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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 2025

Institutional positions in Costar Group, Inc. as of Dec 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
847
−40 vs. Q3 2025
Shares held
422.7M
+11.7M (+2.8%) vs. Q3 2025
Total value
$28.4B
−$6.23B (−18.0%) vs. Q3 2025
New holders
103
273 more added
Sold out
143
388 more reduced

18 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2025: 847 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 2025: $28.4B
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 2025

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2025.

Institutions holding CSGP in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Highland Capital Management Fund Advisors, L.P.0$00.00%−4,715−100.0%Sold out
Apollon Wealth Management, LLC0$00.00%−4,608−100.0%Sold out
Pallas Capital Advisors LLC0$00.00%−4,484−100.0%Sold out
FineMark National Bank & Trust0$00.00%−4,350−100.0%Sold out
Wallace Advisory Group, LLC0$00.00%−4,537−100.0%Sold out
Dynasty Wealth Management, LLC0$00.00%−4,094−100.0%Sold out
Buckingham Strategic Partners0$00.00%−4,957−100.0%Sold out
Main Street Financial Solutions, LLC0$00.00%−3,974−100.0%Sold out
Bayforest Capital Ltd0$00.00%−3,835−100.0%Sold out
Independent Advisor Alliance0$00.00%−3,716−100.0%Sold out
Skopos Labs, Inc.0$00.00%−3,848−100.0%Sold out
PUREfi Wealth, LLC0$00.00%−3,647−100.0%Sold out
Octavia Wealth Advisors, LLC0$00.00%−3,626−100.0%Sold out
Sagespring Wealth Partners, LLC0$00.00%−3,623−100.0%Sold out
HBK Sorce Advisory LLC0$00.00%−3,887−100.0%Sold out
Landscape Capital Management, L.L.C.0$00.00%−3,426−100.0%Sold out
HT Partners LLC0$00.00%−3,343−100.0%Sold out
Fifth Third Wealth Advisors LLC0$00.00%−3,304−100.0%Sold out
Advisory Services Network, LLC0$00.00%−3,296−100.0%Sold out
TownSquare Capital, LLC0$00.00%−3,246−100.0%Sold out
Keel Point, LLC0$00.00%−3,208−100.0%Sold out
Premier Path Wealth Partners, LLC0$00.00%−3,056−100.0%Sold out
Proficio Capital Partners LLC0$00.00%−2,968−100.0%Sold out
IHT Wealth Management, LLC0$00.00%−2,965−100.0%Sold out
Meeder Advisory Services, Inc.0$00.00%−2,964−100.0%Sold out
Greenleaf Trust0$00.00%−2,957−100.0%Sold out
Contravisory Investment Management, Inc.0$00.00%−2,931−100.0%Sold out
Crestwood Advisors Group LLC0$00.00%−2,931−100.0%Sold out
Kingswood Wealth Advisors, LLC0$00.00%−2,918−100.0%Sold out
Commerzbank Aktiengesellschaft0$00.00%−2,912−100.0%Sold out
Wedmont Private Capital0$00.00%−3,044−100.0%Sold out
Texas Capital Bank Wealth Management Services Inc0$00.00%−2,856−100.0%Sold out
Manuka Financial, LLC0$00.00%−2,824−100.0%Sold out
Castleview Partners, LLC0$00.00%−2,821−100.0%Sold out
KCM Investment Advisors LLC0$00.00%−2,720−100.0%Sold out
Evergreen Capital Management LLC0$00.00%−2,710−100.0%Sold out
Panagora Asset Management Inc0$00.00%−2,650−100.0%Sold out
Mather Group, LLC.0$00.00%−2,648−100.0%Sold out
Valeo Financial Advisors, LLC0$00.00%−2,607−100.0%Sold out
OneAscent Financial Services LLC0$00.00%−2,581−100.0%Sold out
Independent Financial Group, LLC0$00.00%−2,567−100.0%Sold out
