Robert C. Doll was named global chief investment officer and Peter J...

Robert C. Doll was named global chief investment officer and Peter J. Gibbs was named global COO at Merrill Lynch Investment Managers. They replace joint COOs Carol Galley and Stephen Zimmerman, who will retire at the end of the year and at the end of June, respectively. Messrs. Gibbs and Doll will retain their current responsibilities in addition to their global roles. Mr. Doll is co-head of MLIM Americas with Mary E. Taylor, and Mr. Gibbs is head of MLIM Europe, Middle East and Africa.