"He is a genius - I can't say enough good things about what he does for all sectors that he gets involved in," O'Leary said.
Though O'Leary is more fond of Tesla's product than its stock. "I'm an investor and at the end of the day, I look at each opportunity to put money in harms way - one stock at a time and that's not a stock I own," he said.
O'Leary is also the Chairman of O'Shares ETF Investments.
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