Billionaire investor Mark Cuban didn’t take a vacation for seven years when he first built the $30 million-a-year tech company MicroSolutions. At the time, he was “broke as f-ck,” recently ...

Today, Mark Cuban may be sleeping in a $25 million, 24,000-square foot mansion in a wealthy Dallas neighborhood. But in the 1980s when the 66-year-old former Shark Tank investor first launched ...