Acknowledging its dramatic change of course, Citron Research wrote that following significant analysis, it believes the affordable Tesla Model 3 is a hit and is not concerned by previous warning signs.
Tesla (TSLA) reports third-quarter earnings Wednesday, after the market close, and even a bearish analyst admits it will likely be a good quarter.
Mr Left had been known for shorting Tesla shares and is suing the company and its chief executive, Elon Musk, for manipulating its stock price.
"Rumours of the Tesla killers have been as constant and unfounded as Bob Lutz's call for Tesla's bankruptcy", said Citron Research, founded by activist short-seller Andrew Left. Mr Musk said on Twitter.
"On that particular day, I was short the stock".
The reversal does not necessarily signal a broader capitulation by Tesla's other short-sellers.
Manhunt is underway for man accused of killing Atlanta-area police officer
No other officers are hurt and police could not confirm whether or not shots were fired or if any suspects were shot. He had previously worked as a security guard, police said, and his immediate family lives in Southern California.
"Tesla appears to be the only company that can actually produce and sell electric cars", the note said.
Tesla announced record quarterly auto production earlier this month but warned of major problems with selling cars in China due to new tariffs.
CCN reported yesterday that Musk made the tongue-in-cheek quip about offering bitcoin for sale in response to a question from a follower about whether Tesla accounts would soon begin utilising 2-factor authentication for added security.
"The numbers coming out of the company are too compelling", Left said.
Investors have been rattled by Musk's abrupt turnaround on his go-private plan and other recent behavior including smoking marijuana on a live web show.
Less than a week after settling fraud charges with the US Securities and Exchange Commission (SEC), Musk early this month derided the agency on Twitter. His declaration that he could take Tesla private for $420 a share which he made on Twitter ultimately landed him in trouble with the SEC, leading to a $20 million fine and an order to step aside as Tesla chairman for at least 3 years.