Aon plc
AON- Exchange
- NYSE
- Industry
- Insurance Agents, Brokers & Service
- SEC CIK
- 0000315293
In the last 90 days, Aon plc insiders filed 1 open-market purchase and 3 sales; 1,273 institutions reported holding it in 13F filings for Q2 2026, worth $63.9B in total; 4 superinvestors hold it, including Viking Global Investors and Baupost Group.
13F holders, Q4 2025
Institutional positions in Aon plc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 1,289
- +57 vs. Q3 2025
- Shares held
- 189.1M
- +3.31M (+1.8%) vs. Q3 2025
- Total value
- $66.7B
- +$447.9M (+0.7%) vs. Q3 2025
- New holders
- 156
- 425 more added
- Sold out
- 99
- 478 more reduced
23 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting AON on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1,273 | $63.9B |
| Q1 2026 | 1,266 | $60.6B |
| Q4 2025 | 1,289 | $66.7B |
| Q3 2025 | 1,255 | $66.3B |
| Q2 2025 | 1,233 | $69.3B |
| Q1 2025 | 1,276 | $77.1B |
| Q4 2024 | 1,196 | $69.1B |
| Q3 2024 | 1,149 | $66.1B |
| Q2 2024 | 1,111 | $55.4B |
| Q1 2024 | 1,087 | $57.4B |
| Q4 2023 | 1,067 | $49.8B |
| Q3 2023 | 1,049 | $56.4B |
| Q2 2023 | 1,025 | $61.2B |
| Q1 2023 | 1,014 | $55.7B |
| Q4 2022 | 1,034 | $52.6B |
| Q3 2022 | 950 | $48.4B |
| Q2 2022 | 966 | $49.5B |
| Q1 2022 | 985 | $61.2B |
| Q4 2021 | 995 | $56.5B |
| Q3 2021 | 917 | $57.2B |
| Q2 2021 | 912 | $53.4B |
| Q1 2021 | 919 | $51.4B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Czech National Bank | 56,676 | $20.0M | 0.13% | +1,911+3.5% | Added |
| State of Michigan Retirement System | 56,258 | $19.9M | 0.10% | −2,100−3.6% | Reduced |
| Picton Mahoney Asset Management | 56,124 | $19.8M | 0.22% | +535+1.0% | Added |
| Qube Research & Technologies Ltd | 54,770 | $19.3M | 0.03% | −55,517−50.3% | Reduced |
| Public Sector Pension Investment Board | 54,744 | $19.3M | 0.07% | +8,214+17.7% | Added |
| Xponance, Inc. | 54,582 | $19.3M | 0.14% | +4,019+7.9% | Added |
| MUFG Securities EMEA plc | 54,511 | $19.2M | 0.22% | +50,384+1,220.8% | Added |
| Abner Herrman & Brock LLC | 54,155 | $19.1M | 1.95% | −1,126−2.0% | Reduced |
| Nisa Investment Advisors, LLC | 53,802 | $19.0M | 0.06% | +2,893+5.7% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 52,665 | $18.6M | 0.02% | +52,665 | New |
| Caisse de Depot Et Placement du Quebec | 51,114 | $18.0M | 0.03% | −20,154−28.3% | Reduced |
| Ilmarinen Mutual Pension Insurance Co | 50,272 | $17.7M | 0.14% | +35,000+229.2% | Added |
| Cullen/Frost Bankers, Inc. | 50,223 | $17.7M | 0.19% | +1,920+4.0% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 49,995 | $17.6M | 0.09% | −1,785−3.4% | Reduced |
| Global Frontier Investments LLC | 49,000 | $17.3M | 3.41% | 00.0% | Unchanged |
| CIBC World Markets Inc. | 48,938 | $17.3M | 0.03% | −59−0.1% | Reduced |
| Mariner, LLC | 48,617 | $17.2M | 0.02% | +7,097+17.1% | Added |
| Glenmede Trust Co NA | 48,468 | $17.1M | 0.08% | +48,468 | New |
| Bank of Nova Scotia | 48,067 | $17.0M | 0.03% | −11,107−18.8% | Reduced |
| Forsta Ap-Fonden | 47,960 | $16.9M | 0.10% | −40−0.1% | Reduced |
| Cerity Partners LLC | 47,193 | $16.7M | 0.02% | +6,794+16.8% | Added |
| Varma Mutual Pension Insurance Co | 46,100 | $16.3M | 0.10% | +5,100+12.4% | Added |
