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 2025
Institutional positions in Aon plc as of Mar 31, 2025. 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
- 1,275
- +99 vs. Q4 2024
- Shares held
- 193.6M
- +2.23M (+1.2%) vs. Q4 2024
- Total value
- $77.1B
- +$8.37B (+12.2%) vs. Q4 2024
- New holders
- 168
- 469 more added
- Sold out
- 69
- 398 more reduced
19 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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 2025
Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 19,778,451 | $7.89B | 0.14% | +258,699+1.3% | Added |
| BlackRock, Inc. | 15,099,285 | $6.03B | 0.13% | +340,424+2.3% | Added |
| Capital World Investors | 12,097,577 | $4.83B | 0.78% | +3200.0% | Added |
| Massachusetts Financial Services Co | 9,832,327 | $3.92B | 1.30% | −1,783,997−15.4% | Reduced |
| State Street Corp | 9,173,788 | $3.66B | 0.15% | +82,866+0.9% | Added |
| Morgan Stanley | 8,726,304 | $3.48B | 0.25% | +342,023+4.1% | Added |
| JPMorgan Chase & Co | 5,656,323 | $2.26B | 0.17% | +300,941+5.6% | Added |
| Geode Capital Management, LLC | 5,414,557 | $2.15B | 0.17% | +464,638+9.4% | Added |
| HPS Investment Partners, LLC | 4,339,759 | $1.73B | 99.01% | 00.0% | Unchanged |
| Berkshire Hathaway IncSuperinvestorBerkshire Hathaway | 4,100,000 | $1.64B | 0.63% | 00.0% | Unchanged |
| Mawer Investment Management Ltd. | 3,273,574 | $1.31B | 6.31% | −629,153−16.1% | Reduced |
| Bank of New York Mellon Corp | 3,034,062 | $1.21B | 0.24% | +469,238+18.3% | Added |
| Polen Capital Management LLC | 3,007,719 | $1.20B | 3.77% | +2,288,397+318.1% | Added |
| Eagle Capital Management LLC | 2,623,489 | $1.05B | 3.82% | −1,360,067−34.1% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 2,390,571 | $954.1M | 0.88% | +61,350+2.6% | Added |
| Northern Trust Corp | 2,290,619 | $914.2M | 0.14% | +131,676+6.1% | Added |
| Lazard Asset Management LLC | 2,240,955 | $894.3M | 1.37% | −96,219−4.1% | Reduced |
| Neuberger Berman Group LLC | 2,136,107 | $852.5M | 0.71% | +12,245+0.6% | Added |
| Artisan Partners Limited Partnership | 2,135,832 | $852.4M | 1.38% | +68,281+3.3% | Added |
| Boston Partners | 2,121,607 | $844.5M | 1.02% | +85,609+4.2% | Added |
| WCM Investment Management, LLC | 2,051,816 | $809.5M | 2.08% | +6,038+0.3% | Added |
| Bank of America Corp | 1,869,779 | $746.2M | 0.07% | +263,358+16.4% | Added |
| Veritas Asset Management LLP | 1,839,697 | $734.2M | 7.42% | −380,951−17.2% | Reduced |
| Capital International Investors | 1,681,579 | $670.8M | 0.13% | −242,853−12.6% | Reduced |
| Norges Bank | 1,665,948 | $664.9M | 0.09% | +4,668+0.3% | Added |
| Sustainable Growth Advisers, LP | 1,592,962 | $635.7M | 3.55% | −670,821−29.6% | Reduced |
| Independent Franchise Partners LLP | 1,583,221 | $631.8M | 4.51% | −433,751−21.5% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 1,470,020 | $586.7M | 0.68% | −18,034−1.2% | Reduced |
