Zurich Cantonal Bank Increases its Holding of Converium's Registered Shares to 5.001 Percent and Reduces Again to Below 5 Percent

Disclosure of Shareholdings Pursuant to Art. 20 SESTA


ZUG, Switzerland, July 07, 2005 (PRIMEZONE) -- Converium Holding Ltd has been notified that Zurich Cantonal Bank, Tessinerplatz 7, 8002 Zurich, Switzerland, adjusted its holding of registered shares of Converium Holding Ltd, Zug on June 29, 2005 to 5.001% and on June 30, 2005 to below 5%.

Zurich Cantonal Bank states that the above-mentioned stock of shares is a pure trading position, which is generated during the normal course of its derivative business.



            

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