John C. “Jack” Bogle was known throughout the world as a champion for the individual investor. He earned that reputation through his actions every day, but key accomplishments stand out.

Mr. Bogle introduced the first index mutual fund for individual investors and stood behind the concept until it gained widespread acceptance. He drove down costs across the mutual fund industry by ceaselessly campaigning in the interests of investors. And he led Vanguard, the company he founded to embody his philosophy, for more than 2 decades.