Aon plc
AON- Exchange
- NYSE
- Industry
- Insurance Agents, Brokers & Service
- SEC CIK
- 0000315293
In the last 90 days, Aon plc insiders filed 1 open-market purchase and 3 sales; 1,273 institutions reported holding it in 13F filings for Q2 2026, worth $63.9B in total; 4 superinvestors hold it, including Viking Global Investors and Baupost Group.
13F holders, Q1 2026
Institutional positions in Aon plc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 1,266
- −3 vs. Q4 2025
- Shares held
- 187.6M
- +22.2M (+13.4%) vs. Q4 2025
- Total value
- $60.6B
- +$2.27B (+3.9%) vs. Q4 2025
- New holders
- 142
- 485 more added
- Sold out
- 145
- 417 more reduced
20 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AON on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,273 | $63.9B |
| Q1 2026 | 1,266 | $60.6B |
| Q4 2025 | 1,289 | $66.7B |
| Q3 2025 | 1,255 | $66.3B |
| Q2 2025 | 1,233 | $69.3B |
| Q1 2025 | 1,276 | $77.1B |
| Q4 2024 | 1,196 | $69.1B |
| Q3 2024 | 1,149 | $66.1B |
| Q2 2024 | 1,111 | $55.4B |
| Q1 2024 | 1,087 | $57.4B |
| Q4 2023 | 1,067 | $49.8B |
| Q3 2023 | 1,049 | $56.4B |
| Q2 2023 | 1,025 | $61.2B |
| Q1 2023 | 1,014 | $55.7B |
| Q4 2022 | 1,034 | $52.6B |
| Q3 2022 | 950 | $48.4B |
| Q2 2022 | 966 | $49.5B |
| Q1 2022 | 985 | $61.2B |
| Q4 2021 | 995 | $56.5B |
| Q3 2021 | 917 | $57.2B |
| Q2 2021 | 912 | $53.4B |
| Q1 2021 | 919 | $51.4B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| National Pension Service | 475,543 | $153.5M | 0.12% | +3,043+0.6% | Added |
| California Public Employees Retirement System | 475,942 | $153.6M | 0.09% | −132,271−21.7% | Reduced |
| Southpoint Capital Advisors LP | 500,000 | $161.4M | 3.32% | −150,000−23.1% | Reduced |
| USS Investment Management Ltd | 502,480 | $162.2M | 0.69% | −179,263−26.3% | Reduced |
| FMR LLC | 523,184 | $168.9M | 0.01% | −817,980−61.0% | Reduced |
| Manufacturers Life Insurance Company, The | 547,850 | $176.8M | 0.15% | +315,817+136.1% | Added |
| Fiera Capital Corp | 550,287 | $177.6M | 0.61% | +16,705+3.1% | Added |
| Omers Administration Corp | 567,479 | $183.2M | 1.18% | 00.0% | Unchanged |
| Swiss National Bank | 599,260 | $193.4M | 0.11% | +37,920+6.8% | Added |
| Barclays PLC | 600,554 | $193.8M | 0.07% | +12,010+2.0% | Added |
| Comgest Global Investors S.A.S. | 628,700 | $202.9M | 4.42% | +371,900+144.8% | Added |
| Colony Group, LLC | 630,805 | $203.6M | 0.23% | +84,601+15.5% | Added |
| Deutsche Bank AG | 644,736 | $208.1M | 0.07% | −150,894−19.0% | Reduced |
| Altrinsic Global Advisors LLC | 660,724 | $213.3M | 7.64% | +9,517+1.5% | Added |
| Meritage Group LP | 680,169 | $219.5M | 8.28% | +680,169 | New |
| Royal Bank of Canada | 688,130 | $222.1M | 0.04% | −266,618−27.9% | Reduced |
| First Pacific Advisors, LP | 703,258 | $227.0M | 3.18% | +46,727+7.1% | Added |
| FIL Ltd | 745,959 | $240.8M | 0.19% | −137,798−15.6% | Reduced |
| Baupost Group LLCSuperinvestorBaupost Group | 769,000 | $248.2M | 4.85% | +769,000 | New |
| Arrowstreet Capital, Limited Partnership | 797,418 | $257.4M | 0.14% | +340,866+74.7% | Added |
| Capital International Investors | 807,075 | $260.6M | 0.06% | −448,690−35.7% | Reduced |
