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, Q3 2025
Institutional positions in Aon plc as of Sep 30, 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
- 1,255
- +42 vs. Q2 2025
- Shares held
- 186.0M
- −1.74M (−0.9%) vs. Q2 2025
- Total value
- $66.3B
- −$638.0M (−1.0%) vs. Q2 2025
- New holders
- 127
- 477 more added
- Sold out
- 85
- 401 more reduced
20 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Border to Coast Pensions Partnership Ltd | 102,557 | $36.6M | 0.64% | 00.0% | Unchanged |
| Ironvine Capital Partners, LLC | 105,375 | $37.6M | 3.74% | −371−0.4% | Reduced |
| APG Asset Management N.V. | 124,403 | $37.8M | 0.11% | −697−0.6% | Reduced |
| HRT Financial LP | 105,943 | $37.8M | 0.14% | +105,943 | New |
| Broad Run Investment Management, LLC | 106,617 | $38.0M | 6.22% | −6,620−5.8% | Reduced |
| Night Owl Capital Management, LLC | 107,023 | $38.2M | 4.16% | +938+0.9% | Added |
| M.D. Sass Investors Services, Inc. | 107,298 | $38.3M | 3.12% | −3,707−3.3% | Reduced |
| Ceredex Value Advisors LLC | 107,773 | $38.4M | 0.89% | −28,340−20.8% | Reduced |
| Spears Abacus Advisors LLC | 108,113 | $38.6M | 0.73% | −210−0.2% | Reduced |
| State of Wisconsin Investment Board | 109,443 | $39.0M | 0.09% | +3,737+3.5% | Added |
| Colony Group, LLC | 110,111 | $39.2M | 0.06% | +10,062+10.1% | Added |
| Qube Research & Technologies Ltd | 110,287 | $39.3M | 0.06% | −114,495−50.9% | Reduced |
| Summit Trail Advisors, LLC | 112,301 | $40.0M | 0.55% | −2,074−1.8% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 113,136 | $40.3M | 0.11% | −3,999−3.4% | Reduced |
| Ninety One UK Ltd | 114,062 | $40.7M | 0.09% | +56,113+96.8% | Added |
| AQR Capital Management LLC | 114,388 | $40.7M | 0.03% | +72,263+171.5% | Added |
| Schonfeld Strategic Advisors LLC | 115,509 | $41.2M | 0.29% | +43,733+60.9% | Added |
| The PNC Financial Services Group, Inc. | 117,837 | $42.0M | 0.03% | +3,119+2.7% | Added |
| Danske Bank A/S | 117,932 | $42.1M | 0.10% | +13,050+12.4% | Added |
| TCTC Holdings, LLC | 120,061 | $42.8M | 1.27% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 120,648 | $43.0M | 0.39% | +118,047+4,538.5% | Added |
| Toroso Investments, LLC | 121,059 | $43.2M | 0.18% | +7,402+6.5% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 121,336 | $43.3M | 0.10% | +5,894+5.1% | Added |
| Korea Investment CORP | 125,553 | $44.8M | 0.09% | +20,043+19.0% | Added |
| Davis R M Inc | 126,242 | $45.0M | 0.79% | +986+0.8% | Added |
| AMF Pensionsforsakring AB | 126,792 | $45.2M | 0.29% | 00.0% | Unchanged |
| Markel Group Inc.SuperinvestorMarkel Group | 129,800 | $46.3M | 0.38% | 00.0% | Unchanged |
| HM Payson & Co | 133,021 | $47.4M | 0.68% | −485−0.4% | Reduced |
| State of Tennessee, Treasury Department | 134,987 | $48.1M | 0.16% | +2,929+2.2% | Added |
| Petrus Trust Company, LTA | 136,513 | $48.7M | 5.33% | +16,928+14.2% | Added |
