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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, 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
397.6M
+41.1M (+11.5%) vs. Q2 2024
Total value
$30.0B
+$3.57B (+13.5%) vs. Q2 2024
New holders
91
309 more added
Sold out
78
283 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: $30.0B
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, 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
Rhumbline Advisers721,151$54.4M0.05%−20,411−2.8%Reduced
Citigroup Inc729,730$55.1M0.05%+37,113+5.4%Added
TimesSquare Capital Management, LLC734,366$55.4M0.83%+44,405+6.4%Added
Royal Bank of Canada775,220$58.5M0.01%−71,848−8.5%Reduced
Spyglass Capital Management LLC829,004$62.5M4.11%−12,300−1.5%Reduced
HSBC Holdings PLC860,489$64.9M0.04%−29,858−3.4%Reduced
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management886,500$66.9M3.30%00.0%Unchanged
Chicago Capital, LLC921,339$69.5M1.93%+9,155+1.0%Added
American Capital Management Inc927,391$70.0M2.29%+104,317+12.7%Added
Pictet Asset Management Holding SA943,477$71.2M0.08%+1,380+0.1%Added
Kayne Anderson Rudnick Investment Management LLC948,782$71.6M0.16%−27,861−2.9%Reduced
Sumitomo Mitsui Trust Holdings, Inc.974,084$73.5M0.05%+23,825+2.5%Added
National Pension Service1,020,943$77.0M0.07%+6,826+0.7%Added
UBS Group AG1,064,885$80.3M0.02%+282,688+36.1%Added
Ensign Peak Advisors, Inc1,066,365$80.4M0.14%+6,840+0.6%Added
William Blair Investment Management, LLC1,095,929$82.7M0.20%+42,655+4.0%Added
Baird Financial Group, Inc.1,132,686$85.4M0.17%−109,517−8.8%Reduced
Beck Mack & Oliver LLC1,133,811$85.5M1.66%+130,375+13.0%Added
Wells Fargo & Company1,176,304$88.7M0.02%−25,355−2.1%Reduced
SEI Investments Co1,180,564$89.1M0.12%−53,028−4.3%Reduced
Swiss National Bank1,212,400$91.5M0.06%+3,200+0.3%Added
BNP Paribas Arbitrage, SA1,260,157$95.1M0.09%+317,017+33.6%Added
Viking Global Investors LPSuperinvestorViking Global Investors1,261,195$95.1M0.35%+1,261,195New
Deutsche Bank AG1,268,078$95.7M0.04%+104,243+9.0%Added
Price T Rowe Associates Inc1,271,331$95.9M0.01%−173,220−12.0%Reduced
Nuveen Asset Management, LLC1,284,674$96.9M0.03%−9,999−0.8%Reduced
Westfield Capital Management Co LP1,365,508$103.0M0.47%−354,405−20.6%Reduced
Ownership Capital B.V.1,443,179$108.9M3.48%−308,585−17.6%Reduced
FMR LLC1,597,428$120.5M0.01%−9,068−0.6%Reduced
RGM Capital, LLC1,598,078$120.6M5.22%00.0%Unchanged
Envestnet Asset Management Inc1,670,593$126.0M0.04%−50,719−2.9%Reduced
DF Dent & Co Inc1,773,578$133.8M1.63%−109,055−5.8%Reduced
Dimensional Fund Advisors LP1,784,786$134.6M0.03%+86,853+5.1%Added
Riverbridge Partners LLC1,842,016$139.0M1.86%−85,426−4.4%Reduced
BNP PARIBAS ASSET MANAGEMENT Holding S.A.1,873,684$141.3M0.35%−76,733−3.9%Reduced
Federated Hermes, Inc.1,943,747$146.6M0.32%−24,827−1.3%Reduced
Fayez Sarofim & Co1,948,375$147.0M0.37%+540,574+38.4%Added
Harding Loevner LP1,998,238$150.7M0.87%+447,111+28.8%Added
Ameriprise Financial Inc2,083,633$157.2M0.04%−588,391−22.0%Reduced
UBS Asset Management Americas Inc2,096,255$158.1M0.04%+9,999+0.5%Added
Amundi2,160,086$162.3M0.06%+1,387,179+179.5%Added
Barclays PLC2,249,188$169.7M0.07%+1,073,793+91.4%Added
Franklin Resources Inc2,222,133$171.9M0.05%−343,767−13.4%Reduced
Legal & General Group Plc2,351,247$177.4M0.05%+56,539+2.5%Added
JPMorgan Chase & Co2,358,331$177.9M0.01%+1,001,177+73.8%Added
