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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 2025

Institutional positions in Costar Group, Inc. as of Mar 31, 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
858
+66 vs. Q4 2024
Shares held
428.6M
+26.5M (+6.6%) vs. Q4 2024
Total value
$33.9B
+$5.15B (+17.9%) vs. Q4 2024
New holders
141
378 more added
Sold out
75
263 more reduced

13 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2025: 858 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 2025: $33.9B
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, Q1 2025

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2024.

Institutions holding CSGP in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Activest Wealth Management37$2.93K0.00%+37New
Graney & King, LLC35$2.77K0.00%+35New
Sandy Spring Bank32$2.54K0.00%00.0%Unchanged
Binnacle Investments Inc32$2.54K0.00%+32New
DiNuzzo Private Wealth, Inc.31$2.46K0.00%+5+19.2%Added
Eastern Bank31$2.46K0.00%+31New
Washington Trust Co30$2.38K0.00%00.0%Unchanged
N.E.W. Advisory Services LLC30$2.38K0.00%+30New
Cape Investment Advisory, Inc.29$2.30K0.00%−11−27.5%Reduced
Nova Wealth Management, Inc.26$2.06K0.00%+26New
CKW Financial Group20$2.00K0.00%00.0%Unchanged
SJS Investment Consulting Inc.25$1.98K0.00%+6+31.6%Added
Thomas J. Herzfeld Advisors, Inc.25$1.98K0.00%+25New
Global Financial Private Client, LLC24$1.90K0.00%+18+300.0%Added
NVWM, LLC24$1.90K0.00%+7+41.2%Added
Bruce G. Allen Investments, LLC21$1.66K0.00%00.0%Unchanged
Clark Wealth Partners21$1.66K0.00%00.0%Unchanged
TFC Financial Management21$1.66K0.00%+11+110.0%Added
Dogwood Wealth Management LLC21$1.66K0.00%+21New
Park Square Financial Group, LLC20$1.58K0.00%00.0%Unchanged
Principia Wealth Advisory, LLC18$1.42K0.00%+9+100.0%Added
S&T Bank17$1.35K0.00%+17New
Core Alternative Capital16$1.27K0.00%00.0%Unchanged
Avion Wealth14$1.00K0.00%00.0%Unchanged
Tobam13$1.00K0.00%+13New
Winnow Wealth LLC12$9380.00%+4+50.0%Added
Richardson Financial Services Inc.11$8720.00%00.0%Unchanged
Fortitude Family Office, LLC11$8720.00%+11New
Mowery & Schoenfeld Wealth Management, LLC10$7930.00%−22−68.8%Reduced
Wolff Wiese Magana LLC10$7930.00%+5+100.0%Added
Carolinas Wealth Consulting LLC10$7920.00%−5−33.3%Reduced
Key Financial Inc10$7920.00%00.0%Unchanged
Chesapeake Asset Management LLC10$7920.00%+5+100.0%Added
Global Trust Asset Management, LLC10$7730.00%00.0%Unchanged
UMA Financial Services, Inc.9$7140.00%00.0%Unchanged
TD Waterhouse Canada Inc.9$7100.00%+9New
PayPay Securities Corp8$7040.04%−5−38.5%Reduced
Bay Harbor Wealth Management, LLC8$6330.00%+8New
Strengthening Families & Communities, LLC7$5550.00%00.0%Unchanged
American Capital Advisory, LLC6$4760.00%+6New
CBIZ Investment Advisory Services, LLC6$4750.00%−104−94.5%Reduced
Brown, Lisle/Cummings, Inc.6$4750.00%+6New
Creative Financial Designs Inc5$3960.00%−15−75.0%Reduced
Parkworth Wealth Management, Inc.5$3960.00%+1+25.0%Added
Fairway Wealth LLC5$3960.00%+5New
Bear Mountain Capital, Inc.4$3310.00%+4New
