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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, Q2 2025

Institutional positions in Costar Group, Inc. as of Jun 30, 2025. 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
873
+26 vs. Q1 2025
Shares held
424.8M
−3.49M (−0.8%) vs. Q1 2025
Total value
$34.2B
+$258.5M (+0.8%) vs. Q1 2025
New holders
101
355 more added
Sold out
75
315 more reduced

11 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: 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 holdersQ2 2025: 873 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 heldQ2 2025: $34.2B
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, Q2 2025

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q1 2025.

Institutions holding CSGP in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Snowden Capital Advisors LLC8,914$716.7K0.02%+424+5.0%Added
Patten & Patten Inc8,561$688.3K0.04%+30.0%Added
CWM, LLC8,391$675.0K0.00%−399−4.5%Reduced
Empirical Finance, LLC8,376$673.4K0.04%+114+1.4%Added
Grantham, Mayo, Van Otterloo & Co. LLC8,373$673.2K0.00%−431−4.9%Reduced
Inceptionr LLC8,202$659.4K0.15%+8,202New
Assenagon Asset Management S.A.8,164$656.4K0.00%+214+2.7%Added
Yarbrough Capital, LLC8,010$644.0K0.02%−4,800−37.5%Reduced
Americana Partners, LLC7,885$634.0K0.02%+70+0.9%Added
Baker Tilly Wealth Management, LLC7,789$626.2K0.22%−453−5.5%Reduced
Oarsman Capital, Inc.7,766$624.4K0.10%+201+2.7%Added
Kovitz Investment Group Partners, LLC7,664$616.2K0.00%−505−6.2%Reduced
Private Advisor Group, LLC7,632$613.6K0.00%−284−3.6%Reduced
Trust Point Inc.7,453$599.2K0.06%−2,982−28.6%Reduced
United Capital Financial Advisers, LLC7,378$593.2K0.00%−845−10.3%Reduced
Susquehanna Portfolio Strategies, LLC7,372$592.7K0.01%+3,842+108.8%Added
Walleye Capital LLC7,307$587.5K0.01%−10,219−58.3%Reduced
Baron Wealth Management LLC7,159$575.6K0.20%−636−8.2%Reduced
Everhart Financial Group, Inc.7,150$574.9K0.07%+869+13.8%Added
Vise Technologies, Inc.7,036$565.7K0.02%+7,036New
Fidelis Capital Partners, LLC5,853$563.6K0.05%−5−0.1%Reduced
Peapack Gladstone Financial Corp6,965$560.0K0.01%+1,217+21.2%Added
Farringdon Capital, Ltd.6,957$559.3K0.19%+6,957New
Enhancing Capital LLC6,880$553.2K0.42%−30.0%Reduced
First Manhattan Co6,847$550.5K0.00%00.0%Unchanged
Smartleaf Asset Management LLC6,793$548.6K0.05%−110−1.6%Reduced
Hengehold Capital Management LLC6,789$545.8K0.05%00.0%Unchanged
Moran Wealth Management, LLC6,769$544.2K0.02%−912−11.9%Reduced
Steward Partners Investment Advisory, LLC6,749$542.6K0.00%−611−8.3%Reduced
Merit Financial Group, LLC6,670$536.3K0.01%+2,519+60.7%Added
Everence Capital Management Inc6,590$530.0K0.03%−5,800−46.8%Reduced
IVC Wealth Advisors LLC6,457$519.1K0.25%−363−5.3%Reduced
Parallel Advisors, LLC6,456$519.1K0.01%+285+4.6%Added
Ostrum Asset Management6,453$518.8K0.02%−1,522−19.1%Reduced
Cresset Asset Management, LLC6,428$516.8K0.00%−5,075−44.1%Reduced
Mirabella Financial Services LLP6,333$511.4K0.05%−20,859−76.7%Reduced
Diversify Wealth Management, LLC5,763$509.8K0.03%−553−8.8%Reduced
Buckhead Capital Management LLC6,303$506.8K0.20%00.0%Unchanged
STF Management LP6,269$504.0K0.20%+128+2.1%Added
HighPoint Advisor Group LLC6,258$503.1K0.03%−54−0.9%Reduced
ING Groep NV6,245$502.1K0.00%−176,507−96.6%Reduced
Integrated Wealth Concepts LLC6,171$496.2K0.00%+1,382+28.9%Added
GWM Advisors LLC6,168$495.9K0.00%+4,695+318.7%Added