| Longview Partners (Guernsey) LTD | 1,381,341 | $551.3M | 4.44% | −86,790−5.9% | Reduced |
| UBS Asset Management Americas Inc | 1,370,523 | $547.0M | 0.14% | +96,573+7.6% | Added |
| Mackenzie Financial Corp | 1,336,295 | $533.3M | 0.76% | −162,458−10.8% | Reduced |
| Legal & General Group Plc | 1,321,194 | $527.3M | 0.14% | −58,594−4.2% | Reduced |
| UBS Group AG | 1,305,499 | $521.0M | 0.12% | +415,929+46.8% | Added |
| Cantillon Capital Management LLC | 1,283,548 | $512.3M | 3.32% | −39,680−3.0% | Reduced |
| Nuveen, LLC | 1,265,651 | $505.1M | 0.16% | +1,265,651 | New |
| Charles Schwab Investment Management Inc | 1,253,997 | $500.5M | 0.09% | +16,213+1.3% | Added |
| Wellington Management Group LLP | 1,229,382 | $490.6M | 0.09% | +1,229,382 | New |
| Diamond Hill Capital Management Inc | 1,212,599 | $483.9M | 2.22% | −35,137−2.8% | Reduced |
| Invesco Ltd. | 1,158,139 | $462.2M | 0.09% | +137,118+13.4% | Added |
| Goldman Sachs Group Inc | 1,124,300 | $448.7M | 0.09% | +3,901+0.3% | Added |
| FIL Ltd | 1,074,205 | $428.7M | 0.41% | −86,260−7.4% | Reduced |
| Farallon Capital Management, L.L.C. | 1,361,744 | $378.3M | 2.04% | −470,989−25.7% | Reduced |
| Ameriprise Financial Inc | 925,721 | $369.4M | 0.10% | +1,655+0.2% | Added |
| FMR LLC | 912,181 | $364.0M | 0.02% | +9,989+1.1% | Added |
| Barclays PLC | 878,929 | $350.8M | 0.16% | +332,385+60.8% | Added |
| California Public Employees Retirement System | 830,012 | $331.2M | 0.23% | −24,794−2.9% | Reduced |
| Amundi | 831,877 | $328.0M | 0.12% | +88,212+11.9% | Added |
| Dimensional Fund Advisors LP | 812,713 | $324.3M | 0.08% | +75,797+10.3% | Added |
| Voya Investment Management LLC | 744,241 | $297.0M | 0.33% | +140,505+23.3% | Added |
| C WorldWide Group Holding A/S | 728,758 | $290.8M | 3.61% | −15,946−2.1% | Reduced |
| First Pacific Advisors, LP | 680,012 | $271.4M | 4.35% | −48,481−6.7% | Reduced |
| Royal Bank of Canada | 671,679 | $268.1M | 0.06% | +109,594+19.5% | Added |
| Price T Rowe Associates Inc | 661,596 | $264.0M | 0.03% | −46,127−6.5% | Reduced |
| USS Investment Management Ltd | 640,299 | $255.5M | 1.94% | −3,600−0.6% | Reduced |
| Omers Administration Corp | 601,417 | $240.0M | 2.10% | −1,189−0.2% | Reduced |
| Blair William & Co | 554,750 | $221.4M | 0.67% | −9,497−1.7% | Reduced |
| Swiss National Bank | 549,000 | $219.1M | 0.15% | −3,300−0.6% | Reduced |
| First Trust Advisors LP | 517,371 | $206.5M | 0.18% | −18,803−3.5% | Reduced |
| Assenagon Asset Management S.A. | 493,694 | $197.0M | 0.35% | +331,888+205.1% | Added |
| Deutsche Bank AG | 470,695 | $187.8M | 0.07% | +25,438+5.7% | Added |
| Envestnet Asset Management Inc | 461,160 | $184.0M | 0.06% | +92,600+25.1% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 453,955 | $181.2M | 0.13% | −419−0.1% | Reduced |
| Fiera Capital Corp | 453,395 | $180.9M | 0.65% | −43,899−8.8% | Reduced |
| Balyasny Asset Management LLC | 428,842 | $171.1M | 0.43% | −36,239−7.8% | Reduced |
