Eric Balchunas, Columnist

How the Vanguard Effect Adds Up to $1 Trillion

The financial company doubles as a wealth-transfer machine.

Big impact.

Photographer: Mike Mergen/Bloomberg
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In the usually bleak debate over the economic health of average Americans and the utility of the finance industry, here’s a happy statistic: A private-sector wealth-transfer machine has saved average investors $1 trillion. That machine is Vanguard, and its model is worth highlighting -- and maybe even emulating.

Let me explain the math.