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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, Q2 2025

Institutional positions in Aon plc as of Jun 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
1,233
−27 vs. Q1 2025
Shares held
194.2M
+975.4K (+0.5%) vs. Q1 2025
Total value
$69.3B
−$7.65B (−9.9%) vs. Q1 2025
New holders
108
432 more added
Sold out
135
470 more reduced

16 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2025: 1,232 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: 1,024 institutionsQ3 2023: 1,048 institutionsQ4 2023: 1,066 institutionsQ1 2024: 1,086 institutionsQ2 2024: 1,110 institutionsQ3 2024: 1,148 institutionsQ4 2024: 1,195 institutionsQ1 2025: 1,275 institutionsQ2 2025: 1,232 institutionsQ3 2025: 1,254 institutionsQ4 2025: 1,288 institutionsQ1 2026: 1,265 institutionsQ2 2026: 1,273 institutions
Value heldQ2 2025: $69.3B
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 20261,265$60.6B
Q4 20251,288$66.7B
Q3 20251,254$66.3B
Q2 20251,232$69.3B
Q1 20251,275$77.1B
Q4 20241,195$69.1B
Q3 20241,148$66.1B
Q2 20241,110$55.4B
Q1 20241,086$57.4B
Q4 20231,066$49.8B
Q3 20231,048$56.4B
Q2 20231,024$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, Q2 2025

Shares, value and share of portfolio for each institution holding Aon plc; share changes are against Q1 2025.

