Aon PLC Class AAON
13F holders, Q2 2025 (June 30)1,223holders −44
91new positions
133sold out
11famous investors
$356.71avg. 13F price*
At the end of Q2 2025, 1,223 institutions reported holding Aon PLC Class A (AON) in their 13F filings, down 44 from Q1 2025. 91 opened new positions and 133 sold out. The largest holders were Vanguard Group Inc. ($7.2B), BlackRock, Inc. ($5.7B) and Capital World Investors ($4.3B). 11 famous investors held it, including Warren Buffett (0.6% of Berkshire Hathaway's portfolio), Tom Gayner (0.4% of Markel Group's portfolio) and Joel Greenblatt (0.1% of Gotham Asset 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 Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 91 | $696.0M |
| Exits | 133 | $660.7M |
All 13F filers, Q1 2025 → Q2 2025: 12,973,248 shares bought and 12,191,833 shares sold, net +781,415 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,223 holders
| Vanguard Group Inc. | 0.12% | Add +2.6% | 20,289,743 | $7.2B |
| BlackRock, Inc. | 0.11% | Add +5.5% | 15,930,760 | $5.7B |
| Capital World Investors | 0.63% | Add +0.4% | 12,144,237 | $4.3B |
| Morgan Stanley | 0.22% | Add +8.5% | 9,467,412 | $3.4B |
| State Street Corp. | 0.12% | Reduce -0.5% | 9,124,310 | $3.3B |
| Massachusetts Financial Services Co. | 1.01% | Reduce -8.9% | 8,952,011 | $3.2B |
| Geode Capital Management, LLC | 0.14% | Add +3.2% | 5,588,279 | $2.0B |
| JPMorgan Chase & Co. | 0.12% | Reduce -16.9% | 4,699,602 | $1.7B |
| HPS Investment Partners, LLC | 99.49% | Reduce -2.2% | 4,243,321 | $1.5B |
| Berkshire Hathaway | 0.57% | No change | 4,100,000 | $1.5B |
| Bank of New York Mellon Corp | 0.24% | Add +15.6% | 3,507,656 | $1.3B |
| Mawer Investment Management Ltd. | 5.38% | Reduce -9.2% | 2,971,533 | $1.1B |
| Polen Capital Management LLC | 3.01% | Reduce -8.7% | 2,745,627 | $979.5M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.77% | Add +13.2% | 2,706,904 | $965.7M |
| Eagle Capital Management LLC | 2.69% | Reduce -12.9% | 2,284,259 | $814.9M |
| Northern Trust Corp. | 0.11% | Reduce -1.0% | 2,268,683 | $809.4M |
| Artisan Partners Limited Partnership | 1.16% | Add +1.9% | 2,176,045 | $776.3M |
| Norges Bank | 0.09% | Add +27.0% | 2,115,346 | $754.7M |
| Neuberger Berman Group LLC | 0.57% | Reduce -2.6% | 2,080,814 | $742.3M |
| WCM Investment Management, LLC | 1.64% | Reduce -0.6% | 2,040,243 | $719.7M |
| Farallon Capital Management, L.L.C. | 3.24% | Add +45.9% | 1,986,417 | $708.7M |
| Sustainable Growth Advisers, LP | 3.40% | Add +16.0% | 1,847,140 | $659.0M |
| Lazard Asset Management LLC | 0.99% | Reduce -18.7% | 1,822,886 | $650.3M |
| Veritas Asset Management LLP | 6.14% | Reduce -6.5% | 1,720,988 | $614.0M |
| Capital International Investors | 0.11% | Add +1.3% | 1,703,080 | $607.3M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 2.58% | Add +29.9% | 1,574,511 | $561.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.11% | Add +12.6% | 1,542,969 | $550.5M |
| Boston Partners | 0.59% | Reduce -30.2% | 1,481,152 | $528.8M |
| Independent Franchise Partners LLP | 3.51% | Reduce -6.5% | 1,480,916 | $528.3M |
| FMR LLC | 0.03% | Add +59.8% | 1,457,728 | $520.1M |
| Bank of America Corp. | 0.04% | Reduce -23.8% | 1,423,988 | $508.0M |
| Longview Partners (Guernsey) LTD | 4.02% | Reduce -5.3% | 1,307,961 | $466.6M |
| Legal & General Group Plc | 0.12% | Reduce -1.1% | 1,306,915 | $466.3M |
| Charles Schwab Investment Management Inc. | 0.08% | Add +2.4% | 1,284,021 | $458.1M |
| Goldman Sachs Group Inc. | 0.07% | Add +12.0% | 1,258,909 | $449.1M |
| Invesco Ltd. | 0.08% | Add +7.8% | 1,247,865 | $445.2M |
| Cantillon Capital Management LLC | 2.57% | Reduce -2.8% | 1,247,354 | $445.0M |
| UBS Group AG | 0.09% | Reduce -6.5% | 1,219,986 | $435.2M |
| Wellington Management Group LLP | 0.07% | Reduce -9.4% | 1,113,733 | $397.3M |
| Ameriprise Financial Inc. | 0.09% | Add +14.6% | 1,060,628 | $378.4M |
| Nuveen, LLC | 0.10% | Reduce -17.4% | 1,045,223 | $372.9M |
| FIL Ltd | 0.30% | Reduce -7.7% | 991,656 | $353.8M |
| Amundi | 0.12% | Add +18.9% | 989,186 | $347.7M |
| Dimensional Fund Advisors LP | 0.07% | Add +10.3% | 896,498 | $319.8M |
