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, Q1 2026
Institutional positions in Aon plc as of Mar 31, 2026. 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
- 1,266
- −3 vs. Q4 2025
- Shares held
- 187.6M
- +22.2M (+13.4%) vs. Q4 2025
- Total value
- $60.6B
- +$2.27B (+3.9%) vs. Q4 2025
- New holders
- 142
- 485 more added
- Sold out
- 145
- 417 more reduced
20 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Citigroup Inc | 250,447 | $80.8M | 0.05% | +28,022+12.6% | Added |
| New York State Common Retirement Fund | 244,232 | $78.8M | 0.11% | +1,600+0.7% | Added |
| Alliancebernstein L.P. | 220,323 | $77.7M | 0.03% | +1,828+0.8% | Added |
| Raymond James Financial Inc | 234,621 | $75.7M | 0.02% | −12,024−4.9% | Reduced |
| Verition Fund Management LLC | 228,209 | $73.7M | 0.71% | +20,647+9.9% | Added |
| Quantinno Capital Management LP | 225,807 | $72.9M | 0.12% | +109,492+94.1% | Added |
| Balyasny Asset Management LLC | 224,321 | $72.4M | 0.14% | −162,692−42.0% | Reduced |
| Ensign Peak Advisors, Inc | 223,178 | $72.0M | 0.13% | +16,693+8.1% | Added |
| Adage Capital Partners GP, L.L.C. | 222,169 | $71.7M | 0.11% | −384,400−63.4% | Reduced |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 213,860 | $69.0M | 4.82% | −4,875−2.2% | Reduced |
| Fiducient Advisors LLC | 183,310 | $59.2M | 7.73% | +63,720+53.3% | Added |
| State Board of Administration of Florida Retirement System | 181,412 | $58.6M | 0.11% | 00.0% | Unchanged |
| Nicholas Company, Inc. | 181,227 | $58.5M | 1.15% | −175−0.1% | Reduced |
| Teacher Retirement System of Texas | 180,893 | $58.4M | 0.24% | +68,612+61.1% | Added |
| Eminence Capital, LP | 179,019 | $57.8M | 1.32% | +179,019 | New |
| Ninety One North America, Inc. | 175,559 | $56.7M | 2.54% | −926−0.5% | Reduced |
| Nomura Asset Management Co Ltd | 174,425 | $56.3M | 0.15% | +6,579+3.9% | Added |
| Korea Investment CORP | 168,112 | $54.3M | 0.11% | +64,173+61.7% | Added |
| Mackenzie Financial Corp | 166,498 | $53.7M | 0.06% | −162,203−49.3% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 159,373 | $51.4M | 0.08% | +117,877+284.1% | Added |
| Standard Life Aberdeen plc | 158,598 | $51.2M | 0.08% | +5,309+3.5% | Added |
| GFI Investment Counsel Ltd. | 157,437 | $50.8M | 6.95% | −9,725−5.8% | Reduced |
| New York State Teachers Retirement System | 155,300 | $50.1M | 0.10% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 153,379 | $49.5M | 0.17% | +14,578+10.5% | Added |
| Petrus Trust Company, LTA | 153,300 | $49.5M | 5.41% | +9,300+6.5% | Added |
| Stifel Financial Corp | 149,135 | $48.1M | 0.04% | +4,703+3.3% | Added |
| Zurich Insurance Group Ltd | 148,305 | $47.9M | 0.38% | +23,416+18.7% | Added |
| Ycg, LLC | 147,010 | $47.5M | 4.30% | −4,433−2.9% | Reduced |
| Intech Investment Management LLC | 144,445 | $46.6M | 0.46% | −11,810−7.6% | Reduced |
