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Costar Group, Inc.

CSGP
Exchange
Nasdaq
Industry
Services-Business Services, NEC
SEC CIK
0001057352

No open-market purchases or sales by Costar Group, Inc. insiders were filed in the last 90 days; 764 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 2024

Institutional positions in Costar Group, Inc. as of Jun 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
768
+8 vs. Q1 2024
Shares held
395.2M
−1.98M (−0.5%) vs. Q1 2024
Total value
$29.3B
−$9.03B (−23.6%) vs. Q1 2024
New holders
100
278 more added
Sold out
92
283 more reduced

7 institutions that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2024: 768 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: 768 institutionsQ3 2024: 775 institutionsQ4 2024: 808 institutionsQ1 2025: 861 institutionsQ2 2025: 876 institutionsQ3 2025: 909 institutionsQ4 2025: 851 institutionsQ1 2026: 801 institutionsQ2 2026: 764 institutions
Value heldQ2 2024: $29.3B
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 2026764$11.7B
Q1 2026801$16.8B
Q4 2025851$28.4B
Q3 2025909$34.9B
Q2 2025876$34.2B
Q1 2025861$33.9B
Q4 2024808$28.9B
Q3 2024775$30.0B
Q2 2024768$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 2024

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q1 2024.

Institutions holding CSGP in Q2 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Vanguard Group Inc65,617,338$4.86B0.09%+165,839+0.3%Added
BlackRock Inc.38,561,085$2.86B0.06%−325,365−0.8%Reduced
Principal Financial Group Inc19,370,975$1.44B0.85%−221,206−1.1%Reduced
Bamco Inc19,270,998$1.43B4.09%−66,620−0.3%Reduced
State Street Corp16,337,591$1.21B0.05%+211,417+1.3%Added
Janus Henderson Group PLC12,114,530$898.2M0.48%+306,503+2.6%Added
Massachusetts Financial Services Co11,384,572$844.1M0.26%−118,347−1.0%Reduced
Geode Capital Management, LLC11,072,579$819.0M0.07%+230,768+2.1%Added
Baillie Gifford & Co9,051,781$671.1M0.52%−201,972−2.2%Reduced
Akre Capital Management LLCSuperinvestorAkre Capital Management8,770,423$650.2M5.72%+1,508,797+20.8%Added
Macquarie Group Ltd8,449,865$626.5M0.72%−36,286−0.4%Reduced
Bank of New York Mellon Corp6,117,260$453.5M0.09%+124,761+2.1%Added
Artisan Partners Limited Partnership5,804,147$430.3M0.65%+101,127+1.8%Added
Norges Bank5,096,624$377.9M0.06%+201,012+4.1%Added
Bank of America Corp4,769,720$353.6M0.03%+432,358+10.0%Added
Blair William & Co4,397,738$326.0M1.01%−22,040−0.5%Reduced
Vulcan Value Partners, LLC4,138,987$306.8M4.68%+1,961,917+90.1%Added
Capital International Investors3,995,630$296.2M0.06%−42,341−1.0%Reduced
Brown Advisory Inc3,900,174$289.2M0.38%+187,716+5.1%Added
T. Rowe Price Investment Management, Inc.3,693,250$273.8M0.17%+64,953+1.8%Added
Morgan Stanley3,558,068$263.8M0.02%−466,393−11.6%Reduced
Northern Trust Corp3,527,149$261.5M0.04%−9,878−0.3%Reduced
Invesco Ltd.3,451,930$255.9M0.05%+392,134+12.8%Added
Ameriprise Financial Inc2,672,024$198.1M0.05%−371,906−12.2%Reduced
Capital Research Global Investors2,653,416$196.7M0.04%+6420.0%Added
Charles Schwab Investment Management Inc2,607,457$193.3M0.04%+65,823+2.6%Added
Franklin Resources Inc2,565,900$190.2M0.06%+52,408+2.1%Added
Goldman Sachs Group Inc2,441,966$181.0M0.04%−648,322−21.0%Reduced
Mackenzie Financial Corp2,358,526$174.9M0.26%+341,046+16.9%Added
Legal & General Group Plc2,294,708$170.1M0.05%+23,439+1.0%Added
UBS Asset Management Americas Inc2,086,256$154.7M0.04%+576,608+38.2%Added
Federated Hermes, Inc.1,968,574$146.0M0.35%−26,542−1.3%Reduced
BNP PARIBAS ASSET MANAGEMENT Holding S.A.1,950,417$144.6M0.37%+9,907+0.5%Added
Riverbridge Partners LLC1,927,442$142.9M1.94%−54,633−2.8%Reduced
DF Dent & Co Inc1,882,633$139.6M1.80%−64,969−3.3%Reduced
Ownership Capital B.V.1,751,764$129.9M3.51%−633,400−26.6%Reduced
Envestnet Asset Management Inc1,721,312$127.6M0.04%−2,626−0.2%Reduced
Westfield Capital Management Co LP1,719,913$127.5M0.63%+72,524+4.4%Added
Dimensional Fund Advisors LP1,697,933$125.9M0.03%+219,758+14.9%Added
