NAME: John C. "Jack" Bogle
EDUCATION: Princeton University, 1951; Bachelor's degree in economics
CAREER: Founded The Vanguard Group Inc. in 1974 and launched the first index mutual fund, the Vanguard 500 Index Fund, in 1975. Before that he worked at a predecessor company, starting in 1951. Served as Vanguard's chairman and chief executive until 1996, and senior chairman until 2000. Now runs Vanguard's Bogle Financial Markets Research Center, a think tank.
Valley Forge, Pa.-based Vanguard manages nearly $1.7 trillion in U.S. mutual fund assets, offering more than 170 funds.
PERSONAL: Lives in Bryn Mawr, Pa., with his wife, Eve. They are parents of six children and grandparents of 12. His 10th book, "The Clash of Cultures: Investment vs. Speculation," is due to be published next year. He also has a blog, at www.johncbogle.com
FUN FACT: Many advocates of Bogle's index investing strategy call themselves Bogleheads, and they have their own website: www.bogleheads.org