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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.

Q2 2025 vs. Q1 2025

How the institutions holding Costar Group, Inc. changed between Q1 2025 and Q2 2025.

All holders in Q2 2025All holders in Q1 2025

13F holders of CSGP: Q1 2025 compared with Q2 2025
MeasureQ1 2025Of which not filed for Q2 2025Q2 2025Change
Holders85811873+26
Shares428.6M256.2K424.8M−3.49M (−0.8%)
Value$33.9B$20.3M$34.2B+$258.5M (+0.8%)

11 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (101)

Institutions that held Costar Group, Inc. at the end of Q2 2025 but not at the end of Q1 2025.

Showing the largest 100 of 101 by value.

Institutions new to CSGP in Q2 2025
InstitutionSharesValue% of portfolio
Viking Global Investors LPSuperinvestorViking Global Investors3,218,568$258.8M0.75%
SG Capital Management LLC940,155$75.6M6.43%
Parnassus Investments655,398$52.7M0.12%
Intrinsic Edge Capital Management LLC263,984$21.2M3.20%
Swedbank AB249,927$20.1M0.02%
Tribune Investment Group LP180,000$14.5M7.13%
Marshall Wace, LLP126,698$10.2M0.01%
Sone Capital Management, LLC115,121$9.26M0.85%
Glenmede Investment Management, LP94,179$7.57M0.04%
Generate Investment Management Ltd78,427$6.31M0.35%
Qsemble Capital Management, LP54,196$4.36M0.42%
XTX Topco Ltd33,633$2.70M0.11%
Castle Hook Partners LP31,593$2.54M0.04%
Mizuho Securities USA LLC29,162$2.34M0.05%
Jump Financial, LLC28,181$2.27M0.03%
Two Sigma Investments, LP26,299$2.11M0.00%
Park Avenue Securities LLC26,232$2.11M0.02%
Politan Capital Management LP24,891$2.00M0.14%
Ethic Inc.22,918$1.85M0.03%
SummitTX Capital, L.P.22,585$1.82M0.08%
Louisbourg Investments Inc.26,530$1.66M0.39%
Moors & Cabot, Inc.20,233$1.63M0.08%
Concentric Capital Strategies, LP16,758$1.35M0.08%
Winton Group Ltd15,285$1.23M0.06%
TradeLink Capital LLC15,081$1.21M4.30%
Waterway Wealth Management, LLC14,800$1.19M0.36%
Bayesian Capital Management, LP12,100$972.8K0.15%
Westerkirk Capital Inc.11,700$940.7K0.12%
Scott Marsh Financial, LLC11,350$912.5K0.34%
Turtle Creek Wealth Advisors, LLC9,753$784.1K0.09%
Versor Investments LP9,300$747.7K0.13%
Inceptionr LLC8,202$659.4K0.15%
Vise Technologies, Inc.7,036$565.7K0.02%
Farringdon Capital, Ltd.6,957$559.3K0.19%
Buttonwood Financial Advisors Inc.5,362$431.1K0.17%
Canada Post Corp Registered Pension Plan5,360$430.9K0.03%
Aprio Wealth Management, LLC5,299$426.1K0.05%
Ramiah Investment Group5,141$413.3K0.44%
Gotham Asset Management, LLC4,663$374.9K0.00%
Quantitative Investment Management, LLC4,556$366.0K0.05%
