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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, Q3 2025

Institutional positions in Aon plc as of Sep 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
1,255
+42 vs. Q2 2025
Shares held
186.0M
−1.74M (−0.9%) vs. Q2 2025
Total value
$66.3B
−$638.0M (−1.0%) vs. Q2 2025
New holders
127
477 more added
Sold out
85
401 more reduced

20 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 1,255 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 heldQ3 2025: $66.3B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q2 2025.

Institutions holding AON in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Citizens Financial Group Inc25,784$9.19M0.13%−492−1.9%Reduced
M&T Bank Corp25,778$9.19M0.03%−3,696−12.5%Reduced
Captrust Financial Advisors25,490$9.09M0.02%−758−2.9%Reduced
Fifth Third Bancorp24,985$8.91M0.03%−462−1.8%Reduced
Marks Group Wealth Management, Inc24,771$8.83M0.82%−859−3.4%Reduced
Oregon Public Employees Retirement Fund24,695$8.81M0.11%+6,043+32.4%Added
YHB Investment Advisors, Inc.24,535$8.75M0.64%+30+0.1%Added
Clifford Swan Investment Counsel LLC23,896$8.52M0.28%+5,944+33.1%Added
Motley Fool Wealth Management, LLC23,412$8.35M0.57%−3,078−11.6%Reduced
Mutual of America Capital Management LLC23,374$8.33M0.09%−1,389−5.6%Reduced
Intermede Investment Partners Ltd23,059$8.22M0.34%−931−3.9%Reduced
CIBC Private Wealth Group, LLC22,930$8.18M0.01%+252+1.1%Added
Ethic Inc.22,580$8.05M0.13%−2,688−10.6%Reduced
Mirae Asset Global ETFs Holdings Ltd.22,283$7.95M0.01%−957−4.1%Reduced
Haverford Financial Services, Inc.22,275$7.94M2.23%−827−3.6%Reduced
Live Oak Private Wealth LLC22,142$7.90M1.10%+345+1.6%Added
Magnetar Financial LLC22,096$7.88M0.05%+22,096New
Carderock Capital Management Inc21,641$7.72M1.88%+1,396+6.9%Added
Fiduciary Group LLC21,629$7.71M0.68%−278−1.3%Reduced
Dash Acquisitions Inc.23,575$7.69M1.53%−312−1.3%Reduced
Violich Capital Management, Inc.21,008$7.49M0.89%−300−1.4%Reduced
Old National Bancorp20,961$7.47M0.13%+16,268+346.6%Added
Bridgewater Advisors Inc.21,841$7.43M0.51%+154+0.7%Added
Prudential PLC20,800$7.42M0.05%−1,574−7.0%Reduced
Susquehanna Portfolio Strategies, LLC20,483$7.30M0.12%−7,504−26.8%Reduced
Gerber, LLC20,453$7.29M4.58%−1,260−5.8%Reduced
Employees Retirement System of Texas20,174$7.19M0.06%00.0%Unchanged
Kestra Advisory Services, LLC20,003$7.13M0.03%+234+1.2%Added
ASR Vermogensbeheer N.V.19,799$7.06M0.09%−66−0.3%Reduced
Truist Financial Corp19,722$7.03M0.01%−280−1.4%Reduced
Strategy Asset Managers LLC19,337$6.90M1.24%+186+1.0%Added
Nordea Investment Management AB19,215$6.82M0.01%+2,153+12.6%Added
Bell Asset Management Ltd19,075$6.80M1.86%−5,954−23.8%Reduced
KWMG, LLC18,989$6.77M0.59%+501+2.7%Added
Commerce Bank18,798$6.70M0.04%−90−0.5%Reduced
Morningstar Investment Management LLC18,692$6.67M0.25%+15,391+466.3%Added
Bleakley Financial Group, LLC18,641$6.65M0.15%+227+1.2%Added
Berman McAleer LLC18,129$6.46M0.90%+18,129New
Fayez Sarofim & Co18,039$6.43M0.01%+118+0.7%Added
Northwestern Mutual Wealth Management Co17,498$6.24M0.00%−3,213−15.5%Reduced
Johnson Investment Counsel Inc17,421$6.21M0.05%−670−3.7%Reduced
Pacer Advisors, Inc.17,364$6.19M0.02%−3,887−18.3%Reduced
Avanza Fonder AB17,132$6.11M0.16%+1,850+12.1%Added
Teachers Retirement System of the State of Kentucky16,947$6.04M0.05%00.0%Unchanged
