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, Q4 2025
Institutional positions in Aon plc as of Dec 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
- 1,289
- +57 vs. Q3 2025
- Shares held
- 189.1M
- +3.31M (+1.8%) vs. Q3 2025
- Total value
- $66.7B
- +$447.9M (+0.7%) vs. Q3 2025
- New holders
- 156
- 425 more added
- Sold out
- 99
- 478 more reduced
23 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Lord, Abbett & Co. LLC | 272,046 | $96.0M | 0.29% | +22,878+9.2% | Added |
| Wealthspire Advisors, LLC | 273,596 | $96.5M | 0.77% | +42,739+18.5% | Added |
| Bristol John W & Co Inc | 286,128 | $101.0M | 1.55% | +41,384+16.9% | Added |
| Franklin Resources Inc | 290,264 | $102.4M | 0.03% | +212,037+271.1% | Added |
| Cryder Capital Partners LLP | 295,151 | $104.2M | 6.15% | +63,837+27.6% | Added |
| Russell Investments Group, Ltd. | 306,498 | $108.2M | 0.12% | +12,821+4.4% | Added |
| Bank of Montreal | 315,972 | $111.5M | 0.05% | −90,680−22.3% | Reduced |
| California State Teachers Retirement System | 318,341 | $112.3M | 0.11% | −7,233−2.2% | Reduced |
| Mackenzie Financial Corp | 328,701 | $116.9M | 0.14% | −132,567−28.7% | Reduced |
| Aviva PLC | 333,454 | $117.7M | 0.20% | +6,622+2.0% | Added |
| Natixis Advisors, L.P. | 334,511 | $118.0M | 0.17% | −21,315−6.0% | Reduced |
| Wells Fargo & Company | 340,049 | $120.0M | 0.02% | −31,819−8.6% | Reduced |
| Bowie Capital Management, LLC | 344,149 | $121.4M | 5.01% | −12,738−3.6% | Reduced |
| Envestnet Asset Management Inc | 344,312 | $121.5M | 0.04% | −69,179−16.7% | Reduced |
| Haverford Trust Co | 351,168 | $123.9M | 1.11% | −28,917−7.6% | Reduced |
| Rhumbline Advisers | 383,823 | $135.4M | 0.11% | −11,216−2.8% | Reduced |
| Balyasny Asset Management LLC | 387,013 | $136.6M | 0.26% | −459,702−54.3% | Reduced |
| Douglass Winthrop Advisors, LLC | 392,615 | $138.5M | 2.42% | −9,285−2.3% | Reduced |
| BNP Paribas Arbitrage, SA | 422,064 | $148.9M | 0.09% | +185,296+78.3% | Added |
| AQR Capital Management LLC | 430,173 | $151.8M | 0.08% | +315,785+276.1% | Added |
| C WorldWide Group Holding A/S | 432,180 | $152.5M | 2.66% | −85,128−16.5% | Reduced |
| Citadel Advisors LLC | 442,286 | $156.1M | 0.11% | −465,334−51.3% | Reduced |
| Arrowstreet Capital, Limited Partnership | 456,552 | $161.1M | 0.09% | +279,467+157.8% | Added |
| SEI Investments Co | 461,800 | $163.0M | 0.16% | +90,642+24.4% | Added |
| Voya Investment Management LLC | 466,216 | $164.5M | 0.16% | −94,537−16.9% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 470,902 | $166.2M | 0.10% | −17,135−3.5% | Reduced |
| National Pension Service | 472,500 | $166.7M | 0.12% | +52,077+12.4% | Added |
| Blair William & Co | 496,307 | $175.1M | 0.47% | −33,466−6.3% | Reduced |
| Fiera Capital Corp | 533,582 | $188.3M | 0.60% | −15,752−2.9% | Reduced |
| Colony Group, LLC | 546,204 | $192.8M | 0.22% | +436,093+396.0% | Added |
