David Booth Publishes Book on Investing and Uncertainty

David Booth, chairman of Dimensional Fund Advisors, published a new book titled "Stay Calm: Learn to Embrace Uncertainty in Investing and Life" on September 1, 2026. The work reflects on his five-decade career and his contributions to the index-fund revolution, framing investing as a fundamental bet on human innovation.

Booth advocates for passive, follow-the-market strategies over stock picking or market timing, specifically addressing the current concentration of megacap technology and AI stocks. He describes the ability of average investors to achieve returns similar to professional investors as a "miracle" and argues that market uncertainty is a necessary component for creating investment opportunities.

The book launch coincides with a major milestone for Dimensional Fund Advisors, which recently surpassed $1 trillion in assets under management.