In a rare moment of regret on ABC's Shark Tank, Kevin O'Leary watched a potential goldmine slip through his fingers.

In a memorable 2015 episode of ABC's Shark Tank, Kevin O'Leary delivered one of his most controversial rejections.

"Shark Tank" star Kevin O’Leary ... to Trump for 12 years," O’Leary said. "If you don’t understand that at this point, he's not gonna change. He'll pick someone out of a crowd, out of ...

Canadian businessman Kevin O'Leary said Monday that he told U.S. President-elect Donald Trump that he was wasting his time meeting with Canadian Prime Minister Justin Trudeau.

there's no number you can measure during the Mandate of Trudeau that isn't a complete collapse and the one that finally did him in and rightfully so was wiping out 41% ... studies, Kevin O'Leary ...