| M.D. Sass Investors Services, Inc. | 142,362 | $46.0M | 3.48% | +33,831+31.2% | Added |
| Man Group plc | 139,252 | $44.9M | 0.09% | +123,431+780.2% | Added |
| Ninety One UK Ltd | 137,569 | $44.4M | 0.10% | −654−0.5% | Reduced |
| Storebrand Asset Management AS | 137,534 | $44.4M | 0.13% | −5,051−3.5% | Reduced |
| Markel Group Inc.SuperinvestorMarkel Group | 135,800 | $43.8M | 0.37% | +1,750+1.3% | Added |
| National Bank of Canada | 135,728 | $43.8M | 0.04% | +74,202+120.6% | Added |
| Nippon Life Global Investors Americas, Inc. | 130,660 | $42.2M | 1.90% | +31,690+32.0% | Added |
| D. E. Shaw & Co., Inc. | 128,323 | $41.4M | 0.03% | +85,888+202.4% | Added |
| Davis R M Inc | 127,830 | $41.3M | 0.73% | +1,335+1.1% | Added |
| LFL Advisers, LLC | 126,666 | $40.9M | 12.30% | +34,009+36.7% | Added |
| AMF Pensionsforsakring AB | 122,843 | $39.7M | 0.26% | +3,377+2.8% | Added |
| HM Payson & Co | 122,238 | $39.5M | 0.57% | −2,725−2.2% | Reduced |
| Danske Bank A/S | 120,577 | $38.9M | 0.09% | −483−0.4% | Reduced |
| Voya Investment Management LLC | 120,463 | $38.9M | 0.04% | −345,753−74.2% | Reduced |
| TCTC Holdings, LLC | 120,000 | $38.7M | 1.10% | −161−0.1% | Reduced |
| 1832 Asset Management L.P. | 119,568 | $38.6M | 0.05% | +84,654+242.5% | Added |
| Schroder Investment Management Group | 118,198 | $38.3M | 0.03% | +44,269+59.9% | Added |
| Voloridge Investment Management, LLC | 114,974 | $37.1M | 0.15% | +114,974 | New |
| Schonfeld Strategic Advisors LLC | 114,003 | $36.8M | 0.30% | +42,629+59.7% | Added |
| State of Wisconsin Investment Board | 111,288 | $35.9M | 0.08% | +3,029+2.8% | Added |
| Toroso Investments, LLC | 111,064 | $35.8M | 0.11% | +30,774+38.3% | Added |
| Spears Abacus Advisors LLC | 109,902 | $35.5M | 0.70% | −947−0.9% | Reduced |
| Night Owl Capital Management, LLC | 109,488 | $35.3M | 4.12% | +714+0.7% | Added |
| Chevy Chase Trust Holdings, Inc. | 108,749 | $35.1M | 0.10% | −3,309−3.0% | Reduced |
| Ironvine Capital Partners, LLC | 107,688 | $34.8M | 3.82% | +80.0% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 107,509 | $34.7M | 0.09% | −963−0.9% | Reduced |
| Gillson Capital LP | 102,720 | $33.2M | 2.72% | −86,280−45.7% | Reduced |
| Woodline Partners LP | 102,369 | $33.0M | 0.12% | −154,012−60.1% | Reduced |
| LPL Financial LLC | 102,111 | $33.0M | 0.01% | +26,621+35.3% | Added |
| Vanguard Investments Australia, Ltd. | 102,047 | $32.9M | 0.10% | +102,047 | New |
| Broad Run Investment Management, LLC | 101,157 | $32.7M | 5.75% | −5,410−5.1% | Reduced |
| Capital International Inc | 98,915 | $31.9M | 0.25% | +10,455+11.8% | Added |
| Obermeyer Wood Investment Counsel, LLLP | 98,353 | $31.7M | 1.46% | +110.0% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 98,090 | $31.7M | 0.07% | +448+0.5% | Added |
| KLP Kapitalforvaltning AS | 97,952 | $31.6M | 0.12% | +4,280+4.6% | Added |