| Millennium Management LLC | 425,678 | $169.9M | 0.16% | +359,249+540.8% | Added |
| Fiducient Advisors LLC | 424,865 | $169.6M | 21.19% | +73,428+20.9% | Added |
| SEI Investments Co | 419,101 | $167.3M | 0.22% | +118,419+39.4% | Added |
| Wells Fargo & Company | 402,731 | $160.7M | 0.04% | +118,456+41.7% | Added |
| Haverford Trust Co | 386,749 | $154.3M | 1.55% | +46,531+13.7% | Added |
| Rhumbline Advisers | 377,368 | $150.6M | 0.14% | +8,578+2.3% | Added |
| Bank of Montreal | 370,191 | $147.7M | 0.08% | +6,708+1.8% | Added |
| BNP Paribas Arbitrage, SA | 368,291 | $147.0M | 0.11% | +68,975+23.0% | Added |
| Douglass Winthrop Advisors, LLC | 367,700 | $146.7M | 2.79% | −4,343−1.2% | Reduced |
| National Pension Service | 349,161 | $139.3M | 0.13% | +13,912+4.1% | Added |
| Woodline Partners LP | 336,515 | $134.3M | 0.87% | +95,758+39.8% | Added |
| Kovitz Investment Group Partners, LLC | 327,323 | $130.6M | 0.66% | +24,410+8.1% | Added |
| New York State Common Retirement Fund | 319,778 | $127.6M | 0.19% | +38,277+13.6% | Added |
| California State Teachers Retirement System | 309,812 | $123.6M | 0.15% | −4,482−1.4% | Reduced |
| BloombergSen Inc. | 289,525 | $115.5M | 9.98% | −5,081−1.7% | Reduced |
| Russell Investments Group, Ltd. | 288,306 | $115.0M | 0.16% | +34,821+13.7% | Added |
| Wealthspire Advisors, LLC | 288,132 | $115.0M | 0.69% | −8,730−2.9% | Reduced |
| Natixis Advisors, L.P. | 286,512 | $114.3M | 0.21% | +6,348+2.3% | Added |
| T. Rowe Price Investment Management, Inc. | 284,411 | $113.5M | 0.08% | +284,411 | New |
| Citadel Advisors LLC | 282,699 | $112.8M | 0.11% | +255,699+947.0% | Added |
| Davenport & Co LLC | 276,133 | $109.9M | 0.65% | −2,000−0.7% | Reduced |
| Raymond James Financial Inc | 272,072 | $108.6M | 0.04% | +31,413+13.1% | Added |
| DekaBank Deutsche Girozentrale | 275,109 | $107.6M | 0.21% | −335−0.1% | Reduced |
| Principal Financial Group Inc | 265,462 | $105.9M | 0.06% | −1,912−0.7% | Reduced |
| Ensign Peak Advisors, Inc | 259,518 | $103.6M | 0.20% | +58,513+29.1% | Added |
| Prana Capital Management, LP | 252,614 | $100.8M | 4.10% | +121,451+92.6% | Added |
| Aviva PLC | 249,652 | $99.6M | 0.24% | −6,108−2.4% | Reduced |
| Verition Fund Management LLC | 244,073 | $97.4M | 0.56% | −25,195−9.4% | Reduced |
| Lord, Abbett & Co. LLC | 242,715 | $96.9M | 0.35% | +3,564+1.5% | Added |
| Citigroup Inc | 236,517 | $94.4M | 0.07% | +107,714+83.6% | Added |
| Altrinsic Global Advisors LLC | 236,234 | $94.3M | 4.65% | −1,137−0.5% | Reduced |
| Bowie Capital Management, LLC | 231,871 | $92.5M | 4.69% | −39,121−14.4% | Reduced |
| Scharf Investments, LLC | 230,457 | $92.0M | 2.78% | −5,866−2.5% | Reduced |
| Qube Research & Technologies Ltd | 225,262 | $89.9M | 0.14% | +171,883+322.0% | Added |
| Alliancebernstein L.P. | 216,149 | $86.3M | 0.03% | −492−0.2% | Reduced |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 213,450 | $85.2M | 4.53% | −47,500−18.2% | Reduced |