| Nuveen, LLC | 851,081 | $274.7M | 0.07% | +42,898+5.3% | Added |
| UBS Group AG | 903,928 | $291.8M | 0.05% | +83,811+10.2% | Added |
| Longview Partners (Guernsey) LTD | 976,263 | $315.1M | 4.46% | −129,521−11.7% | Reduced |
| AQR Capital Management LLC | 979,755 | $316.2M | 0.14% | +549,582+127.8% | Added |
| Wealthspire Advisors, LLC | 984,075 | $317.6M | 2.49% | +710,479+259.7% | Added |
| Vontobel Holding Ltd. | 999,176 | $322.5M | 1.11% | +239,037+31.4% | Added |
| Sustainable Growth Advisers, LP | 1,051,805 | $339.5M | 3.20% | −169,662−13.9% | Reduced |
| Ameriprise Financial Inc | 1,080,672 | $348.8M | 0.08% | −27,542−2.5% | Reduced |
| Viking Global Investors LPSuperinvestorViking Global Investors | 1,087,114 | $350.9M | 0.98% | +303,464+38.7% | Added |
| Cantillon Capital Management LLC | 1,095,574 | $353.6M | 2.35% | −147,444−11.9% | Reduced |
| Lazard Asset Management LLC | 1,217,243 | $392.9M | 0.65% | −68,829−5.4% | Reduced |
| Vanguard Fiduciary Trust Co | 1,225,563 | $395.6M | 0.10% | +1,225,563 | New |
| Dimensional Fund Advisors LP | 1,253,769 | $404.7M | 0.08% | +213,051+20.5% | Added |
| UBS Asset Management Americas Inc | 1,262,123 | $407.4M | 0.08% | +22,815+1.8% | Added |
| Mawer Investment Management Ltd. | 1,277,088 | $412.2M | 2.67% | −200,605−13.6% | Reduced |
| Price T Rowe Associates Inc | 1,280,926 | $413.5M | 0.05% | +702,535+121.5% | Added |
| Legal & General Group Plc | 1,341,222 | $432.9M | 0.10% | −8,847−0.7% | Reduced |
| Polen Capital Management LLC | 1,354,053 | $437.1M | 3.02% | −492,241−26.7% | Reduced |
| Charles Schwab Investment Management Inc | 1,355,094 | $437.4M | 0.07% | +44,354+3.4% | Added |
| Invesco Ltd. | 1,486,623 | $479.9M | 0.05% | +150,494+11.3% | Added |
| Diamond Hill Capital Management Inc | 1,487,887 | $480.3M | 3.00% | −108,428−6.8% | Reduced |
| Amundi | 1,502,890 | $485.1M | 0.13% | +285,549+23.5% | Added |
| Veritas Asset Management LLP | 1,520,277 | $490.7M | 8.31% | −472,176−23.7% | Reduced |
| Bank of America Corp | 1,582,680 | $510.9M | 0.04% | +222,092+16.3% | Added |
| Goldman Sachs Group Inc | 1,583,991 | $511.3M | 0.07% | +174,194+12.4% | Added |
| Artisan Partners Limited Partnership | 1,644,152 | $530.7M | 0.87% | +526,724+47.1% | Added |
| Neuberger Berman Group LLC | 1,857,834 | $599.7M | 0.46% | +53,531+3.0% | Added |
| Boston Partners | 1,955,032 | $631.1M | 0.66% | +320,025+19.6% | Added |
| WCM Investment Management, LLC | 1,952,379 | $632.7M | 1.44% | −33,749−1.7% | Reduced |
| Northern Trust Corp | 2,082,105 | $672.1M | 0.09% | −17,547−0.8% | Reduced |
| Farallon Capital Management, L.L.C. | 2,512,638 | $811.0M | 4.81% | −152,600−5.7% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 2,516,637 | $812.3M | 0.55% | +703,749+38.8% | Added |
| Independent Franchise Partners LLP | 2,588,002 | $835.4M | 5.85% | +472,479+22.3% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 2,948,410 | $951.7M | 0.87% | +533,404+22.1% | Added |
| Bank of New York Mellon Corp | 3,321,092 | $1.07B | 0.20% | −157,969−4.5% | Reduced |
| Vanguard Portfolio Management LLC | 4,559,035 | $1.47B | 0.08% | +4,559,035 | New |