FMR LLC1,606,496$119.1M0.01%+509,125+46.4%Added
RGM Capital, LLC1,598,078$118.5M4.75%00.0%Unchanged
Harding Loevner LP1,551,127$115.0M0.63%−50,064−3.1%Reduced
Price T Rowe Associates Inc1,444,551$107.1M0.01%−122,648−7.8%Reduced
Fayez Sarofim & Co1,407,801$104.4M0.28%+1,407,801New
Bares Capital Management, Inc.1,382,835$102.5M4.93%−195,900−12.4%Reduced
Voya Investment Management LLC1,371,099$101.7M0.10%−414,623−23.2%Reduced
JPMorgan Chase & Co1,357,154$100.6M0.01%−603,687−30.8%Reduced
Nuveen Asset Management, LLC1,294,673$96.0M0.03%+148,876+13.0%Added
Baird Financial Group, Inc.1,242,203$92.1M0.19%+103,662+9.1%Added
SEI Investments Co1,233,592$91.5M0.13%+27,656+2.3%Added
Eagle Asset Management Inc1,219,223$90.1M0.48%+175,972+16.9%Added
Swiss National Bank1,209,200$89.7M0.06%−13,700−1.1%Reduced
Wells Fargo & Company1,201,659$89.1M0.02%+194,948+19.4%Added
Barclays PLC1,175,395$87.1M0.04%+21,439+1.9%Added
Deutsche Bank AG1,163,835$86.3M0.04%+287,566+32.8%Added
American Century Companies Inc1,100,521$81.6M0.05%−912,955−45.3%Reduced
Ensign Peak Advisors, Inc1,059,525$78.6M0.14%−359,406−25.3%Reduced
William Blair Investment Management, LLC1,053,274$78.1M0.20%−389,954−27.0%Reduced
National Pension Service1,014,117$75.2M0.09%+42,454+4.4%Added
Beck Mack & Oliver LLC1,003,436$74.4M1.54%+135,494+15.6%Added
Kayne Anderson Rudnick Investment Management LLC976,643$72.4M0.18%−41,400−4.1%Reduced
Sumitomo Mitsui Trust Holdings, Inc.950,259$70.5M0.05%−85,416−8.2%Reduced
BNP Paribas Arbitrage, SA943,140$69.9M0.08%+177,647+23.2%Added
Pictet Asset Management Holding SA942,097$69.8M0.08%+18,611+2.0%Added
Chicago Capital, LLC912,184$67.6M2.01%−486−0.1%Reduced
HSBC Holdings PLC890,347$66.0M0.04%+227,509+34.3%Added
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management886,500$65.7M3.45%+10,000+1.1%Added
Royal Bank of Canada847,068$62.8M0.02%−14,632−1.7%Reduced
Spyglass Capital Management LLC841,304$62.4M4.57%+35,111+4.4%Added
American Capital Management Inc823,074$61.0M2.04%+9,475+1.2%Added
Select Equity Group, L.P.819,550$60.8M0.24%+819,550New
UBS Group AG782,197$58.0M0.02%−170,486−17.9%Reduced
Frontier Capital Management Co LLC779,123$57.8M0.57%−19,041−2.4%Reduced
Amundi772,907$57.1M0.02%−28,981−3.6%Reduced
Victory Capital Management Inc743,190$55.1M0.06%−12,266−1.6%Reduced
Rhumbline Advisers741,562$55.0M0.05%−43,377−5.5%Reduced
Ci Investments Inc.715,002$53.0M0.21%+2,164+0.3%Added
CIBC Private Wealth Group, LLC721,890$52.4M0.10%−341,349−32.1%Reduced
Citigroup Inc692,617$51.4M0.05%+101,962+17.3%Added
TimesSquare Capital Management, LLC689,961$51.2M0.80%−9,500−1.4%Reduced
California Public Employees Retirement System688,954$51.1M0.04%−20,796−2.9%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.671,643$49.8M0.06%+41,138+6.5%Added
California State Teachers Retirement System671,264$49.8M0.06%+14,705+2.2%Added
Peregrine Capital Management LLC632,348$46.9M1.37%+12,094+1.9%Added
Renaissance Technologies LLC629,780$46.7M0.08%+629,780New
Mitsubishi UFJ Trust & Banking Corp629,033$46.6M0.11%−40,646−6.1%Reduced
Bank of Montreal628,409$46.6M0.02%+184,682+41.6%Added
Raymond James & Associates628,112$46.6M0.03%+10,999+1.8%Added
Wellington Management Group LLP602,042$44.6M0.01%−2,635,204−81.4%Reduced
Quantum Capital Management, LLC567,635$42.1M4.76%−14,799−2.5%Reduced
Alliancebernstein L.P.563,008$41.7M0.01%+26,022+4.8%Added
Artemis Investment Management LLP556,931$41.3M0.56%+171,189+44.4%Added
CI Private Wealth, LLC540,676$40.1M0.07%+94,833+21.3%Added
Colony Group, LLC518,680$38.5M0.13%+518,680New
Jennison Associates LLC509,151$37.7M0.02%+2000.0%Added
Stephens Investment Management Group LLC485,592$36.0M0.50%−53,703−10.0%Reduced
Jupiter Asset Management Ltd471,906$35.0M0.33%+471,906New
Ironvine Capital Partners, LLC470,815$34.9M3.82%+17,067+3.8%Added
Twinbeech Capital LP470,674$34.9M0.69%+470,674New
TD Asset Management Inc468,128$34.7M0.03%+12,635+2.8%Added