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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
State Street Corp17,031,876$1.22B0.05%−27,868−0.2%Reduced
Principal Financial Group Inc19,186,275$1.37B0.75%−201,244−1.0%Reduced
Bamco Inc19,203,564$1.37B3.55%+418,128+2.2%Added
BlackRock, Inc.38,115,694$2.73B0.06%−770,199−2.0%Reduced
Vanguard Group Inc65,717,391$4.70B0.08%−36,929−0.1%Reduced
Artisan Partners Limited Partnership0$00.00%−5,635,481−100.0%Sold out
William Blair Investment Management, LLC0$00.00%−1,095,929−100.0%Sold out
Twinbeech Capital LP0$00.00%−605,624−100.0%Sold out
Jupiter Asset Management Ltd0$00.00%−199,355−100.0%Sold out
Renaissance Technologies LLC0$00.00%−175,180−100.0%Sold out
Hampton Road Capital Management LP0$00.00%−168,178−100.0%Sold out
Mediolanum International Funds Ltd0$00.00%−161,913−100.0%Sold out
Alyeska Investment Group, L.P.0$00.00%−160,227−100.0%Sold out
Walleye Capital LLC0$00.00%−155,813−100.0%Sold out
Pragma Gestao de Patrimonio Ltd0$00.00%−130,000−100.0%Sold out
Engineers Gate Manager LP0$00.00%−126,903−100.0%Sold out
Soros Capital Management LLC0$00.00%−93,250−100.0%Sold out
Centersquare Investment Management LLC0$00.00%−84,250−100.0%Sold out
Twin Tree Management, LP0$00.00%−64,576−100.0%Sold out
Generate Investment Management Ltd0$00.00%−62,143−100.0%Sold out
Kingdon Capital Management, L.L.C.0$00.00%−60,000−100.0%Sold out
Capital Fund Management S.A.0$00.00%−58,638−100.0%Sold out
Janney Montgomery Scott LLC0$00.00%−49,778−100.0%Sold out
Shaker Investments LLC0$00.00%−47,114−100.0%Sold out
Winton Group Ltd0$00.00%−46,236−100.0%Sold out
Keystone Investors Pte Ltd0$00.00%−37,324−100.0%Sold out
Aquatic Capital Management LLC0$00.00%−33,300−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−30,916−100.0%Sold out
Flossbach Von Storch AG0$00.00%−30,731−100.0%Sold out
Employees Retirement System of Texas0$00.00%−30,072−100.0%Sold out
Alberta Investment Management Corp0$00.00%−29,500−100.0%Sold out
Atlantic Union Bankshares Corp0$00.00%−29,266−100.0%Sold out
Trexquant Investment LP0$00.00%−18,164−100.0%Sold out
Scientech Research LLC0$00.00%−15,425−100.0%Sold out
Qsemble Capital Management, LP0$00.00%−13,390−100.0%Sold out
Roundview Capital LLC0$00.00%−13,255−100.0%Sold out
Veriti Management LLC0$00.00%−13,107−100.0%Sold out
Kentucky Retirement Systems Insurance Trust Fund0$00.00%−12,134−100.0%Sold out
Redwood Investments, LLC0$00.00%−11,579−100.0%Sold out
Quest Investment Management LLC0$00.00%−11,349−100.0%Sold out
ExodusPoint Capital Management, LP0$00.00%−11,169−100.0%Sold out
Paloma Partners Management Co0$00.00%−11,042−100.0%Sold out
Jump Financial, LLC0$00.00%−10,001−100.0%Sold out
Groupama Asset Managment0$00.00%−11,028−100.0%Sold out
nVerses Capital, LLC0$00.00%−8,400−100.0%Sold out
Kingswood Wealth Advisors, LLC0$00.00%−7,730−100.0%Sold out
