Aon plc is a large Anglo-American, Irish Domiciled global professional services firm that sells a range of financial risk-mitigation products, including insurance, pension administration, and health-insurance plans. Aon has approximately 50,000 employees in 120 countries.

Aon was created in 1982 when the Ryan Insurance Group merged with the Combined Insurance Company of America. In 1987, that company was renamed Aon from aon, a Gaelic word meaning “one”.

Traded as:           NYSE: AON (Class A); S&P 500 Component

Industry:              Professional services

Founded:            1982; 38 years ago

Founder:             Patrick Ryan

Headquarters:   London, United Kingdom

Services:              Risk Consulting; Retirement Consulting; Health Consulting

Website:              www.aon.com