The sale is the second big chunk of stock he has cashed out since his $44 billion purchase of Twitter in October. I've spoken to a lot of investors who have Tesla shares and they're absolutely furious at Elon." There was no immediate response to a Reuters request for comment from Tesla and from Musk emailed outside business hours. The value of Musk's total selling over the past year comes to nearly $40 billion. Tesla investor Ross Gerber, a strong supporter of Musk, said on Twitter that Tesla should announce a buy back "to take advantage to (sic) the low share price Elon has created."

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