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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, Q2 2025

Institutional positions in Aon plc as of Jun 30, 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
1,233
−27 vs. Q1 2025
Shares held
194.2M
+975.4K (+0.5%) vs. Q1 2025
Total value
$69.3B
−$7.65B (−9.9%) vs. Q1 2025
New holders
108
432 more added
Sold out
135
470 more reduced

16 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2025: 1,233 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 heldQ2 2025: $69.3B
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, Q2 2025

Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q1 2025.

Institutions holding AON in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Ninety One UK Ltd57,949$20.7M0.05%−1,473−2.5%Reduced
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main57,877$20.6M0.02%−1,412,143−96.1%Reduced
Glenmede Investment Management, LP57,587$20.5M0.10%+57,587New
Financiere des Professionnels - Fonds d,investissement inc.57,555$20.5M1.24%−3,988−6.5%Reduced
Robeco Institutional Asset Management B.V.57,175$20.4M0.03%+3,067+5.7%Added
Arizona State Retirement System56,831$20.3M0.12%−290−0.5%Reduced
Nisa Investment Advisors, LLC55,985$20.0M0.09%−534−0.9%Reduced
Abner Herrman & Brock LLC55,787$19.9M2.22%−648−1.1%Reduced
Managed Asset Portfolios, LLC54,280$19.4M2.52%+15,695+40.7%Added
CIBC World Markets Corp54,275$19.4M0.13%+1,172+2.2%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys52,960$18.9M0.10%+3,503+7.1%Added
Picton Mahoney Asset Management52,813$18.8M0.27%+1,773+3.5%Added
Czech National Bank52,783$18.8M0.15%+3,111+6.3%Added
Xponance, Inc.51,332$18.3M0.15%+21,490+72.0%Added
Oppenheimer Asset Management Inc.50,651$18.1M0.21%+26+0.1%Added
Williams Jones Wealth Management, LLC.49,891$17.8M0.21%−20,660−29.3%Reduced
Global Frontier Investments LLC49,000$17.5M4.17%+49,000New
Cullen/Frost Bankers, Inc.47,966$17.1M0.21%+965+2.1%Added
ProShare Advisors LLC47,799$17.1M0.03%−2,860−5.6%Reduced
Amalgamated Bank47,798$17.1M0.13%+4,643+10.8%Added
Bank of Nova Scotia47,779$17.0M0.03%+25,188+111.5%Added
CIBC World Markets Inc.47,298$16.9M0.04%−4,257−8.3%Reduced
AXA S.A.46,492$16.6M0.05%+98+0.2%Added
Retirement Systems of Alabama46,337$16.5M0.06%−136−0.3%Reduced
Factory Mutual Insurance Co46,000$16.4M0.18%+5,000+12.2%Added
Intech Investment Management LLC45,557$16.3M0.15%+36,800+420.2%Added
Kornitzer Capital Management Inc44,866$16.0M0.32%00.0%Unchanged
Unio Capital LLC44,630$15.9M4.69%+8,243+22.7%Added
Public Sector Pension Investment Board44,475$15.9M0.07%−13,383−23.1%Reduced
Forsta Ap-Fonden42,600$15.2M0.10%+1,200+2.9%Added
AQR Capital Management LLC42,125$14.9M0.01%+8,049+23.6%Added
GM Advisory Group, Inc.41,709$14.9M0.74%−31,500−43.0%Reduced
Capital International Ltd41,398$14.8M0.57%+754+1.9%Added
Stephens Inc40,785$14.6M0.20%+3,029+8.0%Added
Mariner, LLC40,706$14.5M0.02%−4,339−9.6%Reduced
Tower Bridge Advisors40,610$14.5M1.56%−2,312−5.4%Reduced
Corsair Capital Management, L.P.40,368$14.4M2.76%−84−0.2%Reduced
Quantinno Capital Management LP40,044$14.3M0.06%+12,631+46.1%Added
Avalon Trust Co39,781$14.2M1.04%−4,510−10.2%Reduced
HighTower Advisors, LLC38,723$13.8M0.02%−5,015−11.5%Reduced
Jane Street Group, LLC37,787$13.5M0.02%+34,888+1,203.4%Added
Varma Mutual Pension Insurance Co37,700$13.4M0.10%+3,800+11.2%Added
Cerity Partners LLC37,603$13.4M0.02%−2,225−5.6%Reduced
Prudential Financial Inc37,345$13.3M0.02%+9,490+34.1%Added
