liontrust Investment Partners LLP21,859$1.56M0.02%+21,859New
Wolverine Trading, LLC21,608$1.55M0.03%+15,664+263.5%Added
Maryland State Retirement & Pension System21,671$1.55M0.03%−1,492−6.4%Reduced
Intech Investment Management LLC21,632$1.55M0.02%+14,559+205.8%Added
Centaurus Financial, Inc.21,598$1.55M0.09%+756+3.6%Added
Benjamin Edwards Inc21,137$1.51M0.02%−1,384−6.1%Reduced
Hudson Bay Capital Management LP20,878$1.49M0.01%+20,878New
First Bank & Trust20,844$1.49M0.29%−2,379−10.2%Reduced
Nebula Research & Development LLC20,171$1.44M0.17%+4,699+30.4%Added
New Mexico Educational Retirement Board19,500$1.40M0.05%−500−2.5%Reduced
Dynamic Technology Lab Private Ltd19,179$1.37M0.22%+46+0.2%Added
Swiss Life Asset Management Ltd19,206$1.37M0.01%+13,741+251.4%Added
BI Asset Management Fondsmaeglerselskab A/S18,871$1.35M0.01%+1,132+6.4%Added
Candriam Luxembourg S.C.A.18,818$1.35M0.01%+2,054+12.3%Added
Markel Group Inc.SuperinvestorMarkel Group18,600$1.33M0.01%00.0%Unchanged
Keybank National Association18,527$1.33M0.01%−4,604−19.9%Reduced
Dai-Ichi Life Insurance Company, Ltd18,425$1.32M0.04%00.0%Unchanged