David Booth started Dimensional Fund Advisors out of a Brooklyn brownstone in 1981 with an idea that challenged conventional investing: investors should have exposure to smaller companies as part of a diversified portfolio. More than four decades later, Dimensional manages over $1 trillion. Boo...
Source: [Bloomberg Markets](https://www.bloomberg.com/news/videos/2026-09-23/how-booth-built-dimensional-from-a-brooklyn-brownstone-video)