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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 2024

Institutional positions in Aon plc as of Dec 31, 2024. 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
1,196
+61 vs. Q3 2024
Shares held
192.5M
+2.06M (+1.1%) vs. Q3 2024
Total value
$69.1B
+$3.12B (+4.7%) vs. Q3 2024
New holders
143
418 more added
Sold out
82
408 more reduced

14 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2024: 1,196 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 2024: $69.1B
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, Q4 2024

Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q3 2024.

Institutions holding AON in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
CIBC Asset Management Inc188,201$67.5M0.22%+2,045+1.1%Added
Moore Capital Management, LP187,376$67.3M1.26%+37,475+25.0%Added
State Board of Administration of Florida Retirement System187,332$67.3M0.13%−1,511−0.8%Reduced
M.D. Sass Investors Services, Inc.171,341$61.5M4.71%+171,341New
Nomura Asset Management Co Ltd169,593$60.9M0.18%+3,852+2.3%Added
New York State Teachers Retirement System166,533$59.8M0.13%−2,771−1.6%Reduced
Alyeska Investment Group, L.P.165,734$59.5M0.22%+162,669+5,307.3%Added
Assenagon Asset Management S.A.161,806$58.1M0.10%−383,404−70.3%Reduced
Broad Run Investment Management, LLC161,176$57.9M7.86%−8,450−5.0%Reduced
GFI Investment Counsel Ltd.160,127$57.5M6.60%+4,973+3.2%Added
Clark Capital Management Group, Inc.157,625$56.6M0.40%+152,947+3,269.5%Added
CapitalatWork S.A.156,947$56.4M1.82%−372−0.2%Reduced
Gluskin Sheff & Assoc Inc153,825$55.2M6.62%+12,808+9.1%Added
Night Owl Capital Management, LLC152,650$54.8M7.08%+6,900+4.7%Added
Vontobel Holding Ltd.151,415$54.4M0.19%+55,094+57.2%Added
Storebrand Asset Management AS151,357$54.4M0.17%−2,553−1.7%Reduced
Stifel Financial Corp149,326$53.6M0.06%−4,185−2.7%Reduced
Ycg, LLC148,882$53.5M4.25%−490−0.3%Reduced
Frontier Capital Management Co LLC144,037$51.7M0.49%−8,960−5.9%Reduced
Pictet Asset Management Holding SA142,182$51.1M0.06%+8,399+6.3%Added
Renaissance Technologies LLC137,401$49.3M0.07%−43,900−24.2%Reduced
Nisa Investment Advisors, LLC135,683$48.7M0.19%+80,584+146.3%Added
Pensioenfonds Rail & Ov133,775$48.0M3.26%+35,201+35.7%Added
The PNC Financial Services Group, Inc.132,946$47.7M0.03%−1,443−1.1%Reduced
Voloridge Investment Management, LLC132,152$47.5M0.17%−132,621−50.1%Reduced
Prana Capital Management, LP131,163$47.1M2.25%−131,771−50.1%Reduced
Citigroup Inc128,803$46.3M0.04%−939−0.7%Reduced
HM Payson & Co128,243$46.1M0.78%+847+0.7%Added
Ceredex Value Advisors LLC128,152$46.0M0.93%−19,647−13.3%Reduced
Markel Group Inc.SuperinvestorMarkel Group126,200$45.3M0.40%+6,050+5.0%Added
Davis R M Inc125,669$45.1M0.88%−201−0.2%Reduced
State of Tennessee, Treasury Department122,848$44.1M0.16%+16,399+15.4%Added
Mitsubishi UFJ Trust & Banking Corp121,202$43.5M0.10%+7,582+6.7%Added
TCTC Holdings, LLC120,026$43.1M1.55%+260.0%Added
Danske Bank A/S119,633$43.0M0.13%+35,121+41.6%Added
APG Asset Management N.V.121,700$42.2M0.12%+121,700New
Petrus Trust Company, LTA117,500$42.2M4.08%−10,000−7.8%Reduced
Chevy Chase Trust Holdings, Inc.116,560$41.9M0.13%−2,989−2.5%Reduced
Spears Abacus Advisors LLC116,010$41.7M0.86%−15,644−11.9%Reduced
Summit Trail Advisors, LLC113,066$40.6M1.50%−33,192−22.7%Reduced
Korea Investment CORP111,201$39.9M0.09%−47,237−29.8%Reduced
Obermeyer Wood Investment Counsel, LLLP108,090$38.8M2.02%−2,074−1.9%Reduced
State of Wisconsin Investment Board107,635$38.7M0.10%−4,166−3.7%Reduced
Ironvine Capital Partners, LLC106,937$38.4M4.12%+288+0.3%Added
