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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 2025

Institutional positions in Aon plc as of Mar 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
1,276
+99 vs. Q4 2024
Shares held
193.6M
+2.23M (+1.2%) vs. Q4 2024
Total value
$77.1B
+$8.37B (+12.2%) vs. Q4 2024
New holders
168
469 more added
Sold out
69
398 more reduced

19 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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.

Institutional holdersQ1 2025: 1,276 institutions
Q1 2021: 919 institutionsQ2 2021: 912 institutionsQ3 2021: 917 institutionsQ4 2021: 995 institutionsQ1 2022: 985 institutionsQ2 2022: 966 institutionsQ3 2022: 950 institutionsQ4 2022: 1,034 institutionsQ1 2023: 1,014 institutionsQ2 2023: 1,025 institutionsQ3 2023: 1,049 institutionsQ4 2023: 1,067 institutionsQ1 2024: 1,087 institutionsQ2 2024: 1,111 institutionsQ3 2024: 1,149 institutionsQ4 2024: 1,196 institutionsQ1 2025: 1,276 institutionsQ2 2025: 1,233 institutionsQ3 2025: 1,255 institutionsQ4 2025: 1,289 institutionsQ1 2026: 1,266 institutionsQ2 2026: 1,273 institutions
Value heldQ1 2025: $77.1B
Q1 2021: $51.4BQ2 2021: $53.4BQ3 2021: $57.2BQ4 2021: $56.5BQ1 2022: $61.2BQ2 2022: $49.5BQ3 2022: $48.4BQ4 2022: $52.6BQ1 2023: $55.7BQ2 2023: $61.2BQ3 2023: $56.4BQ4 2023: $49.8BQ1 2024: $57.4BQ2 2024: $55.4BQ3 2024: $66.1BQ4 2024: $69.1BQ1 2025: $77.1BQ2 2025: $69.3BQ3 2025: $66.3BQ4 2025: $66.7BQ1 2026: $60.6BQ2 2026: $63.9B
Institutions holding AON and their total value by quarter
QuarterHoldersValue
Q2 20261,273$63.9B
Q1 20261,266$60.6B
Q4 20251,289$66.7B
Q3 20251,255$66.3B
Q2 20251,233$69.3B
Q1 20251,276$77.1B
Q4 20241,196$69.1B
Q3 20241,149$66.1B
Q2 20241,111$55.4B
Q1 20241,087$57.4B
Q4 20231,067$49.8B
Q3 20231,049$56.4B
Q2 20231,025$61.2B
Q1 20231,014$55.7B
Q4 20221,034$52.6B
Q3 2022950$48.4B
Q2 2022966$49.5B
Q1 2022985$61.2B
Q4 2021995$56.5B
Q3 2021917$57.2B
Q2 2021912$53.4B
Q1 2021919$51.4B

Institutions, Q1 2025

Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q4 2024.

