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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, Q1 2025

Institutional positions in Aon plc as of Mar 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
1,276
+99 vs. Q4 2024
Shares held
193.6M
+2.23M (+1.2%) vs. Q4 2024
Total value
$77.1B
+$8.37B (+12.2%) vs. Q4 2024
New holders
168
469 more added
Sold out
69
398 more reduced

19 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2024: 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 holdersQ1 2025: 1,276 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 heldQ1 2025: $77.1B
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, Q1 2025

Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q4 2024.

Institutions holding AON in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
National Bank of Canada211,789$84.5M0.10%−42,792−16.8%Reduced
Nicholas Company, Inc.197,787$78.9M1.37%−30,518−13.4%Reduced
Squarepoint Ops LLC195,966$78.2M0.19%+128,118+188.8%Added
Junto Capital Management LP188,993$75.4M1.73%+188,993New
State Board of Administration of Florida Retirement System187,332$74.8M0.15%00.0%Unchanged
Capital Group Private Client Services, Inc.185,244$73.9M0.72%−8,206−4.2%Reduced
Frontier Capital Management Co LLC178,972$71.4M0.78%+34,935+24.3%Added
CIBC Asset Management Inc176,073$70.2M0.23%−12,128−6.4%Reduced
Nomura Asset Management Co Ltd173,944$69.4M0.21%+4,351+2.6%Added
Adage Capital Partners GP, L.L.C.170,969$68.2M0.13%+78,900+85.7%Added
Voloridge Investment Management, LLC164,087$65.5M0.24%+31,935+24.2%Added
GFI Investment Counsel Ltd.163,336$65.2M7.58%+3,209+2.0%Added
Night Owl Capital Management, LLC158,553$63.3M7.91%+5,903+3.9%Added
New York State Teachers Retirement System156,468$62.4M0.14%−10,065−6.0%Reduced
CapitalatWork S.A.155,586$62.1M2.01%−1,361−0.9%Reduced
HSBC Holdings PLC152,392$60.3M0.04%+48,309+46.4%Added
Ycg, LLC148,016$59.1M4.63%−866−0.6%Reduced
Stifel Financial Corp144,087$57.5M0.06%−5,239−3.5%Reduced
Standard Life Aberdeen plc144,136$57.2M0.11%+74,913+108.2%Added
Storebrand Asset Management AS142,989$57.1M0.19%−8,368−5.5%Reduced
M.D. Sass Investors Services, Inc.140,434$56.0M4.93%−30,907−18.0%Reduced
Jefferies Financial Group Inc.135,419$54.0M0.93%+129,755+2,290.9%Added
Gluskin Sheff & Assoc Inc133,943$53.5M6.89%−19,882−12.9%Reduced
HM Payson & Co129,656$51.7M0.91%+1,413+1.1%Added
Korea Investment CORP129,475$51.7M0.13%+18,274+16.4%Added
Markel Group Inc.SuperinvestorMarkel Group129,450$51.7M0.46%+3,250+2.6%Added
Manufacturers Life Insurance Company, The128,655$51.3M0.05%−860,330−87.0%Reduced
Pensioenfonds Rail & Ov128,522$51.3M3.55%−5,253−3.9%Reduced
Colony Group, LLC125,834$50.2M0.13%+27,272+27.7%Added
Davis R M Inc125,288$50.0M1.00%−381−0.3%Reduced
Ceredex Value Advisors LLC125,159$49.9M1.09%−2,993−2.3%Reduced
Vontobel Holding Ltd.122,598$48.9M0.18%−28,817−19.0%Reduced
TCTC Holdings, LLC120,061$47.9M1.69%+350.0%Added
Mitsubishi UFJ Trust & Banking Corp118,184$47.2M0.12%−3,018−2.5%Reduced
State of Tennessee, Treasury Department117,618$46.9M0.18%−5,230−4.3%Reduced
Petrus Trust Company, LTA117,500$46.9M4.38%00.0%Unchanged
Broad Run Investment Management, LLC117,085$46.7M7.80%−44,091−27.4%Reduced
The PNC Financial Services Group, Inc.116,802$46.6M0.02%−16,144−12.1%Reduced
Chevy Chase Trust Holdings, Inc.116,496$46.5M0.15%−64−0.1%Reduced
Schroder Investment Management Group115,313$45.5M0.05%+11,134+10.7%Added
Schonfeld Strategic Advisors LLC113,994$45.5M0.31%+74,361+187.6%Added
Summit Trail Advisors, LLC111,380$44.5M1.47%−1,686−1.5%Reduced
State of Wisconsin Investment Board111,280$44.4M0.11%+3,645+3.4%Added
