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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 $12.3B in total; superinvestors Akre Capital Management and Weitz Investment Management hold it.

13F holders, Q3 2024

Institutional positions in Costar Group, Inc. as of Sep 30, 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
773
+13 vs. Q2 2024
Shares held
400.0M
+42.0M (+11.7%) vs. Q2 2024
Total value
$30.2B
+$3.66B (+13.8%) vs. Q2 2024
New holders
91
308 more added
Sold out
78
284 more reduced

7 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2024: 773 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 heldQ3 2024: $30.2B
Q1 2021: $31.2BQ2 2021: $31.1BQ3 2021: $32.3BQ4 2021: $30.2BQ1 2022: $25.2BQ2 2022: $23.2BQ3 2022: $29.1BQ4 2022: $30.5BQ1 2023: $27.0BQ2 2023: $35.6BQ3 2023: $30.1BQ4 2023: $34.7BQ1 2024: $40.1BQ2 2024: $29.4BQ3 2024: $30.2BQ4 2024: $29.3BQ1 2025: $34.0BQ2 2025: $34.3BQ3 2025: $35.1BQ4 2025: $28.6BQ1 2026: $16.8BQ2 2026: $12.3B
Institutions holding CSGP and their total value by quarter
QuarterHoldersValue
Q2 2026760$12.3B
Q1 2026797$16.8B
Q4 2025847$28.6B
Q3 2025905$35.1B
Q2 2025873$34.3B
Q1 2025858$34.0B
Q4 2024805$29.3B
Q3 2024773$30.2B
Q2 2024767$29.4B
Q1 2024767$40.1B
Q4 2023737$34.7B
Q3 2023690$30.1B
Q2 2023714$35.6B
Q1 2023692$27.0B
Q4 2022704$30.5B
Q3 2022634$29.1B
Q2 2022591$23.2B
Q1 2022589$25.2B
Q4 2021633$30.2B
Q3 2021594$32.3B
Q2 2021607$31.1B
Q1 2021593$31.2B

Institutions, Q3 2024

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2024.

