NASDAQ: CSGP
Costar Group Inc Stock Ownership - Who owns Costar Group?

Insider buying vs selling

Have Costar Group Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
John W. HillDirector2025-11-132,250$68.68
$154.53kSell
Cynthia Cammett CannChief Accounting Officer2025-11-131,841$68.79
$126.64kSell
Frederick G. SaintPresident Marketplaces2025-08-2825,000$90.33
$2.26MSell
Frederick G. SaintPresident Marketplaces2025-08-011,436$95.19
$136.69kSell
Cynthia Cammett CannChief Accounting Officer2025-08-01719$95.19
$68.44kSell
Frederick G. SaintPresident Marketplaces2025-07-2825,000$93.23
$2.33MSell
Cynthia Cammett CannChief Accounting Officer2025-07-282,033$92.85
$188.76kSell
Christian M. LownChief Financial Officer2025-07-014,666$80.40
$375.15kSell
Cynthia Cammett CannChief Accounting Officer2025-06-15461$81.16
$37.41kSell
Frederick G. SaintPresident Marketplaces2025-06-1125,000$81.10
$2.03MSell

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Net Insider Buy/Sell (L12M) Ownership

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CSGP Shareholders

What type of owners hold Costar Group Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Vanguard Group Inc16.53%70,056,441$4.85BInstitution
Blackrock Inc8.53%36,133,158$2.50BInstitution
Bamco Inc4.54%19,255,566$1.33BInstitution
Principal Financial Group Inc4.39%18,623,370$1.29BInstitution
State Street Corp4.31%18,284,128$1.27BInstitution
Geode Capital Management LLC2.97%12,601,455$872.02MInstitution
Akre Capital Management LLC2.20%9,306,485$644.01MInstitution
Morgan Stanley2.02%8,543,024$591.18MInstitution
Baillie Gifford Co1.94%8,241,642$570.32MInstitution
Massachusetts Financial Services Co1.75%7,406,788$512.55MInstitution

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CSGP vs Real Estate Service Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
CSGP97.48%1.48%Net SellingNet Selling
BEKE5.71%0.00%
JLL90.78%2.77%Net SellingNet Selling
CBRE65.01%34.99%Net SellingNet Selling
CIGI70.67%20.11%

Costar Group Stock Ownership FAQ

Who owns Costar Group?

Costar Group (NASDAQ: CSGP) is owned by 97.48% institutional shareholders, 1.48% Costar Group insiders, and 1.04% retail investors. Vanguard Group Inc is the largest individual Costar Group shareholder, owning 70.06M shares representing 16.53% of the company. Vanguard Group Inc's Costar Group shares are currently valued at $4.75B.

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