Goldman Sachs Group Inc2,591,489$195.5M0.04%+149,523+6.1%Added
Voya Investment Management LLC2,603,483$196.4M0.20%+1,232,384+89.9%Added
Charles Schwab Investment Management Inc2,684,373$202.5M0.04%+76,916+2.9%Added
Mackenzie Financial Corp2,807,019$211.8M0.29%+448,493+19.0%Added
Capital Research Global Investors2,976,770$224.6M0.05%+323,354+12.2%Added
Northern Trust Corp3,295,603$248.6M0.04%−231,546−6.6%Reduced
Morgan Stanley3,671,066$276.9M0.02%+112,998+3.2%Added
Invesco Ltd.3,748,950$282.8M0.05%+297,020+8.6%Added
Brown Advisory Inc3,766,658$284.2M0.36%−133,516−3.4%Reduced
Blair William & Co3,850,836$290.5M0.85%−546,902−12.4%Reduced
Bank of America Corp4,208,707$317.5M0.03%−561,013−11.8%Reduced
Vulcan Value Partners, LLC4,429,889$334.2M5.59%+290,902+7.0%Added
Norges Bank5,136,997$387.5M0.05%+40,373+0.8%Added
T. Rowe Price Investment Management, Inc.5,148,632$388.4M0.23%+1,455,382+39.4%Added
Artisan Partners Limited Partnership5,635,481$425.1M0.64%−168,666−2.9%Reduced
Bank of New York Mellon Corp5,987,794$451.7M0.08%−129,466−2.1%Reduced
Janus Henderson Group PLC6,627,229$500.0M0.26%−5,487,301−45.3%Reduced
Macquarie Group Ltd7,623,871$575.1M0.62%−825,994−9.8%Reduced
Baillie Gifford & Co8,799,131$663.8M0.50%−252,650−2.8%Reduced
Akre Capital Management LLCSuperinvestorAkre Capital Management8,934,093$674.0M5.61%+163,670+1.9%Added
Capital International Investors9,687,096$730.8M0.14%+5,691,466+142.4%Added
Geode Capital Management, LLC11,308,986$850.7M0.07%+236,407+2.1%Added
Massachusetts Financial Services Co11,380,192$858.5M0.26%−4,3800.0%Reduced
State Street Corp17,059,744$1.29B0.05%+722,153+4.4%Added
Bamco Inc18,785,436$1.42B3.76%−485,562−2.5%Reduced
Principal Financial Group Inc19,387,519$1.46B0.80%+16,544+0.1%Added
BlackRock, Inc.38,885,893$2.93B0.06%+38,885,893New
Vanguard Group Inc65,754,320$4.96B0.09%+136,982+0.2%Added
Select Equity Group, L.P.0$00.00%−819,550−100.0%Sold out
Colony Group, LLC0$00.00%−518,680−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−286,836−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−232,495−100.0%Sold out
Long Pond Capital, LP0$00.00%−222,500−100.0%Sold out
ING Groep NV0$00.00%−190,990−100.0%Sold out
Cubist Systematic Strategies, LLC0$00.00%−185,141−100.0%Sold out
Two Sigma Investments, LP0$00.00%−147,295−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−142,604−100.0%Sold out
HRT Financial LP0$00.00%−138,149−100.0%Sold out
Ninety One North America, Inc.0$00.00%−98,541−100.0%Sold out
Lord, Abbett & Co. LLC0$00.00%−73,885−100.0%Sold out
Boston Private Wealth LLC0$00.00%−68,614−100.0%Sold out
Intrinsic Edge Capital Management LLC0$00.00%−62,742−100.0%Sold out
Magnetar Financial LLC0$00.00%−61,404−100.0%Sold out
Jag Capital Management, LLC0$00.00%−56,763−100.0%Sold out
Seven Eight Capital, LP0$00.00%−56,499−100.0%Sold out
Banco Santander, S.A.0$00.00%−55,670−100.0%Sold out
APG Asset Management N.V.0$00.00%−46,129−100.0%Sold out
Aigen Investment Management, LP0$00.00%−42,430−100.0%Sold out
SYSTM Wealth Solutions LLC0$00.00%−39,979−100.0%Sold out
CX Institutional0$00.00%−33,397−100.0%Sold out
united american securities inc. (d/b/a uas asset management)0$00.00%−30,035−100.0%Sold out
XTX Topco Ltd0$00.00%−29,845−100.0%Sold out
Versor Investments LP0$00.00%−27,138−100.0%Sold out
Bayesian Capital Management, LP0$00.00%−26,585−100.0%Sold out
Highland Capital Management, LLC0$00.00%−23,813−100.0%Sold out