Billionaire David Booth helped pioneer index investing. Here's his advice for investors.

August 28, 2026 / 1:02 PM EDT

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Index investing pioneer David Booth has a simple message for people navigating volatile financial markets: Stay calm and keep investing.Booth, a billionaire several times over whose Dimensional Fund Advisors manages $1 trillion, expands on that advice in a new book, "Stay Calm: Learn to Embrace Uncertainty in Investing and Life," scheduled for publication on Sept. 1. Part memoir and part investment guide, the book explains why investors should strive to accept the uncertainty inherent in the market rather than trying to outsmart it.

Billionaire David Booth helped pioneer index investing. Here's his advice for investors.

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