Aon Corp., founded in 1919, is the world's second largest insurance brokerage and the leading reinsurance broker. The company operates in three major segments: commercial brokerage, consulting services and consumer insurance underwriting.
Key Dates
- 1919: W. Clement Stone founded Combined International Corporation
- 1960s: Pat Ryan founded Ryan Insurance Group
- 1982: Ryan Insurance Group and Combined International Corporation merged
- 2000: Bought Reliance Group's accident and health insurance business
- September 11, 2001: 175 employees were killed during the collapse of the World Trade Center's south tower
- 2004-2005: Investigated by Eliot Spitzer
- 2007: Ranked as the second largest insurance broker in the world
Aon Corp. Competitors
Arthur Gallagher: Official Site | Hoovers
Marsh & McLennan: Official Site | Hoovers
Willis Group: Official Site | Hoovers
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