APG Asset Management N.V.120,000$44.3M0.14%−1,700−1.4%Reduced
Spears Abacus Advisors LLC107,698$43.0M0.93%−8,312−7.2%Reduced
Susquehanna Fundamental Investments, LLC105,409$42.1M0.70%+200+0.2%Added
Ironvine Capital Partners, LLC105,063$41.9M4.55%−1,874−1.8%Reduced
Obermeyer Wood Investment Counsel, LLLP104,919$41.9M2.23%−3,171−2.9%Reduced
Pictet Asset Management Holding SA102,615$41.0M0.05%−39,567−27.8%Reduced
Central Securities Corp100,000$39.9M3.80%00.0%Unchanged
Border to Coast Pensions Partnership Ltd98,017$39.1M0.80%+12,105+14.1%Added
Gateway Investment Advisers LLC93,632$37.4M0.43%+108+0.1%Added
Zurcher Kantonalbank (Zurich Cantonalbank)91,624$36.6M0.10%−4,924−5.1%Reduced
Royal London Asset Management Ltd90,223$36.0M0.09%+7,505+9.1%Added
Oribel Capital Management, LP90,100$36.0M4.47%+29,942+49.8%Added
Hudson Bay Capital Management LP90,070$35.9M0.23%+90,070New
Treasurer of the State of North Carolina89,868$35.9M0.14%−8,837−9.0%Reduced
Danske Bank A/S88,701$35.4M0.11%−30,932−25.9%Reduced
Dudley & Shanley, Inc.88,637$35.4M5.57%−5,190−5.5%Reduced
CI Private Wealth, LLC88,362$35.3M0.06%−7,698−8.0%Reduced
Asset Management One Co.,Ltd.86,958$34.7M0.12%+3,857+4.6%Added
LFL Advisers, LLC85,047$33.9M14.85%−2,249−2.6%Reduced
TD Asset Management Inc84,295$33.6M0.03%−4,408−5.0%Reduced
KLP Kapitalforvaltning AS84,252$33.6M0.16%+100+0.1%Added
Canoe Financial LP83,679$33.4M0.54%+25,570+44.0%Added
Advisors Capital Management, LLC83,379$33.3M0.51%+1,614+2.0%Added
Public Employees Retirement System of Ohio82,520$32.9M0.12%−2,587−3.0%Reduced
D. E. Shaw & Co., Inc.81,928$32.7M0.04%−116,674−58.7%Reduced
Capital International Sarl75,771$30.2M0.68%+7,631+11.2%Added
Mn Services Vermogensbeheer B.V.74,000$29.5M0.23%−4,700−6.0%Reduced
Teacher Retirement System of Texas73,217$29.2M0.12%+367+0.5%Added
GM Advisory Group, Inc.73,209$29.2M1.58%−12,980−15.1%Reduced
Franklin Resources Inc73,159$29.2M0.01%+5,854+8.7%Added
Clark Capital Management Group, Inc.71,746$28.6M0.21%−85,879−54.5%Reduced
Victory Capital Management Inc71,116$28.4M0.03%−244−0.3%Reduced
Rafferty Asset Management, LLC70,901$28.3M0.12%−5,399−7.1%Reduced
Capital International Inc70,751$28.2M0.34%+848+1.2%Added
Williams Jones Wealth Management, LLC.70,551$28.2M0.36%−5,281−7.0%Reduced
TownSquare Capital, LLC69,003$27.5M0.29%+55,813+423.1%Added
Lighthouse Investment Partners, LLC68,136$27.2M1.24%+68,136New
Federation des caisses Desjardins du Quebec67,862$27.1M0.13%+2,478+3.8%Added
LPL Financial LLC67,893$27.1M0.01%−532−0.8%Reduced
JLB & Associates Inc67,675$27.0M3.77%−640−0.9%Reduced
State of New Jersey Common Pension Fund D65,619$26.2M0.12%−6,658−9.2%Reduced
Hantz Financial Services, Inc.65,440$26.1M0.46%+45,061+221.1%Added
Aquatic Capital Management LLC64,719$25.8M0.66%+64,719New
Lansforsakringar Fondforvaltning AB (publ)64,476$25.7M0.16%−1,350−2.1%Reduced
Brinker Capital Investments, LLC64,295$25.7M0.25%+253+0.4%Added
Orion Portfolio Solutions, LLC64,295$25.7M0.25%+253+0.4%Added
STRS Ohio63,919$25.5M0.11%−517−0.8%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund63,285$25.3M0.30%+7,600+13.6%Added
Jupiter Asset Management Ltd62,785$25.1M0.24%+62,785New
Financiere des Professionnels - Fonds d,investissement inc.61,543$24.6M1.59%−4,214−6.4%Reduced
Handelsbanken Fonder AB59,474$23.7M0.10%+136+0.2%Added
Ninety One UK Ltd59,422$23.7M0.07%−2,342−3.8%Reduced
State of Michigan Retirement System58,658$23.4M0.14%00.0%Unchanged
Public Sector Pension Investment Board57,858$23.1M0.10%+1,709+3.0%Added
Glenmede Trust Co NA57,256$22.9M0.12%+22,513+64.8%Added
Arizona State Retirement System57,121$22.8M0.15%+854+1.5%Added
Nisa Investment Advisors, LLC56,519$22.6M0.11%−79,164−58.3%Reduced