Under 40 And Single: America’s Most Eligible Billionaires

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Of course, Mark Zuckerberg is the Poster Boy for the Under 40 Billionaire Club, of which there are now hundreds of members. Their incredible wealth is mostly due to the explosion of social networking on the web, but at least one name on this list actually invented something useful. And, they’re not as famous or as recognizable as their Boy Genius benefactor. The other qualifying statistic? They’ve all checked off the ‘Single’ option on their Facebook profiles…(Pictured below: Elizabeth Holmes)

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Scott Duncan

As heir to the Enterprise energy business fortune, Scott Duncan earned his billions the old fashioned way: Some guy died.
Age: 31
Net Worth: $7 billion
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Robert Pera

Robert Pera made his billions by bailing out of Apple before the crash and founding Ubiquiti Networks. He’s also a majority owner of the Memphis Grizzlies.
Age: 36
Net Worth: $2.8 billion
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Travis Kalanick

Travis Kalanick as the founder of the ride sharing network Uber after making hundreds of millions as a co-founder of the P2P File Sharing network Red Swoosh.
Age: 38
Net Worth: $3 billion
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Nick Woodman

Nick Woodman founded GoPro, the h-def selfie video cam biz that is revolutionizing personal video, infusing it with highly professional quality.
Age: 39
Net Worth: $3.9 billion
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Jan Koum

If you’ve ever been forced to download Messenger to your phone just to IM on Facebook, that’s how Jan Koum made his first billion. He’s since piled on billions more having invented WhatsAPP and selling it off to Mark Zuckerberg.
Age: 38
Net Worth: $7.6 billion
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Dustin Moskovitz

An early Facebook co-founder and defector, Dustin Moskovitz had the foresight to hang on to his company stock, making him an instant billionaire the day Facebook went public.
Age: 30
Net Worth: $8.1 billion
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Sean Parker

Sean Parker made (and lost) millions creating and crash burning Napster. He went on to be the whale behind a little Social Network later known as Facebook, earning him billions.
Age: 34
Net Worth: $3 billion
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Jack Dorsey

Jack Dorsey is the genius behind Twitter and the online payment system Square.
Age: 37
Net Worth: $2.3 billion
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Elizabeth Holmes

Elizabeth Holmes is the only woman on this list, having earned her billions inventing and marketing the finger-prick method of drawing and testing blood. She’s poised to become the richest woman in the world, since the FDA just approved her latest invention: A herpes personal detection blood test. It’s gonna be huge…
Age: 30
Net Worth: $4.5 billion
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