Pathstone Holdings, LLC37,237$13.3M0.05%−1,961−5.0%Reduced
DnB Asset Management AS36,620$13.1M0.05%+2,264+6.6%Added
Swiss Life Asset Management Ltd–$12.6M0.07%––
Nippon Life Global Investors Americas, Inc.35,110$12.5M0.55%+12,440+54.9%Added
Boston Common Asset Management, LLC34,833$12.4M0.35%+8,394+31.7%Added
Gotham Asset Management, LLC34,700$12.4M0.07%+16,457+90.2%Added
1832 Asset Management L.P.34,005$12.1M0.02%+16,368+92.8%Added
Premier Fund Managers Ltd34,228$12.1M0.44%+3,000+9.6%Added
Utah Retirement Systems33,072$11.8M0.12%+574+1.8%Added
Zevin Asset Management LLC33,024$11.8M1.70%−22−0.1%Reduced
Borer Denton & Associates, Inc.32,777$11.7M4.06%−47−0.1%Reduced
KBC Group NV32,198$11.5M0.03%−828−2.5%Reduced
Van Eck Associates Corp31,993$11.4M0.01%−4,303−11.9%Reduced
Police & Firemen's Retirement System of New Jersey31,883$11.4M0.11%+3,340+11.7%Added
Wedge Capital Management L L P31,770$11.3M0.20%+7,736+32.2%Added
US Bancorp30,939$11.0M0.01%−1,130−3.5%Reduced
Daiwa Securities Group Inc.30,662$10.9M0.04%+1,591+5.5%Added
British Columbia Investment Management Corp30,588$10.9M0.06%−6,637−17.8%Reduced
Advisor Group Holdings, Inc.29,297$10.9M0.02%+17,014+138.5%Added
Man Group plc30,295$10.8M0.02%−5,792−16.1%Reduced
Peapack Gladstone Financial Corp30,222$10.8M0.15%−286−0.9%Reduced
Motley Fool Asset Management LLC30,059$10.7M0.49%−560−1.8%Reduced
State of Alaska, Department of Revenue29,935$10.7M0.11%+4,600+18.2%Added
Creative Planning29,476$10.5M0.01%−1,955−6.2%Reduced
M&T Bank Corp29,474$10.5M0.04%−1,380−4.5%Reduced
New York Life Investment Management LLC29,337$10.5M0.10%+444+1.5%Added
Yousif Capital Management, LLC29,292$10.5M0.11%+99+0.3%Added
Motco28,806$10.2M0.98%+686+2.4%Added
Quantbot Technologies LP28,657$10.2M0.26%+17,534+157.6%Added
First Manhattan Co28,342$10.1M0.03%−239−0.8%Reduced
Macquarie Group Ltd28,129$10.0M0.01%−4,105−12.7%Reduced
Select Equity Group, L.P.28,041$10.0M0.04%+28,041New
Susquehanna Portfolio Strategies, LLC27,987$9.98M0.22%+27,987New
Mirae Asset Global Investments Co., Ltd.27,943$9.97M0.03%+2,489+9.8%Added
Baird Financial Group, Inc.27,836$9.93M0.02%+909+3.4%Added
Wealth Enhancement Advisory Services, LLC27,104$9.62M0.02%−18,204−40.2%Reduced
Beese Fulmer Investment Management, Inc.26,716$9.53M0.71%+457+1.7%Added
Silvercrest Asset Management Group LLC26,613$9.49M0.06%+98+0.4%Added
JustInvest LLC26,556$9.47M0.11%+5,621+26.8%Added
Motley Fool Wealth Management, LLC26,490$9.45M0.57%−4,434−14.3%Reduced
GHP Investment Advisors, Inc.26,475$9.45M0.42%+160+0.6%Added
American Century Companies Inc26,465$9.44M0.01%−4,998−15.9%Reduced
Citizens Financial Group Inc26,276$9.37M0.15%+194+0.7%Added
Captrust Financial Advisors26,248$9.36M0.02%+1,913+7.9%Added
Sumitomo Mitsui DS Asset Management Company, Ltd26,140$9.33M0.08%−1,882−6.7%Reduced
Cornerstone Advisors, LLC25,800$9.20M0.32%+13,600+111.5%Added
Marks Group Wealth Management, Inc25,630$9.14M0.85%+290+1.1%Added
Public Employees Retirement Association of Colorado25,589$9.13M0.04%−569−2.2%Reduced
Fifth Third Bancorp25,447$9.08M0.03%+629+2.5%Added
Aryeh Capital Management Ltd.25,400$9.06M7.10%00.0%Unchanged
Commonwealth Equity Services, LLC25,109$8.96M0.01%+1,341+5.6%Added
Bell Asset Management Ltd25,029$8.93M1.97%+9,912+65.6%Added
Ethic Inc.25,268$8.91M0.16%+1,182+4.9%Added
O'Shaughnessy Asset Management, LLC24,944$8.90M0.06%−3,476−12.2%Reduced
Mutual of America Capital Management LLC24,763$8.83M0.10%−388−1.5%Reduced
YHB Investment Advisors, Inc.24,505$8.74M0.67%−300−1.2%Reduced