ICON PLC (ICLR) Stock Institutional Trading Activity


ICON PLC (ICLR) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Polen Capital Management, Cullen Value Fund, Greenhaven Associates, Muhlenkamp & Co, and Sequoia Fund. 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
Q4 2025Polen Capital ManagementSell-338,255105,206$19,170,588
Q4 2025Greenhaven AssociatesSell-1517,394$3,169,535
Q4 2025Cullen Value FundSell-5082,173$394,139
Q3 2025Brave Warrior AdvisorsSell-2,0003,000$525,000
Q3 2025Muhlenkamp & CoBuy73,46773,467$12,856,725
Q3 2025Polen Capital ManagementSell-96,949443,461$77,605,716
Q3 2025Sequoia FundSell-7,1891,700,994$297,673,950
Q3 2025Greenhaven AssociatesSell-22417,409$3,046,575
Q3 2025Cullen Value FundSell-2052,681$519,819
Q2 2025Parnassus Endeavor FundSell-36853,539$7,787,248
Q2 2025Renaissance Technologies LLCBuy145,900324,824$47,245,651
Q2 2025Cantillon Capital ManagementBuy465,197465,197$67,662,904
Q2 2025Polen Capital ManagementSell-94,642540,410$78,602,580
Q2 2025Sequoia FundBuy453,8331,708,183$248,455,217
Q2 2025Greenhaven AssociatesBuy17,63317,633$2,564,720
Q2 2025Cullen Value FundSell-1,2512,886$419,769
Q1 2025Baupost GroupBuy405,000405,000$70,871
Q1 2025Brave Warrior AdvisorsBuy2,0005,000$874,950
Q1 2025Parnassus Endeavor FundBuy53,90753,907$9,433,186
Q1 2025Renaissance Technologies LLCBuy53,125178,924$31,309,911
Q1 2025Polen Capital ManagementSell-76,458635,052$111,127,679
Q1 2025Sequoia FundSell-11,1901,254,350$219,498,707
Q1 2025Cullen Value FundSell-8434,137$723,934
Q4 2024Causeway Capital ManagementBuy1,2501,250$262,138
Q4 2024Brave Warrior AdvisorsBuy2,0503,000$629,130
Q4 2024Renaissance Technologies LLCSell-86,300125,799$26,381,308
Q4 2024Polen Capital ManagementSell-342,260711,510$149,210,727
Q4 2024Sequoia FundBuy1,265,5401,265,540$265,396,393
Q4 2024Cullen Value FundSell-1004,980$1,044,356
Q3 2024Renaissance Technologies LLCSell-13,900212,099$60,938,164

Frequently asked questions about ICLR activity

  • Which institutional owners are buying ICLR?

    Institutional owners buying ICLR 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 ICLR activity?

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

  • Is institutional interest in ICLR increasing?

    Institutional interest in ICLR 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.