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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
Ycg, LLC451,973$34.1M2.63%+6,764+1.5%Added
Allspring Global Investments Holdings, LLC451,560$34.1M0.05%+92,119+25.6%Added
Bridgewater Associates, LP423,073$31.9M0.18%+81,054+23.7%Added
State Board of Administration of Florida Retirement System420,994$31.8M0.06%−7,850−1.8%Reduced
Geneva Capital Management LLC420,700$31.7M0.53%+11,562+2.8%Added
Clearbridge Investments, LLC414,146$31.2M0.02%−35,764−7.9%Reduced
Frontier Capital Management Co LLC410,108$30.9M0.29%−369,015−47.4%Reduced
Ninety One UK Ltd409,301$30.9M0.08%+139,107+51.5%Added
Motley Fool Wealth Management, LLC394,453$29.8M1.49%+86,483+28.1%Added
Royal London Asset Management Ltd392,387$29.6M0.07%+6,500+1.7%Added
Great West Life Assurance Co368,042$27.8M0.05%+14,195+4.0%Added
Granahan Investment Management Inc363,332$27.4M1.08%−60,094−14.2%Reduced
Wellington Management Group LLP347,693$26.2M0.00%−254,349−42.2%Reduced
New York State Teachers Retirement System338,925$25.6M0.05%−11,306−3.2%Reduced
New York State Common Retirement Fund331,972$25.0M0.03%−46,973−12.4%Reduced
Artemis Investment Management LLP331,649$25.0M0.38%−225,282−40.5%Reduced
Mirae Asset Global ETFs Holdings Ltd.324,666$24.5M0.06%−2,764−0.8%Reduced
Ashford Capital Management Inc320,088$24.1M3.01%−700−0.2%Reduced
Kornitzer Capital Management Inc318,616$24.0M0.44%+32,290+11.3%Added
CIBC Private Wealth Group, LLC318,053$24.0M0.04%−403,837−55.9%Reduced
National Bank of Canada293,148$22.1M0.03%+130,045+79.7%Added
Manufacturers Life Insurance Company, The289,470$21.8M0.02%+8,169+2.9%Added
Fred Alger Management, LLC289,056$21.8M0.11%+3,811+1.3%Added
Assenagon Asset Management S.A.287,441$21.7M0.04%−81,850−22.2%Reduced
Baskin Financial Services Inc.286,068$21.6M1.77%+5,388+1.9%Added
Russell Investments Group, Ltd.285,508$21.5M0.03%−2,534−0.9%Reduced
Asset Management One Co.,Ltd.282,828$21.3M0.08%+32,302+12.9%Added
Aureus Asset Management, LLC279,807$21.1M1.38%+279,807New
First Trust Advisors LP278,321$21.0M0.02%−99,835−26.4%Reduced
Stifel Financial Corp269,038$20.3M0.02%−1,892−0.7%Reduced
Citadel Advisors LLC252,288$19.0M0.02%−214,409−45.9%Reduced
Adage Capital Partners GP, L.L.C.252,152$19.0M0.03%−26,548−9.5%Reduced
Swedbank AB248,043$18.7M0.02%+204,474+469.3%Added
Sandhill Capital Partners LLC238,881$18.0M1.28%−2,263−0.9%Reduced
Parnassus Investments230,669$17.4M0.04%−117,538−33.8%Reduced
State of Wisconsin Investment Board230,645$17.4M0.04%−4,840−2.1%Reduced
Erste Asset Management GmbH230,000$17.4M0.21%+35,000+17.9%Added
Chevy Chase Trust Holdings, Inc.222,449$16.8M0.05%−484−0.2%Reduced
Korea Investment CORP221,704$16.7M0.04%+56,553+34.2%Added
Rafferty Asset Management, LLC209,947$15.8M0.05%−14,449−6.4%Reduced
Thrivent Financial for Lutherans209,626$15.8M0.03%+3,023+1.5%Added
Millennium Management LLC207,193$15.6M0.01%−108,389−34.3%Reduced
Scout Investments, Inc.200,111$15.3M0.40%+67,574+51.0%Added
Jupiter Asset Management Ltd199,355$15.0M0.13%−272,551−57.8%Reduced
Cortland Associates Inc192,674$14.5M1.77%+192,674New
Northwestern Mutual Wealth Management Co191,573$14.5M0.01%+26,507+16.1%Added
Gilder Gagnon Howe & Co LLC189,311$14.3M0.17%+25,791+15.8%Added
Archon Partners LLC185,500$14.0M1.62%00.0%Unchanged
NS Partners Ltd182,417$13.8M0.58%+3,836+2.1%Added