Institutions holding CSGP in Q3 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Vanguard Group Inc65,754,320$4.96B0.09%+136,982+0.2%Added
BlackRock, Inc.38,885,893$2.93B0.06%+38,885,893New
Principal Financial Group Inc19,387,519$1.46B0.80%+16,544+0.1%Added
Bamco Inc18,785,436$1.42B3.76%−485,562−2.5%Reduced
State Street Corp17,059,744$1.29B0.05%+722,153+4.4%Added
Massachusetts Financial Services Co11,380,192$858.5M0.26%−4,3800.0%Reduced
Geode Capital Management, LLC11,308,986$850.7M0.07%+236,407+2.1%Added
Capital International Investors9,687,096$730.8M0.14%+5,691,466+142.4%Added
Akre Capital Management LLCSuperinvestorAkre Capital Management8,934,093$674.0M5.61%+163,670+1.9%Added
Baillie Gifford & Co8,799,131$663.8M0.50%−252,650−2.8%Reduced
Macquarie Group Ltd7,623,871$575.1M0.62%−825,994−9.8%Reduced
Janus Henderson Group PLC6,627,229$500.0M0.26%−5,487,301−45.3%Reduced
Bank of New York Mellon Corp5,987,794$451.7M0.08%−129,466−2.1%Reduced
Artisan Partners Limited Partnership5,635,481$425.1M0.64%−168,666−2.9%Reduced
T. Rowe Price Investment Management, Inc.5,148,632$388.4M0.23%+1,455,382+39.4%Added
Norges Bank5,136,997$387.5M0.05%+40,373+0.8%Added
JPMorgan Chase & Co4,716,662$355.8M0.01%+2,002,354+73.8%Added
Vulcan Value Partners, LLC4,429,889$334.2M5.59%+290,902+7.0%Added
Bank of America Corp4,208,707$317.5M0.03%−561,013−11.8%Reduced
Blair William & Co3,850,836$290.5M0.85%−546,902−12.4%Reduced
Brown Advisory Inc3,766,658$284.2M0.36%−133,516−3.4%Reduced
Invesco Ltd.3,748,950$282.8M0.05%+297,020+8.6%Added
Morgan Stanley3,671,066$276.9M0.02%+112,998+3.2%Added
Northern Trust Corp3,295,603$248.6M0.04%−231,546−6.6%Reduced
Capital Research Global Investors2,976,770$224.6M0.05%+323,354+12.2%Added
Mackenzie Financial Corp2,807,019$211.8M0.29%+448,493+19.0%Added
Charles Schwab Investment Management Inc2,684,373$202.5M0.04%+76,916+2.9%Added
Voya Investment Management LLC2,603,483$196.4M0.20%+1,232,384+89.9%Added
Goldman Sachs Group Inc2,591,489$195.5M0.04%+149,523+6.1%Added
Legal & General Group Plc2,351,247$177.4M0.05%+56,539+2.5%Added
Franklin Resources Inc2,222,133$171.9M0.05%−343,767−13.4%Reduced
Barclays PLC2,249,188$169.7M0.07%+1,073,793+91.4%Added
Amundi2,160,086$162.3M0.06%+1,387,179+179.5%Added
UBS Asset Management Americas Inc2,096,255$158.1M0.04%+9,999+0.5%Added
Ameriprise Financial Inc2,083,633$157.2M0.04%−588,391−22.0%Reduced
Harding Loevner LP1,998,238$150.7M0.87%+447,111+28.8%Added
Fayez Sarofim & Co1,948,375$147.0M0.37%+540,574+38.4%Added
Federated Hermes, Inc.1,943,747$146.6M0.32%−24,827−1.3%Reduced
BNP PARIBAS ASSET MANAGEMENT Holding S.A.1,873,684$141.3M0.35%−76,733−3.9%Reduced
Riverbridge Partners LLC1,842,016$139.0M1.86%−85,426−4.4%Reduced
Dimensional Fund Advisors LP1,784,786$134.6M0.03%+86,853+5.1%Added
DF Dent & Co Inc1,773,578$133.8M1.63%−109,055−5.8%Reduced
Envestnet Asset Management Inc1,670,593$126.0M0.04%−50,719−2.9%Reduced
RGM Capital, LLC1,598,078$120.6M5.22%00.0%Unchanged
FMR LLC1,597,428$120.5M0.01%−9,068−0.6%Reduced
Ownership Capital B.V.1,443,179$108.9M3.48%−308,585−17.6%Reduced
Westfield Capital Management Co LP1,365,508$103.0M0.47%−354,405−20.6%Reduced
Nuveen Asset Management, LLC1,284,674$96.9M0.03%−9,999−0.8%Reduced
Price T Rowe Associates Inc1,271,331$95.9M0.01%−173,220−12.0%Reduced
Deutsche Bank AG1,268,078$95.7M0.04%+104,243+9.0%Added
Viking Global Investors LPSuperinvestorViking Global Investors1,261,195$95.1M0.35%+1,261,195New
BNP Paribas Arbitrage, SA1,260,157$95.1M0.09%+317,017+33.6%Added
Swiss National Bank1,212,400$91.5M0.06%+3,200+0.3%Added
SEI Investments Co1,180,564$89.1M0.12%−53,028−4.3%Reduced
Wells Fargo & Company1,176,304$88.7M0.02%−25,355−2.1%Reduced
Beck Mack & Oliver LLC1,133,811$85.5M1.66%+130,375+13.0%Added
Baird Financial Group, Inc.1,132,686$85.4M0.17%−109,517−8.8%Reduced
William Blair Investment Management, LLC1,095,929$82.7M0.20%+42,655+4.0%Added
Ensign Peak Advisors, Inc1,066,365$80.4M0.14%+6,840+0.6%Added
UBS Group AG1,064,885$80.3M0.02%+282,688+36.1%Added
National Pension Service1,020,943$77.0M0.07%+6,826+0.7%Added
Sumitomo Mitsui Trust Holdings, Inc.974,084$73.5M0.05%+23,825+2.5%Added
Kayne Anderson Rudnick Investment Management LLC948,782$71.6M0.16%−27,861−2.9%Reduced
Pictet Asset Management Holding SA943,477$71.2M0.08%+1,380+0.1%Added
American Capital Management Inc927,391$70.0M2.29%+104,317+12.7%Added
Chicago Capital, LLC921,339$69.5M1.93%+9,155+1.0%Added
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management886,500$66.9M3.30%00.0%Unchanged
HSBC Holdings PLC860,489$64.9M0.04%−29,858−3.4%Reduced
Spyglass Capital Management LLC829,004$62.5M4.11%−12,300−1.5%Reduced
Royal Bank of Canada775,220$58.5M0.01%−71,848−8.5%Reduced
TimesSquare Capital Management, LLC734,366$55.4M0.83%+44,405+6.4%Added
Citigroup Inc729,730$55.1M0.05%+37,113+5.4%Added
Rhumbline Advisers721,151$54.4M0.05%−20,411−2.8%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.708,656$53.5M0.06%+37,013+5.5%Added
Ci Investments Inc.707,150$53.3M0.20%−7,852−1.1%Reduced
California Public Employees Retirement System681,981$51.4M0.04%−6,973−1.0%Reduced
California State Teachers Retirement System674,811$50.9M0.06%+3,547+0.5%Added
Victory Capital Management Inc656,936$49.6M0.05%−86,254−11.6%Reduced
Bares Capital Management, Inc.648,467$48.9M4.45%−734,368−53.1%Reduced
Point72 Asset Management, L.P.646,452$48.8M0.17%+646,452New
Peregrine Capital Management LLC626,751$47.3M1.43%−5,597−0.9%Reduced
Stephens Investment Management Group LLC618,664$46.7M0.64%+133,072+27.4%Added
Bank of Montreal621,900$46.6M0.02%−6,509−1.0%Reduced
Twinbeech Capital LP605,624$45.7M0.87%+134,950+28.7%Added
TD Asset Management Inc591,837$44.4M0.04%+123,709+26.4%Added
Mitsubishi UFJ Trust & Banking Corp586,744$44.3M0.10%−42,289−6.7%Reduced
Eagle Asset Management Inc561,398$43.4M0.22%−657,825−54.0%Reduced
CI Private Wealth, LLC542,701$40.9M0.06%+2,025+0.4%Added
Quantum Capital Management, LLC536,935$40.5M4.20%−30,700−5.4%Reduced
Raymond James & Associates530,791$40.0M0.02%−97,321−15.5%Reduced
Vantage Investment Partners, LLC505,016$38.1M3.20%+100,127+24.7%Added
Telemark Asset Management, LLC500,000$37.7M3.81%+150,000+42.9%Added
Natixis Advisors, L.P.495,570$37.4M0.07%+145,715+41.7%Added
Wolf Hill Capital Management, LP480,000$36.2M3.47%+480,000New
Ironvine Capital Partners, LLC472,052$35.6M3.82%+1,237+0.3%Added
Alliancebernstein L.P.468,883$35.4M0.01%−94,125−16.7%Reduced
Prudential Financial Inc462,620$34.9M0.05%+200,183+76.3%Added
ProShare Advisors LLC456,196$34.4M0.08%+31,131+7.3%Added
NZS Capital, LLC455,382$34.4M1.34%+9,587+2.2%Added
Jennison Associates LLC455,322$34.3M0.02%−53,829−10.6%Reduced