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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 2021

Institutional positions in Aon plc as of Mar 31, 2021. 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
919
No complete 13F data for Q4 2020
Shares held
223.5M
No complete 13F data for Q4 2020
Total value
$51.4B
No complete 13F data for Q4 2020

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 2021: 919 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: 1,024 institutionsQ3 2023: 1,048 institutionsQ4 2023: 1,066 institutionsQ1 2024: 1,086 institutionsQ2 2024: 1,110 institutionsQ3 2024: 1,148 institutionsQ4 2024: 1,195 institutionsQ1 2025: 1,275 institutionsQ2 2025: 1,232 institutionsQ3 2025: 1,254 institutionsQ4 2025: 1,288 institutionsQ1 2026: 1,265 institutionsQ2 2026: 1,273 institutions
Value heldQ1 2021: $51.4B
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 20261,265$60.6B
Q4 20251,288$66.7B
Q3 20251,254$66.3B
Q2 20251,232$69.3B
Q1 20251,275$77.1B
Q4 20241,195$69.1B
Q3 20241,148$66.1B
Q2 20241,110$55.4B
Q1 20241,086$57.4B
Q4 20231,066$49.8B
Q3 20231,048$56.4B
Q2 20231,024$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 2021

Shares, value and share of portfolio for each institution holding Aon plc.

