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 |
|---|---|---|---|---|---|
| Gateway Investment Advisers LLC | 96,683 | $31.2M | 0.35% | +2,987+3.2% | Added |
| APG Asset Management N.V. | 112,043 | $31.4M | 0.10% | −2,160−1.9% | Reduced |
| KLP Kapitalforvaltning AS | 97,952 | $31.6M | 0.12% | +4,280+4.6% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 98,090 | $31.7M | 0.07% | +448+0.5% | Added |
| Obermeyer Wood Investment Counsel, LLLP | 98,353 | $31.7M | 1.46% | +110.0% | Added |
| Capital International Inc | 98,915 | $31.9M | 0.25% | +10,455+11.8% | Added |
| Broad Run Investment Management, LLC | 101,157 | $32.7M | 5.75% | −5,410−5.1% | Reduced |
| Vanguard Investments Australia, Ltd. | 102,047 | $32.9M | 0.10% | +102,047 | New |
| LPL Financial LLC | 102,111 | $33.0M | 0.01% | +26,621+35.3% | Added |
| Woodline Partners LP | 102,369 | $33.0M | 0.12% | −154,012−60.1% | Reduced |
| Gillson Capital LP | 102,720 | $33.2M | 2.72% | −86,280−45.7% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 107,509 | $34.7M | 0.09% | −963−0.9% | Reduced |
| Ironvine Capital Partners, LLC | 107,688 | $34.8M | 3.82% | +80.0% | Added |
| Chevy Chase Trust Holdings, Inc. | 108,749 | $35.1M | 0.10% | −3,309−3.0% | Reduced |
| Night Owl Capital Management, LLC | 109,488 | $35.3M | 4.12% | +714+0.7% | Added |
| Spears Abacus Advisors LLC | 109,902 | $35.5M | 0.70% | −947−0.9% | Reduced |
| Toroso Investments, LLC | 111,064 | $35.8M | 0.11% | +30,774+38.3% | Added |
| State of Wisconsin Investment Board | 111,288 | $35.9M | 0.08% | +3,029+2.8% | Added |
| Schonfeld Strategic Advisors LLC | 114,003 | $36.8M | 0.30% | +42,629+59.7% | Added |
| Voloridge Investment Management, LLC | 114,974 | $37.1M | 0.15% | +114,974 | New |
| Schroder Investment Management Group | 118,198 | $38.3M | 0.03% | +44,269+59.9% | Added |
| 1832 Asset Management L.P. | 119,568 | $38.6M | 0.05% | +84,654+242.5% | Added |
| TCTC Holdings, LLC | 120,000 | $38.7M | 1.10% | −161−0.1% | Reduced |
| Voya Investment Management LLC | 120,463 | $38.9M | 0.04% | −345,753−74.2% | Reduced |
| Danske Bank A/S | 120,577 | $38.9M | 0.09% | −483−0.4% | Reduced |
| HM Payson & Co | 122,238 | $39.5M | 0.57% | −2,725−2.2% | Reduced |
| AMF Pensionsforsakring AB | 122,843 | $39.7M | 0.26% | +3,377+2.8% | Added |
| LFL Advisers, LLC | 126,666 | $40.9M | 12.30% | +34,009+36.7% | Added |
| Davis R M Inc | 127,830 | $41.3M | 0.73% | +1,335+1.1% | Added |
| D. E. Shaw & Co., Inc. | 128,323 | $41.4M | 0.03% | +85,888+202.4% | Added |
| Nippon Life Global Investors Americas, Inc. | 130,660 | $42.2M | 1.90% | +31,690+32.0% | Added |
| National Bank of Canada | 135,728 | $43.8M | 0.04% | +74,202+120.6% | Added |
| Markel Group Inc.SuperinvestorMarkel Group | 135,800 | $43.8M | 0.37% | +1,750+1.3% | Added |
| Storebrand Asset Management AS | 137,534 | $44.4M | 0.13% | −5,051−3.5% | Reduced |
| Ninety One UK Ltd | 137,569 | $44.4M | 0.10% | −654−0.5% | Reduced |
| Man Group plc | 139,252 | $44.9M | 0.09% | +123,431+780.2% | Added |
| M.D. Sass Investors Services, Inc. | 142,362 | $46.0M | 3.48% | +33,831+31.2% | Added |
| Intech Investment Management LLC | 144,445 | $46.6M | 0.46% | −11,810−7.6% | Reduced |
| Ycg, LLC | 147,010 | $47.5M | 4.30% | −4,433−2.9% | Reduced |
| Zurich Insurance Group Ltd | 148,305 | $47.9M | 0.38% | +23,416+18.7% | Added |
| Stifel Financial Corp | 149,135 | $48.1M | 0.04% | +4,703+3.3% | Added |
| Petrus Trust Company, LTA | 153,300 | $49.5M | 5.41% | +9,300+6.5% | Added |
| State of Tennessee, Treasury Department | 153,379 | $49.5M | 0.17% | +14,578+10.5% | Added |
| New York State Teachers Retirement System | 155,300 | $50.1M | 0.10% | 00.0% | Unchanged |
| GFI Investment Counsel Ltd. | 157,437 | $50.8M | 6.95% | −9,725−5.8% | Reduced |
| Standard Life Aberdeen plc | 158,598 | $51.2M | 0.08% | +5,309+3.5% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 159,373 | $51.4M | 0.08% | +117,877+284.1% | Added |
| Mackenzie Financial Corp | 166,498 | $53.7M | 0.06% | −162,203−49.3% | Reduced |
| Korea Investment CORP | 168,112 | $54.3M | 0.11% | +64,173+61.7% | Added |
| Nomura Asset Management Co Ltd | 174,425 | $56.3M | 0.15% | +6,579+3.9% | Added |
