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
Q1 2016Disciplined Growth InvestorsSell-15540,414$7,605
Q4 2015Disciplined Growth InvestorsSell-21540,569$8,385
Q3 2015Renaissance Technologies LLCBuy44,20063,198$10,937
Q3 2015Disciplined Growth InvestorsBuy1,29040,784$7,058
Q2 2015Disciplined Growth InvestorsSell-15,59539,494$7,949
Q1 2015Disciplined Growth InvestorsBuy5055,089$10,898
Q4 2014Disciplined Growth InvestorsSell-2,13555,039$10,107
Q4 2014Sequoia Financial AdvisorsSell-4651,102$202
Q3 2014Renaissance Technologies LLCSell-73,00018,998$2,955
Q3 2014Disciplined Growth InvestorsSell-13,97657,174$8,893
Q2 2014Renaissance Technologies LLCSell-58,59891,998$14,551
Q2 2014Disciplined Growth InvestorsSell-4,62571,150$13,133
Q2 2014Sequoia Financial AdvisorsBuy701,567$248
Q1 2014Renaissance Technologies LLCBuy130,298150,596$28,122
Q1 2014Disciplined Growth InvestorsBuy3,80075,775$8,294
Q1 2014Sequoia Financial AdvisorsBuy1621,497$280
Q4 2013Renaissance Technologies LLCBuy18,80420,298$3,747
Q4 2013Disciplined Growth InvestorsSell-2,77571,975$13,285
Q4 2013Sequoia Financial AdvisorsBuy1,3351,335$246
Q3 2013Renaissance Technologies LLCSell-26,5321,494$251
Q3 2013Disciplined Growth InvestorsSell-72574,750$12,551
Q2 2013Disciplined Growth InvestorsBuy75,47575,475$9,742
Q2 2013Renaissance Technologies LLCBuy28,02628,026$3,617

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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