Today, Kevin O'Leary presides over a multitude of companies bearing his last name: wine business O'Leary Fine Wines, financial company O'Shares Investments and private equity firm O'Leary Ventures.

He's also famous as a judge on ABC's "Shark Tank," through which he's invested in businesses like Plated — a meal delivery company that sold to Albertson's for $300 million. O'Leary says it was the largest exit in the history of the show.