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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.

Q4 2025 vs. Q3 2025

How the institutions holding Costar Group, Inc. changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of CSGP: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders90518847−40
Shares413.6M2.59M422.7M+11.7M (+2.8%)
Value$34.9B$218.8M$28.4B−$6.23B (−18.0%)

18 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (103)

Institutions that held Costar Group, Inc. at the end of Q4 2025 but not at the end of Q3 2025.

Showing the largest 100 of 103 by value.

Institutions new to CSGP in Q4 2025
InstitutionSharesValue% of portfolio
Norges Bank7,090,495$476.8M0.05%
Nomura Asset Management International Inc.3,909,161$262.9M0.40%
Capitolis Liquid Global Markets LLC1,184,000$79.6M0.47%
Junto Capital Management LP615,998$41.4M0.93%
ION Fund Management Ltd461,000$31.0M3.95%
Tudor Investment Corp Et Al205,000$13.8M0.08%
CIBC World Markets Corp186,141$12.5M0.06%
BSN Capital Partners Ltd150,857$11.8M0.56%
PensionDanmark Pensionsforsikringsaktieselskab147,170$9.90M0.09%
ExodusPoint Capital Management, LP139,296$9.37M0.10%
Lighthouse Investment Partners, LLC124,519$8.37M0.28%
Clearline Capital LP118,041$7.94M0.60%
Greenvale Capital LLP100,000$6.72M0.63%
Glenmede Trust Co NA77,034$5.18M0.02%
Eurizon Capital SGR S.p.A.64,276$4.32M0.01%
Katamaran Capital LLP36,651$2.46M1.86%
Quantitative Investment Management, LLC35,749$2.40M0.23%
Weiss Asset Management LP34,320$2.31M0.03%
Delta Global Management LP31,841$2.14M0.16%
Numerai GP LLC30,135$2.03M0.24%
Twin Tree Management, LP22,466$1.51M0.15%
Third View Private Wealth, LLC21,836$1.47M0.20%
Skylands Capital, LLC17,050$1.15M0.16%
Edgestream Partners, L.P.15,805$1.06M0.03%
North Dakota State Investment Board14,316$962.6K0.04%
Entropy Technologies, LP13,121$882.3K0.05%
Fideuram - Intesa Sanpaolo Private Banking S.P.A.11,998$806.7K0.03%
Volterra Technologies LP11,925$801.8K0.82%
Avanza Fonder AB11,583$778.8K0.02%
TradeLink Capital LLC11,356$764.0K6.11%
Odyssean, LLC11,342$762.6K0.55%
Wahed Invest LLC10,975$738.0K0.10%
AXA S.A.10,812$727.0K0.34%
Inceptionr LLC9,598$645.4K0.18%
Laird Norton Trust Company, LLC9,109$612.5K0.01%
Bridgewater Associates, LP9,020$606.5K0.00%
Warren Averett Asset Management, LLC8,948$601.7K0.00%
Wheels Up Wealth, Inc.6,940$466.6K0.43%
Balyasny Asset Management LLC6,343$426.5K0.00%
TCW Group Inc6,265$421.3K0.00%
LRT Capital Management, LLC6,247$420.0K0.36%