Institutions holding AON in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
GM Advisory Group, Inc.41,709$14.9M0.74%−31,500−43.0%Reduced
AQR Capital Management LLC42,125$14.9M0.01%+8,049+23.6%Added
Forsta Ap-Fonden42,600$15.2M0.10%+1,200+2.9%Added
Public Sector Pension Investment Board44,475$15.9M0.07%−13,383−23.1%Reduced
Unio Capital LLC44,630$15.9M4.69%+8,243+22.7%Added
Kornitzer Capital Management Inc44,866$16.0M0.32%00.0%Unchanged
Intech Investment Management LLC45,557$16.3M0.15%+36,800+420.2%Added
Factory Mutual Insurance Co46,000$16.4M0.18%+5,000+12.2%Added
Retirement Systems of Alabama46,337$16.5M0.06%−136−0.3%Reduced
AXA S.A.46,492$16.6M0.05%+98+0.2%Added
CIBC World Markets Inc.47,298$16.9M0.04%−4,257−8.3%Reduced
Bank of Nova Scotia47,779$17.0M0.03%+25,188+111.5%Added
Amalgamated Bank47,798$17.1M0.13%+4,643+10.8%Added
ProShare Advisors LLC47,799$17.1M0.03%−2,860−5.6%Reduced
Cullen/Frost Bankers, Inc.47,966$17.1M0.21%+965+2.1%Added
Global Frontier Investments LLC49,000$17.5M4.17%+49,000New
Williams Jones Wealth Management, LLC.49,891$17.8M0.21%−20,660−29.3%Reduced
Oppenheimer Asset Management Inc.50,651$18.1M0.21%+26+0.1%Added
Xponance, Inc.51,332$18.3M0.15%+21,490+72.0%Added
Czech National Bank52,783$18.8M0.15%+3,111+6.3%Added
Picton Mahoney Asset Management52,813$18.8M0.27%+1,773+3.5%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys52,960$18.9M0.10%+3,503+7.1%Added
CIBC World Markets Corp54,275$19.4M0.13%+1,172+2.2%Added
Managed Asset Portfolios, LLC54,280$19.4M2.52%+15,695+40.7%Added
Abner Herrman & Brock LLC55,787$19.9M2.22%−648−1.1%Reduced
Nisa Investment Advisors, LLC55,985$20.0M0.09%−534−0.9%Reduced
Arizona State Retirement System56,831$20.3M0.12%−290−0.5%Reduced
Robeco Institutional Asset Management B.V.57,175$20.4M0.03%+3,067+5.7%Added
Financiere des Professionnels - Fonds d,investissement inc.57,555$20.5M1.24%−3,988−6.5%Reduced
Glenmede Investment Management, LP57,587$20.5M0.10%+57,587New
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main57,877$20.6M0.02%−1,412,143−96.1%Reduced
Ninety One UK Ltd57,949$20.7M0.05%−1,473−2.5%Reduced
Swedbank AB58,487$20.9M0.02%+58,487New
State of Michigan Retirement System58,758$21.0M0.11%+100+0.2%Added
Capitolis Liquid Global Markets LLC59,112$21.1M0.15%+49,362+506.3%Added
Handelsbanken Fonder AB60,479$21.6M0.08%+1,005+1.7%Added
Brinker Capital Investments, LLC60,849$21.7M0.19%−3,446−5.4%Reduced
Hantz Financial Services, Inc.60,905$21.7M0.35%−4,535−6.9%Reduced
LPL Financial LLC61,218$21.8M0.01%−6,675−9.8%Reduced
Resona Asset Management Co.,Ltd.61,738$22.0M0.11%+61,738New
Lansforsakringar Fondforvaltning AB (publ)61,927$22.1M0.13%−2,549−4.0%Reduced
MetLife Investment Management63,755$22.7M0.13%+7,941+14.2%Added
Artemis Investment Management LLP64,175$22.9M0.29%+49,910+349.9%Added
Squarepoint Ops LLC65,007$23.2M0.05%−130,959−66.8%Reduced
State of New Jersey Common Pension Fund D65,619$23.4M0.09%00.0%Unchanged
JLB & Associates Inc66,968$23.9M3.33%−707−1.0%Reduced
Victory Capital Management Inc68,697$24.5M0.02%−2,419−3.4%Reduced
Franklin Resources Inc70,887$25.3M0.01%−2,272−3.1%Reduced
STRS Ohio71,239$25.4M0.09%+7,320+11.5%Added
Schonfeld Strategic Advisors LLC71,776$25.6M0.19%−42,218−37.0%Reduced
Rafferty Asset Management, LLC71,790$25.6M0.08%+889+1.3%Added
Allianz Asset Management GmbH72,007$25.7M0.03%+32,184+80.8%Added
Mn Services Vermogensbeheer B.V.72,700$25.9M0.18%−1,300−1.8%Reduced
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund73,085$26.1M0.24%+9,800+15.5%Added
Susquehanna International Group, LLP77,408$27.6M0.04%+49,115+173.6%Added
TD Asset Management Inc78,181$27.9M0.02%−6,114−7.3%Reduced
Arrowstreet Capital, Limited Partnership78,753$28.1M0.02%+61,924+368.0%Added
Capital International Sarl79,262$28.3M0.54%+3,491+4.6%Added
CI Private Wealth, LLC80,546$28.7M0.04%−7,816−8.8%Reduced
LTS One Management LP81,750$29.2M7.04%+30,250+58.7%Added
Cercano Management LLC83,237$29.7M0.85%+83,237New
Capital International Inc83,350$29.7M0.29%+12,599+17.8%Added
KLP Kapitalforvaltning AS85,252$30.4M0.13%+1,000+1.2%Added
Public Employees Retirement System of Ohio86,726$30.9M0.10%+4,206+5.1%Added
Canoe Financial LP86,829$31.0M0.44%+3,150+3.8%Added
Royal London Asset Management Ltd86,848$31.0M0.07%−3,375−3.7%Reduced
LFL Advisers, LLC87,531$31.2M12.48%+2,484+2.9%Added
Advisors Capital Management, LLC87,556$31.2M0.43%+4,177+5.0%Added
Dudley & Shanley, Inc.88,632$31.6M4.97%−50.0%Reduced
Asset Management One Co.,Ltd.89,950$32.1M0.10%+2,992+3.4%Added
Gillson Capital LP90,881$32.4M2.48%+39,524+77.0%Added
Pictet Asset Management Holding SA91,533$32.7M0.03%−11,082−10.8%Reduced
Schroder Investment Management Group93,083$33.2M0.03%−22,230−19.3%Reduced
Gateway Investment Advisers LLC93,368$33.3M0.36%−264−0.3%Reduced
Teacher Retirement System of Texas95,512$34.1M0.14%+22,295+30.5%Added
Zurcher Kantonalbank (Zurich Cantonalbank)96,075$34.3M0.08%+4,451+4.9%Added
Treasurer of the State of North Carolina98,084$35.0M0.11%+8,216+9.1%Added
Susquehanna Fundamental Investments, LLC98,393$35.1M0.94%−7,016−6.7%Reduced
Central Securities Corp100,000$35.7M3.15%00.0%Unchanged
Colony Group, LLC100,049$35.7M0.08%−25,785−20.5%Reduced
Obermeyer Wood Investment Counsel, LLLP102,502$36.6M1.82%−2,417−2.3%Reduced
Border to Coast Pensions Partnership Ltd102,557$36.6M0.67%+4,540+4.6%Added
Danske Bank A/S104,882$37.4M0.09%+16,181+18.2%Added
Korea Investment CORP105,510$37.6M0.08%−23,965−18.5%Reduced
State of Wisconsin Investment Board105,706$37.7M0.09%−5,574−5.0%Reduced
Ironvine Capital Partners, LLC105,746$37.7M3.91%+683+0.7%Added
Night Owl Capital Management, LLC106,085$37.8M4.38%−52,468−33.1%Reduced
APG Asset Management N.V.125,100$38.0M0.11%+5,100+4.3%Added
Spears Abacus Advisors LLC108,323$38.6M0.78%+625+0.6%Added
M.D. Sass Investors Services, Inc.111,005$39.6M3.19%−29,429−21.0%Reduced
Broad Run Investment Management, LLC113,237$40.4M6.19%−3,848−3.3%Reduced
Toroso Investments, LLC113,657$40.5M0.27%+81,405+252.4%Added
Summit Trail Advisors, LLC114,375$40.8M0.70%+2,995+2.7%Added
The PNC Financial Services Group, Inc.114,718$40.9M0.03%−2,084−1.8%Reduced
Ninety One North America, Inc.114,785$41.0M2.01%+107,302+1,433.9%Added
Mitsubishi UFJ Trust & Banking Corp115,442$41.2M0.10%−2,742−2.3%Reduced
Chevy Chase Trust Holdings, Inc.117,135$41.8M0.12%+639+0.5%Added
Petrus Trust Company, LTA119,585$42.7M4.43%+2,085+1.8%Added
TCTC Holdings, LLC120,061$42.8M1.38%00.0%Unchanged
Davis R M Inc125,256$44.7M0.83%−320.0%Reduced