Elon Musk 's net worth has dropped by more than $144 billion since December, according to a report.

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This suggests that a reaction from consumers who dislike Mr Musk’s antics are only one reason for falling sales. An updated Model Y, Tesla’s best-selling vehicle, has just gone on sale. In preparation Tesla ran down inventory of the old model, crimping supply. Customers doubtless held off purchases until the new car was available.

Tesla (NASDAQ:TSLA) has appealed to Delaware's highest court to reverse a lower court ruling that voided CEO Elon Musk's record $56B pay package, with its lawyers claiming that the ruling harmed shareholders.