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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, 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.

Institutional holdersQ4 2025: 1,289 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 heldQ4 2025: $66.7B
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, Q4 2025

Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q3 2025.

Institutions holding AON in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Clifford Swan Investment Counsel LLC24,291$8.57M0.28%+395+1.7%Added
Swiss Life Asset Management Ltd24,203$8.54M0.04%−14,246−37.1%Reduced
Ethic Inc.24,067$8.49M0.13%+1,487+6.6%Added
O'Shaughnessy Asset Management, LLC23,779$8.39M0.05%−3,132−11.6%Reduced
Advisor Group Holdings, Inc.23,470$8.28M0.01%−6,424−21.5%Reduced
Intermede Investment Partners Ltd23,160$8.17M0.34%+101+0.4%Added
Callan Family Office, LLC23,152$8.17M0.18%+11,477+98.3%Added
Silvercrest Asset Management Group LLC23,098$8.15M0.06%−6,967−23.2%Reduced
Mutual of America Capital Management LLC23,081$8.14M0.09%−293−1.3%Reduced
Wedge Capital Management L L P22,809$8.05M0.14%−5,508−19.5%Reduced
Live Oak Private Wealth LLC22,563$7.96M1.08%+421+1.9%Added
Strategy Asset Managers LLC22,512$7.94M1.31%+3,175+16.4%Added
Carderock Capital Management Inc22,438$7.92M1.92%+797+3.7%Added
Dash Acquisitions Inc.22,555$7.90M1.65%−1,020−4.3%Reduced
Canada Pension Plan Investment Board22,347$7.89M0.01%−6,032−21.3%Reduced
Mirae Asset Global ETFs Holdings Ltd.22,301$7.87M0.01%+18+0.1%Added
Haverford Financial Services, Inc.22,017$7.77M2.18%−258−1.2%Reduced
CIBC Private Wealth Group, LLC21,767$7.68M0.01%−1,163−5.1%Reduced
Violich Capital Management, Inc.21,608$7.63M0.85%+600+2.9%Added
Fiduciary Group LLC21,422$7.56M0.63%−207−1.0%Reduced
Truist Financial Corp21,013$7.41M0.01%+1,291+6.5%Added
Prudential PLC20,800$7.34M0.06%00.0%Unchanged
Nordea Investment Management AB19,985$7.10M0.01%+770+4.0%Added
ASR Vermogensbeheer N.V.20,004$7.06M0.08%+205+1.0%Added
Motley Fool Wealth Management, LLC19,857$7.01M0.54%−3,555−15.2%Reduced
Trexquant Investment LP19,816$6.99M0.06%−9,305−32.0%Reduced
KWMG, LLC19,709$6.95M0.60%+720+3.8%Added
Marks Group Wealth Management, Inc19,674$6.94M0.66%−5,097−20.6%Reduced
Bleakley Financial Group, LLC19,665$6.94M0.12%+1,024+5.5%Added
Gerber, LLC19,553$6.90M3.85%−900−4.4%Reduced
Pacer Advisors, Inc.19,504$6.88M0.02%+2,140+12.3%Added
Two Sigma Investments, LP19,497$6.88M0.01%−76,186−79.6%Reduced
Vinva Investment Management Ltd19,096$6.81M0.08%+8,399+78.5%Added
Avanza Fonder AB18,957$6.69M0.17%+1,825+10.7%Added
Kestra Advisory Services, LLC18,946$6.69M0.03%−1,057−5.3%Reduced
Savant Capital, LLC18,799$6.63M0.04%+7,240+62.6%Added
Empowered Funds, LLC18,604$6.56M0.11%+7,984+75.2%Added
Voleon Capital Management LP18,510$6.53M0.14%+14,858+406.8%Added
Commerce Bank18,434$6.50M0.04%−364−1.9%Reduced
Dockside LLC17,873$6.31M1.62%+17,873New
Janney Capital Management LLC17,461$6.16M0.39%+17,461New
Investment Management Corp of Ontario17,372$6.13M0.08%+7,776+81.0%Added
Johnson Investment Counsel Inc17,348$6.12M0.05%−73−0.4%Reduced
Teachers Retirement System of the State of Kentucky16,947$5.98M0.04%00.0%Unchanged
Mercer Global Advisors Inc16,870$5.95M0.01%+3,847+29.5%Added
