The Top Ten Stocks for May 21

May 21 (Bloomberg) -- Bloomberg’s Trish Regan, Adam Johnson and Julie Hyman report on today’s ten most important stocks including Tesla, Medtronic and JPMorgan. (Source: Bloomberg)
Is Musk's Model S Referral Program a Warning Sign?
06:37 - Elon Musk is looking to boost Tesla sales with a little help from his friends. Tesla Motors will provide discounts when an owner recommends a Model S to a new buyer. It’s the first incentive program for the company, which eschews traditional advertising and dealer networks. Bloomberg's Dana Hull has more on "Bloomberg Markets." (Source: Bloomberg)
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