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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
Personal Cfo Solutions, LLC4,937$1.74M0.28%−257−4.9%Reduced
United Capital Financial Advisers, LLC4,932$1.74M0.01%−452−8.4%Reduced
Romano Brothers and Company4,907$1.73M0.20%+51+1.1%Added
Mesirow Financial Investment Management, Inc.4,891$1.73M0.04%−755−13.4%Reduced
Tealwood Asset Management Inc4,781$1.69M0.76%−968−16.8%Reduced
Concurrent Investment Advisors, LLC4,736$1.67M0.02%+4,051+591.4%Added
Plato Investment Management Ltd4,697$1.67M0.11%00.0%Unchanged
Skopos Labs, Inc.4,667$1.66M0.08%+1,880+67.5%Added
Greenland Capital Management LP4,700$1.66M0.24%+4,700New
Meeder Advisory Services, Inc.4,674$1.65M0.07%+192+4.3%Added
Altfest L J & Co Inc4,660$1.64M0.18%+2,837+155.6%Added
Fiduciary Alliance LLC4,612$1.63M0.11%−119−2.5%Reduced
Parkside Financial Bank & Trust4,604$1.62M0.12%+17+0.4%Added
Oak Thistle LLC4,580$1.62M0.22%−7,388−61.7%Reduced
Magnetar Financial LLC4,576$1.61M0.02%−17,520−79.3%Reduced
Enterprise Financial Services Corp4,536$1.60M0.81%+46+1.0%Added
Gibbs Wealth Management4,522$1.59M0.38%−1,008−18.2%Reduced
Syon Capital LLC4,494$1.59M0.08%+248+5.8%Added
Quadrant Capital Group LLC4,458$1.57M0.05%−758−14.5%Reduced
Cambria Investment Management, L.P.4,448$1.57M0.09%+1,336+42.9%Added
TD Waterhouse Canada Inc.4,442$1.57M0.01%+146+3.4%Added
BBR Partners, LLC4,381$1.55M0.08%−9−0.2%Reduced
Icon Wealth Advisors, LLC4,376$1.54M0.10%−2,389−35.3%Reduced
CX Institutional4,337$1.53M0.05%−5,200−54.5%Reduced
Canandaigua National Bank & Trust Co4,291$1.51M0.14%−192−4.3%Reduced
Ossiam4,253$1.50M0.03%−1,717−28.8%Reduced
Arkadios Wealth Advisors4,240$1.50M0.03%+1,925+83.2%Added
Private Wealth Asset Management, LLC4,235$1.49M0.16%−25−0.6%Reduced
Vestcor Inc4,230$1.49M0.04%00.0%Unchanged
NBT Bank N A4,210$1.49M0.10%−9−0.2%Reduced
Accredited Investors Inc.4,185$1.48M0.08%−9−0.2%Reduced
Evolve Private Wealth, LLC4,180$1.48M0.09%+4,180New
Clune & Associates, Ltd.4,179$1.47M0.32%−66−1.6%Reduced
QRG Capital Management, Inc.4,120$1.45M0.02%+470+12.9%Added
Logan Capital Management Inc4,078$1.44M0.06%00.0%Unchanged
Chesley Taft & Associates LLC4,078$1.44M0.06%+6+0.1%Added
Integrated Wealth Concepts LLC4,078$1.44M0.02%−3,566−46.7%Reduced
TCW Group Inc4,068$1.44M0.01%+4,068New
Stance Capital LLC4,015$1.42M0.52%+402+11.1%Added
Value Partners Investments Inc.4,007$1.42M0.11%+654+19.5%Added
Huntington National Bank3,994$1.41M0.01%+58+1.5%Added
Ellis Investment Partners, LLC3,987$1.41M0.25%+2+0.1%Added
Mattern Capital Management, LLC3,974$1.40M0.17%+33+0.8%Added
Auxier Asset Management3,972$1.40M0.20%+5+0.1%Added
Nordwand Advisors, LLC3,960$1.40M0.24%+50+1.3%Added
Norden Group LLC3,957$1.40M0.14%−1,519−27.7%Reduced
Americana Partners, LLC3,932$1.39M0.04%+590+17.7%Added
Rothschild Investment LLC3,930$1.39M0.08%+251+6.8%Added
Mission Wealth Management, LP3,909$1.38M0.03%+60+1.6%Added