| California Public Employees Retirement System | 0.17% | Reduce -11.5% | 734,499 | $262.0M |
| Two Sigma Advisers, LP | 0.53% | New | 724,400 | $258.4M |
| Altrinsic Global Advisors LLC | 8.95% | Add +193.2% | 692,633 | $247.1M |
| Mackenzie Financial Corp. | 0.32% | Reduce -48.9% | 683,556 | $243.9M |
| Voya Investment Management LLC | 0.28% | Reduce -8.8% | 678,641 | $242.1M |
| First Pacific Advisors, LP | 3.38% | Reduce -4.1% | 652,019 | $232.6M |
| Barclays PLC | 0.09% | Reduce -25.9% | 650,846 | $232.2M |
| Royal Bank of Canada | 0.05% | Reduce -3.3% | 649,827 | $231.8M |
| USS Investment Management Ltd | 1.43% | Add +0.1% | 640,774 | $228.6M |
| Two Sigma Investments, LP | 0.42% | Add +11928.2% | 629,555 | $224.6M |
| T. Rowe Price Associates Inc. | 0.03% | Reduce -6.0% | 621,576 | $221.8M |
| C WorldWide Group Holding A/S | 3.00% | Reduce -14.8% | 620,660 | $221.4M |
| OMERS ADMINISTRATION Corp | 1.69% | No change | 601,417 | $214.6M |
| Swiss National Bank | 0.13% | Add +7.2% | 588,400 | $209.9M |
| Blair William & Co. | 0.56% | Add +2.4% | 567,987 | $202.6M |
| First Trust Advisors LP | 0.16% | Add +6.8% | 552,605 | $197.1M |
| Fiera Capital Corp | 0.63% | Add +15.1% | 521,804 | $186.2M |
| Prana Capital Management, LP | 6.69% | Add +104.9% | 517,507 | $184.6M |
| Sumitomo Mitsui Trust Group, Inc. | 0.10% | Add +2.2% | 463,796 | $165.5M |
| Vontobel Holding Ltd. | 0.54% | Add +276.0% | 460,971 | $164.5M |
| Envestnet Asset Management Inc. | 0.04% | Reduce -7.1% | 428,491 | $152.9M |
| National Pension Service | 0.13% | Add +19.3% | 416,461 | $148.6M |
| Woodline Partners LP | 0.78% | Add +22.7% | 412,953 | $147.3M |
| Deutsche Bank AG | 0.05% | Reduce -12.8% | 410,381 | $146.4M |
| Wells Fargo & Company | 0.03% | Add +1.0% | 406,896 | $145.2M |
| Sei Investments Co. | 0.17% | Reduce -3.4% | 404,969 | $144.5M |
| Douglass Winthrop Advisors, LLC | 2.56% | Add +8.0% | 397,087 | $141.7M |
| Rhumbline Advisers | 0.12% | Add +4.5% | 394,383 | $140.7M |
| Haverford Trust Co | 1.31% | Reduce -0.4% | 385,302 | $137.5M |
| Alyeska Investment Group, L.P. | 0.48% | New | 376,714 | $134.4M |
| Fiducient Advisors LLC | 14.77% | Reduce -20.4% | 338,200 | $120.7M |
| New York State Common Retirement Fund | 0.16% | Add +4.2% | 333,116 | $118.8M |
| Bank of Montreal | 0.06% | Reduce -12.6% | 323,682 | $115.5M |
| NorthCoast Asset Management LLC | 0.48% | Reduce -3.5% | 316,001 | $112.7M |
| California State Teachers Retirement System | 0.12% | Add +0.9% | 312,618 | $111.5M |
| Aviva PLC | 0.23% | Add +24.8% | 311,540 | $111.1M |
| Manufacturers Life Insurance Company, The | 0.10% | Add +142.0% | 311,314 | $111.1M |
| Adage Capital Partners Gp, L.L.C. | 0.18% | Add +76.8% | 302,269 | $107.8M |
| BNP Paribas Financial Markets | 0.08% | Reduce -19.8% | 295,551 | $105.4M |
| Alliancebernstein L.P. | 0.03% | Add +35.2% | 292,210 | $104.2M |
| Russell Investments Group, Ltd. | 0.13% | Add +1.2% | 291,660 | $104.0M |
| T. Rowe Price Investment Management, Inc. | 0.06% | Add +1.2% | 287,915 | $102.7M |
| BloombergSen Inc. | 8.62% | Reduce -1.2% | 286,027 | $102.0M |
| DAVENPORT & Co LLC | 0.54% | Reduce 0.0% | 276,125 | $98.2M |
| Bowie Capital Management, LLC | 4.60% | Add +17.5% | 272,441 | $97.2M |
| DekaBank Deutsche Girozentrale | 0.17% | Add +0.1% | 275,444 | $97.0M |
| Principal Financial Group Inc. | 0.05% | Reduce -1.6% | 261,332 | $93.2M |
| Natixis Advisors, LLC | 0.14% | Reduce -11.4% | 253,905 | $90.6M |
| Verition Fund Management LLC | 0.54% | Add +4.0% | 253,876 | $90.6M |
| Raymond James Financial Inc. | 0.03% | Reduce -7.4% | 252,030 | $89.9M |
| Bristol John W & Co. Inc. | 1.44% | New | 249,542 | $89.0M |
| Lord, Abbett & Co. LLC | 0.30% | Add +1.1% | 245,439 | $87.6M |
| Marshall Wace, LLP | 0.10% | Add +694.0% | 241,619 | $86.2M |
| Ensign Peak Advisors, Inc | 0.15% | Reduce -7.8% | 239,326 | $85.4M |
| Wealthspire Advisors, LLC | 0.47% | Reduce -19.1% | 233,162 | $83.2M |
| Cryder Capital Partners LLP | 4.65% | New | 231,314 | $82.5M |
"% of holder's portfolio" is AON's weight in each manager's 13F, not the share of Aon PLC Class A the manager owns.