Pembroke Management, LTD4,357$350.3K0.04%
Oak Thistle LLC4,314$346.8K0.05%
Wetherby Asset Management Inc4,056$326.1K0.01%
DRW Securities, LLC3,823$307.4K0.02%
Savant Capital, LLC3,637$292.4K0.00%
GTS Securities LLC3,477$279.6K0.01%
Pensionmark Financial Group, LLC3,411$274.2K0.01%
Dynamic Technology Lab Private Ltd3,308$266.0K0.04%
Index Fund Advisors, Inc.3,278$263.6K0.01%
Voleon Capital Management LP3,249$261.2K0.01%
SageView Advisory Group, LLC2,597$242.5K0.01%
Salvus Wealth Management, LLC3,007$241.8K0.14%
Family Wealth Group, LLC2,920$234.8K0.18%
EntryPoint Capital, LLC2,831$227.6K0.11%
Premier Path Wealth Partners, LLC2,812$226.1K0.03%
Boothbay Fund Management, LLC2,788$224.2K0.01%
Valeo Financial Advisors, LLC2,715$218.3K0.01%
Catalytic Wealth RIA, LLC2,687$216.0K0.02%
Entropy Technologies, LP2,661$213.9K0.02%
Patton Fund Management, Inc.2,659$213.8K0.05%
Fullcircle Wealth LLC2,195$212.5K0.08%
Two Sigma Securities, LLC2,545$204.6K0.03%
City National Bank of Florida2,534$203.7K0.15%
Simplicity Wealth,LLC2,534$203.7K0.01%
Flossbach Von Storch AG2,500$201.0K0.00%
Global Retirement Partners, LLC1,863$149.8K0.00%
Osterweis Capital Management Inc1,817$146.1K0.01%
MUFG Securities EMEA plc1,242$99.9K0.00%
Onefund, LLC1,059$85.0K0.06%
Twin Peaks Wealth Advisors, LLC765$67.7K0.02%
Chilton Capital Management LLC643$51.7K0.00%
Optiver Holding B.V.472$37.9K0.00%
Mount Yale Investment Advisors, LLC447$35.9K0.00%
Quarry LP395$31.8K0.01%
Atlantic Trust, LLC241$19.4K0.00%
Atlantic Union Bankshares Corp232$18.7K0.00%
Ameritas Advisory Services, LLC194$15.6K0.00%
Westside Investment Management, Inc.180$14.7K0.00%
Boreal Capital Management LLC170$13.7K0.01%
Quaker Wealth Management, LLC150$12.1K0.00%
Riggs Asset Managment Co. Inc.128$10.3K0.00%
Kilter Group LLC115$9.25K0.00%
Rational Advisors LLC108$8.68K0.00%
MTM Investment Management, LLC93$7.48K0.00%
Howard Hughes Medical Institute91$7.32K0.00%
Webster Bank, N. A.88$7.08K0.00%
HM Payson & Co50$4.02K0.00%
Salomon & Ludwin, LLC48$3.91K0.00%
Country Trust Bank41$3.30K0.00%
Essential Partners LLC31$2.49K0.00%
Evergreen Private Wealth LLC23$1.85K0.00%
Solstein Capital, LLC19$1.53K0.00%
Stephens Consulting, LLC15$1.21K0.00%
Trifecta Capital Advisors, LLC12$9650.00%
Rialto Wealth Management, LLC6$4830.00%
Sound Income Strategies, LLC5$4020.00%
DecisionPoint Financial, LLC4$3280.00%
Tortoise Investment Management, LLC4$3220.00%
Legacy Investment Solutions, LLC3$2420.00%
Scarborough Advisors, LLC1$800.00%

