Tesla shares popped as a noted short seller, Andrew Left of Citron Research, said he is now betting on the stock ahead of the company's earnings report on Wednesday. Left's firm has held a short position on the stock for more than two years, and he confirmed he is still suing both Tesla and CEO Elon Musk.
The shares closed up 12.7 percent on the day at $294.14 a share, as the rest of technology-related stocks were under heavy pressure.
"Citron is long Tesla as the Model 3 is a proven hit and many of the TSLA warning signs have proven not to be significant," said Left in a blog post Tuesday. "Plain and simple – Tesla is destroying the competition."