P. Brett Hammond, PhD, is a research leader, client analytics at Capital Group, home of American Funds. He has 26 years of industry experience and has been with Capital Group for five years. Prior to joining Capital, Hammond directed applied indexing and modeling research teams at MSCI and held a number of positions at TIAA-CREF, where, as chief investment strategist, he worked on the creation of target date funds and inflation-linked bond products. He has published more than 30 articles and books on investing. He holds a PhD from the Massachusetts Institute of Technology and a bachelor's degree in economics and political science from the University of California, Santa Cruz.