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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 2021

Institutional positions in Costar Group, Inc. as of Mar 31, 2021. 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
593
No complete 13F data for Q4 2020
Shares held
38.0M
No complete 13F data for Q4 2020
Total value
$31.2B
No complete 13F data for Q4 2020

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 2021: 593 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 2021: $31.2B
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 2021

Shares, value and share of portfolio for each institution holding Costar Group, Inc..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding CSGP in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Truist Financial Corp43,177$35.5M0.06%––
Deutsche Bank AG45,788$37.6M0.02%––
Ci Investments Inc.46,490$38.2M0.16%––
Chicago Capital, LLC47,463$39.0M1.65%––
Morgan Stanley48,162$39.6M0.01%––
Stephens Investment Management Group LLC49,009$40.3M0.58%––
Capital World Investors50,000$41.1M0.01%––
Citigroup Inc51,150$42.0M0.04%––
SEI Investments Co50,750$43.1M0.11%––
Voloridge Investment Management, LLC54,821$45.1M0.33%––
State Board of Administration of Florida Retirement System55,003$45.2M0.09%––
National Pension Service55,743$45.8M0.10%––
Peregrine Capital Management LLC56,292$46.3M0.86%––
Geneva Capital Management LLC59,197$48.7M0.83%––
New York State Common Retirement Fund59,491$48.9M0.05%––
STRS Ohio62,044$51.0M0.19%––
Wildcat Capital Management, LLC69,987$57.5M7.03%––
American Capital Management Inc70,791$58.2M1.76%––
Parametric Portfolio Associates LLC72,559$59.6M0.03%––
California State Teachers Retirement System73,654$60.5M0.08%––
American Century Companies Inc77,164$63.4M0.05%––
Baird Financial Group, Inc.78,861$64.8M0.18%––
Westfield Capital Management Co LP79,077$65.0M0.40%––
California Public Employees Retirement System81,474$67.0M0.05%––
Dimensional Fund Advisors LP82,056$67.4M0.02%––
Rathbone Brothers plc82,900$68.1M0.87%––
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management83,450$68.6M3.03%––
Mitsubishi UFJ Trust & Banking Corp87,825$72.2M0.16%––
William Blair Investment Management, LLC90,807$74.6M0.24%––
Envestnet Asset Management Inc91,525$75.2M0.05%––
TimesSquare Capital Management, LLC101,115$83.1M0.71%––
Teacher Retirement System of Texas105,714$86.9M0.48%––
TD Asset Management Inc113,485$93.3M0.10%––
Goldman Sachs Group Inc114,349$94.0M0.03%––
Kayne Anderson Rudnick Investment Management LLC119,280$98.0M0.26%––
Senator Investment Group LP120,000$98.6M2.03%––
Charles Schwab Investment Management Inc120,072$98.7M0.04%––
Echo Street Capital Management LLC125,848$103.4M0.92%––
Korea Investment CORP126,029$103.6M0.33%––
JPMorgan Chase & Co128,034$105.2M0.02%––
APG Asset Management N.V.159,451$111.5M0.19%––
Granahan Investment Management Inc138,668$114.0M2.42%––
UBS Asset Management Americas Inc139,214$114.4M0.05%––
CIBC Private Wealth Group, LLC148,253$121.8M0.31%––
Swiss National Bank151,600$124.6M0.08%––
Victory Capital Management Inc152,402$125.3M0.13%––
Segall Bryant & Hamill, LLC163,546$134.4M1.33%––
Sumitomo Mitsui Trust Holdings, Inc.170,104$139.8M0.09%––
Nuveen Asset Management, LLC181,097$148.8M0.05%––
Ensign Peak Advisors, Inc184,231$151.4M0.33%––
Bank of New York Mellon Corp192,945$158.6M0.03%––
Millennium Management LLC194,404$159.8M0.22%––
Pelham Capital Ltd.208,536$171.4M10.64%––
Voya Investment Management LLC211,149$173.5M0.35%––
Amundi Asset Management US, Inc.220,805$181.5M0.14%––
Ameriprise Financial Inc221,246$181.8M0.06%––
Putnam Investments LLC223,721$183.9M0.31%––
DF Dent & Co Inc227,771$187.2M2.17%––
Legal & General Group Plc241,057$198.1M0.07%––
Riverbridge Partners LLC241,706$198.7M2.26%––
Winslow Capital Management, LLC247,027$203.0M0.86%––
Invesco Ltd.257,302$211.5M0.06%––
Blair William & Co262,646$215.9M0.81%––
Federated Hermes, Inc.274,409$225.5M0.44%––
Northern Trust Corp290,853$239.1M0.04%––
Wells Fargo & Company294,120$241.7M0.06%––
Bank of America Corp297,269$244.3M0.03%––
Fred Alger Management, LLC300,083$246.6M0.65%––
Bares Capital Management, Inc.334,758$275.1M5.14%––
Ownership Capital B.V.343,995$282.7M3.68%––
Findlay Park Partners LLP357,365$293.7M2.04%––
Waddell & Reed Financial Inc370,963$304.9M0.63%––
Norges Bank371,605$305.4M0.07%––
Alkeon Capital Management LLC385,098$316.5M1.20%––
FMR LLC400,778$329.4M0.03%––
Geode Capital Management, LLC475,220$390.0M0.06%––
Veritas Asset Management LLP482,781$396.8M2.17%––
Wellington Management Group LLP489,057$402.0M0.07%––
Third Point LLCSuperinvestorThird Point550,000$452.0M3.05%––
Vulcan Value Partners, LLC663,575$545.4M3.22%––
State Street Corp770,380$633.2M0.04%––
Massachusetts Financial Services Co868,210$713.6M0.22%––
Sands Capital Management, LLC910,335$748.2M1.45%––
Principal Financial Group Inc954,248$784.3M0.55%––
Akre Capital Management LLCSuperinvestorAkre Capital Management976,760$802.8M5.47%––
Franklin Resources Inc1,048,877$862.0M0.35%––
Baillie Gifford & Co1,147,435$943.1M0.53%––
Janus Henderson Group PLC1,503,270$1.24B0.56%––
Bamco Inc1,940,259$1.59B3.93%––
BlackRock Inc.3,052,392$2.51B0.07%––
Vanguard Group Inc3,476,587$2.86B0.08%––
Price T Rowe Associates Inc4,237,437$3.48B0.35%––
Harel Insurance Investments & Financial Services Ltd.338––––
Advisors Asset Management, Inc.0$00.00%––