NewEdge Wealth, LLC16,807$5.93M0.07%+8,810+110.2%Added
Berman McAleer LLC16,613$5.86M0.80%−1,516−8.4%Reduced
Biltmore Family Office, LLC16,562$5.84M0.81%+13+0.1%Added
Obion Capital Management LP16,189$5.71M5.49%+16,189New
Bell Asset Management Ltd15,941$5.67M1.51%−3,134−16.4%Reduced
Wesbanco Bank Inc16,030$5.66M0.16%+1,373+9.4%Added
Pine Valley Investments Ltd Liability Co15,825$5.58M0.28%+619+4.1%Added
Man Group plc15,821$5.58M0.01%+9,165+137.7%Added
Cresset Asset Management, LLC15,774$5.57M0.02%−603−3.7%Reduced
Sanctuary Advisors, LLC15,753$5.56M0.03%−145−0.9%Reduced
Mizuho Securities USA LLC15,650$5.54M0.09%−55−0.4%Reduced
Allstate Corp15,636$5.52M0.08%+8,008+105.0%Added
Sequoia Financial Advisors, LLC15,202$5.36M0.03%+2,043+15.5%Added
Illinois Municipal Retirement Fund14,712$5.19M0.07%+1,231+9.1%Added
Wealthfront Advisers LLC14,410$5.09M0.01%+1,027+7.7%Added
Atria Investments LLC13,981$4.93M0.06%−2,260−13.9%Reduced
CWM, LLC13,931$4.92M0.01%+2,471+21.6%Added
Pittenger & Anderson Inc13,897$4.90M0.19%+82+0.6%Added
Federation des caisses Desjardins du Quebec13,591$4.80M0.02%+612+4.7%Added
MML Investors Services, LLC13,486$4.76M0.01%+344+2.6%Added
GWM Advisors LLC13,453$4.75M0.02%−1,166−8.0%Reduced
Jasper Ridge Partners, L.P.13,390$4.73M0.10%00.0%Unchanged
Bridgewater Associates, LP13,368$4.72M0.02%+7,663+134.3%Added
Assetmark, Inc13,321$4.70M0.01%+696+5.5%Added
Osmosis Investment Management UK Ltd13,309$4.70M0.12%+13,309New
Modera Wealth Management, LLC13,265$4.68M0.05%+137+1.0%Added
Diversified Trust Co13,186$4.65M0.09%+500+3.9%Added
Kentucky Retirement Systems13,183$4.65M0.13%00.0%Unchanged
Northwestern Mutual Wealth Management Co13,069$4.61M0.00%−4,429−25.3%Reduced
Yacktman Asset Management LP12,915$4.56M0.06%00.0%Unchanged
Allspring Global Investments Holdings, LLC13,046$4.49M0.01%+114+0.9%Added
Scotia Capital Inc.12,633$4.46M0.02%+3,068+32.1%Added
Annandale Capital, LLC12,619$4.45M0.72%+7,198+132.8%Added
2Xideas AG12,371$4.37M1.22%+12,371New
Buckhead Capital Management LLC12,309$4.34M1.56%+158+1.3%Added
Regency Capital Management Inc.12,201$4.31M1.79%−661−5.1%Reduced
Wiley Bros.-Aintree Capital, LLC12,118$4.28M0.02%+719+6.3%Added
Norinchukin Bank, The12,097$4.27M0.05%+534+4.6%Added
Accurate Wealth Management, LLC11,825$4.15M0.53%−317−2.6%Reduced
Ar Asset Management Inc11,618$4.10M0.84%00.0%Unchanged
Capital Planning Advisors, LLC11,616$4.10M0.55%−747−6.0%Reduced
Laird Norton Trust Company, LLC11,516$4.06M0.08%+11,516New
Regions Financial Corp11,500$4.06M0.03%−178−1.5%Reduced
Janney Montgomery Scott LLC11,456$4.04M0.01%−100−0.9%Reduced
Employees Retirement System of Texas11,301$3.99M0.03%−8,873−44.0%Reduced
La Banque Postale Asset Management SA11,290$3.98M0.05%−3,862−25.5%Reduced
NFP Retirement, Inc.11,287$3.98M0.24%+50.0%Added
Pure Financial Advisors, Inc.11,272$3.98M0.06%+638+6.0%Added
Seascape Capital Management11,030$3.89M1.11%+34+0.3%Added
Louisiana State Employees Retirement System11,000$3.88M0.07%−300−2.7%Reduced
Lido Advisors, LLC10,868$3.86M0.02%+148+1.4%Added
Miller Capital Partners, Inc.10,833$3.82M1.95%+10,833New
Radnor Capital Management, LLC10,632$3.75M0.56%−30−0.3%Reduced
Jensen Investment Management Inc10,603$3.74M0.06%+503+5.0%Added
Clearstead Advisors, LLC10,538$3.72M0.05%+319+3.1%Added