Aon PLC Class AAON
13F holders, Q1 2025 (March 31)1,267holders +82
154new positions
67sold out
10famous investors
$398.04avg. 13F price*
At the end of Q1 2025, 1,267 institutions reported holding Aon PLC Class A (AON) in their 13F filings, up 82 from Q4 2024. 154 opened new positions and 67 sold out. The largest holders were Vanguard Group Inc. ($7.9B), BlackRock, Inc. ($6.0B) and Capital World Investors ($4.8B). 10 famous investors held it, including Warren Buffett (0.6% of Berkshire Hathaway's portfolio), Tom Gayner (0.5% of Markel Group's portfolio) and Israel Englander (0.2% of Millennium Management'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 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 154 | $972.0M |
| Exits | 67 | $766.6M |
All 13F filers, Q4 2024 → Q1 2025: 12,640,294 shares bought and 11,795,270 shares sold, net +845,024 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,267 holders
| Vanguard Group Inc. | 0.14% | Add +1.3% | 19,778,451 | $7.9B |
| BlackRock, Inc. | 0.13% | Add +2.3% | 15,099,285 | $6.0B |
| Capital World Investors | 0.78% | Add +0.0% | 12,097,577 | $4.8B |
| Massachusetts Financial Services Co. | 1.31% | Reduce -15.4% | 9,832,327 | $3.9B |
| State Street Corp. | 0.15% | Add +0.9% | 9,173,788 | $3.7B |
| Morgan Stanley | 0.25% | Add +4.1% | 8,726,304 | $3.5B |
| JPMorgan Chase & Co. | 0.17% | Add +5.6% | 5,656,323 | $2.3B |
| Geode Capital Management, LLC | 0.17% | Add +9.4% | 5,414,557 | $2.2B |
| HPS Investment Partners, LLC | 99.44% | No change | 4,339,759 | $1.7B |
| Berkshire Hathaway | 0.63% | No change | 4,100,000 | $1.6B |
| Mawer Investment Management Ltd. | 6.31% | Reduce -16.1% | 3,273,574 | $1.3B |
| Bank of New York Mellon Corp | 0.24% | Add +18.3% | 3,034,062 | $1.2B |
| Polen Capital Management LLC | 3.77% | Add +318.1% | 3,007,719 | $1.2B |
| Eagle Capital Management LLC | 3.82% | Reduce -34.1% | 2,623,489 | $1.0B |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.88% | Add +2.6% | 2,390,571 | $954.1M |
| Northern Trust Corp. | 0.14% | Add +6.1% | 2,290,619 | $914.2M |
| Lazard Asset Management LLC | 1.50% | Reduce -4.1% | 2,240,955 | $894.3M |
| Neuberger Berman Group LLC | 0.71% | Add +0.6% | 2,136,107 | $852.5M |
| Artisan Partners Limited Partnership | 1.38% | Add +3.3% | 2,135,832 | $852.4M |
| Boston Partners | 1.02% | Add +4.2% | 2,121,607 | $844.5M |
| WCM Investment Management, LLC | 2.08% | Add +0.3% | 2,051,816 | $809.5M |
| Bank of America Corp. | 0.07% | Add +16.4% | 1,869,779 | $746.2M |
| Veritas Asset Management LLP | 7.42% | Reduce -17.1% | 1,839,697 | $734.2M |
| Capital International Investors | 0.13% | Reduce -12.6% | 1,681,579 | $670.8M |
| Norges Bank | 0.09% | Add +0.3% | 1,665,948 | $664.9M |
| Sustainable Growth Advisers, LP | 3.55% | Reduce -29.6% | 1,592,962 | $635.7M |
| Independent Franchise Partners LLP | 4.51% | Reduce -21.5% | 1,583,221 | $631.8M |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 0.69% | Reduce -1.2% | 1,470,020 | $586.7M |
| Longview Partners (Guernsey) LTD | 4.44% | Reduce -5.9% | 1,381,341 | $551.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.14% | Add +7.6% | 1,370,523 | $547.0M |
| Mackenzie Financial Corp. | 0.76% | Reduce -10.8% | 1,336,295 | $533.3M |
| Legal & General Group Plc | 0.14% | Reduce -4.3% | 1,321,194 | $527.3M |
| UBS Group AG | 0.12% | Add +46.8% | 1,305,499 | $521.0M |
| Cantillon Capital Management LLC | 3.32% | Reduce -3.0% | 1,283,548 | $512.3M |
| Nuveen, LLC | 0.15% | — | 1,265,651 | $505.1M |
| Charles Schwab Investment Management Inc. | 0.09% | Add +1.3% | 1,253,997 | $500.5M |
| Wellington Management Group LLP | 0.09% | New | 1,229,382 | $490.6M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 2.22% | Reduce -2.8% | 1,212,599 | $483.9M |
| Invesco Ltd. | 0.09% | Add +13.4% | 1,158,139 | $462.2M |
| Goldman Sachs Group Inc. | 0.09% | Add +0.3% | 1,124,300 | $448.7M |
| FIL Ltd | 0.41% | Reduce -7.4% | 1,074,205 | $428.7M |
| Farallon Capital Management, L.L.C. | 2.04% | Reduce -25.7% | 1,361,744 | $378.3M |
| Ameriprise Financial Inc. | 0.10% | Add +0.2% | 925,721 | $369.4M |
| FMR LLC | 0.02% | Add +1.1% | 912,181 | $364.0M |