Susquehanna Fundamental Investments, LLC105,209$37.8M0.63%+105,209New
Schroder Investment Management Group104,179$37.3M0.04%+15,495+17.5%Added
HSBC Holdings PLC104,083$37.2M0.02%+56,314+117.9%Added
Central Securities Corp100,000$35.9M3.43%00.0%Unchanged
Treasurer of the State of North Carolina98,705$35.5M0.14%+2,540+2.6%Added
Colony Group, LLC98,562$35.4M0.09%−33,937−25.6%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)96,548$34.7M0.10%+20,942+27.7%Added
CI Private Wealth, LLC96,060$33.8M0.06%−2,011−2.1%Reduced
Dudley & Shanley, Inc.93,827$33.7M5.20%−4,613−4.7%Reduced
Gateway Investment Advisers LLC93,524$33.6M0.37%−214−0.2%Reduced
Adage Capital Partners GP, L.L.C.92,069$33.1M0.06%+92,069New
TD Asset Management Inc88,703$31.9M0.03%+9,410+11.9%Added
Susquehanna International Group, LLP87,838$31.5M0.05%+29,313+50.1%Added
LFL Advisers, LLC87,296$31.4M12.21%+1,140+1.3%Added
Allianz Asset Management GmbH86,267$31.0M0.04%+5,655+7.0%Added
GM Advisory Group, Inc.86,189$31.0M1.71%−5,655−6.2%Reduced
Border to Coast Pensions Partnership Ltd85,912$30.8M0.60%00.0%Unchanged
Public Employees Retirement System of Ohio85,107$30.6M0.11%−4,801−5.3%Reduced
KLP Kapitalforvaltning AS84,152$30.2M0.14%+84,152New
Asset Management One Co.,Ltd.83,101$29.9M0.10%+2,093+2.6%Added
Royal London Asset Management Ltd82,718$29.7M0.07%+2,162+2.7%Added
Bank of Nova Scotia81,878$29.4M0.05%+54,593+200.1%Added
Advisors Capital Management, LLC81,765$29.4M0.46%+43+0.1%Added
Mn Services Vermogensbeheer B.V.78,700$28.3M0.19%+1,500+1.9%Added
Rafferty Asset Management, LLC76,300$27.4M0.10%+2,648+3.6%Added
Williams Jones Wealth Management, LLC.75,832$27.2M0.33%−1,653−2.1%Reduced
LTS One Management LP75,000$26.9M7.51%+15,000+25.0%Added
Teacher Retirement System of Texas72,850$26.2M0.09%+54,921+306.3%Added
State of New Jersey Common Pension Fund D72,277$26.0M0.10%−441−0.6%Reduced
Victory Capital Management Inc71,360$25.6M0.03%−635−0.9%Reduced
Capital International Inc69,903$25.1M0.30%+4,437+6.8%Added
Standard Life Aberdeen plc69,223$24.7M0.05%−11,602−14.4%Reduced
LPL Financial LLC68,425$24.6M0.01%+5,660+9.0%Added
JLB & Associates Inc68,315$24.5M3.33%−998−1.4%Reduced
Capital International Sarl68,140$24.5M0.56%+5,428+8.7%Added
Squarepoint Ops LLC67,848$24.4M0.06%+38,069+127.8%Added
Franklin Resources Inc67,305$24.2M0.01%+10,192+17.8%Added
Millennium Management LLC66,429$23.9M0.02%−227,161−77.4%Reduced
Lansforsakringar Fondforvaltning AB (publ)65,826$23.6M0.13%+65,826New
Financiere des Professionnels - Fonds d,investissement inc.65,757$23.6M1.65%+1,784+2.8%Added
Federation des caisses Desjardins du Quebec65,384$23.5M0.12%−2,570−3.8%Reduced
Two Sigma Advisers, LP65,300$23.5M0.05%−18,400−22.0%Reduced
STRS Ohio64,436$23.1M0.09%−2,658−4.0%Reduced
Brinker Capital Investments, LLC64,042$23.0M0.23%−5,381−7.8%Reduced
Orion Portfolio Solutions, LLC64,042$23.0M0.23%−5,381−7.8%Reduced
Ninety One UK Ltd61,764$22.2M0.06%+8,682+16.4%Added
CIBC World Markets Corp61,174$22.0M0.13%−29,654−32.6%Reduced
AMF Pensionsforsakring AB60,279$21.7M0.15%00.0%Unchanged
Oribel Capital Management, LP60,158$21.6M1.47%−93,842−60.9%Reduced
Handelsbanken Fonder AB59,338$21.3M0.08%+4,860+8.9%Added
State of Michigan Retirement System58,658$21.1M0.11%−500−0.8%Reduced
Canoe Financial LP58,109$20.9M0.34%+5,000+9.4%Added
Abner Herrman & Brock LLC57,087$20.5M2.55%−104−0.2%Reduced
MetLife Investment Management56,892$20.4M0.11%+768+1.4%Added
Picton Mahoney Asset Management56,667$20.4M0.77%+8,290+17.1%Added
Pictet & Cie (Europe) SA56,496$20.3M0.45%−11,611−17.0%Reduced