| Geode Capital Management, LLC | 5,244,309 | $1.69B | 0.10% | +102,946+2.0% | Added |
| JPMorgan Chase & Co | 5,641,431 | $1.83B | 0.12% | +2,449,215+76.7% | Added |
| Morgan Stanley | 6,374,945 | $2.06B | 0.12% | +804,439+14.4% | Added |
| Dodge & Cox | 8,116,095 | $2.62B | 1.44% | +263,639+3.4% | Added |
| Massachusetts Financial Services Co | 8,358,097 | $2.75B | 0.93% | −186,939−2.2% | Reduced |
| State Street Corp | 9,219,773 | $2.98B | 0.10% | +15,800+0.2% | Added |
| Capital World Investors | 11,477,788 | $3.70B | 0.51% | −775,116−6.3% | Reduced |
| Vanguard Capital Management LLC | 13,581,756 | $4.38B | 0.11% | +13,581,756 | New |
| BlackRock, Inc. | 16,148,507 | $5.21B | 0.09% | −88,427−0.5% | Reduced |
| Berkshire Hathaway IncSuperinvestorBerkshire Hathaway | 0 | $0 | 0.00% | −3,602,995−100.0% | Sold out |
| Moore Capital Management, LP | 0 | $0 | 0.00% | −139,600−100.0% | Sold out |
| Financiere des Professionnels - Fonds d,investissement inc. | 0 | $0 | 0.00% | −63,703−100.0% | Sold out |
| Caisse de Depot Et Placement du Quebec | 0 | $0 | 0.00% | −51,114−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −35,374−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −32,508−100.0% | Sold out |
| Cercano Management LLC | 0 | $0 | 0.00% | −30,352−100.0% | Sold out |
| Cornerstone Advisors, LLC | 0 | $0 | 0.00% | −25,800−100.0% | Sold out |
| Swiss Life Asset Management Ltd | 0 | $0 | 0.00% | −24,203−100.0% | Sold out |
| Intermede Investment Partners Ltd | 0 | $0 | 0.00% | −23,160−100.0% | Sold out |
| Dockside LLC | 0 | $0 | 0.00% | −17,873−100.0% | Sold out |
| Regency Capital Management Inc. | 0 | $0 | 0.00% | −12,201−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −10,041−100.0% | Sold out |
| Shufro Rose & Co LLC | 0 | $0 | 0.00% | – | Sold out |
| Cumberland Partners Ltd | 0 | $0 | 0.00% | −9,730−100.0% | Sold out |
| Axxcess Wealth Management, LLC | 0 | $0 | 0.00% | −6,580−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −6,526−100.0% | Sold out |
| WBI Investments | 0 | $0 | 0.00% | −6,108−100.0% | Sold out |
| Virtus Investment Advisers, Inc. | 0 | $0 | 0.00% | −5,780−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −5,666−100.0% | Sold out |
| Fischer Financial Services, Inc. | 0 | $0 | 0.00% | −4,963−100.0% | Sold out |
| Fiduciary Alliance LLC | 0 | $0 | 0.00% | −4,612−100.0% | Sold out |
| Oak Thistle LLC | 0 | $0 | 0.00% | −4,580−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −4,576−100.0% | Sold out |
| Logan Capital Management Inc | 0 | $0 | 0.00% | −4,078−100.0% | Sold out |
| Stance Capital LLC | 0 | $0 | 0.00% | −4,015−100.0% | Sold out |
| Permanens Capital L.P. | 0 | $0 | 0.00% | −3,877−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −3,321−100.0% | Sold out |
| Ceredex Value Advisors LLC | 0 | $0 | 0.00% | −3,291−100.0% | Sold out |
| Alberta Investment Management Corp | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| First Financial Bankshares Inc | 0 | $0 | 0.00% | −2,978−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −2,694−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −2,556−100.0% | Sold out |
| Quantum Financial Advisors, LLC | 0 | $0 | 0.00% | −2,526−100.0% | Sold out |