Aon PLC Class AAON
13F holders, Q1 2026 (March 31)1,255holders −24
118new positions
142sold out
14famous investors
$323.07avg. 13F price*
At the end of Q1 2026, 1,255 institutions reported holding Aon PLC Class A (AON) in their 13F filings, down 24 from Q4 2025. 118 opened new positions and 142 sold out. The largest holders were BlackRock, Inc. ($5.2B), Vanguard Capital Management LLC ($4.4B) and Capital World Investors ($3.7B). 14 famous investors held it, including Seth Klarman (4.9% of Baupost Group's portfolio), Andreas Halvorsen (1.0% of Viking Global Investors'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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 118 | $732.5M |
| Exits | 142 | $1.5B |
All 13F filers, Q4 2025 → Q1 2026: 17,189,515 shares bought and 15,534,811 shares sold, net +1,654,704 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,255 holders
| BlackRock, Inc. | 0.09% | Reduce -0.5% | 16,148,507 | $5.2B |
| Vanguard Capital Management LLC | 0.11% | — | 13,581,756 | $4.4B |
| Capital World Investors | 0.51% | Reduce -6.3% | 11,477,788 | $3.7B |
| State Street Corp. | 0.10% | Add +0.2% | 9,219,773 | $3.0B |
| Massachusetts Financial Services Co. | 0.93% | Reduce -2.2% | 8,358,097 | $2.8B |
| Dodge & Cox | 1.44% | Add +3.4% | 8,116,095 | $2.6B |
| Morgan Stanley | 0.12% | Add +14.4% | 6,374,945 | $2.1B |
| JPMorgan Chase & Co. | 0.12% | Add +76.7% | 5,641,431 | $1.8B |
| Geode Capital Management, LLC | 0.10% | Add +2.0% | 5,244,309 | $1.7B |
| Vanguard Portfolio Management LLC | 0.08% | — | 4,559,035 | $1.5B |
| Bank of New York Mellon Corp | 0.20% | Reduce -4.5% | 3,321,092 | $1.1B |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 0.88% | Add +22.1% | 2,948,410 | $951.7M |
| Independent Franchise Partners LLP | 5.85% | Add +22.3% | 2,588,002 | $835.4M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.55% | Add +38.8% | 2,516,637 | $812.3M |
| Farallon Capital Management, L.L.C. | 4.83% | Reduce -5.7% | 2,512,638 | $811.0M |
| Northern Trust Corp. | 0.09% | Reduce -0.8% | 2,082,105 | $672.1M |
| WCM Investment Management, LLC | 1.44% | Reduce -1.7% | 1,952,379 | $632.7M |
| Boston Partners | 0.66% | Add +19.6% | 1,955,032 | $631.1M |
| Neuberger Berman Group LLC | 0.46% | Add +3.0% | 1,857,834 | $599.7M |
| Artisan Partners Limited Partnership | 0.87% | Add +47.1% | 1,644,152 | $530.7M |
| Goldman Sachs Group Inc. | 0.07% | Add +12.4% | 1,583,991 | $511.3M |
| Bank of America Corp. | 0.04% | Add +16.3% | 1,582,680 | $510.9M |
| Veritas Asset Management LLP | 8.31% | Reduce -23.7% | 1,520,277 | $490.7M |
| Amundi | 0.13% | Add +23.5% | 1,502,890 | $485.1M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 3.00% | Reduce -6.8% | 1,487,887 | $480.3M |
| Invesco Ltd. | 0.05% | Add +11.3% | 1,486,623 | $479.9M |
| Charles Schwab Investment Management Inc. | 0.07% | Add +3.4% | 1,355,094 | $437.4M |
| Polen Capital Management LLC | 3.02% | Reduce -26.7% | 1,354,053 | $437.1M |
| Legal & General Group Plc | 0.10% | Reduce -0.7% | 1,341,222 | $432.9M |
| T. Rowe Price Associates Inc. | 0.05% | Add +121.5% | 1,280,926 | $413.5M |
| Mawer Investment Management Ltd. | 2.67% | Reduce -13.6% | 1,277,088 | $412.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.08% | Add +1.8% | 1,262,123 | $407.4M |
| Dimensional Fund Advisors LP | 0.08% | Add +20.5% | 1,253,769 | $404.7M |
| Vanguard Fiduciary Trust Co. | 0.10% | — | 1,225,563 | $395.6M |
| Lazard Asset Management LLC | 0.65% | Reduce -5.3% | 1,217,243 | $392.9M |
| Cantillon Capital Management LLC | 2.35% | Reduce -11.9% | 1,095,574 | $353.6M |
| Viking Global Investors | 0.98% | Add +38.7% | 1,087,114 | $350.9M |
| Ameriprise Financial Inc. | 0.08% | Reduce -2.5% | 1,080,672 | $348.8M |
| Sustainable Growth Advisers, LP | 3.20% | Reduce -13.9% | 1,051,805 | $339.5M |
| Vontobel Holding Ltd. | 1.11% | Add +31.4% | 999,176 | $322.5M |
| Wealthspire Advisors, LLC | 2.49% | Add +259.7% | 984,075 | $317.6M |
| AQR Capital Management | 0.14% | Add +127.8% | 979,755 | $316.2M |
| Longview Partners (Guernsey) LTD | 4.46% | Reduce -11.7% | 976,263 | $315.1M |
