John C. Bogle, Vanguard's Founder and Index Fund Pioneer, Dies at 89

Jack Bogle, a fierce advocate for American investors and the founder of Vanguard Group, died Wednesday at age 89. Mr. Bogle almost singlehandedly popularized index funds. WSJ's Jason Zweig, who interviewed him dozens of times, recounts Mr. Bogle's long and influential career. Photo: Reuters

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