CoStar Group Inc (CSGP) Ownership

75.34 ↑0.00 (0.00%)
As of December 31, 1969, 7:00pm EST.

Institutional Ownership

Vanguard Group Inc is the biggest individual institutional holder of CoStar Group Inc (CSGP), owning a total of 65.7 million shares. Combined, the top 43 institutional holders of CSGP own 93.30% of the company with a total of 382.4 million shares.

In the latest ownership report on December 31st 2024, the top 43 institutional holders increased their combined ownership of CSGP by 12.1 million shares. 13 institutions bought 19,037,604 total additional shares and increased their ownership by an average of 20.14%. However 8 institutions sold 6,949,751 total shares and decreased their ownership by an average of 7.78%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of CoStar Group increased by a net total of 12,087,853 in the latest quarter.

Institution Ownership Chart

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Latest Institutional Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard Group Inc16.024%-0.056%65,717,391-36,9292024-12-31
BlackRock Inc9.294%-1.981%38,115,694-770,1992024-12-31
BAMCO Inc4.682%2.226%19,203,564418,1282024-12-31
Principal Financial Group Inc4.678%-1.038%19,186,275-201,2442024-12-31
State Street Corp4.153%-0.163%17,031,876-27,8682024-12-31
Capital Research & Mgmt Co - Division 33.422%44.856%14,032,3634,345,2672024-12-31
Geode Capital Management, LLC2.798%1.475%11,475,755166,7692024-12-31
Akre Capital Management, LLC2.271%4.251%9,313,880379,7872024-12-31
Baillie Gifford & Co Limited.1.929%-10.087%7,911,598-887,5332024-12-31
Macquarie Group Ltd1.787%-3.893%7,327,067-296,8042024-12-31
Massachusetts Financial Services Company1.730%-37.666%7,093,743-4,286,4492024-12-31
Polen Capital1.584%0.000%6,497,1886,497,1882024-12-31
T. Rowe Price Investment Management,Inc.1.564%24.614%6,415,8951,267,2632024-12-31
Mackenzie Investments1.432%109.159%5,871,1183,064,0992024-12-31
Bank of New York Mellon Corp1.352%-7.394%5,545,069-442,7252024-12-31
NORGES BANK1.331%7.095%5,458,231361,6072024-12-31
Vulcan Value Partners, LLC1.243%15.114%5,099,438669,5492024-12-31
Morgan Stanley - Brokerage Accounts1.058%18.229%4,340,263669,1972024-12-31
Amvescap Plc.1.033%12.965%4,234,995486,0452024-12-31
Northern Trust Corp0.974%21.171%3,993,324697,7212024-12-31
Franklin Resources Inc0.530%0.674%2,237,11714,9842024-12-31

