Aon Plc (AON) Stock Institutional Trading Activity


Aon Plc (AON) 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, Viking Global Investors, Berkshire Hathaway, Eagle Capital Management, and Cantillon Capital Management. 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 2024Viking Global InvestorsBuy157,337720,364$258,725,934
Q4 2024Jensen Investment ManagementBuy708,830$3,171,383
Q3 2024Sequoia Financial AdvisorsBuy5,10112,721$4,401,331
Q3 2024Renaissance Technologies LLCBuy103,300181,301$62,728,333
Q3 2024Polen Capital ManagementSell-40,552781,489$270,387,305
Q3 2024Meritage GroupSell-95,837996,211$344,679,044
Q3 2024Cantillon Capital ManagementBuy177,9561,316,218$455,398,266
Q3 2024Eagle Capital ManagementSell-14,8843,986,248$1,379,201,946
Q3 2024Viking Global InvestorsSell-141,612563,027$194,801,712
Q2 2024Matrix Advisors Value FundBuy691691$203,000
Q2 2024Sequoia Financial AdvisorsSell-887,620$2,237,068
Q2 2024Renaissance Technologies LLCSell-143,70078,001$22,899,534
Q2 2024Polen Capital ManagementSell-8,075822,041$241,334,908
Q2 2024Meritage GroupBuy317,5341,092,048$320,603,452
Q2 2024Cantillon Capital ManagementSell-57,9281,138,262$334,170,958
Q2 2024Eagle Capital ManagementBuy1,211,5984,001,132$1,174,652,333
Q2 2024Jensen Investment ManagementBuy1,2608,760$2,571,761
Q1 2024Yacktman Asset ManagementBuy11,67011,670$3,894,512
Q1 2024Renaissance Technologies LLCBuy92,261221,701$73,986
Q1 2024Meritage GroupSell-67,458774,514$258,471
Q1 2024Sequoia Financial AdvisorsSell-1,2107,708$2,572,385
Q1 2024Polen Capital ManagementBuy10,930830,116$277,026,204
Q1 2024Cantillon Capital ManagementSell-23,9841,196,190$399,192,527
Q1 2024Eagle Capital ManagementBuy807,9452,789,534$930,923,286
Q1 2024Jensen Investment ManagementBuy2,1607,500$2,502,900
Q4 2023Renaissance Technologies LLCBuy77,640129,440$37,670
Q4 2023Sequoia Financial AdvisorsBuy1,7968,918$2,595,301
Q4 2023Polen Capital ManagementBuy3,896819,186$238,524,750
Q4 2023Cantillon Capital ManagementSell-29,7931,220,174$355,095,037
Q4 2023Eagle Capital ManagementBuy241,3001,981,589$576,682,031

Frequently asked questions about AON activity

  • Which institutional owners are buying AON?

    Institutional owners buying AON 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 AON activity?

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

  • Is institutional interest in AON increasing?

    Institutional interest in AON 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.