Short-seller Andrew Left just flagged the 'short of the year' for 2016 and the stock is tanking

Short seller Andrew Left, the founder of California-based Citron Research, Tweeted that Mobileye is the "short of the year" for 2016. 

Shares of Mobileye fell to $40.20, down $2.75, or -6.40% after the Tweet.

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Mobileye is a software company that develops technology for self-driving cars.

Back in September, Citron issued a bearish report on the company. Citron said that it has a $25 price target.

We've reached out to Left for further comment.

Here's a chart: 

Google Finance