Aspen Insurance Holdings is a holding company. Co. underwrites insurance and reinsurance through its subsidiaries in Bermuda, the U.S. and the U.K. Co. has two segments: Reinsurance, which consists of property catastrophe reinsurance, other property reinsurance (facultative or single risk reinsurance), casualty reinsurance (U.S. treaty, international treaty and casualty facultative reinsurance) and specialty reinsurance (credit and surety, agriculture insurance and reinsurance, marine, aviation, terrorism, engineering and other lines); and Insurance, which consists of property and casualty insurance, marine, aviation and energy insurance and financial and professional lines insurance.

Preferreds: AHL.PR, AHL.PRA, AHL.PRB, AHL.PRC, AHL.PRD, AHL.PRE