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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
1,288
+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
477 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: 1,288 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 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 20261,265$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, 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
Sound Income Strategies, LLC28$9.64K0.00%+26+1,300.0%Added
Bayban28$9.88K0.01%+28New
Coastline Trust Co30$10.6K0.00%00.0%Unchanged
NFJ Investment Group, LLC30$10.6K0.00%00.0%Unchanged
Albion Financial Group30$10.6K0.00%−3−9.1%Reduced
MCF Advisors LLC30$10.6K0.00%+19+172.7%Added
Colonial Trust Co31$10.8K0.00%00.0%Unchanged
SBI Securities Co., Ltd.32$11.3K0.00%+8+33.3%Added
Ares Financial Consulting, LLC32$11.3K0.01%+32New
Nvest Wealth Strategies, Inc.32$11.3K0.01%+32New
Cherry Tree Wealth Management, LLC33$11.6K0.00%00.0%Unchanged
Financial Management Professionals, Inc.34$12.0K0.00%−31−47.7%Reduced
Solstein Capital, LLC34$12.0K0.00%00.0%Unchanged
Kilter Group LLC34$12.0K0.01%+4+13.3%Added
Raffa Wealth Management, LLC36$12.7K0.00%00.0%Unchanged
Princeton Global Asset Management LLC36$12.7K0.00%00.0%Unchanged
SJS Investment Consulting Inc.36$12.7K0.00%+29+414.3%Added
Ogorek Anthony Joseph38$13.0K0.00%−2−5.0%Reduced
Sunbelt Securities, Inc.39$13.8K0.00%+16+69.6%Added
Valley National Advisers Inc42$14.0K0.00%−1−2.3%Reduced
Monetary Solutions, Ltd40$14.1K0.01%+40New
Park Square Financial Group, LLC40$14.4K0.09%+40New
Truvestments Capital LLC41$14.5K0.00%00.0%Unchanged
Lodestone Wealth Management LLC41$14.5K0.01%+41New
McIlrath & Eck, LLC42$14.8K0.00%00.0%Unchanged
Lummis Asset Management, LP43$15.2K0.01%00.0%Unchanged
Mowery & Schoenfeld Wealth Management, LLC44$15.5K0.02%+9+25.7%Added
Bank of New Hampshire45$15.9K0.00%00.0%Unchanged
Howard Hughes Medical Institute46$16.2K0.01%00.0%Unchanged
United Community Bank48$16.9K0.01%00.0%Unchanged
Fortitude Family Office, LLC48$16.9K0.00%+3+6.7%Added
Montag A & Associates Inc48$16.9K0.00%+48New
Meeder Asset Management Inc49$17.3K0.00%00.0%Unchanged
Aspect Partners, LLC50$17.6K0.01%−1−2.0%Reduced
Ritter Daniher Financial Advisory LLC52$18.4K0.00%00.0%Unchanged
Group One Trading, L.P.52$18.4K0.00%+52New
Optima Capital LLC52$18.4K0.01%+52New
Transamerica Financial Advisors, Inc.52$18.4K0.00%+34+188.9%Added
Kingdom Financial Group LLC.53$18.7K0.01%+53New
UMA Financial Services, Inc.53$18.7K0.00%−7−11.7%Reduced
Sit Investment Associates Inc54$19.0K0.00%00.0%Unchanged
New Age Alpha Advisors, LLC56$19.8K0.00%+56New
Cornerstone Planning Group LLC60$20.0K0.00%−9−13.0%Reduced
SOA Wealth Advisors, LLC.57$20.1K0.00%−1−1.7%Reduced
St Germain D J Co Inc57$20.1K0.00%00.0%Unchanged
DT Investment Partners, LLC58$20.5K0.00%+38+190.0%Added
Asset Planning,Inc58$20.5K0.01%00.0%Unchanged
