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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 2021

Institutional positions in Aon plc as of Mar 31, 2021. 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
919
No complete 13F data for Q4 2020
Shares held
223.5M
No complete 13F data for Q4 2020
Total value
$51.4B
No complete 13F data for Q4 2020

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 2021: 919 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 2021: $51.4B
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 2021

Shares, value and share of portfolio for each institution holding Aon plc.

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding AON in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Jane Street Group, LLC24,933$5.74M0.02%––
MRJ Capital Inc24,727$5.69M3.55%––
CIBC Private Wealth Group, LLC24,590$5.66M0.01%––
Qube Research & Technologies Ltd24,471$5.63M0.09%––
Zevin Asset Management LLC24,069$5.54M1.22%––
Daiwa Securities Group Inc.23,972$5.52M0.04%––
SG Americas Securities, LLC23,666$5.45M0.03%––
Steel Canyon Capital, LLC23,631$5.44M4.98%––
Paloma Partners Management Co23,579$5.42M0.16%––
Panagora Asset Management Inc23,409$5.39M0.03%––
CX Institutional22,504$5.18M0.46%––
Violich Capital Management, Inc.22,445$5.17M0.93%––
Boston Common Asset Management, LLC22,248$5.12M0.32%––
Glenmede Trust Co NA22,082$5.08M0.03%––
Aigen Investment Management, LP21,954$5.05M0.67%––
Public Sector Pension Investment Board21,785$5.01M0.03%––
Northwestern Mutual Wealth Management Co21,386$4.92M0.01%––
First National Bank of Omaha21,227$4.88M0.25%––
Pictet & Cie (Europe) SA21,207$4.88M0.20%––
Synovus Financial Corp21,049$4.84M0.05%––
Capital International Ltd20,441$4.70M0.28%––
Johnson Investment Counsel Inc20,149$4.64M0.07%––
Worldquant Millennium Advisors LLC19,939$4.59M0.10%––
Richard Bernstein Advisors LLC19,866$4.57M0.10%––
Securian Asset Management, Inc19,548$4.50M0.10%––
Shufro Rose & Co LLC19,500$4.49M0.36%––
PEAK6 Investments LLC19,068$4.39M0.11%––
Mitsubishi UFJ Asset Management (UK) Ltd.19,000$4.37M1.93%––
Premier Fund Managers Ltd18,735$4.35M0.17%––
Regions Financial Corp18,893$4.35M0.04%––
Gotham Asset Management, LLC17,841$4.11M0.18%––
Birch Run Capital Advisors, LP17,800$4.10M1.57%––
Tower Research Capital LLC (TRC)17,726$4.08M0.07%––
Equitable Trust Co17,584$4.05M0.30%––
Trexquant Investment LP17,568$4.04M0.37%––
Baird Financial Group, Inc.17,397$4.00M0.01%––
Maryland State Retirement & Pension System17,366$4.00M0.14%––
Tredje AP-fonden17,200$3.96M0.09%––
KWMG, LLC17,129$3.94M0.63%––
Cornerstone Advisors, LLC17,000$3.91M0.34%––
SRN Advisors, LLC16,709$3.84M1.38%––
Van Eck Associates Corp16,661$3.83M0.01%––
TT International Asset Management LTD9,726$3.83M0.20%––
Nordea Investment Management AB16,581$3.82M0.01%––
Elo Mutual Pension Insurance Co16,494$3.79M0.13%––
O'Shares Investment Advisers, LLC16,062$3.70M0.27%––
Mirae Asset Global Investments Co., Ltd.15,862$3.65M0.01%––
Cutler Group LP15,683$3.61M0.30%––
Sumitomo Mitsui DS Asset Management Company, Ltd15,666$3.60M0.09%––
Goelzer Investment Management, Inc.15,593$3.59M0.32%––
Harris Associates L PSuperinvestorHarris Associates (Oakmark)15,508$3.57M0.01%––
Global Frontier Investments LLC15,000$3.45M2.97%––
Beese Fulmer Investment Management, Inc.14,999$3.45M0.41%––
ING Groep NV14,962$3.44M0.07%––
Private Advisor Group, LLC14,908$3.43M0.03%––
Wolverine Trading, LLC14,662$3.40M0.07%––
South Dakota Investment Council14,672$3.38M0.06%––
New Mexico Educational Retirement Board14,445$3.32M0.13%––
Meiji Yasuda Asset Management Co Ltd.14,363$3.31M0.24%––
Alpha Omega Wealth Management LLC14,341$3.30M0.58%––
BBVA USA Bancshares, Inc.14,034$3.23M0.15%––
Louisiana State Employees Retirement System14,000$3.22M0.08%––
Kentucky Retirement Systems13,912$3.20M0.16%––
Mount Yale Investment Advisors, LLC13,676$3.15M0.41%––
Quantitative Investment Management, LLC13,415$3.09M0.26%––
Jasper Ridge Partners, L.P.13,388$3.08M0.14%––
Crossmark Global Holdings, Inc.13,260$3.05M0.08%––
Pacer Advisors, Inc.13,239$3.05M0.05%––
Gratus Capital LLC13,072$3.01M0.36%––
Exchange Traded Concepts, LLC12,858$2.96M0.11%––
Diversified Trust Co12,725$2.93M0.11%––
Highland Capital Management, LLC12,696$2.92M0.18%––
Applied Research Investments, LLC12,691$2.92M1.07%––
Freestone Capital Holdings, LLC12,635$2.91M0.16%––
Live Oak Private Wealth LLC12,615$2.90M0.71%––
New York Life Investments Alternatives12,239$2.82M1.97%––
Mariner, LLC12,144$2.79M0.02%––
Pittenger & Anderson Inc12,000$2.76M0.15%––
Raymond James Financial Services Advisors, Inc.11,640$2.68M0.01%––
Ar Asset Management Inc11,618$2.67M0.80%––
MML Investors Services, LLC11,368$2.62M0.03%––
Chesley Taft & Associates LLC10,897$2.55M0.15%––
Rockefeller Capital Management L.P.10,950$2.52M0.02%––
Dynamic Technology Lab Private Ltd10,914$2.51M0.28%––
Holocene Advisors, LP10,858$2.50M0.02%––
Bradley Mark J.10,750$2.47M1.68%––
Captrust Financial Advisors10,730$2.47M0.03%––
MD Financial Management Inc.10,723$2.47M0.07%––
Arthur M. Cohen & Associates, LLC11,114$2.45M0.56%––
CWM, LLC10,167$2.43M0.02%––
Seascape Capital Management10,536$2.42M1.35%––
WealthStone, Inc.10,454$2.40M0.84%––
Rothschild Investment Corp10,431$2.40M0.21%––
Walleye Trading LLC10,342$2.38M0.08%––
Engineers Gate Manager LP10,328$2.38M0.12%––
K.J. Harrison & Partners Inc10,000$2.30M0.36%––
FORA Capital, LLC9,867$2.27M0.75%––
Kestra Advisory Services, LLC9,827$2.26M0.03%––
Game Creek Capital, LP9,702$2.23M1.33%––
FDx Advisors, Inc.9,688$2.23M0.08%––