Sold out (75)

Institutions that held Costar Group, Inc. at the end of Q1 2025 and filed for Q2 2025 without it.

Institutions that sold out of CSGP in Q2 2025
InstitutionShares, Q1 2025Value, Q1 2025
TOMS Capital Investment Management LP3,508,000$277.9M
Soroban Capital Partners LP1,050,747$83.3M
Nomura Holdings Inc363,097$28.8M
Baskin Financial Services Inc.279,646$22.2M
Ruffer LLP270,412$21.4M
Waterfront Capital Partners, LLC125,000$9.90M
Corebridge Financial, Inc.122,624$9.72M
PEAK6 LLC101,555$8.05M
Twin Tree Management, LP96,784$7.67M
Edgestream Partners, L.P.90,987$7.21M
Ofi Invest Asset Management40,000$2.93M
Simplex Trading, LLC25,214$2.00M
Procyon Private Wealth Partners, LLC21,649$1.72M
IMC-Chicago, LLC17,850$1.41M
Allstate Corp17,582$1.39M
Brevan Howard Capital Management LP16,444$1.30M
Legacy Advisors, LLC14,101$1.12M
Botty Investors LLC13,174$1.04M
Papamarkou Wellner Asset Management inc.13,145$1.04M
Clear Street Markets LLC13,000$1.03M
Aster Capital Management (DIFC) Ltd11,807$900.3K
Aspen Grove Capital, LLC10,078$798.5K
United Services Automobile Association9,336$740.4K
Sig Brokerage, LP8,735$692.1K
Thoroughbred Financial Services, LLC6,893$546.0K
Meiji Yasuda Asset Management Co Ltd.6,409$507.8K
Quadrant Capital Group LLC6,136$486.2K
Alaska Permanent Fund Corp6,408$475.3K
Sage Mountain Advisors LLC4,095$324.5K
Los Angeles Capital Management LLC3,877$307.2K
Balyasny Asset Management LLC3,812$302.0K
Fiduciary Trust Co3,712$294.1K
Landscape Capital Management, L.L.C.3,700$293.2K
Wealth Management Associates, Inc.3,547$281.0K
Shay Capital LLC3,500$277.3K
Arrowpoint Investment Partners (Singapore) Pte. Ltd.3,300$261.5K
Frank, Rimerman Advisors LLC3,277$259.6K
Group One Trading, L.P.3,264$258.6K
Strive Asset Management, LLC3,244$257.0K
Camden Capital, LLC3,228$255.8K
PFG Investments, LLC2,956$234.2K
New World Advisors LLC2,907$230.3K
MBL Wealth, LLC2,724$215.8K
Wrapmanager Inc2,680$212.3K
Claret Asset Management Corp–$209.0K
Impact Investors, Inc2,616$207.3K
McDaniel Terry & Co2,557$203.0K
Meadow Creek Wealth Advisors LLC2,547$201.8K
Csenge Advisory Group2,517$200.6K
Johnson Financial Group, Inc.1,936$153.4K
Paradigm Asset Management Co LLC1,800$142.6K
TruNorth Capital Management, LLC1,003$79.5K
Focused Wealth Management, Inc1,000$79.2K
Belvedere Trading LLC978$77.5K
Bayforest Capital Ltd369$29.2K
Wayfinding Financial, LLC371$29.0K
Riverview Trust Co360$28.5K
Hexagon Capital Partners LLC347$27.5K
Center for Financial Planning, Inc.220$17.4K
Headlands Technologies LLC175$13.9K
Saudi Central Bank166$13.2K
Cherry Tree Wealth Management, LLC147$11.6K
Quent Capital, LLC133$10.5K
West Branch Capital LLC100$7.92K
Beacon Capital Management, LLC82$6.50K
Washington Trust Co30$2.38K
Thomas J. Herzfeld Advisors, Inc.25$1.98K
Global Financial Private Client, LLC24$1.90K
Winnow Wealth LLC12$938
Chesapeake Asset Management LLC10$792
Carolinas Wealth Consulting LLC10$792
Bear Mountain Capital, Inc.4$331
Continuum Advisory, LLC4$317
Stonebridge Financial Group, LLC4$317
GoalVest Advisory LLC3$238

Not filed for Q2 2025 yet (11)

Institutions that held Costar Group, Inc. at the end of Q1 2025 and haven't filed a 13F for Q2 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding CSGP in Q1 2025 that haven't filed for Q2 2025
InstitutionShares, Q1 2025Value, Q1 2025
Glenmede Trust Co NA83,050$6.58M
Rakuten Investment Management, Inc.53,501$4.24M
Orion Portfolio Solutions, LLC40,057$3.17M
Mizuho Securities USA LLC33,744$2.67M
Credit Agricole S A17,048$1.35M
Davis Capital Management14,437$1.14M
Schechter Investment Advisors, LLC6,303$499.4K
CAPROCK Group, Inc.5,448$431.7K
Lindbrook Capital, LLC2,513$199.1K
Sandy Spring Bank32$2.54K
Nova Wealth Management, Inc.26$2.06K