Platinum Underwriters Holdings, Ltd. (Platinum Holdings) is a holding company. The Company operates in three segment Property and Marine, Casualty and Finite Risk. Through its reinsurance subsidiaries the Company provides property and marine, casualty and finite risk reinsurance coverages to a diverse clientele of insurers and select reinsurers on a worldwide basis. Platinum Regency Holdings (Platinum Regency) is an intermediate holding company and a wholly owned subsidiary of Platinum Holdings. Platinum Finance is an intermediate holding company and a wholly owned subsidiary of Platinum Regency. The Company operates through two licensed reinsurance subsidiarie Platinum Underwriters Bermuda, Ltd. (Platinum Bermuda), a Bermuda reinsurance company, and Platinum Underwriters Reinsurance, Inc. (Platinum US), a United States reinsurance company. Platinum Bermuda is a wholly owned subsidiary of Platinum Holdings and Platinum US is a wholly owned subsidiary of Platinum Finance.