Biltmore Family Office, LLC16,549$5.90M0.84%00.0%Unchanged
Qsemble Capital Management, LP16,467$5.87M0.57%+16,467New
Cresset Asset Management, LLC16,377$5.84M0.03%+2,286+16.2%Added
Atria Investments LLC16,241$5.79M0.07%−1,128−6.5%Reduced
Mizuho Securities USA LLC15,705$5.76M0.12%+779+5.2%Added
Sanctuary Advisors, LLC15,898$5.67M0.03%−741−4.5%Reduced
Interval Partners, LP15,873$5.66M0.12%+15,873New
Ilmarinen Mutual Pension Insurance Co15,272$5.45M0.04%00.0%Unchanged
Pine Valley Investments Ltd Liability Co15,206$5.42M0.28%+1,257+9.0%Added
La Banque Postale Asset Management SA15,152$5.40M0.07%+239+1.6%Added
Mediolanum International Funds Ltd15,144$5.37M0.06%+10,937+260.0%Added
IMC-Chicago, LLC14,736$5.25M0.09%+4,533+44.4%Added
Wesbanco Bank Inc14,657$5.23M0.15%+641+4.6%Added
GWM Advisors LLC14,619$5.21M0.02%−85−0.6%Reduced
Susquehanna Fundamental Investments, LLC14,463$5.16M0.20%−83,930−85.3%Reduced
Allianz Asset Management GmbH14,182$5.06M0.01%−57,825−80.3%Reduced
Pittenger & Anderson Inc13,815$4.93M0.18%00.0%Unchanged
Arlington Partners LLC13,542$4.83M1.67%+838+6.6%Added
Illinois Municipal Retirement Fund13,481$4.81M0.06%+1,755+15.0%Added
Jasper Ridge Partners, L.P.13,390$4.77M0.11%00.0%Unchanged
Wealthfront Advisers LLC13,383$4.77M0.01%+1,224+10.1%Added
Kentucky Retirement Systems13,183$4.70M0.13%+601+4.8%Added
Sequoia Financial Advisors, LLC13,159$4.69M0.03%−145−1.1%Reduced
MML Investors Services, LLC13,142$4.69M0.01%+676+5.4%Added
Quantbot Technologies LP13,141$4.69M0.13%−15,516−54.1%Reduced
Modera Wealth Management, LLC13,128$4.68M0.05%−144−1.1%Reduced
ISAM Funds (UK) Ltd13,109$4.67M0.96%+13,109New
Comgest Global Investors S.A.S.13,100$4.67M0.08%+13,100New
Allspring Global Investments Holdings, LLC12,932$4.66M0.01%+3,206+33.0%Added
Mercer Global Advisors Inc13,023$4.64M0.01%+4,874+59.8%Added
Federation des caisses Desjardins du Quebec12,979$4.63M0.02%+762+6.2%Added
Yacktman Asset Management LP12,915$4.61M0.06%00.0%Unchanged
Regency Capital Management Inc.12,862$4.59M2.18%−400−3.0%Reduced
Ostrum Asset Management12,699$4.53M0.20%+3,178+33.4%Added
Diversified Trust Co12,686$4.52M0.09%+5,200+69.5%Added
Assetmark, Inc12,625$4.50M0.01%+1,380+12.3%Added
Capital Planning Advisors, LLC12,363$4.41M0.61%−1,125−8.3%Reduced
Accurate Wealth Management, LLC12,142$4.38M0.58%−35−0.3%Reduced
Ieq Capital, LLC12,239$4.36M0.01%+11,007+893.4%Added
Buckhead Capital Management LLC12,151$4.33M1.57%+115+1.0%Added
Machina Capital S.A.S.12,134$4.33M0.76%+9,098+299.7%Added
Bessemer Group Inc12,082$4.31M0.01%+824+7.3%Added
Oak Thistle LLC11,968$4.27M0.65%+11,968New
Simplex Trading, LLC11,892$4.24M0.09%+11,892New
Regions Financial Corp11,678$4.16M0.03%−3,467−22.9%Reduced
Callan Family Office, LLC11,675$4.16M0.13%+8,034+220.7%Added
Point72 (DIFC) Ltd11,641$4.15M0.29%+11,641New
Ar Asset Management Inc11,618$4.14M0.87%00.0%Unchanged
Norinchukin Bank, The11,563$4.12M0.06%+291+2.6%Added
Savant Capital, LLC11,559$4.12M0.03%+101+0.9%Added
Janney Montgomery Scott LLC11,556$4.12M0.01%+78+0.7%Added
CWM, LLC11,460$4.09M0.01%+95+0.8%Added
Wiley Bros.-Aintree Capital, LLC11,399$4.07M0.03%+1,662+17.1%Added
Louisiana State Employees Retirement System11,300$4.03M0.07%−100−0.9%Reduced
NFP Retirement, Inc.11,282$4.02M0.26%−61−0.5%Reduced
First Foundation Advisors11,181$3.99M0.15%−2,300−17.1%Reduced