Continuum Advisory, LLC4$3170.00%00.0%Unchanged
Toth Financial Advisory Corp4$3170.00%+4New
TD Capital Management LLC4$3170.00%+4New
Stonebridge Financial Group, LLC4$3170.00%+4New
Gen-Wealth Partners Inc4$3170.00%+4New
Vision Financial Markets LLC3$2380.00%+3New
GoalVest Advisory LLC3$2380.00%+3New
Legacy Wealth Managment, LLC3$2380.00%+3New
Caitong International Asset Management Co., Ltd2$1580.00%−455−99.6%Reduced
Bartlett & Co. Wealth Management LLC2$1580.00%+2New
Hollencrest Capital Management1$790.00%+1New
Millstone Evans Group, LLC1$790.00%+1New
Proequities, Inc.0$00.00%−4,654−100.0%Sold out
Viking Global Investors LPSuperinvestorViking Global Investors0$00.00%−1,162,703−100.0%Sold out
Vantage Investment Partners, LLC0$00.00%−614,014−100.0%Sold out
Wolf Hill Capital Management, LP0$00.00%−538,469−100.0%Sold out
Point72 Asset Management, L.P.0$00.00%−417,487−100.0%Sold out
Marshall Wace, LLP0$00.00%−277,930−100.0%Sold out
Select Equity Group, L.P.0$00.00%−207,951−100.0%Sold out
Sandhill Capital Partners LLC0$00.00%−190,371−100.0%Sold out
Spence Asset Management0$00.00%−170,564−100.0%Sold out
Archon Partners LLC0$00.00%−152,000−100.0%Sold out
RedJay Asset Management Inc.0$00.00%−125,000−100.0%Sold out
Artemis Investment Management LLP0$00.00%−107,623−100.0%Sold out
Katamaran Capital LLP0$00.00%−61,235−100.0%Sold out
Insight Wealth Strategies, LLC0$00.00%−51,815−100.0%Sold out
Intrinsic Edge Capital Management LLC0$00.00%−50,000−100.0%Sold out
Connor, Clark & Lunn Investment Management Ltd.0$00.00%−40,007−100.0%Sold out
Y-Intercept (Hong Kong) Ltd0$00.00%−38,765−100.0%Sold out
Crestline Management, LP0$00.00%−38,086−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−33,549−100.0%Sold out
BNP Paribas0$00.00%−32,223−100.0%Sold out
Park Avenue Securities LLC0$00.00%−29,073−100.0%Sold out
Kodai Capital Management LP0$00.00%−27,307−100.0%Sold out
Prelude Capital Management, LLC0$00.00%−26,720−100.0%Sold out
Caisse de Depot Et Placement du Quebec0$00.00%−22,744−100.0%Sold out
Hudson Bay Capital Management LP0$00.00%−20,878−100.0%Sold out
Nebula Research & Development LLC0$00.00%−20,171−100.0%Sold out
Dynamic Technology Lab Private Ltd0$00.00%−19,179−100.0%Sold out
KP Management LLC0$00.00%−16,500−100.0%Sold out
First Hawaiian Bank0$00.00%−13,861−100.0%Sold out
Next Century Growth Investors LLC0$00.00%−13,506−100.0%Sold out
TFJ Management, LLC0$00.00%−13,488−100.0%Sold out
Inceptionr LLC0$00.00%−12,606−100.0%Sold out
Entropy Technologies, LP0$00.00%−12,421−100.0%Sold out
Parnassus Investments0$00.00%−12,009−100.0%Sold out
LRT Capital Management, LLC0$00.00%−11,484−100.0%Sold out
Sone Capital Management, LLC0$00.00%−11,022−100.0%Sold out
Centiva Capital, LP0$00.00%−10,762−100.0%Sold out
Bayesian Capital Management, LP0$00.00%−10,600−100.0%Sold out
Gsa Capital Partners LLP0$00.00%−9,999−100.0%Sold out
XTX Topco Ltd0$00.00%−9,272−100.0%Sold out
FORA Capital, LLC0$00.00%−9,159−100.0%Sold out
Kirtland Hills Capital Management, LLC0$00.00%−6,307−100.0%Sold out