Aon PLC Class AAON
13F holders, Q3 2025 (September 30)1,246holders +23
116new positions
85sold out
14famous investors
$356.54avg. 13F price*
At the end of Q3 2025, 1,246 institutions reported holding Aon PLC Class A (AON) in their 13F filings, up 23 from Q2 2025. 116 opened new positions and 85 sold out. The largest holders were Vanguard Group Inc. ($7.1B), BlackRock, Inc. ($5.7B) and Capital World Investors ($4.3B). 14 famous investors held it, including Andreas Halvorsen (1.3% of Viking Global Investors's portfolio), Warren Buffett (0.5% of Berkshire Hathaway's portfolio) and Tom Gayner (0.4% of Markel Group's portfolio).
- Company
- Aon PLC Class A
- Sector
- Finance
- CUSIP
- G0403H108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 116 | $2.4B |
| Exits | 85 | $424.8M |
All 13F filers, Q2 2025 → Q3 2025: 14,564,786 shares bought and 16,502,341 shares sold, net −1,937,555 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,246 holders
| Vanguard Group Inc. | 0.11% | Reduce -1.5% | 19,979,391 | $7.1B |
| BlackRock, Inc. | 0.10% | Reduce -0.5% | 15,846,586 | $5.7B |
| Capital World Investors | 0.59% | Reduce -0.6% | 12,076,697 | $4.3B |
| State Street Corp. | 0.11% | Add +1.1% | 9,229,464 | $3.3B |
| Massachusetts Financial Services Co. | 0.97% | Reduce -2.2% | 8,757,686 | $3.1B |
| Morgan Stanley | 0.13% | Reduce -35.2% | 6,136,386 | $2.2B |
| Geode Capital Management, LLC | 0.12% | Reduce -8.5% | 5,113,297 | $1.8B |
| Berkshire Hathaway | 0.55% | No change | 4,100,000 | $1.5B |
| Bank of New York Mellon Corp | 0.24% | Add +5.9% | 3,715,346 | $1.3B |
| Dodge & Cox | 0.67% | New | 3,464,683 | $1.2B |
| JPMorgan Chase & Co. | 0.08% | Reduce -28.8% | 3,347,197 | $1.2B |
| Mawer Investment Management Ltd. | 4.63% | Reduce -15.9% | 2,498,089 | $890.8M |
| Polen Capital Management LLC | 2.88% | Reduce -9.3% | 2,490,167 | $887.9M |
| Neuberger Berman Group LLC | 0.61% | Add +12.0% | 2,330,363 | $830.9M |
| Eagle Capital Management LLC | 2.59% | Reduce 0.0% | 2,284,151 | $814.5M |
| Farallon Capital Management, L.L.C. | 4.59% | Add +14.7% | 2,278,017 | $812.3M |
| Northern Trust Corp. | 0.10% | Reduce -2.5% | 2,213,069 | $789.1M |
| Independent Franchise Partners LLP | 4.93% | Add +41.6% | 2,096,486 | $747.6M |
| Veritas Asset Management LLP | 7.82% | Add +19.3% | 2,053,673 | $732.3M |
| WCM Investment Management, LLC | 1.50% | Reduce -0.1% | 2,037,843 | $722.7M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.47% | Reduce -32.6% | 1,823,442 | $650.2M |
| Capital International Investors | 0.10% | Add +3.1% | 1,756,457 | $626.2M |
| Boston Partners | 0.63% | Add +15.5% | 1,711,250 | $611.0M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 2.65% | Reduce -0.7% | 1,563,821 | $557.6M |
| Bank of America Corp. | 0.04% | Add +0.8% | 1,435,375 | $511.8M |
| Amundi | 0.16% | Add +39.8% | 1,383,137 | $505.8M |
| Viking Global Investors | 1.31% | New | 1,414,618 | $504.4M |
| Legal & General Group Plc | 0.11% | Add +7.9% | 1,410,342 | $502.9M |
| Sustainable Growth Advisers, LP | 2.75% | Reduce -28.7% | 1,317,364 | $469.7M |
| Goldman Sachs Group Inc. | 0.07% | Add +4.2% | 1,311,694 | $467.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.10% | Reduce -15.5% | 1,303,846 | $464.9M |
| Charles Schwab Investment Management Inc. | 0.07% | Add +0.9% | 1,295,121 | $461.8M |
| Artisan Partners Limited Partnership | 0.65% | Reduce -41.8% | 1,266,770 | $451.7M |
| Lazard Asset Management LLC | 0.61% | Reduce -30.9% | 1,260,420 | $449.4M |
| Invesco Ltd. | 0.07% | Add +0.1% | 1,249,412 | $445.5M |
| Cantillon Capital Management LLC | 2.42% | Reduce -1.1% | 1,233,741 | $439.9M |
| UBS Group AG | 0.08% | Reduce -2.0% | 1,195,838 | $426.4M |
| Ameriprise Financial Inc. | 0.10% | Add +11.4% | 1,181,744 | $421.4M |
| Longview Partners (Guernsey) LTD | 4.31% | Reduce -11.6% | 1,156,754 | $412.5M |
| Nuveen, LLC | 0.10% | Add +0.3% | 1,048,644 | $373.9M |
| Royal Bank of Canada | 0.06% | Add +45.5% | 945,833 | $337.3M |
| Dimensional Fund Advisors LP | 0.07% | Add +5.3% | 943,833 | $336.5M |
| FIL Ltd | 0.26% | Reduce -6.4% | 928,213 | $331.0M |
| Citadel Advisors | 0.26% | Add +601.0% | 907,620 | $323.6M |
