Tesla’s roaring start to 2018 is costing short sellers $1 billion By: MarketWatch January 18, 2018 at 15:33 PM EST A financial analytics firm calculates that bearish Tesla speculators have a mark-to-market loss around $1.1 billion this year so far. Read More >> Related Stocks: AT&T Inc Alibaba Group Holding Ltd Apple Ford Motor General Motors Tesla, Inc.