Frank Waltman was named vice president and head of Prudential Retirements investment products team, said spokeswoman Dawn Kelly. It is a new position. Mr. Waltman will oversee the open architecture investments comprising equity, fixed income, balanced, and other retail and subadvised investment offerings, totaling more than 1,000 individual funds and about $100 billion in invested assets. Mr. Waltman was a vice president at Phoenix Investment Partners, responsible for product development and management. Alice Ericson, spokeswoman for Phoenix, did not return calls seeking information on a replacement.