Aon plc is a leading global professional services provider offering risk, retirement and health solutions.




MarketCap US

US United States



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.


Aon is a professional services firm with roots dating back to 1919, when it was founded by Cornelius Vander Starr as an insurance agency in Chicago. The company has grown to become the largest provider of risk management, insurance, and reinsurance brokerage services in the world. In 2012, Aon was ranked by Fortune magazine as the #75 largest corporation in the United States and the 6th largest professional services firm in the world. During the 1980s and 1990s, Aon grew rapidly and expanded its range of services, including business consulting and outsourcing, human capital and benefits, health care and pensions administration, and outsourcing. Aon also invested in technology and acquired multiple companies with complementary offerings. In 1997, Aon expanded internationally with the purchase of Alexander & Alexander, creating Aon Risk Services. Aon acquired and created a number of other companies and subsidiaries, including Hewitt Associates, a global consulting and outsourcing business, and Aon Benfield, a reinsurance intermediary. In 2007, Aon was awarded an $850 million contract from the US Department of Defense to develop, manage and maintain military personnel benefits. The deal was the largest contract ever awarded to an insurance broker in history at the time. Today, Aon is a leading provider of risk management, insurance, and reinsurance brokerage services, with a global presence across the Americas, Europe, the Middle East, Africa and Asia Pacific. In addition to these broker services, Aon provides a wide range of consulting, HR and technology solutions to help companies better manage and develop their employees. Aon also engages in charitable and philanthropic activities, including donating millions of dollars to United Way and supporting the Global Fund.


We strive to empower economic and human possibility for our clients, our colleagues and our communities around the world.


Our vision is to help empower people around the world by providing risk and people solutions that help them build resilience in times of uncertainty.

Key Team

Mr. Stephen E. Wakefield (VP of Engineering & COO)

Mr. Christopher Douglas Eason (Chief Accounting Officer)

Mr. Xerxes Gazder (Chief Information Officer)

Mr. Casey R. Kidwell (VP of Admin.)

Mr. Joseph Logan Mondillo C.F.A. (Director of Investor Relations)

Mr. Luke A. Bomer (Sec.)

Recognition and Awards
Aon offers a variety of recognition programs to reward employees for exemplary performance, inclusion and innovation. They include performance-based awards, recognition gifts and service awards.

Leadership team

Mr. Norman H. Asbjornson (Founder, Consultant & Director)

Ms. Rebecca A. Thompson (VP of Fin. & CFO)

Number of Employees
1,000 - 20,000
Tulsa, Oklahoma, United States
Company Registration
SEC CIK number: 0000824142
Net Income
20M - 100M
500M - 1B
Traded as
Social Media
Sat Feb 24 2024

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