Elon Musk wrote in a tweet on Tuesday that he might take Tesla private when the automaker hits $420 per share, "funding secured." The missive sent the company's shares skyrocketing to $371.15. They fell back to $367 before trading was halted. After trading stopped, Musk tweeted again to say current investors could either sell their stakes at $420 or hold their shares if Tesla went private, though he hopes they stay invested. Tesla is worth $61 billion, and going private at $420 per share would lock the company's valuation at $71.3 billion. Musk expects the company to be profitable in 2018's third quarter, despite reporting a record loss of $718 million in the second quarter last week.

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