Chubb Limited is the world's largest publicly traded property and casualty (P&C) insurance company. Incorporated in Zurich, Switzerland, with operational headquarters in Philadelphia, the company was formed in 2016 when ACE Limited acquired The Chubb Corporation and adopted the Chubb name. Chubb provides commercial and personal insurance, reinsurance, and life insurance to clients in 54 countries and territories, and is listed on the New York Stock Exchange under the ticker CB as a component of the S&P 500.