Aon PLC Class AAON
13F holders, Q4 2025 (December 31)1,279holders +33
87new positions
96sold out
14famous investors
$352.67avg. 13F price*
At the end of Q4 2025, 1,279 institutions reported holding Aon PLC Class A (AON) in their 13F filings, up 33 from Q3 2025. 87 opened new positions and 96 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 (0.7% 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 Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 87 | $341.8M |
| Exits | 96 | $220.5M |
All 13F filers, Q3 2025 → Q4 2025: 13,649,084 shares bought and 13,790,614 shares sold, net −141,530 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,279 holders
| Vanguard Group Inc. | 0.10% | Add +1.0% | 20,171,049 | $7.1B |
| BlackRock, Inc. | 0.10% | Add +2.5% | 16,236,934 | $5.7B |
| Capital World Investors | 0.59% | Add +1.5% | 12,252,904 | $4.3B |
| State Street Corp. | 0.11% | Reduce -0.3% | 9,203,973 | $3.2B |
| Massachusetts Financial Services Co. | 0.97% | Reduce -2.4% | 8,545,036 | $3.0B |
| Dodge & Cox | 1.50% | Add +126.6% | 7,852,456 | $2.8B |
| Morgan Stanley | 0.12% | Reduce -9.2% | 5,570,506 | $2.0B |
| Geode Capital Management, LLC | 0.11% | Add +0.6% | 5,141,363 | $1.8B |
| Berkshire Hathaway | 0.46% | Reduce -12.1% | 3,602,995 | $1.3B |
| Bank of New York Mellon Corp | 0.22% | Reduce -6.4% | 3,479,061 | $1.2B |
| Norges Bank | 0.12% | — | 3,275,848 | $1.2B |
| JPMorgan Chase & Co. | 0.08% | Reduce -4.6% | 3,192,216 | $1.1B |
| Farallon Capital Management, L.L.C. | 4.89% | Add +17.0% | 2,665,238 | $940.5M |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 0.75% | Add +8947.7% | 2,415,006 | $852.2M |
| Eagle Capital Management LLC | 2.49% | Reduce -0.7% | 2,269,414 | $800.8M |
| Independent Franchise Partners LLP | 4.75% | Add +0.9% | 2,115,523 | $746.5M |
| Northern Trust Corp. | 0.09% | Reduce -5.1% | 2,099,652 | $740.9M |
| WCM Investment Management, LLC | 1.46% | Reduce -2.5% | 1,986,128 | $708.0M |
| Veritas Asset Management LLP | 7.19% | Reduce -3.0% | 1,992,453 | $703.1M |
| Polen Capital Management LLC | 2.78% | Reduce -25.9% | 1,846,294 | $651.5M |
| Neuberger Berman Group LLC | 0.47% | Reduce -22.6% | 1,804,303 | $636.7M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.42% | Reduce -0.6% | 1,812,888 | $624.1M |
| Boston Partners | 0.60% | Reduce -4.5% | 1,635,007 | $576.3M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 2.89% | Add +2.1% | 1,596,315 | $563.3M |
| Mawer Investment Management Ltd. | 2.92% | Reduce -40.9% | 1,477,693 | $521.4M |
| Goldman Sachs Group Inc. | 0.07% | Add +7.5% | 1,409,797 | $497.5M |
| Bank of America Corp. | 0.04% | Reduce -5.2% | 1,360,588 | $480.1M |
| Legal & General Group Plc | 0.11% | Reduce -4.3% | 1,350,069 | $476.4M |
| FMR LLC | 0.02% | Add +129.9% | 1,341,164 | $473.3M |
| Invesco Ltd. | 0.04% | Add +6.9% | 1,336,129 | $471.5M |
| Charles Schwab Investment Management Inc. | 0.07% | Add +1.2% | 1,310,740 | $462.5M |
| Lazard Asset Management LLC | 0.77% | Add +2.0% | 1,286,072 | $453.8M |
| Capital International Investors | 0.07% | Reduce -28.5% | 1,255,765 | $443.4M |
| Cantillon Capital Management LLC | 2.37% | Add +0.8% | 1,243,018 | $438.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.09% | Reduce -5.0% | 1,239,308 | $437.3M |
| Sustainable Growth Advisers, LP | 2.99% | Reduce -7.3% | 1,221,467 | $431.0M |
| Amundi | 0.13% | Reduce -12.0% | 1,217,341 | $429.6M |
| Artisan Partners Limited Partnership | 0.60% | Reduce -11.8% | 1,117,428 | $394.3M |
| Ameriprise Financial Inc. | 0.09% | Reduce -6.2% | 1,108,214 | $391.1M |
| Longview Partners (Guernsey) LTD | 4.07% | Reduce -4.4% | 1,105,784 | $390.2M |
| Dimensional Fund Advisors LP | 0.08% | Add +10.3% | 1,040,718 | $367.3M |
| Royal Bank of Canada | 0.06% | Add +0.9% | 954,748 | $336.9M |
| FIL Ltd | 0.23% | Reduce -4.8% | 883,757 | $311.9M |
| UBS Group AG | 0.06% | Reduce -31.4% | 820,117 | $289.4M |
| Nuveen, LLC | 0.07% | Reduce -22.9% | 808,183 | $285.2M |
| Deutsche Bank AG | 0.09% | Add +29.9% | 795,630 | $280.8M |
