Tesla Inc.’s stock plummeted 14% on Thursday after a rift over President Donald Trump’s proposed tax legislation exploded into an all-out public feud with the president threatening to end government contracts and subsidies for Tesla and Elon Musk’s Space Ex. The rout shed $153 billion from Tesla’s market value, the biggest one-day drop on record, while yielding short sellers $4 billion in gains, according to data from S3 Partners.

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