I just got curious about this and started looking around. Forbes had some interesting things: Here is a complete list of the world’s billionaires in 2009. Youngest billionaire 2008: Marc Zuckerberg – United States, Age: 23.
He and his friend Andrew McCollum along with two other roommates, Dustin Moskovits and Chris Hughes started Facebook. Mark is the CEO of Facebook and his net worth is said to be $1.5 billion. – link
Youngest billionaires in 2009:
Prince Albert von Thurn und Taxis
Net worth: $2.1 billion
“The youngest billionaire in the world is 25-year-old German Prince Albert von Thurn und Taxis, who is worth $2.1 billion. Von Thurn und Taxis first appeared on our list of the world’s billionaires at age 8, but he officially inherited his family’s fortune in 2001 on his 18th birthday. … German prince reclaims the title of world’s youngest billionaire as Facebook founder Mark Zuckerberg drops out of the billionaires’ club.”
Net worth: $12 billion
Google co-founder continues to dominate search business despite facing strong headwinds. Company’s stock is down 30% in the past 12 months, slicing $6.7 billion from personal balance sheet. …
Net Worth: $12 billion
Professor’s son, heads Google’s product division. Met partner Sergey Brin in a computer science Ph.D. program at Stanford University. Duo dropped out in 1998 to start Google from a friend’s garage…
Sheik Mansour Bin Zayed Al Nahayan
Net Worth: $4.9 billion
Investor with hoards of cash is a member of Abu Dhabi’s royal family. Last September, he shelled out $300 million for soccer team Manchester City. One month later, he rescued British bank Barclays from possible nationalization with a controversial $5 billion cash investment.
Net Worth: $1.1 billion
Embattled Yahoo! co-founder quit as chief executive in January. Settled proxy contest with shareholder activist Carl Icahn for control of company. Icahn won three board seats. Yahoo! stock is down nearly 55% since original Microsoft offer last February.