"Shark Tank" investor Kevin O'Leary.Mike Blake/Reuters "Shark Tank" investor Kevin O'Leary has warned of more regional bank failures as the Fed keeps raising interest rates. "You keep squeezing the toothpaste tube, you keep rolling it up, you keep raising rates, and you know things are going to break," he said. The Fed announced a quarter-point rate rise on Wednesday in a bid to cool inflation down to 2%.