Tesla short-sellers have swung back to the SolarCity side of the business. Here's why. (TSLA)

Tesla After Tesla posted a surprise 3rd-quarter profit, short-sellers found themselves burned as the stock surged past $300. Tesla's automotive business is largely based now on its Model 3, a vehicle that endured a fraught birth but has now stabilized. With Tesla now selling around 250,000 cars a year, a short position based on the car business is busted. Short-sellers have now pivoted to the weak solar business and have been encouraged by allegations the Tesla merger with SolarCity in 2016 was ...