Kevin O’Leary on his worst ‘Shark Tank’ investment ever: ‘I lost half a million dollars’
If there’s one thing Kevin O’Leary has learned from more than three decades as an investor, it’s that not every bet pays off. On ABC’s “Shark Tank,” O’Leary has invested more than $8.5 million in roughly 40 companies since the show debuted in 2009, according to an estimate from Sharkalytics. The longtime investor and chairman…