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
- 1,265
- −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 | 1,265 | $60.6B |
| Q4 2025 | 1,288 | $66.7B |
| Q3 2025 | 1,254 | $66.3B |
| Q2 2025 | 1,232 | $69.3B |
| Q1 2025 | 1,275 | $77.1B |
| Q4 2024 | 1,195 | $69.1B |
| Q3 2024 | 1,148 | $66.1B |
| Q2 2024 | 1,110 | $55.4B |
| Q1 2024 | 1,086 | $57.4B |
| Q4 2023 | 1,066 | $49.8B |
| Q3 2023 | 1,048 | $56.4B |
| Q2 2023 | 1,024 | $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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 16,148,507 | $5.21B | 0.09% | −88,427−0.5% | Reduced |
| Vanguard Capital Management LLC | 13,581,756 | $4.38B | 0.11% | +13,581,756 | New |
| Capital World Investors | 11,477,788 | $3.70B | 0.51% | −775,116−6.3% | Reduced |
| State Street Corp | 9,219,773 | $2.98B | 0.10% | +15,800+0.2% | Added |
| Massachusetts Financial Services Co | 8,358,097 | $2.75B | 0.93% | −186,939−2.2% | Reduced |
| Dodge & Cox | 8,116,095 | $2.62B | 1.44% | +263,639+3.4% | Added |
| Morgan Stanley | 6,374,945 | $2.06B | 0.12% | +804,439+14.4% | Added |
| JPMorgan Chase & Co | 5,641,431 | $1.83B | 0.12% | +2,449,215+76.7% | Added |
| Geode Capital Management, LLC | 5,244,309 | $1.69B | 0.10% | +102,946+2.0% | Added |
| Vanguard Portfolio Management LLC | 4,559,035 | $1.47B | 0.08% | +4,559,035 | New |
| Bank of New York Mellon Corp | 3,321,092 | $1.07B | 0.20% | −157,969−4.5% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 2,948,410 | $951.7M | 0.87% | +533,404+22.1% | Added |
| Independent Franchise Partners LLP | 2,588,002 | $835.4M | 5.85% | +472,479+22.3% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 2,516,637 | $812.3M | 0.55% | +703,749+38.8% | Added |
| Farallon Capital Management, L.L.C. | 2,512,638 | $811.0M | 4.81% | −152,600−5.7% | Reduced |
| Northern Trust Corp | 2,082,105 | $672.1M | 0.09% | −17,547−0.8% | Reduced |
| WCM Investment Management, LLC | 1,952,379 | $632.7M | 1.44% | −33,749−1.7% | Reduced |
| Boston Partners | 1,955,032 | $631.1M | 0.66% | +320,025+19.6% | Added |
| Neuberger Berman Group LLC | 1,857,834 | $599.7M | 0.46% | +53,531+3.0% | Added |
| Artisan Partners Limited Partnership | 1,644,152 | $530.7M | 0.87% | +526,724+47.1% | Added |
| Goldman Sachs Group Inc | 1,583,991 | $511.3M | 0.07% | +174,194+12.4% | Added |
| Bank of America Corp | 1,582,680 | $510.9M | 0.04% | +222,092+16.3% | Added |
| Veritas Asset Management LLP | 1,520,277 | $490.7M | 8.31% | −472,176−23.7% | Reduced |
| Amundi | 1,502,890 | $485.1M | 0.13% | +285,549+23.5% | Added |
| Diamond Hill Capital Management Inc | 1,487,887 | $480.3M | 3.00% | −108,428−6.8% | Reduced |
| Invesco Ltd. | 1,486,623 | $479.9M | 0.05% | +150,494+11.3% | Added |
| Charles Schwab Investment Management Inc | 1,355,094 | $437.4M | 0.07% | +44,354+3.4% | Added |
| Polen Capital Management LLC | 1,354,053 | $437.1M | 3.02% | −492,241−26.7% | Reduced |
| Legal & General Group Plc | 1,341,222 | $432.9M | 0.10% | −8,847−0.7% | Reduced |
