The Cuban Family (Net Worth: $3.9 billion, Company Name: The Dallas Mavericks, 2929 Entertainment)
When it comes to Hollywood, there aren’t many names that get bigger than Mark Cuban. He created 2929 Entertainment, a film company which produced the movie Good Night, and Good Luck, starring George Clooney. The film was an unexpected hit, earning six nominations at the Oscars.
The company went on to expand into a greater variety of film projects, including documentaries. Most of Cuban’s fortune, though, can be attributed to his investment in the Dallas Mavericks. At present, he provides words of wisdom on how to build a successful business on the TV show Shark Tank.