Charles D.Ellis is a consultant to large institutional investors and government agencies. For thirty years he was managing partner of Greenwich Associates, an international business strategy consulting firm he founded that serves virtually all the leading financial service organisations around the world. Ellis earned his M.B.A from Harvard University and his Ph.D. from New York University. He has taught investment management courses at Harvard and Yale and is the author of twelve books, mostly on investing, and has written nearly one hundred articles for business and professional magazines. Ellis has served on the boards of Harvard Business School and Phillips Exeter Academy.