Arch Capital Group Ltd. is a Bermuda-based company, which provides insurance, reinsurance and mortgage insurance through its subsidiaries. The insurance segment consists of the Company’s insurance underwriting units, which offer specialty product lines, including construction and national accounts; excess and surplus casualty; professional lines; programs; property, energy, marine and aviation; travel, accident and health; warranty and lenders solutions, and others (consisting of alternative markets, excess workers' compensation and surety business). The reinsurance segment consists of its reinsurance underwriting units, which offer specialty product lines, including casualty; marine and aviation; other specialty; property catastrophe; property excluding property catastrophe, and other (consisting of life reinsurance and other). The mortgage segment includes its United States primary mortgage insurance business, investment and services related to United States credit-risk transfer.