Allied World Assurance Company Holdings, AG, through its subsidiaries, provides property, casualty, and specialty insurance and reinsurance solutions worldwide. It operates through three segments: North American Insurance, Global Markets Insurance, and Reinsurance. The company offers various general casualty insurance products, including insurance products that insure specialty liability risks comprising professional liability, environmental liability, product liability, healthcare liability, and commercial general liability risks; policies covering directors and officers, employment practices, and fiduciary liability; errors and omissions liability policies for law firms, technology companies, insurance companies, insurance agents and brokers, and municipalities; and primary and excess liability, and other casualty coverages to the healthcare industry, as well as comprehensive insurance to contractors and their employees. Its casualty insurance products also covers complex liability risks in various industries, including construction, real estate, public entities, retailers, manufacturing, transportation, and finance and insurance services. The company also provides property insurance products that focus direct coverage of physical property and business interruption coverage for commercial property risks, as well as inland marine business. In addition, it offers aviation products that cover airline, aerospace, and general aviation classes of business; marine products covering various types of goods in transit; and short- and medium-term trade credit insurance products. Further, the company provides reinsurance products and services for professional liability lines, specialty casualty, property, accident and health, marine, aerospace, and crop risks. Allied World Assurance Company Holdings, AG was founded in 2001 and is headquartered in Zug, Switzerland.