A biography of Jack Bogle, the founder of The Vanguard Group, and his mission to revolutionize investing. Eric Balchunas, a senior ETF analyst at Bloomberg, details Vanguard’s unique investor-owned structure, how it grew into the world’s largest index fund provider, and Bogle’s relentless drive to cut costs and disrupt Wall Street. The book also traces Bogle’s early career, his forceful personality, and the lasting impact of his vision on the asset management industry.