Chubb Limited is a Swiss-based global insurance company that provides commercial and personal property and casualty insurance, personal accident and supplemental health insurance (A&H), reinsurance, and life insurance to a diverse group of clients. Chubb operates in 54 countries and territories and is the world's largest publicly traded property and casualty insurance company. The company has a long history, dating back to 1882, and has grown through a series of mergers and acquisitions. Chubb is known for its high-quality insurance products and services, as well as its strong financial performance and commitment to corporate social responsibility.