| UBS Group AG | 0.05% | Add +10.2% | 903,928 | $291.8M |
| Nuveen, LLC | 0.07% | Add +5.3% | 851,081 | $274.7M |
| Capital International Investors | 0.06% | Reduce -35.7% | 807,075 | $260.6M |
| Arrowstreet Capital, Limited Partnership | 0.14% | Add +74.7% | 797,418 | $257.4M |
| Baupost Group | 4.85% | New | 769,000 | $248.2M |
| FIL Ltd | 0.19% | Reduce -15.6% | 745,959 | $240.8M |
| First Pacific Advisors, LP | 3.24% | Add +7.1% | 703,258 | $227.0M |
| Royal Bank of Canada | 0.04% | Reduce -27.9% | 688,130 | $222.1M |
| Meritage Group LP | 8.28% | New | 680,169 | $219.5M |
| Altrinsic Global Advisors LLC | 7.64% | Add +1.5% | 660,724 | $213.3M |
| Deutsche Bank AG | 0.07% | Reduce -19.0% | 644,736 | $208.1M |
| Focus Partners Wealth | 0.23% | Add +15.5% | 630,805 | $203.6M |
| Comgest Global Investors S.A.S. | 4.42% | Add +144.8% | 628,700 | $202.9M |
| Barclays PLC | 0.07% | Add +2.0% | 600,554 | $193.8M |
| Swiss National Bank | 0.11% | Add +6.8% | 599,260 | $193.4M |
| OMERS ADMINISTRATION Corp | 1.18% | No change | 567,479 | $183.2M |
| Fiera Capital Corp | 0.61% | Add +3.1% | 550,287 | $177.6M |
| Manufacturers Life Insurance Company, The | 0.15% | Add +136.1% | 547,850 | $176.8M |
| FMR LLC | 0.01% | Reduce -61.0% | 523,184 | $168.9M |
| USS Investment Management Ltd | 0.69% | Reduce -26.3% | 502,480 | $162.2M |
| Southpoint Capital Advisors LP | 3.32% | Reduce -23.1% | 500,000 | $161.4M |
| California Public Employees Retirement System | 0.09% | Reduce -21.8% | 475,942 | $153.6M |
| National Pension Service | 0.12% | Add +0.6% | 475,543 | $153.5M |
| Vanguard Global Advisers, LLC | 0.08% | — | 469,130 | $151.4M |
| Eagle Capital Management LLC | 0.50% | Reduce -79.6% | 463,350 | $149.6M |
| Sei Investments Co. | 0.13% | Reduce -2.1% | 451,925 | $145.9M |
| Sumitomo Mitsui Trust Group, Inc. | 0.09% | Reduce -5.0% | 447,301 | $144.4M |
| Envestnet Asset Management Inc. | 0.04% | Add +22.9% | 423,209 | $136.6M |
| Blair William & Co. | 0.39% | Reduce -15.1% | 421,605 | $136.1M |
| C WorldWide Group Holding A/S | 2.77% | Reduce -7.6% | 399,312 | $128.9M |
| Douglass Winthrop Advisors, LLC | 2.33% | Add +0.5% | 394,536 | $127.3M |
| Rhumbline Advisers | 0.11% | Reduce -0.8% | 380,644 | $122.9M |
| BNP Paribas Financial Markets | 0.08% | Reduce -12.7% | 368,360 | $118.9M |
| Wells Fargo & Company | 0.02% | Add +7.5% | 365,706 | $118.0M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.10% | — | 361,858 | $116.8M |
| Franklin Resources Inc. | 0.03% | Add +24.5% | 361,315 | $116.6M |
| HSBC Holdings PLC | 0.07% | Add +85.7% | 354,158 | $114.4M |
| Haverford Trust Co | 1.02% | Reduce -1.4% | 346,117 | $111.7M |
| Natixis Advisors, LLC | 0.15% | Add +2.2% | 341,937 | $110.4M |
| DAVENPORT & Co LLC | 0.60% | Add +25.1% | 337,041 | $108.9M |
| Prana Capital Management, LP | 3.20% | Add +107.1% | 323,458 | $104.4M |
| Bowie Capital Management, LLC | 4.92% | Reduce -6.4% | 322,167 | $104.0M |
| Cryder Capital Partners LLP | 6.78% | Add +9.0% | 321,689 | $103.8M |
| Aviva PLC | 0.17% | Reduce -6.9% | 310,335 | $100.2M |
| California State Teachers Retirement System | 0.11% | Reduce -2.9% | 308,973 | $99.7M |
| Lord, Abbett & Co. LLC | 0.33% | Add +9.7% | 298,530 | $96.4M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.11% | Add +453.2% | 291,337 | $94.1M |
| Bank of Montreal | 0.04% | Reduce -8.8% | 288,235 | $93.0M |
| Bristol John W & Co. Inc. | 1.50% | Reduce -1.1% | 283,054 | $91.4M |
| DekaBank Deutsche Girozentrale | 0.15% | No change | 275,444 | $90.4M |
| CapitalatWork S.A. | 2.62% | Add +37.5% | 272,003 | $87.8M |
| Canada Pension Plan Investment Board | 0.06% | Add +1104.0% | 269,059 | $86.8M |
| Russell Investments Group, Ltd. | 0.09% | Reduce -14.2% | 262,916 | $84.9M |
| Scharf Investments, LLC | 2.54% | Add +22.5% | 254,941 | $82.3M |
| BloombergSen Inc. | 9.18% | Reduce -3.3% | 254,006 | $82.0M |
| Jones Financial Companies LLLP | 0.04% | Add +4814.3% | 259,033 | $81.3M |
| Principal Financial Group Inc. | 0.04% | Add +1.0% | 250,925 | $81.0M |
"% of holder's portfolio" is AON's weight in each manager's 13F, not the share of Aon PLC Class A the manager owns.