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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
Qsemble Capital Management, LP0$00.00%−16,467−100.0%Sold out
Interval Partners, LP0$00.00%−15,873−100.0%Sold out
IMC-Chicago, LLC0$00.00%−14,736−100.0%Sold out
Arlington Partners LLC0$00.00%−13,542−100.0%Sold out
ISAM Funds (UK) Ltd0$00.00%−13,109−100.0%Sold out
Simplex Trading, LLC0$00.00%−11,892−100.0%Sold out
Tema ETFs LLC0$00.00%−9,635−100.0%Sold out
Brighton Jones LLC0$00.00%−7,269−100.0%Sold out
Mitchell Capital Management Co0$00.00%−5,966−100.0%Sold out
Ashton Thomas Securities, LLC0$00.00%−5,497−100.0%Sold out
Bayesian Capital Management, LP0$00.00%−5,093−100.0%Sold out
Winton Group Ltd0$00.00%−4,990−100.0%Sold out
Jain Global LLC0$00.00%−4,858−100.0%Sold out
Coppell Advisory Solutions LLC0$00.00%−4,755−100.0%Sold out
Dark Forest Capital Management LP0$00.00%−4,726−100.0%Sold out
FJ Capital Management LLC0$00.00%−4,176−100.0%Sold out
Applied Finance Capital Management, LLC0$00.00%−4,087−100.0%Sold out
Sageworth Trust Co0$00.00%−3,628−100.0%Sold out
XTX Topco Ltd0$00.00%−3,558−100.0%Sold out
Rinkey Investments0$00.00%−3,376−100.0%Sold out
Fox Run Management, L.L.C.0$00.00%−2,936−100.0%Sold out
Pinnbrook Capital Management LP0$00.00%−2,815−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−2,619−100.0%Sold out
Beirne Wealth Consulting Services, LLC0$00.00%−2,596−100.0%Sold out
111 Capital0$00.00%−2,527−100.0%Sold out
MQS Management LLC0$00.00%−2,416−100.0%Sold out
Aigen Investment Management, LP0$00.00%−2,125−100.0%Sold out
Atom Investors LP0$00.00%−2,104−100.0%Sold out
R Squared Ltd0$00.00%−2,099−100.0%Sold out
PUREfi Wealth, LLC0$00.00%−1,887−100.0%Sold out
Stevens Capital Management LP0$00.00%−1,877−100.0%Sold out
Quadrature Capital Ltd0$00.00%−1,628−100.0%Sold out
Arete Wealth Advisors, LLC0$00.00%−1,428−100.0%Sold out
Oxford Asset Management LLP0$00.00%−1,401−100.0%Sold out
Visionary Wealth Advisors0$00.00%−1,266−100.0%Sold out
TownSquare Capital, LLC0$00.00%−1,229−100.0%Sold out
Sapient Capital LLC0$00.00%−1,167−100.0%Sold out
Avestar Capital, LLC0$00.00%−1,052−100.0%Sold out
Cynosure Management, LLC0$00.00%−1,027−100.0%Sold out
Dauntless Investment Group, LLC0$00.00%−1,010−100.0%Sold out
Archetype Wealth Partners0$00.00%−996−100.0%Sold out
Alps Advisors Inc0$00.00%−966−100.0%Sold out
Pitcairn Co0$00.00%−911−100.0%Sold out
PharVision Advisers, LLC0$00.00%−901−100.0%Sold out
First National Bank of Hutchinson0$00.00%−895−100.0%Sold out
CBOE Vest Financial, LLC0$00.00%−894−100.0%Sold out
FDx Advisors, Inc.0$00.00%−913−100.0%Sold out
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management0$00.00%−771−100.0%Sold out
Wexford Capital LP0$00.00%−740−100.0%Sold out
Headlands Technologies LLC0$00.00%−735−100.0%Sold out
Net Worth Advisory Group0$00.00%−735−100.0%Sold out
Great Lakes Advisors, LLC0$00.00%−728−100.0%Sold out
Blue Barn Wealth, LLC0$00.00%−707−100.0%Sold out
NovaPoint Capital, LLC0$00.00%−685−100.0%Sold out
Wrapmanager Inc0$00.00%−655−100.0%Sold out
TCI Wealth Advisors, Inc.0$00.00%−608−100.0%Sold out
Catalyst Funds Management Pty Ltd0$00.00%−600−100.0%Sold out
Resonant Capital Advisors, LLC0$00.00%−595−100.0%Sold out
Sunpointe, LLC0$00.00%−593−100.0%Sold out
Boston Private Wealth LLC0$00.00%−571−100.0%Sold out
D'Orazio & Associates, Inc.0$00.00%−571−100.0%Sold out
Focus Financial Network, Inc.0$00.00%−570−100.0%Sold out
Aprio Wealth Management, LLC0$00.00%−567−100.0%Sold out
Fort Sheridan Advisors LLC0$00.00%−566−100.0%Sold out
Principal Securities, Inc.0$00.00%−500−100.0%Sold out
Ameritas Advisory Services, LLC0$00.00%−489−100.0%Sold out
Matrix Trust Co0$00.00%−422−100.0%Sold out
Twin Tree Management, LP0$00.00%−411−100.0%Sold out
JPL Wealth Management, LLC0$00.00%−323−100.0%Sold out
Cloud Capital Management, LLC0$00.00%−209−100.0%Sold out
Rise Advisors, LLC0$00.00%−134−100.0%Sold out
Grey Fox Wealth Advisors, LLC0$00.00%−130−100.0%Sold out
Accent Capital Management, LLC0$00.00%−101−100.0%Sold out
Strive Asset Management, LLC0$00.00%−99−100.0%Sold out
Heartwood Wealth Advisors LLC0$00.00%−81−100.0%Sold out
Tortoise Investment Management, LLC0$00.00%−50−100.0%Sold out
GPS Wealth Strategies Group, LLC0$00.00%−40−100.0%Sold out
Marquette Asset Management, LLC0$00.00%−18−100.0%Sold out
Palisade Asset Management, LLC0$00.00%−18−100.0%Sold out
Mendota Financial Group, LLC0$00.00%−12−100.0%Sold out
Atlantic Trust, LLC0$00.00%−8−100.0%Sold out
Core Alternative Capital0$00.00%−7−100.0%Sold out
Marshall & Sterling Wealth Advisors Inc.0$00.00%−4−100.0%Sold out
North Capital, Inc.0$00.00%−4−100.0%Sold out
Contravisory Investment Management, Inc.0$00.00%−3−100.0%Sold out
Hurley Capital, LLC0$00.00%−1−100.0%Sold out
Scarborough Advisors, LLC0$00.00%−1−100.0%Sold out
Breakwater Investment Management0$00.00%−1−100.0%Sold out
CIBC Bancorp USA Inc.––––Not filed
Glenmede Investment Management, LP––––Not filed
Cubist Systematic Strategies, LLC––––Not filed
AXA Investment Managers S.A.––––Not filed
Point72 (DIFC) Ltd––––Not filed
Point72 Hong Kong Ltd––––Not filed
Wetherby Asset Management Inc––––Not filed
Wolverine Trading, LLC––––Not filed
Pinnacle Financial Partners Inc––––Not filed
Synovus Financial Corp––––Not filed
Ridgewood Investments LLC––––Not filed
Eisler Capital Management Ltd.––––Not filed