| APG Asset Management N.V. | 112,043 | $31.4M | 0.10% | −2,160−1.9% | Reduced |
| Gateway Investment Advisers LLC | 96,683 | $31.2M | 0.35% | +2,987+3.2% | Added |
| Asset Management One Co.,Ltd. | 94,239 | $30.4M | 0.09% | −306−0.3% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 93,305 | $30.1M | 0.16% | +31,940+52.0% | Added |
| Gluskin Sheff & Assoc Inc | 92,519 | $29.9M | 4.97% | −27,136−22.7% | Reduced |
| Wellington Management Group LLP | 91,374 | $29.5M | 0.01% | +7,147+8.5% | Added |
| The PNC Financial Services Group, Inc. | 90,965 | $29.4M | 0.02% | −23,832−20.8% | Reduced |
| Capitolis Liquid Global Markets LLC | 90,429 | $29.2M | 0.19% | +90,429 | New |
| Summit Trail Advisors, LLC | 90,234 | $29.1M | 0.42% | +4,206+4.9% | Added |
| Pictet Asset Management Holding SA | 89,972 | $29.0M | 0.03% | −3,994−4.3% | Reduced |
| Treasurer of the State of North Carolina | 89,894 | $29.0M | 0.09% | +1,919+2.2% | Added |
| Gotham Asset Management, LLC | 88,805 | $28.7M | 0.09% | +7,296+9.0% | Added |
| Dudley & Shanley, Inc. | 88,782 | $28.7M | 4.69% | 00.0% | Unchanged |
| Royal London Asset Management Ltd | 88,381 | $28.5M | 0.06% | +2,387+2.8% | Added |
| Swedbank AB | 87,464 | $28.2M | 0.03% | +55+0.1% | Added |
| Advisors Capital Management, LLC | 86,431 | $27.9M | 0.33% | −3,922−4.3% | Reduced |
| Public Employees Retirement System of Ohio | 84,942 | $27.4M | 0.09% | +279+0.3% | Added |
| TD Asset Management Inc | 80,527 | $26.0M | 0.02% | +2,366+3.0% | Added |
| Assetmark, Inc | 80,499 | $26.0M | 0.05% | +67,178+504.3% | Added |
| Citadel Advisors LLC | 80,300 | $25.9M | 0.02% | −361,986−81.8% | Reduced |
| Central Securities Corp | 80,000 | $25.8M | 2.13% | −20,000−20.0% | Reduced |
| SG Americas Securities, LLC | 78,916 | $25.5M | 0.03% | −64,247−44.9% | Reduced |
| Mariner, LLC | 77,401 | $25.0M | 0.03% | +28,784+59.2% | Added |
| CIBC Bancorp USA Inc. | 75,189 | $24.3M | 0.03% | +75,189 | New |
| Mn Services Vermogensbeheer B.V. | 74,486 | $24.0M | 0.16% | −1,200−1.6% | Reduced |
| Capital International Sarl | 72,301 | $23.3M | 0.38% | +5,660+8.5% | Added |
| Squarepoint Ops LLC | 71,935 | $23.2M | 0.05% | +66,207+1,155.8% | Added |
| Managed Asset Portfolios, LLC | 71,613 | $23.1M | 2.77% | +13,782+23.8% | Added |
| Susquehanna Fundamental Investments, LLC | 71,538 | $23.1M | 0.87% | +46,646+187.4% | Added |
| State of New Jersey Common Pension Fund D | 70,259 | $22.7M | 0.09% | −1,034−1.5% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 69,198 | $22.3M | 0.12% | +247+0.4% | Added |
| CIBC Asset Management Inc | 68,971 | $22.3M | 0.05% | −20,629−23.0% | Reduced |
| STRS Ohio | 68,808 | $22.2M | 0.09% | +3,226+4.9% | Added |
| Cerity Partners LLC | 67,369 | $21.7M | 0.03% | +20,176+42.8% | Added |
| Handelsbanken Fonder AB | 66,913 | $21.6M | 0.07% | −121−0.2% | Reduced |
| SEB Asset Management AB | 66,899 | $21.6M | 0.09% | +66,899 | New |