Fortt Knox

Michael Dell founded his company 33 years ago, in his freshman dorm room at the University of Texas, Austin. He had $1,000 to buy PC parts, and took orders over the phone. After that, it ballooned like crazy – and made Dell Computer one of the fastest-growing companies ever. The stock price went on a dizzying tear throughout the 1990s, roughly doubling most years throughout the decade. It also made Michael Dell a multi-billionaire. Since then, the path hasn't been easy. The era of gonzo growth in personal computers and corporate servers – Dell's bread and butter – is over. Now attention has turned to smartphones and cloud computing. Sensing weakness, legendary investor Carl Icahn tried to buy out the company four years ago, which probably would have resulted in it breaking into pieces. Michael Dell fought him and won, taking his namesake company private, and then making it bigger than ever.