$TSLA "At the end of the year, short-sellers betting against Tesla lost $2.9 billion on a mark-to-market basis, according to a https://twitter.com/ihors3/status/1213106808497283072!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+"://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");, managing director of predictive analytics at S3 Partners, a financial-analytics provider. "