ExxonMobil Corp. (XOM) has now overtaken Tesla Inc. (TSLA). What Happened: Until last month, Tesla held the title of the most shorted stock for four straight months as investors expected the company's share price to fall, Business Insider reported. Using a "crowded score" to rank short bets, HazelTree gave ExxonMobil a score of 99, the highest level, indicating stocks that were shorted by the largest percentage of funds the firm tracks. Tesla is close behind with a score of 97. The firm's comprehensive data collection covers 12,000 global stocks and more than 700...