Martin Senn was named CIO of Zurich Financial Services Group effective April 1, confirmed Daniel Hofmann, spokesman for Zurich Financial. Mr. Senn also will be a member of the executive committee. He will replace David Wasserman, who will focus on Zurich Alternative Assets, a new internal business unit, Mr. Hofmann said. The new unit will be based in New York. Mr. Senn was CIO at Swiss Life Group. Information on Mr. Senn's successor could not be learned by press time.