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding AON in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Pictet & Cie (Europe) SA21,207$4.88M0.20%––
First National Bank of Omaha21,227$4.88M0.25%––
Northwestern Mutual Wealth Management Co21,386$4.92M0.01%––
Public Sector Pension Investment Board21,785$5.01M0.03%––
Aigen Investment Management, LP21,954$5.05M0.67%––
Glenmede Trust Co NA22,082$5.08M0.03%––
Boston Common Asset Management, LLC22,248$5.12M0.32%––
Violich Capital Management, Inc.22,445$5.17M0.93%––
CX Institutional22,504$5.18M0.46%––
Panagora Asset Management Inc23,409$5.39M0.03%––
Paloma Partners Management Co23,579$5.42M0.16%––
Steel Canyon Capital, LLC23,631$5.44M4.98%––
SG Americas Securities, LLC23,666$5.45M0.03%––
Daiwa Securities Group Inc.23,972$5.52M0.04%––
Zevin Asset Management LLC24,069$5.54M1.22%––
Qube Research & Technologies Ltd24,471$5.63M0.09%––
CIBC Private Wealth Group, LLC24,590$5.66M0.01%––
MRJ Capital Inc24,727$5.69M3.55%––
Jane Street Group, LLC24,933$5.74M0.02%––
Nissay Asset Management Corp25,097$5.78M0.06%––
Running Oak Capital LLC25,098$5.78M1.76%––
Bokf, NA25,320$5.83M0.11%––
Carderock Capital Management Inc25,434$5.85M1.75%––
Sompo Asset Management Co., Ltd.25,460$5.86M1.33%––
Man Group plc25,531$5.88M0.03%––
Teacher Retirement System of Texas25,742$5.92M0.03%––
Westpac Banking Corp25,770$5.93M0.07%––
Commerce Bank26,402$6.08M0.05%––
ExodusPoint Capital Management, LP26,647$6.13M0.12%––
Advisor Group Holdings, Inc.26,960$6.21M0.01%––
US Bancorp27,390$6.30M0.01%––
Stephens Inc27,423$6.31M0.10%––
SG3 Management, LLC27,500$6.33M2.07%––
Commonwealth Equity Services, LLC27,600$6.35M0.02%––
Barings LLC28,015$6.45M0.16%––
Andra AP-fonden28,100$6.47M0.14%––
Aperture Investors, LLC28,502$6.56M1.05%––
Mutual of America Capital Management LLC29,309$6.74M0.07%––
HighTower Advisors, LLC29,742$6.84M0.02%––
Churchill Management Corp30,282$6.97M0.11%––
Foyston, Gordon, & Payne Inc30,657$7.05M1.66%––
CIBC World Markets Inc.30,859$7.10M0.02%––
Strategy Asset Managers LLC31,157$7.17M1.64%––
Unio Capital LLC31,376$7.22M3.42%––
Voloridge Investment Management, LLC31,520$7.25M0.05%––
Dai-Ichi Life Insurance Company, Ltd32,525$7.48M0.10%––
Fiduciary Group LLC30,265$7.61M0.93%––
Xponance, Inc.33,281$7.66M0.16%––
LPL Financial LLC33,427$7.69M0.01%––
HSBC Holdings PLC33,496$7.73M0.01%––
Citizens Financial Group Inc33,801$7.78M0.41%––
Texas Permanent School Fund34,062$7.84M0.10%––
Twin Tree Management, LP34,166$7.86M0.30%––
Robeco Schweiz AG34,741$7.99M0.12%––
State of Alaska, Department of Revenue35,406$8.15M0.09%––
HM Payson & Co35,927$8.27M0.22%––
First Manhattan Co36,511$8.40M0.04%––
Vestcor Inc36,589$8.42M0.32%––
Peapack Gladstone Financial Corp36,622$8.43M0.22%––
Capital International Sarl36,647$8.43M0.80%––
Hantz Financial Services, Inc.36,849$8.48M0.35%––
British Columbia Investment Management Corp37,560$8.64M0.06%––
Janney Montgomery Scott LLC37,957$8.73M0.04%––
Kiwi Wealth Investments Limited Partnership38,588$8.88M0.51%––
Silvercrest Asset Management Group LLC39,267$9.04M0.06%––
Metropolitan Life Insurance Co39,541$9.10M0.14%––
Public Employees Retirement Association of Colorado40,964$9.43M0.04%––
Hexavest Inc.41,330$9.51M0.42%––
Markel Group Inc.SuperinvestorMarkel Group41,500$9.55M0.13%––
First Republic Investment Management, Inc.41,580$9.57M0.03%––
Pinebridge Investments, L.P.41,858$9.63M0.12%––
Utah Retirement Systems43,484$10.0M0.14%––
Greenwood Gearhart Inc43,562$10.0M1.78%––
Tudor Investment Corp Et Al43,825$10.1M0.22%––
Nomura Asset Management Co Ltd43,998$10.1M0.06%––
Oregon Public Employees Retirement Fund45,084$10.4M0.12%––
Kirr Marbach & Co LLC45,320$10.4M3.02%––
YHB Investment Advisors, Inc.44,317$10.6M0.92%––
Gulf International Bank (UK) Ltd46,303$10.7M0.15%––
Sustainable Growth Advisers, LP47,717$11.0M0.06%––
Kornitzer Capital Management Inc48,000$11.0M0.18%––
Comerica Bank48,138$11.1M0.07%––
Global Endowment Management, LP48,591$11.2M0.70%––
BlueMar Capital Management, LLC48,804$11.2M2.43%––
William Blair Investment Management, LLC49,228$11.3M0.04%––
Susquehanna Fundamental Investments, LLC49,657$11.4M0.20%––
Fifth Third Bancorp49,932$11.5M0.05%––
Parkwood LLC50,705$11.7M2.06%––
Cullen/Frost Bankers, Inc.50,781$11.7M0.26%––
People's United Financial, Inc.50,877$11.7M0.28%––
Dana Investment Advisors, Inc.51,077$11.8M0.54%––
Victory Capital Management Inc51,143$11.8M0.01%––
Marks Group Wealth Management, Inc51,106$11.8M1.75%––
Corsair Capital Management, L.P.51,723$11.9M2.48%––
Brinker Capital Investments, LLC52,032$12.0M0.18%––
Swiss Life Asset Management Ltd52,292$12.0M0.17%––
M&T Bank Corp53,623$12.3M0.05%––
ProShare Advisors LLC53,778$12.4M0.04%––
MetLife Investment Management53,851$12.4M0.11%––
Old National Bancorp53,901$12.4M0.49%––