W. R. Berkley

Founded in 1967 by William R. Berkley, W. R. Berkley Corporation is a Fortune 500 insurance holding company. It operates worldwide in the property casualty insurance business, which consists of two segments: Insurance and Reinsurance & Monoline Excess. The company's business model is decentralized, with over 50 operating units, known as Berkley companies, each having the expertise and focus to serve a specific market niche or geographic area. This structure allows them to be agile and responsive to the unique needs of their clients while maintaining the financial strength of a large corporation.