| Barclays PLC | 0.16% | Add +60.8% | 878,929 | $350.8M |
| California Public Employees Retirement System | 0.23% | Reduce -2.9% | 830,012 | $331.2M |
| Amundi | 0.12% | Add +11.9% | 831,877 | $328.0M |
| Dimensional Fund Advisors LP | 0.08% | Add +10.3% | 812,713 | $324.3M |
| Voya Investment Management LLC | 0.39% | Add +23.3% | 744,241 | $297.0M |
| C WorldWide Group Holding A/S | 3.61% | Reduce -2.1% | 728,758 | $290.8M |
| First Pacific Advisors, LP | 4.39% | Reduce -6.7% | 680,012 | $271.4M |
| Royal Bank of Canada | 0.06% | Add +19.5% | 671,679 | $268.1M |
| T. Rowe Price Associates Inc. | 0.03% | Reduce -6.5% | 661,596 | $264.0M |
| USS Investment Management Ltd | 1.94% | Reduce -0.6% | 640,299 | $255.5M |
| OMERS ADMINISTRATION Corp | 2.10% | Reduce -0.2% | 601,417 | $240.0M |
| Blair William & Co. | 0.67% | Reduce -1.7% | 554,750 | $221.4M |
| Swiss National Bank | 0.15% | Reduce -0.6% | 549,000 | $219.1M |
| First Trust Advisors LP | 0.18% | Reduce -3.5% | 517,371 | $206.5M |
| Assenagon Asset Management S.A. | 0.35% | Add +205.1% | 493,694 | $197.0M |
| Deutsche Bank AG | 0.07% | Add +5.7% | 470,695 | $187.8M |
| Envestnet Asset Management Inc. | 0.06% | Add +25.1% | 461,160 | $184.0M |
| Sumitomo Mitsui Trust Group, Inc. | 0.13% | Reduce -0.1% | 453,955 | $181.2M |
| Fiera Capital Corp | 0.65% | Reduce -8.8% | 453,395 | $180.9M |
| Balyasny Asset Management L.P. | 0.43% | Reduce -7.8% | 428,842 | $171.1M |
| Millennium Management | 0.17% | Add +540.8% | 425,678 | $169.9M |
| Fiducient Advisors LLC | 21.19% | Add +20.9% | 424,865 | $169.6M |
| Sei Investments Co. | 0.22% | Add +39.4% | 419,101 | $167.3M |
| Wells Fargo & Company | 0.04% | Add +41.7% | 402,731 | $160.7M |
| Haverford Trust Co | 1.55% | Add +13.7% | 386,749 | $154.3M |
| Rhumbline Advisers | 0.14% | Add +2.3% | 377,368 | $150.6M |
| Bank of Montreal | 0.08% | Add +1.9% | 370,191 | $147.7M |
| BNP Paribas Financial Markets | 0.11% | Add +23.0% | 368,291 | $147.0M |
| Douglass Winthrop Advisors, LLC | 2.79% | Reduce -1.2% | 367,700 | $146.7M |
| National Pension Service | 0.13% | Add +4.2% | 349,161 | $139.3M |
| Woodline Partners LP | 0.87% | Add +39.8% | 336,515 | $134.3M |
| NorthCoast Asset Management LLC | 0.66% | Add +8.1% | 327,323 | $130.6M |
| New York State Common Retirement Fund | 0.19% | Add +13.6% | 319,778 | $127.6M |
| California State Teachers Retirement System | 0.15% | Reduce -1.4% | 309,812 | $123.6M |
| BloombergSen Inc. | 9.98% | Reduce -1.7% | 289,525 | $115.5M |
| Russell Investments Group, Ltd. | 0.16% | Add +13.7% | 288,306 | $115.0M |
| Wealthspire Advisors, LLC | 0.69% | Reduce -2.9% | 288,132 | $115.0M |
| Natixis Advisors, LLC | 0.21% | Add +2.3% | 286,512 | $114.3M |
| T. Rowe Price Investment Management, Inc. | 0.08% | New | 284,411 | $113.5M |
| Citadel Advisors | 0.11% | Add +947.0% | 282,699 | $112.8M |
| DAVENPORT & Co LLC | 0.65% | Reduce -0.7% | 276,133 | $109.9M |
| Raymond James Financial Inc. | 0.04% | Add +13.1% | 272,072 | $108.6M |
| DekaBank Deutsche Girozentrale | 0.21% | Reduce -0.1% | 275,109 | $107.6M |
| Principal Financial Group Inc. | 0.06% | Reduce -0.7% | 265,462 | $105.9M |
| Ensign Peak Advisors, Inc | 0.20% | Add +29.1% | 259,518 | $103.6M |
| Prana Capital Management, LP | 4.10% | Add +92.6% | 252,614 | $100.8M |
| Aviva PLC | 0.24% | Reduce -2.4% | 249,652 | $99.6M |
| Verition Fund Management LLC | 0.58% | Reduce -9.4% | 244,073 | $97.4M |
| Lord, Abbett & Co. LLC | 0.36% | Add +1.5% | 242,715 | $96.9M |
| Citigroup Inc. | 0.07% | Add +83.6% | 236,517 | $94.4M |
| Altrinsic Global Advisors LLC | 4.65% | Reduce -0.5% | 236,234 | $94.3M |
| Bowie Capital Management, LLC | 4.69% | Reduce -14.4% | 231,871 | $92.5M |
| Scharf Investments, LLC | 2.78% | Reduce -2.5% | 230,457 | $92.0M |
| Qube Research & Technologies Ltd | 0.14% | Add +322.0% | 225,262 | $89.9M |
| Alliancebernstein L.P. | 0.03% | Reduce -0.2% | 216,149 | $86.3M |
| Weitz Investment Management, Inc. | 4.53% | Reduce -18.2% | 213,450 | $85.2M |
"% of holder's portfolio" is AON's weight in each manager's 13F, not the share of Aon PLC Class A the manager owns.