Hughes Financial Services, LLC62$21.9K0.00%+10+19.2%Added
Access Investment Management LLC62$22.1K0.01%00.0%Unchanged
Trust Co of Toledo NA63$22.2K0.00%−27−30.0%Reduced
Key Financial Inc64$22.6K0.00%00.0%Unchanged
Redmont Wealth Advisors LLC64$22.6K0.03%00.0%Unchanged
Union Savings Bank64$22.6K0.01%+64New
True Wealth Design, LLC66$23.3K0.01%+53+407.7%Added
Gunpowder Capital Management, LLC dba Oliver Wealth Management68$24.0K0.02%+68New
Optiver Holding B.V.70$24.7K0.00%+70New
Westside Investment Management, Inc.72$24.8K0.00%+2+2.9%Added
Capital Advisors, Ltd. LLC72$25.0K0.00%00.0%Unchanged
Alphadyne Asset Management LP71$25.1K0.00%+71New
Rational Advisors LLC72$25.4K0.00%+10+16.1%Added
HHM Wealth Advisors, LLC74$26.1K0.00%00.0%Unchanged
University of Texas/Texas Am Investment Managment Co76$26.8K0.00%+76New
Wealth Watch Advisors, INC77$27.2K0.01%+7+10.0%Added
Quent Capital, LLC78$27.5K0.00%+31+66.0%Added
Keating Financial Advisory Services, Inc.79$27.9K0.00%+79New
Anchor Investment Management, LLC80$28.2K0.00%00.0%Unchanged
DV Trading LLC80$28.2K0.00%+80New
Kemnay Advisory Services Inc.83$29.3K0.00%+83New
South State Corp.83$29.3K0.00%+20+31.7%Added
Bruce G. Allen Investments, LLC86$30.3K0.02%−9−9.5%Reduced
Eagle Bay Advisors LLC86$30.3K0.02%+86New
Washington Trust Advisors, Inc.88$31.1K0.00%00.0%Unchanged
Bell Investment Advisors, Inc88$31.1K0.00%−18−17.0%Reduced
Pinnacle Bancorp, Inc.89$31.4K0.01%−2−2.2%Reduced
Millstone Evans Group, LLC90$31.8K0.02%00.0%Unchanged
TSFG, LLC92$32.0K0.00%00.0%Unchanged
Wellington Grp LLC92$32.5K0.01%+92New
Mascoma Wealth Management LLC95$33.5K0.01%−16−14.4%Reduced
Medallion Wealth Advisors, LLC100$35.3K0.01%00.0%Unchanged
GW&K Investment Management, LLC103$36.0K0.00%−8−7.2%Reduced
Measured Wealth Private Client Group, LLC103$36.3K0.01%00.0%Unchanged
Cornerstone Financial Management LLC106$37.4K0.04%+106New
Financial Network Wealth Advisors LLC109$38.5K0.04%−10−8.4%Reduced
Salomon & Ludwin, LLC117$41.1K0.00%+33+39.3%Added
Frazier Financial Advisors, LLC118$41.6K0.02%00.0%Unchanged
Rossby Financial, LCC119$42.0K0.01%−304−71.9%Reduced
Prestige Wealth Management Group LLC127$44.8K0.01%+11+9.5%Added
Atlantic Edge Private Wealth Management, LLC128$45.2K0.01%+115+884.6%Added
Palladiem, LLC132$47.1K0.04%+132New
Boyd Watterson Asset Management LLC138$48.7K0.01%00.0%Unchanged
Coston, McIsaac & Partners140$49.0K0.01%00.0%Unchanged
Farmers & Merchants Investments Inc149$52.6K0.00%+5+3.5%Added
First United Bank Trust150$52.9K0.02%00.0%Unchanged
DAGCO, Inc.150$52.9K0.01%00.0%Unchanged
Pin Oak Investment Advisors Inc160$55.0K0.04%−2−1.2%Reduced
ZRC Wealth Management, LLC157$55.4K0.02%+10+6.8%Added
Nemes Rush Group LLC160$56.3K0.01%+5+3.2%Added
West Financial Advisors, LLC162$57.2K0.01%00.0%Unchanged
Loring Wolcott & Coolidge Fiduciary Advisors LLP174$57.6K0.00%+174New
Orion Capital Management LLC176$62.1K0.02%00.0%Unchanged