Badgley Phelps Wealth Managers, LLC182,246$13.7M0.32%−1,140−0.6%Reduced
2Xideas AG181,657$13.7M1.85%+62,670+52.7%Added
DekaBank Deutsche Girozentrale183,640$13.6M0.03%−59,783−24.6%Reduced
Danske Bank A/S180,099$13.6M0.05%+6,157+3.5%Added
STRS Ohio178,500$13.5M0.05%−31,500−15.0%Reduced
Caden Capital Partners, LP177,692$13.4M4.52%+177,692New
Zurcher Kantonalbank (Zurich Cantonalbank)177,562$13.4M0.04%+13,873+8.5%Added
Treasurer of the State of North Carolina177,378$13.4M0.05%−2,731−1.5%Reduced
Renaissance Technologies LLC175,180$13.2M0.02%−454,600−72.2%Reduced
CIBC World Markets Corp172,873$13.0M0.09%+90,719+110.4%Added
Prana Capital Management, LP170,982$12.9M0.59%−29,661−14.8%Reduced
Hampton Road Capital Management LP168,178$12.7M2.17%+168,178New
Foster Victor Wealth Advisors, LLC166,892$12.6M1.01%+42,938+34.6%Added
Spence Asset Management167,454$12.6M3.07%+167,454New
Mediolanum International Funds Ltd161,913$12.1M0.17%+20,942+14.9%Added
Alyeska Investment Group, L.P.160,227$12.1M0.06%+88,764+124.2%Added
Oppenheimer Asset Management Inc.158,130$11.9M0.14%−2,205−1.4%Reduced
Walleye Capital LLC155,813$11.8M0.12%+31,492+25.3%Added
Teachers Retirement System of the State of Kentucky155,552$11.7M0.10%−1,867−1.2%Reduced
State of New Jersey Common Pension Fund D150,739$11.4M0.05%00.0%Unchanged
Nicholas Company, Inc.150,600$11.4M0.18%+27,975+22.8%Added
Public Employees Retirement System of Ohio148,391$11.2M0.05%−41,895−22.0%Reduced
Truist Financial Corp148,095$11.2M0.02%−108,117−42.2%Reduced
Corebridge Financial, Inc.146,625$11.1M0.06%−3,319−2.2%Reduced
Toronto Dominion Bank143,575$10.8M0.02%−61,415−30.0%Reduced
LGT Group Foundation142,118$10.7M0.17%−1,029−0.7%Reduced
Kelly Lawrence W & Associates Inc138,940$10.5M2.36%+1,424+1.0%Added
Cetera Investment Advisers138,246$10.4M0.02%−11,715−7.8%Reduced
LPL Financial LLC137,606$10.4M0.00%+24,513+21.7%Added
Nomura Asset Management Co Ltd135,039$10.2M0.03%+8,326+6.6%Added
Storebrand Asset Management AS132,583$10.0M0.03%+3,378+2.6%Added
Pragma Gestao de Patrimonio Ltd130,000$9.81M5.07%−13,000−9.1%Reduced
Standard Life Aberdeen plc130,150$9.80M0.02%+54,713+72.5%Added
Robeco Institutional Asset Management B.V.128,049$9.66M0.02%−178,421−58.2%Reduced
CIBC Asset Management Inc127,091$9.59M0.03%+7,304+6.1%Added
Engineers Gate Manager LP126,903$9.57M0.19%−103,376−44.9%Reduced
RedJay Asset Management Inc.125,000$9.43M5.37%+125,000New
Mirae Asset Global Investments Co., Ltd.124,898$9.37M0.04%+8,698+7.5%Added
Resona Asset Management Co.,Ltd.123,315$9.30M0.05%−634−0.5%Reduced
State of Michigan Retirement System120,600$9.10M0.05%−200−0.2%Reduced
Jane Street Group, LLC117,557$8.87M0.01%−69,844−37.3%Reduced
Arizona State Retirement System117,036$8.83M0.06%+4,846+4.3%Added
Handelsbanken Fonder AB113,696$8.58M0.03%+2,414+2.2%Added
Taikang Asset Management (Hong Kong) Co Ltd112,388$8.48M0.89%+56,194+100.0%Added
Guggenheim Capital LLC111,040$8.38M0.06%−3,481−3.0%Reduced
FIL Ltd110,176$8.31M0.01%+91,386+486.4%Added
Azimuth Capital Investment Management LLC110,064$8.30M0.32%−13,714−11.1%Reduced
Comerica Bank109,979$8.30M0.03%−25,545−18.8%Reduced
MetLife Investment Management106,491$8.03M0.05%−2,377−2.2%Reduced
Sterling Capital Management LLC105,819$7.98M0.10%+105,819New
Thematics Asset Management105,814$7.98M0.32%00.0%Unchanged