Garrison Bradford & Associates Inc3,900$1.38M1.49%00.0%Unchanged
MOKAN Wealth Management Inc.3,900$1.37M0.61%+251+6.9%Added
Permanens Capital L.P.3,877$1.37M0.18%+3,877New
LGT Fund Management Co Ltd.3,818$1.36M0.11%00.0%Unchanged
Curated Wealth Partners LLC3,856$1.36M0.15%+709+22.5%Added
Highland Capital Management, LLC3,850$1.36M0.07%+3,850New
Dynasty Wealth Management, LLC3,836$1.35M0.01%−161−4.0%Reduced
Circle Wealth Management, LLC3,828$1.35M0.02%−454−10.6%Reduced
Nomura Asset Management International Inc.3,774$1.33M0.00%+3,774New
Greenleaf Trust3,726$1.31M0.01%−257−6.5%Reduced
Kovitz Investment Group Partners, LLC3,724$1.31M0.03%−355,035−99.0%Reduced
Silver Lake Advisory, LLC3,623$1.28M0.50%00.0%Unchanged
Pekin Hardy Strauss, Inc.3,616$1.28M0.12%−20−0.6%Reduced
Waterfront Wealth Inc.3,755$1.27M0.24%+17+0.5%Added
Belpointe Asset Management LLC3,599$1.27M0.05%+829+29.9%Added
First American Bank3,540$1.25M0.08%00.0%Unchanged
Canton Hathaway, LLC3,500$1.24M0.24%00.0%Unchanged
Beacon Pointe Advisors, LLC3,492$1.23M0.01%−97−2.7%Reduced
LGT Group Foundation3,400$1.21M0.01%−20−0.6%Reduced
ABN AMRO Bank N.V.3,402$1.20M0.01%00.0%Unchanged
Signaturefd, LLC3,377$1.19M0.02%+561+19.9%Added
Pictet & Cie (Europe) SA3,335$1.18M0.02%00.0%Unchanged
Vise Technologies, Inc.3,334$1.18M0.02%+1,073+47.5%Added
Raiffeisen Bank International AG3,290$1.17M0.02%−140−4.1%Reduced
Quantbot Technologies LP3,321$1.17M0.04%−9,820−74.7%Reduced
Dorsey & Whitney Trust CO LLC3,316$1.17M0.06%−174−5.0%Reduced
Pinnacle Financial Partners, Inc.3,293$1.16M0.01%+3,293New
Ceredex Value Advisors LLC3,291$1.16M0.03%−104,482−96.9%Reduced
Duncker Streett & Co Inc3,289$1.16M0.21%00.0%Unchanged
Pensionmark Financial Group, LLC3,264$1.15M0.02%−85−2.5%Reduced
Private Trust Co NA3,262$1.15M0.10%−72−2.2%Reduced
Exchange Traded Concepts, LLC3,225$1.14M0.01%+1,136+54.4%Added
Comprehensive Financial Management LLC3,197$1.13M0.03%00.0%Unchanged
U.S. Capital Wealth Advisors, LLC3,181$1.12M0.03%+16+0.5%Added
Rathbone Brothers plc3,174$1.12M0.00%00.0%Unchanged
NorthRock Partners, LLC3,155$1.11M0.02%−1,996−38.7%Reduced
DRW Securities, LLC3,132$1.11M0.08%−5,913−65.4%Reduced
Farther Finance Advisors, LLC3,130$1.10M0.01%+1,484+90.2%Added
Frank, Rimerman Advisors LLC3,121$1.10M0.07%+34+1.1%Added
Marble Harbor Investment Counsel, LLC3,110$1.10M0.12%00.0%Unchanged
Citrine Capital LLC3,100$1.09M0.51%00.0%Unchanged
Henshaw Capital LLC3,058$1.08M0.04%00.0%Unchanged
ProVise Management Group, LLC3,027$1.07M0.08%−242−7.4%Reduced
Arthur M. Cohen & Associates, LLC3,020$1.07M0.17%00.0%Unchanged
Guggenheim Capital LLC3,019$1.07M0.01%+3,019New
RBF Capital, LLC3,000$1.06M0.05%00.0%Unchanged
Alberta Investment Management Corp3,000$1.06M0.01%00.0%Unchanged
Oxford Financial Group Ltd2,993$1.06M0.06%+26+0.9%Added
First Financial Bankshares Inc2,978$1.05M0.02%−252−7.8%Reduced
Regal Investment Advisors LLC2,966$1.05M0.06%+156+5.6%Added
Perigon Wealth Management, LLC2,937$1.04M0.02%+538+22.4%Added