Aon plc AON is well-poised for growth, capitalizing on strong retention, new business, and currency benefits across segments. Its solid property and casualty business, coupled with organic growth strategies and strategic acquisitions, drive expansion and success.Headquartered in Dublin, Ireland, AON offers risk management services, insurance, facultative reinsurance, brokerage and other services. It operates in more than 120 countries and has a market cap of $64.1 billion.