Richard C GrinoldRichard C. Grinold, Ph.D., is Managing Director, Advanced Strategies and Research at Barclays Global Investors. Dr. Grinold spent 14 years at BARRA, where he served as Director of Research, Executive Vice President, and President; and 20 year on the faculty at the School of Business Administration at the University of California, Berkeley, where he served as the chairman of the finance faculty, chairman of the management science faculty, and director of the Berkeley Program in Finance. Ronald N. Kahn, Ph.D., is Managing Director in the Advanced Active Strategies Group at Barclays Global Investors. Dr. Kahn spent 11 years at BARRA, including over seven years as Director of Research. He is on the editorial advisory board of the Journal of Portfolio Management and the Journal of Investment Consulting. Both authors have published extensively, and are widely known in the industry for their pioneering work on risk models, portfolio optimization, and trading analysis; equity, fixed income, and international investing; and quantitative approaches to active management. Read More Read Less