| Frontier Capital Management Co LLC | 139,453 | $49.7M | 0.45% | −47,391−25.4% | Reduced |
| Gillson Capital LP | 140,661 | $50.2M | 4.35% | +49,780+54.8% | Added |
| Stifel Financial Corp | 143,574 | $51.2M | 0.05% | −740−0.5% | Reduced |
| Storebrand Asset Management AS | 144,362 | $51.5M | 0.14% | +455+0.3% | Added |
| Ninety One North America, Inc. | 145,307 | $51.8M | 2.35% | +30,522+26.6% | Added |
| Ycg, LLC | 151,264 | $53.9M | 4.05% | +5,072+3.5% | Added |
| Standard Life Aberdeen plc | 156,191 | $55.4M | 0.09% | +4,005+2.6% | Added |
| New York State Teachers Retirement System | 155,822 | $55.6M | 0.11% | −558−0.4% | Reduced |
| CIBC Asset Management Inc | 159,912 | $57.0M | 0.16% | −19,677−11.0% | Reduced |
| National Bank of Canada | 161,524 | $57.6M | 0.07% | −67,679−29.5% | Reduced |
| GFI Investment Counsel Ltd. | 167,596 | $59.8M | 6.22% | +986+0.6% | Added |
| Nomura Asset Management Co Ltd | 167,632 | $59.8M | 0.16% | −7,072−4.0% | Reduced |
| Gluskin Sheff & Assoc Inc | 169,774 | $60.5M | 7.65% | +12,388+7.9% | Added |
| Arrowstreet Capital, Limited Partnership | 177,085 | $63.1M | 0.04% | +98,332+124.9% | Added |
| Nicholas Company, Inc. | 181,427 | $64.7M | 1.10% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 182,053 | $64.9M | 0.14% | +182,053 | New |
| HSBC Holdings PLC | 184,789 | $65.6M | 0.04% | +16,030+9.5% | Added |
| State Board of Administration of Florida Retirement System | 185,182 | $66.0M | 0.12% | −4,440−2.3% | Reduced |
| CapitalatWork S.A. | 192,218 | $68.5M | 1.99% | +13,493+7.5% | Added |
| Jane Street Group, LLC | 202,749 | $72.3M | 0.08% | +164,962+436.6% | Added |
| Verition Fund Management LLC | 205,731 | $73.4M | 0.42% | −48,145−19.0% | Reduced |
| Moore Capital Management, LP | 212,192 | $75.7M | 1.50% | +11,168+5.6% | Added |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 213,450 | $76.1M | 4.13% | 00.0% | Unchanged |
| Scharf Investments, LLC | 220,088 | $78.5M | 1.97% | −9,366−4.1% | Reduced |
| Wealthspire Advisors, LLC | 230,857 | $82.3M | 0.43% | −2,305−1.0% | Reduced |
| Ensign Peak Advisors, Inc | 230,883 | $82.3M | 0.14% | −8,443−3.5% | Reduced |
| Cryder Capital Partners LLP | 231,314 | $82.5M | 4.55% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 235,760 | $84.1M | 0.03% | −56,450−19.3% | Reduced |
| BNP Paribas Arbitrage, SA | 236,768 | $84.4M | 0.07% | −58,783−19.9% | Reduced |
| Citigroup Inc | 239,320 | $85.3M | 0.06% | +42,656+21.7% | Added |
| Bristol John W & Co Inc | 244,744 | $87.3M | 1.38% | −4,798−1.9% | Reduced |
| Manufacturers Life Insurance Company, The | 247,422 | $88.2M | 0.07% | −63,892−20.5% | Reduced |
| Alyeska Investment Group, L.P. | 247,977 | $88.4M | 0.27% | −128,737−34.2% | Reduced |
| Lord, Abbett & Co. LLC | 249,168 | $88.8M | 0.26% | +3,729+1.5% | Added |
| Principal Financial Group Inc | 256,631 | $91.5M | 0.05% | −4,701−1.8% | Reduced |
