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- Mark Cuban is among the richest people in the US, with an estimated net worth of $5.7 billion.
- He's earned his fortune through business deals including the $5.7 billion sale of Broadcast.com.
- The "Shark Tank" investor has spent millions on private planes, a yacht, and a lavish Dallas home.
Mark Cuban, 66, is one of the wealthiest people in America, with an estimated net worth of $5.7 billion, according to Forbes.
Getting there wasn't easy. Cuban's journey to becoming a billionaire included living in a "dumpy" apartment, where he stayed up late eating chicken wings and teaching himself to code. His unglamorous life as an aspiring entrepreneur included taking no vacation time for seven years and stealing towels from the Holiday Inn.