| Vontobel Holding Ltd. | 1.00% | Add +92.9% | 889,332 | $317.1M |
| Balyasny Asset Management L.P. | 0.63% | New | 846,715 | $301.9M |
| California Public Employees Retirement System | 0.15% | Reduce -3.6% | 707,963 | $252.4M |
| Altrinsic Global Advisors LLC | 9.01% | Reduce -1.4% | 682,886 | $243.5M |
| Barclays PLC | 0.09% | Add +3.5% | 673,718 | $240.2M |
| First Pacific Advisors, LP | 3.27% | Add +0.4% | 654,445 | $233.4M |
| Adage Capital Partners Gp, L.L.C. | 0.36% | Add +113.7% | 646,069 | $230.4M |
| USS Investment Management Ltd | 1.10% | No change | 640,774 | $228.3M |
| T. Rowe Price Associates Inc. | 0.02% | Reduce -1.2% | 614,139 | $219.0M |
| Deutsche Bank AG | 0.07% | Add +49.3% | 612,707 | $218.5M |
| OMERS ADMINISTRATION Corp | 1.54% | No change | 601,417 | $214.5M |
| Swiss National Bank | 0.12% | Add +0.5% | 591,300 | $210.8M |
| FMR LLC | 0.01% | Reduce -60.0% | 583,344 | $208.0M |
| First Trust Advisors LP | 0.15% | Add +1.9% | 562,977 | $200.7M |
| Voya Investment Management LLC | 0.23% | Reduce -17.4% | 560,753 | $200.0M |
| Fiera Capital Corp | 0.63% | Add +5.3% | 549,334 | $195.9M |
| Blair William & Co. | 0.50% | Reduce -6.7% | 529,773 | $188.9M |
| C WorldWide Group Holding A/S | 2.84% | Reduce -16.6% | 517,308 | $184.5M |
| Millennium Management | 0.15% | Add +6871.6% | 496,586 | $177.1M |
| Sumitomo Mitsui Trust Group, Inc. | 0.10% | Add +5.2% | 488,037 | $174.0M |
| Mackenzie Financial Corp. | 0.20% | Reduce -32.5% | 461,268 | $164.5M |
| Wellington Management Group LLP | 0.03% | Reduce -60.0% | 445,208 | $158.8M |
| National Pension Service | 0.12% | Add +0.9% | 420,423 | $149.9M |
| Envestnet Asset Management Inc. | 0.04% | Reduce -3.5% | 413,491 | $147.4M |
| Bank of Montreal | 0.06% | Add +25.6% | 406,652 | $145.0M |
| Douglass Winthrop Advisors, LLC | 2.50% | Add +1.2% | 401,900 | $143.3M |
| Rhumbline Advisers | 0.11% | Add +0.2% | 395,039 | $140.9M |
| Haverford Trust Co | 1.22% | Reduce -1.4% | 380,085 | $135.5M |
| Wells Fargo & Company | 0.03% | Reduce -8.6% | 371,868 | $132.6M |
| Sei Investments Co. | 0.14% | Reduce -8.3% | 371,158 | $132.3M |
| NorthCoast Asset Management LLC | 0.50% | Add +13.5% | 358,759 | $127.9M |
| Bowie Capital Management, LLC | 5.74% | Add +31.0% | 356,887 | $127.3M |
| Natixis Advisors, LLC | 0.19% | Add +40.1% | 355,826 | $126.9M |
| Prana Capital Management, LP | 4.05% | Reduce -34.2% | 340,562 | $121.4M |
| Aviva PLC | 0.21% | Add +4.9% | 326,832 | $116.5M |
| California State Teachers Retirement System | 0.12% | Add +4.1% | 325,574 | $116.1M |
| New York State Common Retirement Fund | 0.15% | Reduce -4.5% | 318,096 | $113.4M |
| Janus Henderson Group PLC | 0.05% | Add +98.3% | 314,591 | $112.2M |
| Russell Investments Group, Ltd. | 0.12% | Add +0.7% | 293,677 | $104.7M |
| BloombergSen Inc. | 8.57% | Reduce -1.0% | 283,084 | $100.9M |
| Woodline Partners LP | 0.47% | Reduce -32.2% | 280,085 | $99.9M |
| DekaBank Deutsche Girozentrale | 0.16% | No change | 275,444 | $97.3M |
| DAVENPORT & Co LLC | 0.52% | Reduce -1.5% | 271,892 | $96.8M |
| Fiducient Advisors LLC | 11.05% | Reduce -21.6% | 265,167 | $94.6M |
| Raymond James Financial Inc. | 0.03% | Add +3.3% | 260,387 | $92.8M |
| Assenagon Asset Management S.A. | 0.14% | Add +49.0% | 258,654 | $92.2M |
| Principal Financial Group Inc. | 0.05% | Reduce -1.8% | 256,631 | $91.5M |
| Lord, Abbett & Co. LLC | 0.28% | Add +1.5% | 249,168 | $88.8M |
| Alyeska Investment Group, L.P. | 0.27% | Reduce -34.2% | 247,977 | $88.4M |
| Manufacturers Life Insurance Company, The | 0.07% | Reduce -20.5% | 247,422 | $88.2M |
| Bristol John W & Co. Inc. | 1.38% | Reduce -1.9% | 244,744 | $87.3M |
| Citigroup Inc. | 0.06% | Add +21.7% | 239,320 | $85.3M |
| BNP Paribas Financial Markets | 0.07% | Reduce -19.9% | 236,768 | $84.4M |
| Alliancebernstein L.P. | 0.03% | Reduce -19.3% | 235,760 | $84.1M |
| Cryder Capital Partners LLP | 4.55% | No change | 231,314 | $82.5M |
| Ensign Peak Advisors, Inc | 0.14% | Reduce -3.5% | 230,883 | $82.3M |
"% of holder's portfolio" is AON's weight in each manager's 13F, not the share of Aon PLC Class A the manager owns.