Geraldine Stewart was named head of investment for London-based Fidelity Internationals multimanager business, said spokeswoman Anne Read. The position is new. Ms. Stewart will be responsible for leading and developing the team of portfolio analysts identifying and reviewing best-of-breed strategies as well as building the investment-support functions for third-party funds. She was head of European equity research. David Allen, a director on the research team, is replacing her.