| Price T Rowe Associates Inc | 1,280,926 | $413.5M | 0.05% | +702,535+121.5% | Added |
| Mawer Investment Management Ltd. | 1,277,088 | $412.2M | 2.67% | −200,605−13.6% | Reduced |
| UBS Asset Management Americas Inc | 1,262,123 | $407.4M | 0.08% | +22,815+1.8% | Added |
| Dimensional Fund Advisors LP | 1,253,769 | $404.7M | 0.08% | +213,051+20.5% | Added |
| Vanguard Fiduciary Trust Co | 1,225,563 | $395.6M | 0.10% | +1,225,563 | New |
| Lazard Asset Management LLC | 1,217,243 | $392.9M | 0.65% | −68,829−5.4% | Reduced |
| Cantillon Capital Management LLC | 1,095,574 | $353.6M | 2.35% | −147,444−11.9% | Reduced |
| Viking Global Investors LPSuperinvestorViking Global Investors | 1,087,114 | $350.9M | 0.98% | +303,464+38.7% | Added |
| Ameriprise Financial Inc | 1,080,672 | $348.8M | 0.08% | −27,542−2.5% | Reduced |
| Sustainable Growth Advisers, LP | 1,051,805 | $339.5M | 3.20% | −169,662−13.9% | Reduced |
| Vontobel Holding Ltd. | 999,176 | $322.5M | 1.11% | +239,037+31.4% | Added |
| Wealthspire Advisors, LLC | 984,075 | $317.6M | 2.49% | +710,479+259.7% | Added |
| AQR Capital Management LLC | 979,755 | $316.2M | 0.14% | +549,582+127.8% | Added |
| Longview Partners (Guernsey) LTD | 976,263 | $315.1M | 4.46% | −129,521−11.7% | Reduced |
| UBS Group AG | 903,928 | $291.8M | 0.05% | +83,811+10.2% | Added |
| Nuveen, LLC | 851,081 | $274.7M | 0.07% | +42,898+5.3% | Added |
| Capital International Investors | 807,075 | $260.6M | 0.06% | −448,690−35.7% | Reduced |
| Arrowstreet Capital, Limited Partnership | 797,418 | $257.4M | 0.14% | +340,866+74.7% | Added |
| Baupost Group LLCSuperinvestorBaupost Group | 769,000 | $248.2M | 4.85% | +769,000 | New |
| FIL Ltd | 745,959 | $240.8M | 0.19% | −137,798−15.6% | Reduced |
| First Pacific Advisors, LP | 703,258 | $227.0M | 3.18% | +46,727+7.1% | Added |
| Royal Bank of Canada | 688,130 | $222.1M | 0.04% | −266,618−27.9% | Reduced |
| Meritage Group LP | 680,169 | $219.5M | 8.28% | +680,169 | New |
| Altrinsic Global Advisors LLC | 660,724 | $213.3M | 7.64% | +9,517+1.5% | Added |
| Deutsche Bank AG | 644,736 | $208.1M | 0.07% | −150,894−19.0% | Reduced |
| Colony Group, LLC | 630,805 | $203.6M | 0.23% | +84,601+15.5% | Added |
| Comgest Global Investors S.A.S. | 628,700 | $202.9M | 4.42% | +371,900+144.8% | Added |
| Barclays PLC | 600,554 | $193.8M | 0.07% | +12,010+2.0% | Added |
| Swiss National Bank | 599,260 | $193.4M | 0.11% | +37,920+6.8% | Added |
| Omers Administration Corp | 567,479 | $183.2M | 1.18% | 00.0% | Unchanged |
| Fiera Capital Corp | 550,287 | $177.6M | 0.61% | +16,705+3.1% | Added |
| Manufacturers Life Insurance Company, The | 547,850 | $176.8M | 0.15% | +315,817+136.1% | Added |
| FMR LLC | 523,184 | $168.9M | 0.01% | −817,980−61.0% | Reduced |
| USS Investment Management Ltd | 502,480 | $162.2M | 0.69% | −179,263−26.3% | Reduced |
| Southpoint Capital Advisors LP | 500,000 | $161.4M | 3.32% | −150,000−23.1% | Reduced |
