Only eight American billionaires are under the age of 40, and three of them cofounded Facebook.
The youngest? It isn’t who you think it is. The world’s youngest billionaire is now 26-year-old Dustin Moskovitz, who is 8 days younger than his former Harvard roommate and Facebook cofounder Mark Zuckerberg. The social-networking site’s first chief technology officer, Moskovitz left in 2008 and started Asana, a software company that allows individuals and small companies to better collaborate.
Outside the world of the Internet, young rich list members have been able to cash in from a few other industries such as finance and sports. Hedge fund manager John Arnold, 36, got his start as an oil trader for Enron in 1995.
Five of the 20 youngest inherited their fortunes, including Scott Duncan, the only billionaire in his 20s who didn’t strike it rich with Facebook. He and his siblings assumed control of the family’s $12.4 billion pipeline empire after their father Dan Duncan’s death last March.
Worth noting about this bunch is not simply how quickly they’ve made their money but how they are choosing to spend it, not so much on luxury homes or expensive toys but on causes about which they are passionate.
Source: Link