COSTAR GROUP INC (CSGP) Institutional Ownership Changes & 13F Activity

COSTAR GROUP INC (CSGP) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Polen Capital Management, Meritage Group, Tiger Global Management, Akre Capital Management, and ShawSpring Partners.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2025ShawSpring PartnersBuy207,7581,356,060$109,027,224
Q2 2025Bares Capital ManagementBuy81,6501,214,652$97,658,021
Q2 2025Sequoia Financial AdvisorsBuy4,50650,579$4,066,522
Q2 2025Akre Capital ManagementSell-4,3609,309,232$748,462,253
Q1 2025Third PointSell-3,712,8191,975,000$156,479,250
Q1 2025Bares Capital ManagementBuy483,7971,133,002$89,767,748
Q1 2025Vulcan Value PartnersSell-265,9614,833,477$382,949,626
Q1 2025ShawSpring PartnersBuy238,4991,148,302$90,979,967
Q1 2025Polen Capital ManagementBuy104,6126,601,800$523,060,632
Q1 2025Sequoia Financial AdvisorsBuy36,31046,073$3,650,369
Q1 2025Akre Capital ManagementSell-2889,313,592$737,915,894
Q4 2024Polen Capital ManagementBuy6,497,1886,497,188$465,133,668
Q4 2024Tiger Global ManagementBuy3,245,1093,245,109$232,317,353
Q4 2024ShawSpring PartnersBuy909,803909,803$65,132,797
Q4 2024Vulcan Value PartnersBuy669,5495,099,438$364,962,559
Q4 2024Akre Capital ManagementBuy379,7879,313,880$666,780,669
Q4 2024Parnassus Endeavor FundSell-218,66012,009$859,724
Q4 2024Viking Global InvestorsSell-98,4921,162,703$83,237,908
Q4 2024Sequoia Financial AdvisorsBuy2,3289,763$698,920
Q4 2024Bares Capital ManagementBuy738649,205$46,476,586
Q3 2024Viking Global InvestorsBuy1,190,2461,261,195$95,144,551
Q3 2024Bares Capital ManagementSell-734,368648,467$48,920,350
Q3 2024Renaissance Technologies LLCSell-454,600175,180$13,215,579
Q3 2024Vulcan Value PartnersBuy290,9024,429,889$334,190,810
Q3 2024Akre Capital ManagementBuy163,6708,934,093$673,987,976
Q3 2024Parnassus Endeavor FundSell-117,538230,669$17,401,670
Q3 2024Sequoia Financial AdvisorsBuy1,5077,435$560,883
Q2 2024Vulcan Value PartnersBuy1,961,9174,138,987$306,831
Q2 2024Akre Capital ManagementBuy1,508,7978,770,423$650,239,161
Q2 2024Renaissance Technologies LLCSell-744,700629,780$46,691,889

Frequently asked questions about CSGP activity

  • Which institutional owners are buying CSGP?

    Institutional owners buying CSGP include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CSGP activity?

    "Buy" means an investor increased their reported position in CSGP compared to the prior reporting period. This reflects growing exposure to COSTAR GROUP INC (CSGP) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CSGP increasing?

    Institutional interest in CSGP can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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