Capital Group Companies Inc. Reduces its Holding of Converium's Registered Shares to Below 5%

ZUG, Switzerland, June 29, 2005 (PRIMEZONE) -- Converium Holding Ltd has been notified that Capital Group Companies Inc., 333 South Hope Street, Los Angeles, CA, 90071-1406, USA acting on behalf of funds managed by Capital Research and Management Company, 333 South Hope Street, Los Angeles, CA, USA, and clients of Capital Guardian Trust Company, 11100 Santa Monica Blvd 15th Floor, Los Angeles, CA, USA, Capital International Ltd., 25 Bedford St., London, England, Capital International Inc., 11100 Santa Monica Blvd 15th Floor, Los Angeles, CA, USA, and Capital International S.A., 3 Place des Bergues, 1201 Geneva, Switzerland, has reduced its holding of registered shares of Converium Holding Ltd, Zug to below 5%.