Jeffrey Peek has stepped down from his post as president of Merrill Lynch Investment Managers after four years in that position and 18 years with the firm.

His decision to leave the firm comes only months after Stanley O'Neal had been named president and CEO of the firm in the long-awaited and hotly contested appointment.

Robert Doll will take over as president of MLIM, reporting to Michael Marks. Doll joined Merrill Lynch in June 2000 as chief investment officer for equities for MLIM Americas. Soon after, he became co-head of that unit, and earlier this year, he was named global CIO, a role he will retain as president of MLIM. Before joining Merrill, Doll served as chief investment officer for OppenheimerFunds and was a member of the firm's executive committee.

Marks, who had been executive chairman of Merrill Lynch Europe, Middle East, and Africa, has also been appointed chairman of MLIM. Marks joined Merrill Lynch in October 1995 as co-head of the Global Equities Group.

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