Argos Wealth Advisors, LLC5,608$377.1K0.11%
Oakum Bay Capital LLC5,500$369.8K0.19%
EntryPoint Capital, LLC5,439$365.7K0.14%
Syon Capital LLC5,160$347.0K0.02%
Aigen Investment Management, LP5,078$341.4K0.08%
V-Square Quantitative Management LLC5,070$340.9K0.04%
Pitcairn Wealth Advisors LLC4,610$310.0K0.03%
Journey Retirement Planning & Investment Management LLC4,314$290.1K0.06%
Picton Mahoney Asset Management4,140$278.4K0.00%
PCM Encore, LLC3,990$268.3K0.06%
Atom Investors LP3,959$266.2K0.02%
Cercano Management LLC3,637$244.6K0.01%
VARCOV Co.3,371$226.7K0.09%
RMB Capital Management, LLC3,359$225.9K0.00%
SG Trading Solutions, LLC3,237$218.0K0.05%
Havemeyer Place LP3,225$216.8K0.04%
Dara Capital US, Inc.1,732$116.5K0.10%
Eurizon SLJ Capital Ltd1,244$83.6K0.03%
Pinnacle Wealth Planning Services, Inc.1,138$76.5K0.01%
DV Trading LLC1,088$73.2K0.01%
Fideuram Asset Management (Ireland) dac945$72.8K0.01%
Vega Investment Solutions629$42.3K0.01%
DV Equities, LLC590$39.7K0.01%
Lloyd Advisory Services, LLC.427$28.7K0.01%
Reflection Asset Management404$27.2K0.02%
Montag A & Associates Inc300$20.2K0.00%
Garton & Associates Financial Advisors LLC274$18.4K0.01%
Basecamp Wealth Advisors LLC223$15.0K0.00%
Birchwood Financial Partners, Inc.220$14.8K0.01%
St Germain D J Co Inc176$11.8K0.00%
CGC Financial Services, LLC166$11.2K0.00%
Swiss Re Ltd162$10.9K0.00%
Purpose Unlimited Inc.132$8.87K0.00%
Elyxium Wealth, LLC114$7.67K0.00%
Arlington Trust Co LLC110$7.40K0.00%
Meramec Financial Planners, LLC146$7.34K0.00%
Keating Financial Advisory Services, Inc.101$6.79K0.00%
Flagship Harbor Advisors, LLC100$6.72K0.00%
Torren Management, LLC92$6.19K0.00%
Clayton Financial Group LLC77$5.18K0.00%
Kemnay Advisory Services Inc.77$5.18K0.00%
Prosperity Bancshares Inc64$4.30K0.00%
IFC & Insurance Marketing, Inc.59$4.00K0.00%
Cornerstone Financial Management LLC53$3.56K0.00%
North Star Investment Management Corp.43$2.89K0.00%
Costello Asset Management, INC30$2.02K0.00%
Rachor Investment Advisory Services, LLC29$1.95K0.00%
Signature Equity Partners, LLC29$1.95K0.00%
Turning Point Benefit Group, Inc.26$1.75K0.00%
Thurston, Springer, Miller, Herd & Titak, Inc.25$1.68K0.00%
Crewe Advisors LLC24$1.61K0.00%
Wilkerson Advisory Group LLC21$1.41K0.00%
SHP Wealth Management18$1.21K0.00%
IMG Wealth Management, Inc.17$1.14K0.00%
Independence Bank of Kentucky16$1.08K0.00%
Stephens Consulting, LLC15$1.01K0.00%
Navalign, LLC14$9410.00%
1015 Capital Partners, LLC8$5380.00%
Luken Investment Analytics, LLC5$3360.00%