| Swiss National Bank | 561,340 | $198.1M | 0.12% | −29,960−5.1% | Reduced |
| Omers Administration Corp | 567,479 | $200.3M | 1.43% | −33,938−5.6% | Reduced |
| Price T Rowe Associates Inc | 578,391 | $204.1M | 0.02% | −35,748−5.8% | Reduced |
| Barclays PLC | 588,544 | $207.7M | 0.08% | −85,174−12.6% | Reduced |
| Adage Capital Partners GP, L.L.C. | 606,569 | $214.0M | 0.32% | −39,500−6.1% | Reduced |
| California Public Employees Retirement System | 608,213 | $214.6M | 0.12% | −99,750−14.1% | Reduced |
| Millennium Management LLC | 636,922 | $224.8M | 0.16% | +140,336+28.3% | Added |
| Southpoint Capital Advisors LP | 650,000 | $229.4M | 5.33% | +650,000 | New |
| Altrinsic Global Advisors LLC | 651,207 | $229.8M | 8.24% | −31,679−4.6% | Reduced |
| First Pacific Advisors, LP | 656,531 | $231.7M | 3.05% | +2,086+0.3% | Added |
| USS Investment Management Ltd | 681,743 | $240.6M | 1.20% | +40,969+6.4% | Added |
| Vontobel Holding Ltd. | 760,139 | $268.2M | 0.88% | −129,193−14.5% | Reduced |
| Viking Global Investors LPSuperinvestorViking Global Investors | 783,650 | $276.5M | 0.73% | −630,968−44.6% | Reduced |
| Deutsche Bank AG | 795,630 | $280.8M | 0.09% | +182,923+29.9% | Added |
| Nuveen, LLC | 808,183 | $285.2M | 0.07% | −240,461−22.9% | Reduced |
| UBS Group AG | 820,117 | $289.4M | 0.06% | −375,721−31.4% | Reduced |
| FIL Ltd | 883,757 | $311.9M | 0.23% | −44,456−4.8% | Reduced |
| Royal Bank of Canada | 954,748 | $336.9M | 0.06% | +8,915+0.9% | Added |
| Dimensional Fund Advisors LP | 1,040,718 | $367.3M | 0.08% | +96,885+10.3% | Added |
| Longview Partners (Guernsey) LTD | 1,105,784 | $390.2M | 4.07% | −50,970−4.4% | Reduced |
| Ameriprise Financial Inc | 1,108,214 | $391.1M | 0.09% | −73,530−6.2% | Reduced |
| Artisan Partners Limited Partnership | 1,117,428 | $394.3M | 0.60% | −149,342−11.8% | Reduced |
| Amundi | 1,217,341 | $429.6M | 0.12% | −165,796−12.0% | Reduced |
| Sustainable Growth Advisers, LP | 1,221,467 | $431.0M | 2.99% | −95,897−7.3% | Reduced |
| UBS Asset Management Americas Inc | 1,239,308 | $437.3M | 0.09% | −64,538−4.9% | Reduced |
| Cantillon Capital Management LLC | 1,243,018 | $438.6M | 2.37% | +9,277+0.8% | Added |
| Capital International Investors | 1,255,765 | $443.4M | 0.07% | −500,692−28.5% | Reduced |
| Lazard Asset Management LLC | 1,286,072 | $453.8M | 0.77% | +25,652+2.0% | Added |
| Charles Schwab Investment Management Inc | 1,310,740 | $462.5M | 0.07% | +15,619+1.2% | Added |
| Invesco Ltd. | 1,336,129 | $471.5M | 0.04% | +86,717+6.9% | Added |
| FMR LLC | 1,341,164 | $473.3M | 0.02% | +757,820+129.9% | Added |
| Legal & General Group Plc | 1,350,069 | $476.4M | 0.11% | −60,273−4.3% | Reduced |
| Bank of America Corp | 1,360,588 | $480.1M | 0.03% | −74,787−5.2% | Reduced |
| Goldman Sachs Group Inc | 1,409,797 | $497.5M | 0.07% | +98,103+7.5% | Added |
| Mawer Investment Management Ltd. | 1,477,693 | $521.4M | 2.92% | −1,020,396−40.8% | Reduced |