Institutions holding AON in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
ExodusPoint Capital Management, LP26,994$10.8M0.14%+26,994New
Philadelphia Financial Management of San Francisco, LLC27,289$10.9M2.42%+27,289New
Quantinno Capital Management LP27,413$10.9M0.07%+11,072+67.8%Added
Prudential Financial Inc27,855$11.1M0.02%+213+0.8%Added
Sumitomo Mitsui DS Asset Management Company, Ltd28,022$11.2M0.11%+1,489+5.6%Added
Motco28,120$11.2M1.19%−284−1.0%Reduced
Susquehanna International Group, LLP28,293$11.3M0.02%−59,545−67.8%Reduced
O'Shaughnessy Asset Management, LLC28,420$11.3M0.09%+3,465+13.9%Added
Police & Firemen's Retirement System of New Jersey28,543$11.4M0.12%00.0%Unchanged
First Manhattan Co28,581$11.4M0.03%−391−1.3%Reduced
New York Life Investment Management LLC28,893$11.5M0.12%−81−0.3%Reduced
Daiwa Securities Group Inc.29,071$11.6M0.05%+2,181+8.1%Added
Yousif Capital Management, LLC29,193$11.7M0.14%+1,584+5.7%Added
Xponance, Inc.29,842$11.9M0.12%+174+0.6%Added
Marshall Wace, LLP30,431$12.1M0.02%−196,047−86.6%Reduced
Peapack Gladstone Financial Corp30,508$12.2M0.18%+1,043+3.5%Added
Motley Fool Asset Management LLC30,619$12.2M0.69%−1,053−3.3%Reduced
Premier Fund Managers Ltd31,228$12.3M0.46%−300−1.0%Reduced
M&T Bank Corp30,854$12.3M0.04%+1,609+5.5%Added
Motley Fool Wealth Management, LLC30,924$12.3M0.73%−4,329−12.3%Reduced
Creative Planning31,431$12.5M0.01%+1,955+6.6%Added
American Century Companies Inc31,463$12.6M0.01%+1,413+4.7%Added
US Bancorp32,069$12.8M0.02%+578+1.8%Added
Macquarie Group Ltd32,234$12.9M0.02%+3,939+13.9%Added
Toroso Investments, LLC32,252$12.9M0.11%−99−0.3%Reduced
Moore Capital Management, LP32,379$12.9M0.43%−154,997−82.7%Reduced
Utah Retirement Systems32,498$13.0M0.15%−111−0.3%Reduced
Borer Denton & Associates, Inc.32,824$13.1M4.63%−725−2.2%Reduced
KBC Group NV33,026$13.2M0.04%+1,553+4.9%Added
Zevin Asset Management LLC33,046$13.2M2.09%−1,566−4.5%Reduced
AQR Capital Management LLC34,076$13.5M0.01%−1,924−5.3%Reduced
Varma Mutual Pension Insurance Co33,900$13.5M0.12%−3,600−9.6%Reduced
DnB Asset Management AS34,356$13.7M0.06%−918−2.6%Reduced
Canada Pension Plan Investment Board35,024$14.0M0.01%+5,693+19.4%Added
Renaissance Technologies LLC35,101$14.0M0.02%−102,300−74.5%Reduced
Man Group plc36,087$14.4M0.04%+25,285+234.1%Added
Van Eck Associates Corp36,296$14.5M0.02%+674+1.9%Added
Unio Capital LLC36,387$14.5M5.57%−674−1.8%Reduced
Mediolanum International Funds Ltd37,062$14.6M0.20%−4,607−11.1%Reduced
British Columbia Investment Management Corp37,225$14.9M0.09%−215−0.6%Reduced
Stephens Inc37,756$15.1M0.22%+2,940+8.4%Added
Managed Asset Portfolios, LLC38,585$15.4M2.13%+38,585New
Pathstone Holdings, LLC39,198$15.6M0.07%−2,469−5.9%Reduced
Allianz Asset Management GmbH39,823$15.9M0.02%−46,444−53.8%Reduced
Cerity Partners LLC39,828$15.9M0.03%+7,680+23.9%Added
Corsair Capital Management, L.P.40,452$16.1M4.16%−125−0.3%Reduced
Capital International Ltd40,644$16.2M0.71%+1,747+4.5%Added
Factory Mutual Insurance Co41,000$16.4M0.19%+7,000+20.6%Added
Forsta Ap-Fonden41,400$16.5M0.13%+1,600+4.0%Added
Banque Pictet & Cie SA42,023$16.8M0.18%−1,611−3.7%Reduced
