Peng Chen was named CIO at Ibbotson Associates, a new position. He...

Peng Chen was named CIO at Ibbotson Associates, a new position. He will oversee the firm's asset allocation and investment decision-making processes and will continue to supervise the research group. Mr. Chen was Ibbotson's head of research; Alexa Auerbach, spokeswoman, said a decision about filling Mr. Chen's previous position has not been made.

Brenda Walker was named vice president, marketing and client service, at Smith Breeden Associates, a new position. Ms. Walker was senior institutional marketer at JPMorgan Fleming Asset Management. She joins Jay Gladieux, Smith Breeden executive vice president and director of product management, who came from JPMorgan Fleming in late 2002.

David Miles was named chief U.K. economist in Morgan Stanley's London office, effective in October, said Anna Lenaghan, spokeswoman. Mr. Miles is a member of the U.K. Financial Services Authority board and is professor of financial economics at the Tanaka Business School, Imperial College London; he will become a visiting professor at the school after he starts at Morgan Stanley. He also was chief U.K. economist at Merrill Lynch from 1994-1996. Morgan Stanley has not had an economist that specifically analyzed the United Kingdom for more than a year, Ms. Lenaghan said. She could not elaborate.