COSTAR GROUP INC (CSGP) Stock Institutional Trading Activity


COSTAR GROUP INC (CSGP) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q1 2026), investors with some of the largest reported share count changes include Sequoia Financial Advisors, Polen Capital Management, Tiger Global Management, Vulcan Value Partners, and Viking Global Investors. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Sequoia Financial AdvisorsBuy37751,688$2,085,114
Q4 2025Vulcan Value PartnersBuy653,4124,485,021$301,527
Q4 2025ShawSpring PartnersBuy61,523957,557$64,386,133
Q4 2025Tiger Global ManagementSell-986,0002,259,109$151,902,489
Q4 2025Third PointBuy148,0003,165,000$212,814,600
Q4 2025Polen Capital ManagementSell-1,489,9734,890,936$328,866,546
Q4 2025Akre Capital ManagementBuy311,3209,617,805$646,701,208
Q4 2025Viking Global InvestorsSell-407,1471,442,582$96,999,214
Q3 2025Bares Capital ManagementBuy11,5991,226,251$103,458,797
Q3 2025Sequoia Financial AdvisorsBuy73251,311$4,329,098
Q3 2025Parnassus Endeavor FundSell-18,424636,974$53,741,496
Q3 2025ShawSpring PartnersSell-460,026896,034$75,598,389
Q3 2025Third PointSell-68,0003,017,000$254,544,290
Q3 2025Vulcan Value PartnersBuy115,1253,831,609$323,203,808
Q3 2025Polen Capital ManagementSell-542,9196,380,909$538,357,326
Q3 2025Akre Capital ManagementSell-2,7479,306,485$785,188,139
Q3 2025Viking Global InvestorsSell-1,368,8391,849,729$156,061,636
Q2 2025Bares Capital ManagementBuy81,6501,214,652$97,658,021
Q2 2025Sequoia Financial AdvisorsBuy4,50650,579$4,066,522
Q2 2025Parnassus Endeavor FundBuy643,389655,398$52,693,999
Q2 2025ShawSpring PartnersBuy207,7581,356,060$109,027,224
Q2 2025Third PointBuy1,110,0003,085,000$248,034,000
Q2 2025Vulcan Value PartnersSell-1,116,9933,716,484$309,132,636
Q2 2025Polen Capital ManagementBuy322,0286,923,828$556,675,810
Q2 2025Akre Capital ManagementSell-4,3609,309,232$748,462,253
Q2 2025Viking Global InvestorsBuy2,055,8653,218,568$258,772,867
Q1 2025Bares Capital ManagementBuy483,7971,133,002$89,767,748
Q1 2025Sequoia Financial AdvisorsBuy36,31046,073$3,650,369
Q1 2025ShawSpring PartnersBuy238,4991,148,302$90,979,967
Q1 2025Third PointSell-3,712,8191,975,000$156,479,250

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.