| Assenagon Asset Management S.A. | 258,654 | $92.2M | 0.14% | +85,047+49.0% | Added |
| Raymond James Financial Inc | 260,387 | $92.8M | 0.03% | +8,357+3.3% | Added |
| Fiducient Advisors LLC | 265,167 | $94.6M | 11.05% | −73,033−21.6% | Reduced |
| Davenport & Co LLC | 271,892 | $96.8M | 0.52% | −4,233−1.5% | Reduced |
| DekaBank Deutsche Girozentrale | 275,444 | $97.3M | 0.16% | 00.0% | Unchanged |
| Woodline Partners LP | 280,085 | $99.9M | 0.47% | −132,868−32.2% | Reduced |
| BloombergSen Inc. | 283,084 | $100.9M | 8.57% | −2,943−1.0% | Reduced |
| Russell Investments Group, Ltd. | 293,677 | $104.7M | 0.12% | +2,017+0.7% | Added |
| Janus Henderson Group PLC | 314,591 | $112.2M | 0.05% | +155,974+98.3% | Added |
| New York State Common Retirement Fund | 318,096 | $113.4M | 0.15% | −15,020−4.5% | Reduced |
| California State Teachers Retirement System | 325,574 | $116.1M | 0.12% | +12,956+4.1% | Added |
| Aviva PLC | 326,832 | $116.5M | 0.21% | +15,292+4.9% | Added |
| Prana Capital Management, LP | 340,562 | $121.4M | 4.05% | −176,945−34.2% | Reduced |
| Natixis Advisors, L.P. | 355,826 | $126.9M | 0.19% | +101,921+40.1% | Added |
| Bowie Capital Management, LLC | 356,887 | $127.3M | 5.73% | +84,446+31.0% | Added |
| Kovitz Investment Group Partners, LLC | 358,759 | $127.9M | 0.50% | +42,758+13.5% | Added |
| SEI Investments Co | 371,158 | $132.3M | 0.14% | −33,811−8.3% | Reduced |
| Wells Fargo & Company | 371,868 | $132.6M | 0.03% | −35,028−8.6% | Reduced |
| Haverford Trust Co | 380,085 | $135.5M | 1.22% | −5,217−1.4% | Reduced |
| Rhumbline Advisers | 395,039 | $140.9M | 0.11% | +656+0.2% | Added |
| Douglass Winthrop Advisors, LLC | 401,900 | $143.3M | 2.50% | +4,813+1.2% | Added |
| Bank of Montreal | 406,652 | $145.0M | 0.06% | +82,970+25.6% | Added |
| Envestnet Asset Management Inc | 413,491 | $147.4M | 0.04% | −15,000−3.5% | Reduced |
| National Pension Service | 420,423 | $149.9M | 0.12% | +3,962+1.0% | Added |
| Wellington Management Group LLP | 445,208 | $158.8M | 0.03% | −668,525−60.0% | Reduced |
| Mackenzie Financial Corp | 461,268 | $164.5M | 0.20% | −222,288−32.5% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 488,037 | $174.0M | 0.10% | +24,241+5.2% | Added |
| Millennium Management LLC | 496,586 | $177.1M | 0.14% | +489,463+6,871.6% | Added |
| C WorldWide Group Holding A/S | 517,308 | $184.5M | 2.84% | −103,352−16.7% | Reduced |
| Blair William & Co | 529,773 | $188.9M | 0.50% | −38,214−6.7% | Reduced |
| Fiera Capital Corp | 549,334 | $195.9M | 0.63% | +27,530+5.3% | Added |
| Voya Investment Management LLC | 560,753 | $200.0M | 0.20% | −117,888−17.4% | Reduced |
| First Trust Advisors LP | 562,977 | $200.7M | 0.15% | +10,372+1.9% | Added |
| FMR LLC | 583,344 | $208.0M | 0.01% | −874,384−60.0% | Reduced |
| Swiss National Bank | 591,300 | $210.8M | 0.12% | +2,900+0.5% | Added |