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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
Wealthspire Advisors, LLC230,857$82.3M0.43%−2,305−1.0%Reduced
Scharf Investments, LLC220,088$78.5M1.97%−9,366−4.1%Reduced
Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management213,450$76.1M4.13%00.0%Unchanged
Moore Capital Management, LP212,192$75.7M1.50%+11,168+5.6%Added
Verition Fund Management LLC205,731$73.4M0.42%−48,145−19.0%Reduced
Jane Street Group, LLC202,749$72.3M0.08%+164,962+436.6%Added
CapitalatWork S.A.192,218$68.5M1.99%+13,493+7.5%Added
State Board of Administration of Florida Retirement System185,182$66.0M0.12%−4,440−2.3%Reduced
HSBC Holdings PLC184,789$65.6M0.04%+16,030+9.5%Added
Point72 Asset Management, L.P.182,053$64.9M0.14%+182,053New
Nicholas Company, Inc.181,427$64.7M1.10%00.0%Unchanged
Arrowstreet Capital, Limited Partnership177,085$63.1M0.04%+98,332+124.9%Added
Gluskin Sheff & Assoc Inc169,774$60.5M7.65%+12,388+7.9%Added
Nomura Asset Management Co Ltd167,632$59.8M0.16%−7,072−4.0%Reduced
GFI Investment Counsel Ltd.167,596$59.8M6.22%+986+0.6%Added
National Bank of Canada161,524$57.6M0.07%−67,679−29.5%Reduced
CIBC Asset Management Inc159,912$57.0M0.16%−19,677−11.0%Reduced
New York State Teachers Retirement System155,822$55.6M0.11%−558−0.4%Reduced
Standard Life Aberdeen plc156,191$55.4M0.09%+4,005+2.6%Added
Ycg, LLC151,264$53.9M4.05%+5,072+3.5%Added
Ninety One North America, Inc.145,307$51.8M2.35%+30,522+26.6%Added
Storebrand Asset Management AS144,362$51.5M0.14%+455+0.3%Added
Stifel Financial Corp143,574$51.2M0.05%−740−0.5%Reduced
Gillson Capital LP140,661$50.2M4.35%+49,780+54.8%Added
Frontier Capital Management Co LLC139,453$49.7M0.45%−47,391−25.4%Reduced
Petrus Trust Company, LTA136,513$48.7M5.33%+16,928+14.2%Added
State of Tennessee, Treasury Department134,987$48.1M0.16%+2,929+2.2%Added
HM Payson & Co133,021$47.4M0.68%−485−0.4%Reduced
Markel Group Inc.SuperinvestorMarkel Group129,800$46.3M0.38%00.0%Unchanged
AMF Pensionsforsakring AB126,792$45.2M0.29%00.0%Unchanged
Davis R M Inc126,242$45.0M0.79%+986+0.8%Added
Korea Investment CORP125,553$44.8M0.09%+20,043+19.0%Added
Mitsubishi UFJ Trust & Banking Corp121,336$43.3M0.10%+5,894+5.1%Added
Toroso Investments, LLC121,059$43.2M0.18%+7,402+6.5%Added
Jefferies Financial Group Inc.120,648$43.0M0.39%+118,047+4,538.5%Added
TCTC Holdings, LLC120,061$42.8M1.27%00.0%Unchanged
Danske Bank A/S117,932$42.1M0.10%+13,050+12.4%Added
The PNC Financial Services Group, Inc.117,837$42.0M0.03%+3,119+2.7%Added
Schonfeld Strategic Advisors LLC115,509$41.2M0.29%+43,733+60.9%Added
AQR Capital Management LLC114,388$40.7M0.03%+72,263+171.5%Added
Ninety One UK Ltd114,062$40.7M0.09%+56,113+96.8%Added
Chevy Chase Trust Holdings, Inc.113,136$40.3M0.11%−3,999−3.4%Reduced
Summit Trail Advisors, LLC112,301$40.0M0.55%−2,074−1.8%Reduced
Qube Research & Technologies Ltd110,287$39.3M0.06%−114,495−50.9%Reduced
Colony Group, LLC110,111$39.2M0.06%+10,062+10.1%Added
State of Wisconsin Investment Board109,443$39.0M0.09%+3,737+3.5%Added
Spears Abacus Advisors LLC108,113$38.6M0.73%−210−0.2%Reduced
Ceredex Value Advisors LLC107,773$38.4M0.89%−28,340−20.8%Reduced
M.D. Sass Investors Services, Inc.107,298$38.3M3.12%−3,707−3.3%Reduced