| California Public Employees Retirement System | 475,942 | $153.6M | 0.09% | −132,271−21.7% | Reduced |
| National Pension Service | 475,543 | $153.5M | 0.12% | +3,043+0.6% | Added |
| Vanguard Global Advisers, LLC | 469,130 | $151.4M | 0.08% | +469,130 | New |
| Eagle Capital Management LLC | 463,350 | $149.6M | 0.50% | −1,806,064−79.6% | Reduced |
| SEI Investments Co | 451,925 | $145.9M | 0.13% | −9,875−2.1% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 447,301 | $144.4M | 0.09% | −23,601−5.0% | Reduced |
| Envestnet Asset Management Inc | 423,209 | $136.6M | 0.04% | +78,897+22.9% | Added |
| Blair William & Co | 421,605 | $136.1M | 0.39% | −74,702−15.1% | Reduced |
| C WorldWide Group Holding A/S | 399,312 | $128.9M | 2.77% | −32,868−7.6% | Reduced |
| Douglass Winthrop Advisors, LLC | 394,536 | $127.3M | 2.33% | +1,921+0.5% | Added |
| Rhumbline Advisers | 380,644 | $122.9M | 0.11% | −3,179−0.8% | Reduced |
| BNP Paribas Arbitrage, SA | 368,360 | $118.9M | 0.08% | −53,704−12.7% | Reduced |
| Wells Fargo & Company | 365,706 | $118.0M | 0.02% | +25,657+7.5% | Added |
| Vanguard Asset Management, Ltd | 361,858 | $116.8M | 0.10% | +361,858 | New |
| Franklin Resources Inc | 361,315 | $116.6M | 0.03% | +71,051+24.5% | Added |
| HSBC Holdings PLC | 354,158 | $114.4M | 0.07% | +163,479+85.7% | Added |
| Haverford Trust Co | 346,117 | $111.7M | 1.02% | −5,051−1.4% | Reduced |
| Natixis Advisors, L.P. | 341,937 | $110.4M | 0.15% | +7,426+2.2% | Added |
| Davenport & Co LLC | 337,041 | $108.9M | 0.60% | +67,681+25.1% | Added |
| Prana Capital Management, LP | 323,458 | $104.4M | 3.20% | +167,301+107.1% | Added |
| Bowie Capital Management, LLC | 322,167 | $104.0M | 4.92% | −21,982−6.4% | Reduced |
| Cryder Capital Partners LLP | 321,689 | $103.8M | 6.78% | +26,538+9.0% | Added |
| Aviva PLC | 310,335 | $100.2M | 0.17% | −23,119−6.9% | Reduced |
| California State Teachers Retirement System | 308,973 | $99.7M | 0.11% | −9,368−2.9% | Reduced |
| Lord, Abbett & Co. LLC | 298,530 | $96.4M | 0.31% | +26,484+9.7% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 291,337 | $94.1M | 0.11% | +238,672+453.2% | Added |
| Bank of Montreal | 288,235 | $93.0M | 0.04% | −27,737−8.8% | Reduced |
| Bristol John W & Co Inc | 283,054 | $91.4M | 1.50% | −3,074−1.1% | Reduced |
| DekaBank Deutsche Girozentrale | 275,444 | $90.4M | 0.15% | 00.0% | Unchanged |
| CapitalatWork S.A. | 272,003 | $87.8M | 2.61% | +74,149+37.5% | Added |
| Canada Pension Plan Investment Board | 269,059 | $86.8M | 0.06% | +246,712+1,104.0% | Added |
| Russell Investments Group, Ltd. | 262,916 | $84.9M | 0.09% | −43,582−14.2% | Reduced |
| Scharf Investments, LLC | 254,941 | $82.3M | 2.54% | +46,830+22.5% | Added |
| BloombergSen Inc. | 254,006 | $82.0M | 9.18% | −8,744−3.3% | Reduced |
| Jones Financial Companies LLLP | 259,033 | $81.3M | 0.04% | +253,762+4,814.3% | Added |
| Principal Financial Group Inc | 250,925 | $81.0M | 0.04% | +2,444+1.0% | Added |