Tower Bridge Advisors42,922$17.1M1.91%−1,092−2.5%Reduced
Amalgamated Bank43,155$17.2M0.15%+163+0.4%Added
Credit Agricole S A43,708$17.4M0.07%−9,719−18.2%Reduced
HighTower Advisors, LLC43,738$17.5M0.02%+5,142+13.3%Added
Avalon Trust Co44,291$17.7M1.41%−1,782−3.9%Reduced
Kornitzer Capital Management Inc44,866$17.9M0.37%+27+0.1%Added
Mariner, LLC45,045$18.0M0.03%−574−1.3%Reduced
Wealth Enhancement Advisory Services, LLC45,308$18.1M0.03%+17,226+61.3%Added
AXA S.A.46,394$18.5M0.06%−3,932−7.8%Reduced
Retirement Systems of Alabama46,473$18.5M0.07%−351−0.7%Reduced
Cullen/Frost Bankers, Inc.47,001$18.8M0.26%+480+1.0%Added
Pictet & Cie (Europe) SA47,376$18.9M0.45%−9,120−16.1%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys49,457$19.7M0.12%+3,472+7.6%Added
Czech National Bank49,672$19.8M0.18%+2,781+5.9%Added
Oppenheimer Asset Management Inc.50,625$20.2M0.25%+38,098+304.1%Added
ProShare Advisors LLC50,659$20.2M0.05%+4,299+9.3%Added
Picton Mahoney Asset Management51,040$20.4M0.70%−5,627−9.9%Reduced
Gillson Capital LP51,357$20.5M1.75%+51,357New
LTS One Management LP51,500$20.6M6.26%−23,500−31.3%Reduced
CIBC World Markets Inc.51,555$20.6M0.05%+3,700+7.7%Added
Corebridge Financial, Inc.52,410$20.9M0.12%−1,953−3.6%Reduced
CIBC World Markets Corp53,103$21.2M0.17%−8,071−13.2%Reduced
Robeco Institutional Asset Management B.V.54,108$21.6M0.04%+747+1.4%Added
MetLife Investment Management55,814$22.3M0.12%−1,078−1.9%Reduced
Abner Herrman & Brock LLC56,435$22.5M2.88%−652−1.1%Reduced
AMF Pensionsforsakring AB56,459$22.6M0.17%−3,820−6.3%Reduced
Nisa Investment Advisors, LLC56,519$22.6M0.11%−79,164−58.3%Reduced
Arizona State Retirement System57,121$22.8M0.15%+854+1.5%Added
Glenmede Trust Co NA57,256$22.9M0.12%+22,513+64.8%Added
Public Sector Pension Investment Board57,858$23.1M0.10%+1,709+3.0%Added
State of Michigan Retirement System58,658$23.4M0.14%00.0%Unchanged
Ninety One UK Ltd59,422$23.7M0.07%−2,342−3.8%Reduced
Handelsbanken Fonder AB59,474$23.7M0.10%+136+0.2%Added
Financiere des Professionnels - Fonds d,investissement inc.61,543$24.6M1.59%−4,214−6.4%Reduced
Jupiter Asset Management Ltd62,785$25.1M0.24%+62,785New
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund63,285$25.3M0.30%+7,600+13.6%Added
STRS Ohio63,919$25.5M0.11%−517−0.8%Reduced
Brinker Capital Investments, LLC64,295$25.7M0.25%+253+0.4%Added
Orion Portfolio Solutions, LLC64,295$25.7M0.25%+253+0.4%Added
Lansforsakringar Fondforvaltning AB (publ)64,476$25.7M0.16%−1,350−2.1%Reduced
Aquatic Capital Management LLC64,719$25.8M0.66%+64,719New
Hantz Financial Services, Inc.65,440$26.1M0.46%+45,061+221.1%Added
State of New Jersey Common Pension Fund D65,619$26.2M0.12%−6,658−9.2%Reduced
JLB & Associates Inc67,675$27.0M3.77%−640−0.9%Reduced
LPL Financial LLC67,893$27.1M0.01%−532−0.8%Reduced
Federation des caisses Desjardins du Quebec67,862$27.1M0.13%+2,478+3.8%Added
Lighthouse Investment Partners, LLC68,136$27.2M1.24%+68,136New
TownSquare Capital, LLC69,003$27.5M0.29%+55,813+423.1%Added
Williams Jones Wealth Management, LLC.70,551$28.2M0.36%−5,281−7.0%Reduced
Capital International Inc70,751$28.2M0.34%+848+1.2%Added