| Viking Global Investors | 0.73% | Reduce -44.6% | 783,650 | $276.5M |
| Vontobel Holding Ltd. | 0.88% | Reduce -14.5% | 760,139 | $268.2M |
| USS Investment Management Ltd | 1.19% | Add +6.4% | 681,743 | $240.6M |
| First Pacific Advisors, LP | 3.11% | Add +0.3% | 656,531 | $231.7M |
| Altrinsic Global Advisors LLC | 8.24% | Reduce -4.6% | 651,207 | $229.8M |
| Southpoint Capital Advisors LP | 5.33% | New | 650,000 | $229.4M |
| Millennium Management | 0.17% | Add +28.3% | 636,922 | $224.8M |
| California Public Employees Retirement System | 0.12% | Reduce -14.1% | 608,213 | $214.6M |
| Adage Capital Partners Gp, L.L.C. | 0.32% | Reduce -6.1% | 606,569 | $214.0M |
| Barclays PLC | 0.08% | Reduce -12.6% | 588,544 | $207.7M |
| T. Rowe Price Associates Inc. | 0.02% | Reduce -5.8% | 578,391 | $204.1M |
| OMERS ADMINISTRATION Corp | 1.43% | Reduce -5.6% | 567,479 | $200.3M |
| Swiss National Bank | 0.12% | Reduce -5.1% | 561,340 | $198.1M |
| Focus Partners Wealth | 0.22% | Add +396.1% | 546,204 | $192.8M |
| Fiera Capital Corp | 0.60% | Reduce -2.9% | 533,582 | $188.3M |
| Blair William & Co. | 0.47% | Reduce -6.3% | 496,307 | $175.1M |
| National Pension Service | 0.12% | Add +12.4% | 472,500 | $166.7M |
| Sumitomo Mitsui Trust Group, Inc. | 0.10% | Reduce -3.5% | 470,902 | $166.2M |
| Voya Investment Management LLC | 0.19% | Reduce -16.9% | 466,216 | $164.5M |
| Sei Investments Co. | 0.16% | Add +24.4% | 461,800 | $163.0M |
| Arrowstreet Capital, Limited Partnership | 0.09% | Add +157.8% | 456,552 | $161.1M |
| Citadel Advisors | 0.11% | Reduce -51.3% | 442,286 | $156.1M |
| C WorldWide Group Holding A/S | 2.66% | Reduce -16.5% | 432,180 | $152.5M |
| AQR Capital Management | 0.08% | Add +276.1% | 430,173 | $151.8M |
| BNP Paribas Financial Markets | 0.10% | Add +78.3% | 422,064 | $148.9M |
| Douglass Winthrop Advisors, LLC | 2.42% | Reduce -2.3% | 392,615 | $138.5M |
| Balyasny Asset Management L.P. | 0.27% | Reduce -54.3% | 387,013 | $136.6M |
| Rhumbline Advisers | 0.11% | Reduce -2.8% | 383,823 | $135.4M |
| Haverford Trust Co | 1.10% | Reduce -7.6% | 351,168 | $123.9M |
| Envestnet Asset Management Inc. | 0.04% | Reduce -16.7% | 344,312 | $121.5M |
| Bowie Capital Management, LLC | 5.01% | Reduce -3.6% | 344,149 | $121.4M |
| Wells Fargo & Company | 0.02% | Reduce -8.6% | 340,049 | $120.0M |
| Natixis Advisors, LLC | 0.17% | Reduce -6.0% | 334,511 | $118.0M |
| Aviva PLC | 0.20% | Add +2.0% | 333,454 | $117.7M |
| Mackenzie Financial Corp. | 0.14% | Reduce -28.7% | 328,701 | $116.9M |
| California State Teachers Retirement System | 0.11% | Reduce -2.2% | 318,341 | $112.3M |
| Bank of Montreal | 0.05% | Reduce -22.3% | 315,972 | $111.5M |
| Russell Investments Group, Ltd. | 0.12% | Add +4.4% | 306,498 | $108.2M |
| Cryder Capital Partners LLP | 6.15% | Add +27.6% | 295,151 | $104.2M |
| Franklin Resources Inc. | 0.03% | Add +271.1% | 290,264 | $102.4M |
| Bristol John W & Co. Inc. | 1.55% | Add +16.9% | 286,128 | $101.0M |
| Wealthspire Advisors, LLC | 0.77% | Add +18.5% | 273,596 | $96.5M |
| Lord, Abbett & Co. LLC | 0.31% | Add +9.2% | 272,046 | $96.0M |
| DAVENPORT & Co LLC | 0.52% | Reduce -0.9% | 269,360 | $95.3M |
| BloombergSen Inc. | 9.79% | Reduce -7.2% | 262,750 | $92.7M |
| Comgest Global Investors S.A.S. | 1.61% | Add +1860.3% | 256,800 | $90.6M |
| Woodline Partners LP | 0.35% | Reduce -8.5% | 256,381 | $90.5M |
| Principal Financial Group Inc. | 0.04% | Reduce -3.2% | 248,481 | $87.7M |
| Raymond James Financial Inc. | 0.03% | Reduce -5.3% | 246,645 | $87.0M |
| New York State Common Retirement Fund | 0.11% | Reduce -23.7% | 242,632 | $85.6M |
| DekaBank Deutsche Girozentrale | 0.15% | No change | 275,444 | $85.0M |
| Manufacturers Life Insurance Company, The | 0.07% | Reduce -6.2% | 232,033 | $81.9M |
| Citigroup Inc. | 0.05% | Reduce -7.1% | 222,425 | $78.5M |
| Weitz Investment Management, Inc. | 4.58% | Add +2.5% | 218,735 | $77.2M |
"% of holder's portfolio" is AON's weight in each manager's 13F, not the share of Aon PLC Class A the manager owns.