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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, Q2 2023

Institutional positions in Costar Group, Inc. as of Jun 30, 2023. 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
714
+22 vs. Q1 2023
Shares held
399.0M
+10.1M (+2.6%) vs. Q1 2023
Total value
$35.5B
+$8.71B (+32.6%) vs. Q1 2023
New holders
91
265 more added
Sold out
69
250 more reduced

Compare with Q1 2023: 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 holdersQ2 2023: 714 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 heldQ2 2023: $35.5B
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, Q2 2023

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q1 2023.

Institutions holding CSGP in Q2 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Akre Capital Management LLCSuperinvestorAkre Capital Management7,111,430$632.9M5.28%00.0%Unchanged
T. Rowe Price Investment Management, Inc.7,810,636$695.1M0.47%+7,649+0.1%Added
Sands Capital Management, LLC8,325,696$741.0M2.30%−1,274,880−13.3%Reduced
Macquarie Group Ltd8,871,310$789.5M0.90%+172,498+2.0%Added
Geode Capital Management, LLC10,899,062$968.0M0.11%+1,085,038+11.1%Added
Janus Henderson Group PLC11,071,542$985.4M0.61%−2,009,764−15.4%Reduced
Massachusetts Financial Services Co11,370,445$1.01B0.33%−172,104−1.5%Reduced
Baillie Gifford & Co11,934,044$1.06B0.90%−406,931−3.3%Reduced
State Street Corp15,311,558$1.36B0.07%+290,864+1.9%Added
Principal Financial Group Inc19,046,923$1.70B1.16%−229,787−1.2%Reduced
Bamco Inc19,105,103$1.70B4.71%+135,022+0.7%Added
BlackRock Inc.32,124,231$2.86B0.08%+206,764+0.6%Added
Vanguard Group Inc64,972,275$5.78B0.14%+19,777,676+43.8%Added
IFP Advisors, Inc89––−28−23.9%Reduced
Champlain Investment Partners, LLC0$00.00%−1,581,125−100.0%Sold out
Renaissance Technologies LLC0$00.00%−1,374,480−100.0%Sold out
Twinbeech Capital LP0$00.00%−416,855−100.0%Sold out
Cubist Systematic Strategies, LLC0$00.00%−364,160−100.0%Sold out
Prana Capital Management, LP0$00.00%−154,282−100.0%Sold out
Point72 Middle East FZE0$00.00%−110,350−100.0%Sold out
Arrowstreet Capital, Limited Partnership0$00.00%−95,968−100.0%Sold out
Bridgeway Capital Management, LLC0$00.00%−69,400−100.0%Sold out
Two Sigma Advisers, LP0$00.00%−57,700−100.0%Sold out
Seven Eight Capital, LP0$00.00%−50,243−100.0%Sold out
Magnetar Financial LLC0$00.00%−47,748−100.0%Sold out
Quantbot Technologies LP0$00.00%−37,482−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−33,065−100.0%Sold out
Campbell & CO Investment Adviser LLC0$00.00%−31,528−100.0%Sold out
GPM Growth Investors, Inc.0$00.00%−30,171−100.0%Sold out
Carlson Capital L P0$00.00%−25,900−100.0%Sold out
Versor Investments LP0$00.00%−25,600−100.0%Sold out
Wealth Enhancement Advisory Services, LLC0$00.00%−25,216−100.0%Sold out
Industrial Alliance Investment Management Inc.0$00.00%−24,465−100.0%Sold out
Twin Tree Management, LP0$00.00%−22,287−100.0%Sold out
Ergoteles LLC0$00.00%−21,883−100.0%Sold out
Dynamic Technology Lab Private Ltd0$00.00%−21,368−100.0%Sold out
DoubleLine ETF Adviser LP0$00.00%−20,487−100.0%Sold out
Chartwell Investment Partners, LLC0$00.00%−20,140−100.0%Sold out
Waratah Capital Advisors Ltd.0$00.00%−16,621−100.0%Sold out
Two Sigma Investments, LP0$00.00%−14,560−100.0%Sold out
Cornercap Investment Counsel Inc0$00.00%−14,339−100.0%Sold out
Greenline Partners, LLC0$00.00%−14,238−100.0%Sold out
HRT Financial LP0$00.00%−14,069−100.0%Sold out
Qsemble Capital Management, LP0$00.00%−13,000−100.0%Sold out
PEAK6 Investments LLC0$00.00%−12,771−100.0%Sold out
Connor, Clark & Lunn Investment Management Ltd.0$00.00%−11,049−100.0%Sold out
La Banque Postale Asset Management SA0$00.00%−8,501−100.0%Sold out
Steel Peak Wealth Management LLC0$00.00%−8,238−100.0%Sold out
Illinois Municipal Retirement Fund0$00.00%−7,994−100.0%Sold out
Pearl River Capital, LLC0$00.00%−7,807−100.0%Sold out
Gotham Asset Management, LLC0$00.00%−7,670−100.0%Sold out
Machina Capital S.A.S.0$00.00%−7,612−100.0%Sold out
Blueshift Asset Management, LLC0$00.00%−6,816−100.0%Sold out
Harbour Capital Advisors, LLC0$00.00%−6,578−100.0%Sold out
Pinkerton Retirement Specialists, LLC0$00.00%−5,920−100.0%Sold out
Boulder Hill Capital Management LP0$00.00%−5,300−100.0%Sold out
Arcadia Investment Management Corp0$00.00%−4,400−100.0%Sold out
Quantamental Technologies LLC0$00.00%−3,775−100.0%Sold out
Financial Consulate, Inc0$00.00%−3,764−100.0%Sold out
Cerity Partners LLC0$00.00%−3,650−100.0%Sold out
Employees Retirement System of Texas0$00.00%−3,234−100.0%Sold out
Coastal Investment Advisors, Inc.0$00.00%−3,177−100.0%Sold out
Sustainable Growth Advisers, LP0$00.00%−3,011−100.0%Sold out
Kapitalo Investimentos Ltda0$00.00%−2,030−100.0%Sold out
Advisory Services Network, LLC0$00.00%−1,280−100.0%Sold out
Belpointe Asset Management LLC0$00.00%−1,147−100.0%Sold out
Harel Insurance Investments & Financial Services Ltd.0$00.00%−392−100.0%Sold out
Quarry LP0$00.00%−358−100.0%Sold out
TCI Wealth Advisors, Inc.0$00.00%−280−100.0%Sold out
Ten Capital Wealth Advisors, LLC0$00.00%−206−100.0%Sold out
Logan Capital Management Inc0$00.00%−200−100.0%Sold out
Fortis Capital Advisors, LLC0$00.00%−188−100.0%Sold out
WealthPlan Investment Management, LLC0$00.00%−110−100.0%Sold out
Orion Capital Management LLC0$00.00%−100−100.0%Sold out
BDO Wealth Advisors, LLC0$00.00%−73−100.0%Sold out
Steward Financial Group LLC0$00.00%−78−100.0%Sold out
Raleigh Capital Management Inc.0$00.00%−68−100.0%Sold out
Schubert & Co0$00.00%−62−100.0%Sold out
Accel Wealth Management0$00.00%−39−100.0%Sold out
Cutler Group LP0$00.00%−38−100.0%Sold out
Capital Advisors, Ltd. LLC0$00.00%−17−100.0%Sold out
Central Bank & Trust Co0$00.00%−7−100.0%Sold out
McClarren Financial Advisors, Inc.0$00.00%−2−100.0%Sold out