Sherbrooke Park Advisers LLC0$00.00%−7,567−100.0%Sold out
Oxford Asset Management LLP0$00.00%−6,584−100.0%Sold out
Oak Thistle LLC0$00.00%−6,559−100.0%Sold out
Quantbot Technologies LP0$00.00%−6,481−100.0%Sold out
Marex Group plc0$00.00%−6,000−100.0%Sold out
International Assets Investment Management, LLC0$00.00%−32,892−100.0%Sold out
Axq Capital, LP0$00.00%−5,746−100.0%Sold out
17 Capital Partners, LLC0$00.00%−5,518−100.0%Sold out
AXS Investments LLC0$00.00%−5,379−100.0%Sold out
Plum Street Advisors, LLC0$00.00%−4,500−100.0%Sold out
TD Waterhouse Canada Inc.0$00.00%−4,156−100.0%Sold out
Credit Capital Investments LLC0$00.00%−4,000−100.0%Sold out
MBB Public Markets I LLC0$00.00%−3,960−100.0%Sold out
Beacon Pointe Advisors, LLC0$00.00%−3,749−100.0%Sold out
Fiduciary Group LLC0$00.00%−3,696−100.0%Sold out
Worldquant Millennium Advisors LLC0$00.00%−3,688−100.0%Sold out
Dark Forest Capital Management LP0$00.00%−3,406−100.0%Sold out
Panagora Asset Management Inc0$00.00%−3,310−100.0%Sold out
Meeder Advisory Services, Inc.0$00.00%−3,274−100.0%Sold out
Morningstar Investment Services LLC0$00.00%−3,123−100.0%Sold out
Courier Capital LLC0$00.00%−3,032−100.0%Sold out
Accredited Investors Inc.0$00.00%−2,960−100.0%Sold out
CAPROCK Group, Inc.0$00.00%−2,892−100.0%Sold out
Motco0$00.00%−2,808−100.0%Sold out
Teza Capital Management LLC0$00.00%−2,795−100.0%Sold out
FineMark National Bank & Trust0$00.00%−2,750−100.0%Sold out
KCM Investment Advisors LLC0$00.00%−2,720−100.0%Sold out
Alta Advisers Ltd0$00.00%−1,300−100.0%Sold out
Tobam0$00.00%−1,287−100.0%Sold out
Point72 Hong Kong Ltd0$00.00%−1,219−100.0%Sold out
Golden State Equity Partners0$00.00%−902−100.0%Sold out
Quarry LP0$00.00%−761−100.0%Sold out
Ashton Thomas Securities, LLC0$00.00%−527−100.0%Sold out
Western Pacific Wealth Management, LP0$00.00%−500−100.0%Sold out
Cromwell Holdings LLC0$00.00%−341−100.0%Sold out
Operose Advisors LLC0$00.00%−334−100.0%Sold out
Crewe Advisors LLC0$00.00%−294−100.0%Sold out
American National Bank0$00.00%−283−100.0%Sold out
Dynamic Wealth Strategies, LLC0$00.00%−210−100.0%Sold out
Avalon Trust Co0$00.00%−153−100.0%Sold out
Capital Advisors, Ltd. LLC0$00.00%−143−100.0%Sold out
Fortitude Family Office, LLC0$00.00%−53−100.0%Sold out
Itau Unibanco Holding S.A.0$00.00%−48−100.0%Sold out
Fairman Group, LLC0$00.00%−47−100.0%Sold out
Baldwin Brothers Inc0$00.00%−44−100.0%Sold out
Arlington Trust Co LLC0$00.00%−40−100.0%Sold out
Liberty One Investment Management, LLC0$00.00%−28−100.0%Sold out
Mendota Financial Group, LLC0$00.00%−22−100.0%Sold out
Pacific Capital Wealth Advisors, Inc0$00.00%−9−100.0%Sold out
Claris Advisors, LLC0$00.00%−8−100.0%Sold out
JDM Financial Group LLC0$00.00%−8−100.0%Sold out
Capital Performance Advisors LLP0$00.00%−7−100.0%Sold out
Voisard Asset Management Group, Inc.0$00.00%−6−100.0%Sold out
WestEnd Advisors, LLC0$00.00%−3−100.0%Sold out