Aon Plc (AON) Institutional Ownership Changes & 13F Activity

Aon Plc (AON) 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 Eagle Capital Management, Baupost Group, Polen Capital Management, Meritage Group, and Viking Global Investors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Eagle Capital ManagementSell-1,806,064463,350$149,560,031
Q1 2026Baupost GroupBuy769,000769,000$248,218
Q1 2026Polen Capital ManagementSell-492,2411,354,053$437,061,344
Q1 2026Meritage GroupSell-316,042680,169$219,544,950
Q1 2026Viking Global InvestorsBuy303,4641,087,114$350,898,657
Q1 2026Dodge & Cox Stock FundBuy263,6398,116,095$2,619,713,144
Q1 2026Cantillon Capital ManagementSell-147,4441,095,574$353,629,376
Q1 2026Renaissance Technologies LLCSell-23,50011,601$3,744,571
Q1 2026Jensen Investment ManagementBuy14,96625,569$8,253,162
Q1 2026Cullen Value FundBuy7,6967,696$2,484,115
Q1 2026Sequoia Financial AdvisorsBuy70515,907$5,134,400
Q4 2025Dodge & Cox Stock FundBuy4,387,7737,852,456$2,770,974,673
Q4 2025Polen Capital ManagementSell-643,8731,846,294$651,520,305
Q4 2025Viking Global InvestorsSell-630,968783,650$276,534,412
Q4 2025Berkshire HathawaySell-497,0053,602,995$1,271,424,876
Q4 2025Eagle Capital ManagementSell-14,7372,269,414$800,830,660
Q4 2025Cantillon Capital ManagementBuy9,2771,243,018$438,636,192
Q4 2025Sequoia Financial AdvisorsBuy2,04315,202$5,364,360
Q4 2025Jensen Investment ManagementBuy50310,603$3,741,587
Q3 2025Dodge & Cox Stock FundBuy3,464,6833,464,683$1,235,436,664
Q3 2025Viking Global InvestorsBuy694,2541,414,618$504,424,486
Q3 2025Polen Capital ManagementSell-255,4602,490,167$887,943,817
Q3 2025Cantillon Capital ManagementSell-13,6131,233,741$439,927,366
Q3 2025Jensen Investment ManagementBuy30010,100$3,601,458
Q3 2025Sequoia Financial AdvisorsSell-14513,159$4,692,087
Q3 2025Eagle Capital ManagementSell-1082,284,151$814,482,459
Q2 2025Eagle Capital ManagementSell-339,2302,284,259$814,932,312
Q2 2025Polen Capital ManagementSell-262,0922,745,627$979,529,926
Q2 2025Cantillon Capital ManagementSell-36,1941,247,354$445,006,013
Q2 2025Yacktman Asset ManagementBuy1,24512,915$4,607,555

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.

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