Title: Founder, Bridgewater Associates
Country: US
Age: 66
Dalio's hedge fund, Bridgewater Associates, is the biggest in the world, managing a near-$160 billion portfolio, and Dalio himself is worth at least $11 billion.
Such money is just part of what fuels his power; since being named to TIME magazine's 2012 list of the most influential people in the world, his "investment secrets" have become highly coveted, and last year he shared them in an unorthodox manner for a hedge funder: in a 30-minute YouTube video, which has been watched more than 2 million times. His 123-page, self-published manual on his principles of money management and leadership is also seen as somewhat of a bible among the investment world.
He's always taken a radical approach to management, making everything he and his fund does completely transparent to employees. And it's worked well for him: Bridgewater, while sometimes viewed as "cultish," is one of the most coveted places to work on Wall Street. Dalio has said that he attributes his success, in part, to reminding himself that history repeats itself and keeping track of the decisions he's made which didn't work.