MAP20090093515 Rankings of five largest reinsurers remain unchanged in 2008 list of top 35 global firms Top 35 global reinsurance groups : ranking by gross premium written in 2008 (US$ millions). Source: A.M. Best. — Ámbito geográfico: Internacional En: Best's Review. - New Jersey : A.M. Best Company, 1976- = ISSN 1527-5914. - 13/09/2009 Tomo 110 Número 5 - 2009, p. 68 1. Reaseguro . 2. Grupos reaseguradores .