Top Institutions

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard Group Inc16.024%-0.056%65,717,391-36,9292024-12-31
BlackRock Inc9.294%-1.981%38,115,694-770,1992024-12-31
BAMCO Inc4.682%2.226%19,203,564418,1282024-12-31
Principal Financial Group Inc4.678%-1.038%19,186,275-201,2442024-12-31
State Street Corp4.153%-0.163%17,031,876-27,8682024-12-31
State Street Corporation3.935%1.959%16,126,174309,8842024-03-31
Capital Research & Mgmt Co - Division 33.422%44.856%14,032,3634,345,2672024-12-31
Geode Capital Management, LLC2.798%1.475%11,475,755166,7692024-12-31
MFS Investment Management KK2.776%-0.039%11,380,192-4,3802024-09-30
Akre Capital Management, LLC2.271%4.251%9,313,880379,7872024-12-31
Parnassus Investments, LLC2.099%1.001%8,534,48884,6032022-09-30
Baillie Gifford & Co Limited.1.929%-10.087%7,911,598-887,5332024-12-31
Macquarie Group Ltd1.787%-3.893%7,327,067-296,8042024-12-31
Massachusetts Financial Services Company1.730%-37.666%7,093,743-4,286,4492024-12-31
T. Rowe Price Associates, Inc.1.635%-24.119%6,678,381-2,122,7662022-12-31
HHG PLC1.617%-45.295%6,627,229-5,487,3012024-09-30
Polen Capital1.584%0.000%6,497,1886,497,1882024-12-31
T. Rowe Price Investment Management,Inc.1.564%24.614%6,415,8951,267,2632024-12-31
Goldman Sachs Group Inc1.470%153.139%6,003,6363,631,9592023-12-31
Mackenzie Investments1.432%109.159%5,871,1183,064,0992024-12-31
Artisan Partners Limited Partnership1.375%-2.906%5,635,481-168,6662024-09-30
Bank of New York Mellon Corp1.352%-7.394%5,545,069-442,7252024-12-31
NORGES BANK1.331%7.095%5,458,231361,6072024-12-31
Sands Capital Management, LLC1.312%-4.365%5,375,482-245,3192024-03-31
Findlay Park Partners LLP1.305%-22.792%5,307,777-1,566,8322022-09-30
Vulcan Value Partners, LLC1.243%15.114%5,099,438669,5492024-12-31
JPMorgan Chase & Co1.152%73.770%4,716,6622,002,3542024-09-30
Morgan Stanley - Brokerage Accounts1.058%18.229%4,340,263669,1972024-12-31
Amvescap Plc.1.033%12.965%4,234,995486,0452024-12-31
Bank of America Corp1.027%-11.762%4,208,707-561,0132024-09-30
American Century Companies Inc1.007%-2.831%4,114,129-119,8772022-12-31
Northern Trust Corp0.974%21.171%3,993,324697,7212024-12-31
Ownership Capital BV0.957%-2.913%3,907,967-117,2372023-06-30
Ameriprise Financial Inc0.949%-15.910%3,873,418-732,8422023-03-31
Blair William & Co0.939%-12.436%3,850,836-546,9022024-09-30
Brown Advisory Holdings Inc0.919%-3.423%3,766,658-133,5162024-09-30
Wellington Management Company LLP0.832%-3.454%3,384,298-121,0722022-09-30
Capital Research Global Investors0.726%12.186%2,976,770323,3542024-09-30
Legal & General Group PLC0.711%2.147%2,914,29861,2592024-09-30
Charles Schwab Investment Management Inc0.655%2.950%2,684,37376,9162024-09-30
Franklin Resources Inc0.530%0.674%2,237,11714,9842024-12-31
Amundi0.527%179.475%2,160,0861,387,1792024-09-30
UBS Asset Mgmt Americas Inc0.511%0.479%2,096,2559,9992024-09-30

Mutual Fund Ownership

Vanguard Real Estate Index Investor is the biggest individual fund holder of CoStar Group Inc (CSGP), owning a total of 16.1 million shares. Combined, the top 41 mutual fund holders of CSGP own 67.26% of the company with a total of 275.7 million shares.

In the latest ownership report on March 31st 2025, the top 41 fund holders increased their combined ownership of CSGP by 1 million shares. 6 funds bought 1,868,587 total additional shares and increased their ownership by an average of 4.07%. However 11 funds sold 835,459 total shares and decreased their ownership by an average of 1.31%.

Overall this is a positive sign as the number of shares owned by the top 20 mutual funds holding CoStar Group increased by a net total of 1,033,128 in the latest report.

Mutual Funds Chart

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Latest Mutual Fund Ownership Changes

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard Real Estate Index Investor3.919%2.592%16,073,382406,0302025-03-31
Vanguard Total Stock Mkt Idx Inv3.252%2.652%13,336,768344,5242025-03-31
Vanguard Institutional 500 Index Trust2.856%3.013%11,712,444342,5692025-03-31
Principal MidCap R52.669%-0.286%10,945,165-31,4072025-03-31
Principal Aligned MidCap Equity2.669%-0.788%10,945,165-86,8822025-03-31
Vanguard Mid Cap Index Institutional2.215%-0.242%9,082,472-22,0012025-03-31
Invesco QQQ Trust2.058%-0.087%8,438,620-7,3262025-03-31
Baron Partners Retail1.712%-1.955%7,020,000-140,0002025-03-31
American Funds Growth Fund of Amer A1.366%-0.167%5,602,415-9,3632025-03-31
American Funds AMCAP A1.310%7.615%5,372,841380,2042025-03-31
SPDR® S&P 500 ETF1.278%-1.445%5,242,270-76,8802025-03-31
iShares Core S&P 500 ETF1.254%0.290%5,143,14914,8802025-03-31
SPDR® S&P 500® ETF Trust1.210%-0.522%5,103,142-26,7842025-03-31
SPDR® S&P 500® ETF1.230%-1.653%5,045,110-84,8162025-03-31
Vanguard Growth Index Investor1.212%8.284%4,971,891380,3802025-03-31
Baron Small Cap Growth Strategy1.140%-3.608%4,675,000-175,0002025-03-31
Baron Growth Retail1.140%-3.608%4,675,000-175,0002025-03-31