Paul Damon & Associates, Inc.0$00.00%−2,505−100.0%Sold out
Flossbach Von Storch AG0$00.00%−2,500−100.0%Sold out
Archetype Wealth Partners0$00.00%−2,467−100.0%Sold out
Perfromance Wealth Partners, LLC0$00.00%−2,405−100.0%Sold out
Adell Harriman & Carpenter Inc0$00.00%−2,405−100.0%Sold out
Fukoku Mutual Life Insurance Co0$00.00%−2,398−100.0%Sold out
ArrowMark Colorado Holdings LLC0$00.00%−2,375−100.0%Sold out
Rainey & Randall Investment Management Inc.0$00.00%−2,372−100.0%Sold out
Osterweis Capital Management Inc0$00.00%−1,768−100.0%Sold out
Pension & Wealth Management Advisors, Inc.0$00.00%−1,031−100.0%Sold out
Newbridge Financial Services Group, Inc.0$00.00%−897−100.0%Sold out
Rise Advisors, LLC0$00.00%−629−100.0%Sold out
JPL Wealth Management, LLC0$00.00%−569−100.0%Sold out
Wealthspire Advisors, LLC0$00.00%−566−100.0%Sold out
Pinnacle Bancorp, Inc.0$00.00%−428−100.0%Sold out
Central Pacific Bank - Trust Division0$00.00%−420−100.0%Sold out
Hopwood Financial Services, Inc.0$00.00%−350−100.0%Sold out
Manning & Napier Advisors LLC0$00.00%−330−100.0%Sold out
Berbice Capital Management LLC0$00.00%−300−100.0%Sold out
Atlantic Trust, LLC0$00.00%−245−100.0%Sold out
Truvestments Capital LLC0$00.00%−205−100.0%Sold out
Ameritas Advisory Services, LLC0$00.00%−180−100.0%Sold out
Geneos Wealth Management Inc.0$00.00%−140−100.0%Sold out
Central Trust Co0$00.00%−108−100.0%Sold out
Edmond de Rothschild Holding S.A.0$00.00%−102−100.0%Sold out
Webster Bank, N. A.0$00.00%−88−100.0%Sold out
MJT & Associates Financial Advisory Group, Inc.0$00.00%−81−100.0%Sold out
TruNorth Capital Management, LLC0$00.00%−79−100.0%Sold out
Marshall & Sterling Wealth Advisors Inc.0$00.00%−75−100.0%Sold out
Cloud Capital Management, LLC0$00.00%−70−100.0%Sold out
S&T Bank0$00.00%−46−100.0%Sold out
Halbert Hargrove Global Advisors, LLC0$00.00%−40−100.0%Sold out
Tortoise Investment Management, LLC0$00.00%−32−100.0%Sold out
Grey Fox Wealth Advisors, LLC0$00.00%−30−100.0%Sold out
Proffitt & Goodson Inc0$00.00%−26−100.0%Sold out
Salem Investment Counselors Inc0$00.00%−20−100.0%Sold out
Avalon Trust Co0$00.00%−18−100.0%Sold out
Core Alternative Capital0$00.00%−16−100.0%Sold out
Capital Advisors, Ltd. LLC0$00.00%−11−100.0%Sold out
Wolff Wiese Magana LLC0$00.00%−10−100.0%Sold out
Bare Financial Services, Inc0$00.00%−10−100.0%Sold out
Hurley Capital, LLC0$00.00%−5−100.0%Sold out
Toth Financial Advisory Corp0$00.00%−4−100.0%Sold out
TD Capital Management LLC0$00.00%−4−100.0%Sold out
Gen-Wealth Partners Inc0$00.00%−4−100.0%Sold out
Palisade Asset Management, LLC0$00.00%−3−100.0%Sold out
Beaird Harris Wealth Management, LLC0$00.00%−3−100.0%Sold out
Y.D. More Investments Ltd0$00.00%−113−100.0%Sold out
Ogorek Anthony Joseph0$00.00%−2−100.0%Sold out
Bares Capital Management, Inc.––––Not filed
Ion Asset Management Ltd.––––Not filed
AXA Investment Managers S.A.––––Not filed
CIBC Bancorp USA Inc.––––Not filed
Glenmede Investment Management, LP––––Not filed
Thematics Asset Management––––Not filed
Ownership Capital B.V.––––Not filed
American Assets Capital Advisers, LLC––––Not filed
Wolverine Trading, LLC––––Not filed
Kathleen S. Wright Associates Inc.––––Not filed