| Amalgamated Bank | 45,751 | $16.1M | 0.12% | −2,524−5.2% | Reduced |
| Retirement Systems of Alabama | 45,725 | $16.1M | 0.05% | −271−0.6% | Reduced |
| ProShare Advisors LLC | 45,369 | $16.0M | 0.03% | +2,098+4.8% | Added |
| Kornitzer Capital Management Inc | 44,866 | $15.8M | 0.33% | 00.0% | Unchanged |
| Brinker Capital Investments, LLC | 43,322 | $15.3M | 0.11% | −8,640−16.6% | Reduced |
| Capital Group Private Client Services, Inc. | 42,571 | $15.0M | 0.24% | −2,216−4.9% | Reduced |
| D. E. Shaw & Co., Inc. | 42,435 | $15.0M | 0.01% | −36,805−46.4% | Reduced |
| HighTower Advisors, LLC | 42,030 | $14.8M | 0.02% | +1,065+2.6% | Added |
| GM Advisory Group, Inc. | 41,789 | $14.7M | 0.58% | +80+0.2% | Added |
| Allianz Asset Management GmbH | 41,747 | $14.7M | 0.02% | +27,565+194.4% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 41,496 | $14.6M | 0.02% | −26,040−38.6% | Reduced |
| DnB Asset Management AS | 41,361 | $14.6M | 0.05% | +1,878+4.8% | Added |
| Artemis Investment Management LLP | 41,229 | $14.5M | 0.18% | +400+1.0% | Added |
| Hantz Financial Services, Inc. | 40,270 | $14.2M | 0.21% | −8,124−16.8% | Reduced |
| Stephens Inc | 40,256 | $14.2M | 0.18% | +34+0.1% | Added |
| Corsair Capital Management, L.P. | 40,101 | $14.2M | 2.34% | +355+0.9% | Added |
| Creative Planning | 40,030 | $14.1M | 0.01% | +7,934+24.7% | Added |
| IFM Investors Pty Ltd | 39,539 | $14.0M | 0.12% | +39,539 | New |
| Pathstone Holdings, LLC | 38,938 | $13.7M | 0.05% | +1,525+4.1% | Added |
| First Trust Advisors LP | 38,917 | $13.7M | 0.01% | −524,060−93.1% | Reduced |
| Entropy Technologies, LP | 38,629 | $13.6M | 0.74% | +29,851+340.1% | Added |
| Prudential Financial Inc | 37,861 | $13.4M | 0.02% | +3,080+8.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 37,552 | $13.3M | 0.04% | +6,509+21.0% | Added |
| KBC Group NV | 36,782 | $13.0M | 0.03% | +549+1.5% | Added |
| British Columbia Investment Management Corp | 36,348 | $12.8M | 0.07% | +6,866+23.3% | Added |
| Marshall Wace, LLP | 35,374 | $12.5M | 0.01% | +472+1.4% | Added |
| 1832 Asset Management L.P. | 34,914 | $12.3M | 0.02% | −3,083−8.1% | Reduced |
| Utah Retirement Systems | 34,698 | $12.2M | 0.12% | 00.0% | Unchanged |
| Sone Capital Management, LLC | 34,302 | $12.1M | 0.98% | −23,859−41.0% | Reduced |
| Zevin Asset Management LLC | 34,010 | $12.0M | 1.61% | +1,531+4.7% | Added |
| Daiwa Securities Group Inc. | 34,010 | $12.0M | 0.04% | +1,044+3.2% | Added |
| NEOS Investment Management LLC | 33,800 | $11.9M | 0.07% | +2,591+8.3% | Added |
| Capital International Ltd | 33,444 | $11.8M | 0.42% | −8,810−20.9% | Reduced |
| Tower Bridge Advisors | 33,362 | $11.8M | 1.19% | −1,920−5.4% | Reduced |
| Premier Fund Managers Ltd | 32,828 | $11.7M | 0.67% | −3,000−8.4% | Reduced |
| Oppenheimer Asset Management Inc. | 32,952 | $11.6M | 0.14% | −11,073−25.2% | Reduced |
| Borer Denton & Associates, Inc. | 32,944 | $11.6M | 3.92% | −168−0.5% | Reduced |
| PBU - The Pension Fund of Early Childhood & Youth Educators | 32,861 | $11.6M | 0.17% | +32,861 | New |
| Factory Mutual Insurance Co | 32,700 | $11.5M | 0.12% | −18,300−35.9% | Reduced |