Top Mutual Funds

OwnerPercent OwnedPercent ChangeShares OwnedShare ChangeDate Reported
Vanguard Real Estate Index Investor3.919%2.592%16,073,382406,0302025-03-31
Vanguard Total Stock Mkt Idx Inv3.252%2.652%13,336,768344,5242025-03-31
Vanguard US Total Market Shares ETF3.165%0.568%12,980,95373,3122024-09-30
Vanguard Instl Ttl Stck Mkt Idx Tr3.086%1.916%12,602,550236,8902023-03-31
Vanguard Institutional 500 Index Trust2.856%3.013%11,712,444342,5692025-03-31
Principal MidCap R52.669%-0.286%10,945,165-31,4072025-03-31
Principal Aligned MidCap Equity2.669%-0.788%10,945,165-86,8822025-03-31
PGI Mid-Cap Equity2.567%0.152%10,482,12415,9262023-06-30
Vanguard 500 Index Investor2.409%0.555%9,835,90454,2522023-08-31
Vanguard Mid Cap Index Institutional2.215%-0.242%9,082,472-22,0012025-03-31
Invesco QQQ Trust2.058%-0.087%8,438,620-7,3262025-03-31
Akre Focus Instl2.033%0.000%8,337,74602025-01-31
Baron Partners Retail1.712%-1.955%7,020,000-140,0002025-03-31
Capital Group Growth Fnd of Amer Comp1.368%55.991%5,611,7782,014,2672024-12-31
American Funds Growth Fund of Amer A1.366%-0.167%5,602,415-9,3632025-03-31
American Funds AMCAP A1.310%7.615%5,372,841380,2042025-03-31
Janus Concentrated Growth CF1.303%4.869%5,335,519247,7412024-06-30
Findlay Park American ICAV USD1.305%-16.422%5,307,777-1,042,8702022-09-30
SPDR® S&P 500 ETF1.278%-1.445%5,242,270-76,8802025-03-31
iShares Core S&P 500 ETF1.254%0.290%5,143,14914,8802025-03-31
MFS Growth B1.253%-0.058%5,134,955-2,9522024-09-30
MFS Growth Equity1.253%-0.058%5,134,955-2,9522024-09-30
Fidelity 500 Index1.252%0.447%5,134,49622,8652025-02-28
SPDR® S&P 500® ETF Trust1.210%-0.522%5,103,142-26,7842025-03-31
SPDR® S&P 500® ETF1.230%-1.653%5,045,110-84,8162025-03-31
Capital Group AMCAP Composite1.217%22.018%4,992,637900,9242024-12-31
VA CollegeAmerica Amcap 529A1.218%22.018%4,992,637900,9242024-12-31
Vanguard Growth Index Investor1.212%8.284%4,971,891380,3802025-03-31
SPDR® S&P 500 ETF Trust1.193%0.700%4,872,22333,8802024-05-30
Fidelity® 500 Index1.165%0.640%4,758,27230,2802023-11-30
Parnassus Core Equity Investor1.170%0.000%4,756,07502022-10-31
Baron Small Cap Growth Strategy1.140%-3.608%4,675,000-175,0002025-03-31
Baron Growth Retail1.140%-3.608%4,675,000-175,0002025-03-31
Sands Select Growth Equity1.128%1,709.820%4,586,6624,333,2302022-12-31
Janus Henderson Forty S1.091%-16.222%4,470,005-865,5142024-07-31
T. Rowe Price New Horizons0.984%-26.728%4,000,413-1,459,2562022-12-31
American Funds Invmt Co of Amer A0.926%0.000%3,903,86102024-12-31
Capital Group Investment Co of Amer Comp0.952%0.000%3,903,86102024-12-31
BlackRock Mid-Cap Growth Equity Instl0.939%0.000%3,848,77402024-08-31
T. Rowe Price US Mid-Cap Growth Equity0.899%-0.439%3,672,300-16,2002023-09-30
T. Rowe Price Mid-Cap Growth0.899%-0.439%3,672,300-16,2002023-09-30

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