Institutional shares held 191 Million
1.66M calls
863K puts
Total value of holdings $69.3B
$605M calls
$314M puts
Market Cap $75.3B
206,852,992 Shares Out.
Institutional ownership 92.15%
# of Institutions 1,398


Latest Institutional Activity in AON

Top Purchases

Q2 2025
Norges Bank Shares Held: 2.12M ($770M)
Q2 2025
Vanguard Group Inc Shares Held: 20.3M ($7.38B)
Q2 2025
Vontobel Holding Ltd. Shares Held: 461K ($168M)
Q2 2025
Mitsubishi Ufj Kokusai Asset Management Co., Ltd. Shares Held: 2.71M ($985M)
Q2 2025
Sustainable Growth Advisers, LP Shares Held: 1.85M ($672M)

Top Sells

Q2 2025
Massachusetts Financial Services CO Shares Held: 8.95M ($3.26B)
Q2 2025
Mackenzie Financial Corp Shares Held: 684K ($249M)
Q2 2025
Assenagon Asset Management S.A. Shares Held: 174K ($63.2M)
Q2 2025
Mawer Investment Management Ltd. Shares Held: 2.97M ($1.08B)
Q2 2025
Polen Capital Management LLC Shares Held: 2.75M ($999M)

About AON

Aon plc, a professional services firm, provides advice and solutions to clients focused on risk, retirement, and health worldwide. It offers commercial risk solutions, including retail brokerage, cyber, and global risk consulting solutions, as well as acts as a captives management; and health solutions, such as health and benefits brokerages, and health care exchanges. The company also provides treaty and facultative reinsurance, as well as insurance-linked securities, capital raising, strategic advice, restructuring, and mergers and acquisitions services; and corporate finance advisory services and capital markets solutions products. In addition, it offers strategic design consulting services on their retirement programs, actuarial services, and risk management services; advice services on developing and maintaining investment programs across a range of plan types, including defined benefit plans, defined contribution plans, endowments, and foundations for public and private companies, and other institutions; and advice and solutions that help clients in risk, health, and wealth through commercial risk, reinsurance, health, and wealth solutions. Further, the company offers CoverWallet; Affinity; Aon Inpoint; CoverWallet; and ReView services. Aon plc was founded in 1919 and is headquartered in Dublin, Ireland.


Insider Transactions at AON

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
View All Transactions

Last 12 Months Summary

Buy / Acquisition
207K Shares
From 26 Insiders
Grant, award, or other acquisition 152K shares
Exercise of conversion of derivative security 15.2K shares
Open market or private purchase 725 shares
Bona fide gift 38.9K shares
Sell / Disposition
119K Shares
From 23 Insiders
Payment of exercise price or tax liability 75.5K shares
Bona fide gift 42K shares
Open market or private sale 1.93K shares

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