Tokio Marine Holdings, Inc., is a multinational insurance holding company headquartered in Tokyo, Japan. It is the largest property/casualty insurance group in Japan in terms of revenue and is the parent company for the Tokio Marine Group which employs 39,000 people in 38 countries worldwide. The main business of Tokio Marine is Management of non-life insurance companies, life insurance companies, specialized securities companies, foreign companies engaged in insurance businesses and any other company which is or may become a subsidiary of the Company in accordance with the provisions of the Insurance Business Law of Japan, and any other business pertaining to the foregoing item. Tokio Marine is part of Mitsubishi, one of the few Japanese giant conglomerates, known as keiretsu.