Jim Chanos David Orrell | CNBC

Short-sellers have been looking for weeks to pounce on Tesla, and CEO Elon Musk's incendiary call with analysts Wednesday could just provide more for them to feast on. Bets against the electric car maker have zoomed 41 percent since March 6, according to S3 Analytics, which tracks short interest. That amounts to just shy of $11 billion in short interest, more than double that of Facebook. With shares dropping more than 7 percent at one point Thursday, the flock of traders expecting Tesla to keep falling had reason to feel edified. In all, Tesla shares have slid more than 16 percent since the surge in short-selling, including Thursday's damage.

"Don't let Musk's conference call theatrics fool you. He did not want investors to focus on his rapidly deteriorating finances," Jim Chanos, head of Kynikos Associates, said in an email to Reuters, according to a tweet from Jennifer Ablan, an editor for the wire service. Musk stunned the market Wednesday when he rebuffed multiple analysts during his post-earnings conference call. He called their questions "boring," "bonehead" and "not cool," and spent more than 20 minutes chatting with a YouTuber on the call. Traders punished him for it Thursday. Shares fell as Musk's behavior only intensified worries over the company's cash burn and its ability to meet production expectations. That came even though results were not as bad as analysts had expected. Another famed short-seller, Carson Block at Muddy Waters Capital, wondered whether the confrontation could be an indicator of something bigger happening.