| Hudson Bay Capital Management LP | 32,508 | $11.5M | 0.07% | +3,395+11.7% | Added |
| Wealth Enhancement Advisory Services, LLC | 32,664 | $11.4M | 0.02% | −40,787−55.5% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 32,218 | $11.4M | 0.09% | −1,572−4.7% | Reduced |
| US Bancorp | 31,468 | $11.1M | 0.01% | +111+0.4% | Added |
| Captrust Financial Advisors | 31,191 | $11.0M | 0.02% | +5,701+22.4% | Added |
| Cercano Management LLC | 30,352 | $10.7M | 0.41% | +30,352 | New |
| Peapack Gladstone Financial Corp | 30,178 | $10.7M | 0.13% | −149−0.5% | Reduced |
| Williams Jones Wealth Management, LLC. | 29,577 | $10.4M | 0.12% | −6,220−17.4% | Reduced |
| Beese Fulmer Investment Management, Inc. | 29,544 | $10.4M | 0.68% | +1,567+5.6% | Added |
| Baird Financial Group, Inc. | 29,329 | $10.3M | 0.02% | +825+2.9% | Added |
| Motco | 29,073 | $10.3M | 0.93% | +110+0.4% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 28,366 | $10.0M | 0.08% | +513+1.8% | Added |
| Macquarie Group Ltd | 28,298 | $9.99M | 0.04% | +1,889+7.2% | Added |
| American Century Companies Inc | 28,291 | $9.98M | 0.01% | +876+3.2% | Added |
| Elo Mutual Pension Insurance Co | 28,192 | $9.95M | 0.15% | +949+3.5% | Added |
| JustInvest LLC | 28,002 | $9.88M | 0.10% | +437+1.6% | Added |
| Motley Fool Asset Management LLC | 27,819 | $9.82M | 0.38% | −1,064−3.7% | Reduced |
| Boston Common Asset Management, LLC | 27,617 | $9.75M | 0.59% | −11,748−29.8% | Reduced |
| Cetera Investment Advisers | 27,494 | $9.70M | 0.01% | +332+1.2% | Added |
| Ieq Capital, LLC | 27,347 | $9.65M | 0.03% | +15,108+123.4% | Added |
| Susquehanna International Group, LLP | 27,097 | $9.56M | 0.01% | −32,209−54.3% | Reduced |
| State of Alaska, Department of Revenue | 27,065 | $9.55M | 0.10% | −2,205−7.5% | Reduced |
| Engineers Gate Manager LP | 26,552 | $9.37M | 0.11% | −29,663−52.8% | Reduced |
| GHP Investment Advisors, Inc. | 26,518 | $9.36M | 0.38% | −117−0.4% | Reduced |
| M&T Bank Corp | 26,503 | $9.35M | 0.03% | +725+2.8% | Added |
| Fayez Sarofim & Co | 26,336 | $9.29M | 0.02% | +8,297+46.0% | Added |
| Cornerstone Advisors, LLC | 25,800 | $9.10M | 0.30% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 25,794 | $9.10M | 0.03% | −74−0.3% | Reduced |
| Commonwealth Equity Services, LLC | 25,768 | $9.09M | 0.01% | −138−0.5% | Reduced |
| First Manhattan Co | 25,456 | $8.98M | 0.02% | −1,326−5.0% | Reduced |
| Yousif Capital Management, LLC | 26,370 | $8.95M | 0.10% | −1,506−5.4% | Reduced |
| Mediolanum International Funds Ltd | 24,700 | $8.81M | 0.09% | +9,556+63.1% | Added |
| Susquehanna Fundamental Investments, LLC | 24,892 | $8.78M | 0.30% | +10,429+72.1% | Added |
| Citizens Financial Group Inc | 24,633 | $8.69M | 0.12% | −1,151−4.5% | Reduced |
| Oregon Public Employees Retirement Fund | 24,595 | $8.68M | 0.11% | −100−0.4% | Reduced |
| YHB Investment Advisors, Inc. | 24,535 | $8.66M | 0.60% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 24,351 | $8.59M | 0.00% | −290,240−92.3% | Reduced |
| Fifth Third Bancorp | 24,313 | $8.58M | 0.03% | −672−2.7% | Reduced |
| Old National Bancorp | 24,300 | $8.57M | 0.14% | +3,339+15.9% | Added |