Night Owl Capital Management, LLC107,023$38.2M4.16%+938+0.9%Added
Broad Run Investment Management, LLC106,617$38.0M6.22%−6,620−5.8%Reduced
HRT Financial LP105,943$37.8M0.14%+105,943New
APG Asset Management N.V.124,403$37.8M0.11%−697−0.6%Reduced
Ironvine Capital Partners, LLC105,375$37.6M3.74%−371−0.4%Reduced
Border to Coast Pensions Partnership Ltd102,557$36.6M0.64%00.0%Unchanged
Obermeyer Wood Investment Counsel, LLLP101,073$36.0M1.69%−1,429−1.4%Reduced
Teacher Retirement System of Texas100,334$35.8M0.14%+4,822+5.0%Added
Central Securities Corp100,000$35.7M2.94%00.0%Unchanged
Zurcher Kantonalbank (Zurich Cantonalbank)99,836$35.6M0.08%+3,761+3.9%Added
Squarepoint Ops LLC98,196$35.0M0.07%+33,189+51.1%Added
Capital International Inc96,236$34.3M0.27%+12,886+15.5%Added
Two Sigma Investments, LP95,683$34.1M0.05%−533,872−84.8%Reduced
Asset Management One Co.,Ltd.94,762$33.8M0.10%+4,812+5.3%Added
Nippon Life Global Investors Americas, Inc.94,730$33.8M1.42%+59,620+169.8%Added
Treasurer of the State of North Carolina94,405$33.7M0.10%−3,679−3.8%Reduced
KLP Kapitalforvaltning AS94,352$33.6M0.13%+9,100+10.7%Added
Gateway Investment Advisers LLC93,244$33.2M0.32%−124−0.1%Reduced
Pictet Asset Management Holding SA92,049$32.8M0.03%+516+0.6%Added
LFL Advisers, LLC90,146$32.1M11.13%+2,615+3.0%Added
Schroder Investment Management Group90,560$32.1M0.03%−2,523−2.7%Reduced
Advisors Capital Management, LLC89,364$31.9M0.39%+1,808+2.1%Added
Dudley & Shanley, Inc.88,732$31.6M5.09%+100+0.1%Added
Royal London Asset Management Ltd86,541$30.9M0.07%−307−0.4%Reduced
Capital International Sarl84,764$30.2M0.52%+5,502+6.9%Added
Public Employees Retirement System of Ohio84,444$30.1M0.10%−2,282−2.6%Reduced
Swedbank AB82,916$29.6M0.03%+24,429+41.8%Added
Gotham Asset Management, LLC82,600$29.5M0.13%+47,900+138.0%Added
D. E. Shaw & Co., Inc.79,240$28.3M0.02%−93,729−54.2%Reduced
Canoe Financial LP79,229$28.3M0.40%−7,600−8.8%Reduced
Franklin Resources Inc78,227$27.9M0.01%+7,340+10.4%Added
TD Asset Management Inc78,079$27.8M0.02%−102−0.1%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund76,885$27.4M0.24%+3,800+5.2%Added
Wealth Enhancement Advisory Services, LLC73,451$27.0M0.04%+46,347+171.0%Added
Mn Services Vermogensbeheer B.V.73,600$26.2M0.17%+900+1.2%Added
Quantinno Capital Management LP72,848$26.0M0.07%+32,804+81.9%Added
CI Private Wealth, LLC72,444$25.8M0.04%−8,102−10.1%Reduced
State of New Jersey Common Pension Fund D72,125$25.7M0.09%+6,506+9.9%Added
Rafferty Asset Management, LLC71,760$25.6M0.08%−300.0%Reduced
Caisse de Depot Et Placement du Quebec71,268$25.4M0.05%+71,268New
Twinbeech Capital LP70,956$25.3M1.00%+70,956New
LPL Financial LLC70,388$25.1M0.01%+9,170+15.0%Added
STRS Ohio69,497$24.8M0.09%−1,742−2.4%Reduced
Intech Investment Management LLC68,456$24.4M0.22%+22,899+50.3%Added
Healthcare of Ontario Pension Plan Trust Fund67,536$24.1M0.04%+58,929+684.7%Added
Victory Capital Management Inc66,652$23.8M0.01%−2,045−3.0%Reduced
JLB & Associates Inc66,161$23.6M3.10%−807−1.2%Reduced
Zurich Insurance Group Ltd64,714$23.1M0.16%+64,714New
Lansforsakringar Fondforvaltning AB (publ)63,818$22.8M0.12%+1,891+3.1%Added
MetLife Investment Management62,591$22.3M0.11%−1,164−1.8%Reduced
LTS One Management LP62,500$22.3M7.94%−19,250−23.5%Reduced