| Diamond Hill Capital Management Inc | 1,596,315 | $563.3M | 2.89% | +32,494+2.1% | Added |
| Boston Partners | 1,635,007 | $576.3M | 0.60% | −76,243−4.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 1,812,888 | $624.1M | 0.42% | −10,554−0.6% | Reduced |
| Neuberger Berman Group LLC | 1,804,303 | $636.7M | 0.47% | −526,060−22.6% | Reduced |
| Polen Capital Management LLC | 1,846,294 | $651.5M | 2.78% | −643,873−25.9% | Reduced |
| Veritas Asset Management LLP | 1,992,453 | $703.1M | 7.19% | −61,220−3.0% | Reduced |
| WCM Investment Management, LLC | 1,986,128 | $708.0M | 1.46% | −51,715−2.5% | Reduced |
| Northern Trust Corp | 2,099,652 | $740.9M | 0.09% | −113,417−5.1% | Reduced |
| Independent Franchise Partners LLP | 2,115,523 | $746.5M | 4.75% | +19,037+0.9% | Added |
| Eagle Capital Management LLC | 2,269,414 | $800.8M | 2.49% | −14,737−0.6% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 2,415,006 | $852.2M | 0.75% | +2,388,314+8,947.7% | Added |
| Farallon Capital Management, L.L.C. | 2,665,238 | $940.5M | 4.89% | +387,221+17.0% | Added |
| JPMorgan Chase & Co | 3,192,216 | $1.13B | 0.08% | −154,981−4.6% | Reduced |
| Norges Bank | 3,275,848 | $1.16B | 0.12% | +3,275,848 | New |
| Bank of New York Mellon Corp | 3,479,061 | $1.23B | 0.22% | −236,285−6.4% | Reduced |
| Berkshire Hathaway IncSuperinvestorBerkshire Hathaway | 3,602,995 | $1.27B | 0.46% | −497,005−12.1% | Reduced |
| Geode Capital Management, LLC | 5,141,363 | $1.81B | 0.11% | +28,066+0.5% | Added |
| Morgan Stanley | 5,570,506 | $1.97B | 0.12% | −565,880−9.2% | Reduced |
| Dodge & Cox | 7,852,456 | $2.77B | 1.50% | +4,387,773+126.6% | Added |
| Massachusetts Financial Services Co | 8,545,036 | $3.02B | 0.97% | −212,650−2.4% | Reduced |
| State Street Corp | 9,203,973 | $3.25B | 0.11% | −25,491−0.3% | Reduced |
| Capital World Investors | 12,252,904 | $4.32B | 0.59% | +176,207+1.5% | Added |
| BlackRock, Inc. | 16,236,934 | $5.73B | 0.10% | +390,348+2.5% | Added |
| Vanguard Group Inc | 20,171,049 | $7.12B | 0.10% | +191,658+1.0% | Added |
| Border to Coast Pensions Partnership Ltd | 0 | $0 | 0.00% | −102,557−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −70,956−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −43,478−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −33,686−100.0% | Sold out |
| Van Eck Associates Corp | 0 | $0 | 0.00% | −32,627−100.0% | Sold out |
| Aryeh Capital Management Ltd. | 0 | $0 | 0.00% | −32,300−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −31,872−100.0% | Sold out |
| New York Life Investment Management LLC | 0 | $0 | 0.00% | −29,246−100.0% | Sold out |
| Bridgewater Advisors Inc. | 0 | $0 | 0.00% | −21,841−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −20,483−100.0% | Sold out |
| Morningstar Investment Management LLC | 0 | $0 | 0.00% | −18,692−100.0% | Sold out |