Remembering Jack Bogle, the man who helped investors save more than $1 trn

Bogle, who founded the Vanguard Group, squeezed profit margins on Wall Street, which he loudly and persistently criticised for treating investors poorly

John Bogle turned investing upside down.

By founding Vanguard Group, and persisting through the disappointing early years of running the first index mutual fund available to individual investors, he ended up slashing fees paid by hundreds of millions of regular people.

Bogle, who died Wednesday at age 89, also squeezed profit margins on Wall Street, which he loudly and persistently criticised for treating investors poorly. In the end, fund investors may save more than $1 trillion thanks to Bogle's efforts, according to calculations by Bloomberg ETF analyst Eric Balchunas in 2016. 

Bloomberg News asked prominent investors and executives who knew