Sold out (143)

Institutions that held Costar Group, Inc. at the end of Q3 2025 and filed for Q4 2025 without it.

Showing the largest 100 of 143 by value.

Institutions that sold out of CSGP in Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Telemark Asset Management, LLC550,000$46.4M
Frontier Capital Management Co LLC490,623$41.4M
Arrowstreet Capital, Limited Partnership453,897$38.3M
Intrinsic Edge Capital Management LLC224,297$18.9M
Acadian Asset Management LLC162,515$13.7M
Gillson Capital LP149,319$12.6M
Hood River Capital Management LLC138,064$11.6M
Qsemble Capital Management, LP76,982$6.49M
Tsai Capital Corp58,899$4.97M
Lakehouse Capital Pty Ltd58,408$4.93M
Summit Wealth Group LLC110,820$4.75M
Archon Partners LLC54,000$4.56M
Baer Investment Advisory LLC52,517$4.43M
BCJ Capital Management, LLC45,221$3.82M
Kids Capital Management, L.P.40,000$3.37M
Caption Management, LLC38,290$3.23M
Generate Investment Management Ltd37,573$3.17M
Kampmann Melissa S.28,900$2.44M
Susquehanna Fundamental Investments, LLC28,201$2.38M
Politan Capital Management LP27,635$2.33M
Blue Capital, Inc.27,617$2.33M
Pitcairn Co26,328$2.22M
WoodTrust Financial Corp25,540$2.15M
First Financial Bankshares Inc23,511$1.98M
Shaker Investments LLC21,583$1.82M
Graham Capital Management, L.P.20,024$1.69M
Dark Forest Capital Management LP14,497$1.22M
Meeder Asset Management Inc14,042$1.18M
Jump Financial, LLC13,574$1.15M
Ascent Group, LLC11,753$991.6K
CenterBook Partners LP10,808$911.9K
Everence Capital Management Inc10,633$897.0K
Magnetar Financial LLC9,878$833.4K
Dynamic Technology Lab Private Ltd9,719$820.0K
Integrity Alliance, LLC.9,566$807.1K
Stratos Wealth Partners, LTD.9,318$786.2K
CAPROCK Group, Inc.8,181$732.1K
Altfest L J & Co Inc7,562$638.0K
Susquehanna Portfolio Strategies, LLC7,372$622.0K
Advisors Preferred, LLC7,377$615.8K
Enhancing Capital LLC7,030$593.1K
Vise Technologies, Inc.6,972$588.2K
Catalytic Wealth RIA, LLC6,716$566.6K
Virtu Financial LLC6,526$551.0K
Chesapeake Capital Corp6,194$522.6K
NorthRock Partners, LLC6,001$506.3K
17 Capital Partners, LLC5,921$499.6K
AXS Investments LLC5,867$495.0K
Stevens Capital Management LP5,550$468.0K
Brookstone Capital Management5,495$463.6K
WSFS Capital Management, LLC5,474$461.8K
World Equity Group, Inc.5,096$429.9K
Voleon Capital Management LP4,866$410.5K
Highland Capital Management Fund Advisors, L.P.4,715$397.8K
Apollon Wealth Management, LLC4,608$388.8K
Pallas Capital Advisors LLC4,484$378.3K
FineMark National Bank & Trust4,350$367.0K
Wallace Advisory Group, LLC4,537$364.8K
Dynasty Wealth Management, LLC4,094$345.4K
Buckingham Strategic Partners4,957$339.7K
Main Street Financial Solutions, LLC3,974$335.3K
Bayforest Capital Ltd3,835$323.6K
Independent Advisor Alliance3,716$313.5K
Skopos Labs, Inc.3,848$310.8K
PUREfi Wealth, LLC3,647$307.7K
Octavia Wealth Advisors, LLC3,626$305.9K
Sagespring Wealth Partners, LLC3,623$305.7K
HBK Sorce Advisory LLC3,887$292.3K
Landscape Capital Management, L.L.C.3,426$289.1K
HT Partners LLC3,343$282.0K
Fifth Third Wealth Advisors LLC3,304$278.8K
Advisory Services Network, LLC3,296$278.1K
TownSquare Capital, LLC3,246$273.9K
Keel Point, LLC3,208$270.7K
Premier Path Wealth Partners, LLC3,056$257.8K
Proficio Capital Partners LLC2,968$250.4K
IHT Wealth Management, LLC2,965$250.2K
Meeder Advisory Services, Inc.2,964$250.1K
Greenleaf Trust2,957$249.5K
Contravisory Investment Management, Inc.2,931$247.3K
Crestwood Advisors Group LLC2,931$247.3K
Kingswood Wealth Advisors, LLC2,918$246.2K
Commerzbank Aktiengesellschaft2,912$246.0K
Wedmont Private Capital3,044$245.3K
Texas Capital Bank Wealth Management Services Inc2,856$241.0K
Manuka Financial, LLC2,824$238.3K
Castleview Partners, LLC2,821$238.0K
KCM Investment Advisors LLC2,720$229.5K
Evergreen Capital Management LLC2,710$228.6K
Panagora Asset Management Inc2,650$223.6K
Mather Group, LLC.2,648$223.4K
Valeo Financial Advisors, LLC2,607$220.0K
OneAscent Financial Services LLC2,581$217.8K
Independent Financial Group, LLC2,567$216.6K
Paul Damon & Associates, Inc.2,505$211.3K
Flossbach Von Storch AG2,500$210.9K
Archetype Wealth Partners2,467$208.0K
Perfromance Wealth Partners, LLC2,405$202.9K
Adell Harriman & Carpenter Inc2,405$202.9K
Fukoku Mutual Life Insurance Co2,398$202.3K

Not filed for Q4 2025 yet (18)

Institutions that held Costar Group, Inc. at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CSGP in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Bares Capital Management, Inc.1,226,251$103.5M
Ion Asset Management Ltd.534,000$45.1M
AXA Investment Managers S.A.370,740$31.3M
CIBC Bancorp USA Inc.185,242$15.6M
Glenmede Investment Management, LP87,077$7.35M
Thematics Asset Management79,915$6.74M
Ownership Capital B.V.50,817$4.29M
American Assets Capital Advisers, LLC24,364$2.06M
Wolverine Trading, LLC21,782$1.83M
Kathleen S. Wright Associates Inc.4,700$375.1K
Wetherby Asset Management Inc4,318$364.3K
Ridgewood Investments LLC3,145$265.3K
Promus Capital, LLC759$64.0K
Hemington Wealth Management312$26.0K
Shell Asset Management Co186$16.0K
Guerra Advisors Inc69$5.82K
Binnacle Investments Inc32$2.70K
Texas Capital Bancshares Inc20$1.69K