| Ninety One North America, Inc. | 175,559 | $56.7M | 2.54% | −926−0.5% | Reduced |
| Eminence Capital, LP | 179,019 | $57.8M | 1.32% | +179,019 | New |
| Teacher Retirement System of Texas | 180,893 | $58.4M | 0.24% | +68,612+61.1% | Added |
| Nicholas Company, Inc. | 181,227 | $58.5M | 1.15% | −175−0.1% | Reduced |
| State Board of Administration of Florida Retirement System | 181,412 | $58.6M | 0.11% | 00.0% | Unchanged |
| Fiducient Advisors LLC | 183,310 | $59.2M | 7.73% | +63,720+53.3% | Added |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 213,860 | $69.0M | 4.82% | −4,875−2.2% | Reduced |
| Adage Capital Partners GP, L.L.C. | 222,169 | $71.7M | 0.11% | −384,400−63.4% | Reduced |
| Ensign Peak Advisors, Inc | 223,178 | $72.0M | 0.13% | +16,693+8.1% | Added |
| Balyasny Asset Management LLC | 224,321 | $72.4M | 0.14% | −162,692−42.0% | Reduced |
| Quantinno Capital Management LP | 225,807 | $72.9M | 0.12% | +109,492+94.1% | Added |
| Verition Fund Management LLC | 228,209 | $73.7M | 0.71% | +20,647+9.9% | Added |
| Raymond James Financial Inc | 234,621 | $75.7M | 0.02% | −12,024−4.9% | Reduced |
| Alliancebernstein L.P. | 220,323 | $77.7M | 0.03% | +1,828+0.8% | Added |
| New York State Common Retirement Fund | 244,232 | $78.8M | 0.11% | +1,600+0.7% | Added |
| Citigroup Inc | 250,447 | $80.8M | 0.05% | +28,022+12.6% | Added |
| Principal Financial Group Inc | 250,925 | $81.0M | 0.04% | +2,444+1.0% | Added |
| Jones Financial Companies LLLP | 259,033 | $81.3M | 0.04% | +253,762+4,814.3% | Added |
| BloombergSen Inc. | 254,006 | $82.0M | 9.18% | −8,744−3.3% | Reduced |
| Scharf Investments, LLC | 254,941 | $82.3M | 2.54% | +46,830+22.5% | Added |
| Russell Investments Group, Ltd. | 262,916 | $84.9M | 0.09% | −43,582−14.2% | Reduced |
| Canada Pension Plan Investment Board | 269,059 | $86.8M | 0.06% | +246,712+1,104.0% | Added |
| CapitalatWork S.A. | 272,003 | $87.8M | 2.61% | +74,149+37.5% | Added |
| DekaBank Deutsche Girozentrale | 275,444 | $90.4M | 0.15% | 00.0% | Unchanged |
| Bristol John W & Co Inc | 283,054 | $91.4M | 1.50% | −3,074−1.1% | Reduced |
| Bank of Montreal | 288,235 | $93.0M | 0.04% | −27,737−8.8% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 291,337 | $94.1M | 0.11% | +238,672+453.2% | Added |
| Lord, Abbett & Co. LLC | 298,530 | $96.4M | 0.31% | +26,484+9.7% | Added |
| California State Teachers Retirement System | 308,973 | $99.7M | 0.11% | −9,368−2.9% | Reduced |
| Aviva PLC | 310,335 | $100.2M | 0.17% | −23,119−6.9% | Reduced |
| Cryder Capital Partners LLP | 321,689 | $103.8M | 6.78% | +26,538+9.0% | Added |
| Bowie Capital Management, LLC | 322,167 | $104.0M | 4.92% | −21,982−6.4% | Reduced |
| Prana Capital Management, LP | 323,458 | $104.4M | 3.20% | +167,301+107.1% | Added |
| Davenport & Co LLC | 337,041 | $108.9M | 0.60% | +67,681+25.1% | Added |
| Natixis Advisors, L.P. | 341,937 | $110.4M | 0.15% | +7,426+2.2% | Added |
| Haverford Trust Co | 346,117 | $111.7M | 1.02% | −5,051−1.4% | Reduced |
| HSBC Holdings PLC | 354,158 | $114.4M | 0.07% | +163,479+85.7% | Added |
| Franklin Resources Inc | 361,315 | $116.6M | 0.03% | +71,051+24.5% | Added |
| Vanguard Asset Management, Ltd | 361,858 | $116.8M | 0.10% | +361,858 | New |
| Wells Fargo & Company | 365,706 | $118.0M | 0.02% | +25,657+7.5% | Added |
| BNP Paribas Arbitrage, SA | 368,360 | $118.9M | 0.08% | −53,704−12.7% | Reduced |
| Rhumbline Advisers | 380,644 | $122.9M | 0.11% | −3,179−0.8% | Reduced |
| Douglass Winthrop Advisors, LLC | 394,536 | $127.3M | 2.33% | +1,921+0.5% | Added |
| C WorldWide Group Holding A/S | 399,312 | $128.9M | 2.77% | −32,868−7.6% | Reduced |
| Blair William & Co | 421,605 | $136.1M | 0.39% | −74,702−15.1% | Reduced |
| Envestnet Asset Management Inc | 423,209 | $136.6M | 0.04% | +78,897+22.9% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 447,301 | $144.4M | 0.09% | −23,601−5.0% | Reduced |
| SEI Investments Co | 451,925 | $145.9M | 0.13% | −9,875−2.1% | Reduced |
| Eagle Capital Management LLC | 463,350 | $149.6M | 0.50% | −1,806,064−79.6% | Reduced |
| Vanguard Global Advisers, LLC | 469,130 | $151.4M | 0.08% | +469,130 | New |