Harbor Investment Advisory, LLC6,100$490.4K0.04%−68−1.1%Reduced
Perigon Wealth Management, LLC6,020$484.0K0.01%+339+6.0%Added
Siemens Fonds Invest GmbH5,973$480.2K0.03%+1,184+24.7%Added
Kathleen S. Wright Associates Inc.5,200$478.4K0.19%−230−4.2%Reduced
Hilltop Holdings Inc.5,927$476.5K0.03%−237−3.8%Reduced
WSFS Capital Management, LLC5,924$476.3K0.03%+795+15.5%Added
Intellectus Partners, LLC5,921$476.0K0.10%+82+1.4%Added
17 Capital Partners, LLC5,908$475.0K0.27%+1,775+42.9%Added
Altfest L J & Co Inc5,900$474.4K0.06%−3,267−35.6%Reduced
Atria Wealth Solutions, Inc.5,851$470.9K0.01%−4,105−41.2%Reduced
Canandaigua National Bank & Trust Co5,805$466.7K0.04%+536+10.2%Added
Marks Group Wealth Management, Inc5,771$464.0K0.04%−161−2.7%Reduced
Prestige Wealth Management Group LLC5,765$463.5K0.09%+23+0.4%Added
Emerald Advisers, LLC5,763$463.3K0.02%+110+1.9%Added
Neo Ivy Capital Management5,752$462.5K0.15%−58−1.0%Reduced
Michael B. Yongue5,684$457.0K0.34%+372+7.0%Added
Coldstream Capital Management Inc5,627$452.4K0.01%−382−6.4%Reduced
Integrated Investment Consultants, LLC5,403$434.4K0.09%−39−0.7%Reduced
Howard Bailey Securities, LLC5,379$432.5K0.13%+65+1.2%Added
Buttonwood Financial Advisors Inc.5,362$431.1K0.17%+5,362New
Canada Post Corp Registered Pension Plan5,360$430.9K0.03%+5,360New
Wedbush Securities Inc5,341$429.0K0.01%+312+6.2%Added
Aprio Wealth Management, LLC5,299$426.1K0.05%+5,299New
Citizens Financial Group Inc5,296$425.8K0.01%+554+11.7%Added
ICICI Prudential Asset Management Co Ltd5,287$425.1K0.05%+27+0.5%Added
Adviser Investments LLC5,224$420.0K0.01%+34+0.7%Added
Penserra Capital Management LLC5,189$415.0K0.01%−150−2.8%Reduced
Ramiah Investment Group5,141$413.3K0.44%+5,141New
Wallace Advisory Group, LLC5,201$412.1K0.30%+126+2.5%Added
Beacon Pointe Advisors, LLC5,034$404.7K0.00%+652+14.9%Added
Huntington National Bank4,908$394.6K0.00%+295+6.4%Added
Wealth Alliance4,873$391.8K0.04%−433−8.2%Reduced
Forum Financial Management, LP4,838$389.0K0.01%+755+18.5%Added
One Wealth Capital Management, LLC4,790$385.1K0.18%+548+12.9%Added
Signaturefd, LLC4,788$385.0K0.01%−939−16.4%Reduced
Checchi Capital Advisers, LLC4,684$376.6K0.03%+34+0.7%Added
Gotham Asset Management, LLC4,663$374.9K0.00%+4,663New
Tectonic Advisors LLC4,662$374.8K0.02%+565+13.8%Added
NorthRock Partners, LLC4,599$369.8K0.01%−641−12.2%Reduced
Chatham Capital Group, Inc.4,556$366.3K0.06%−375−7.6%Reduced
Quantitative Investment Management, LLC4,556$366.0K0.05%+4,556New
Diversify Advisory Services, LLC4,132$365.5K0.01%−82−1.9%Reduced
Proficio Capital Partners LLC4,529$364.1K0.02%+82+1.8%Added
Plato Investment Management Ltd4,469$358.0K0.03%−3,004−40.2%Reduced
Brown Miller Wealth Management, LLC4,444$357.3K0.11%00.0%Unchanged
Parkside Financial Bank & Trust4,431$356.3K0.04%−107−2.4%Reduced
Pallas Capital Advisors LLC4,424$355.7K0.01%+853+23.9%Added
Three Seasons Wealth, LLC4,405$354.2K0.04%+179+4.2%Added
Main Street Financial Solutions, LLC4,378$352.0K0.03%−8−0.2%Reduced
Pembroke Management, LTD4,357$350.3K0.04%+4,357New
FineMark National Bank & Trust4,350$349.7K0.01%+1,600+58.2%Added
Apollon Wealth Management, LLC4,332$348.3K0.01%+247+6.0%Added
Oak Thistle LLC4,314$346.8K0.05%+4,314New
NBC Securities, Inc.4,277$343.0K0.03%+393+10.1%Added
Flputnam Investment Management Co4,237$340.7K0.01%+7+0.2%Added
Apriem Advisors4,208$338.3K0.04%00.0%Unchanged
CCG Wealth Management, LLC4,171$335.3K0.18%−19−0.5%Reduced