The stock had fallen 8 percent on Wednesday after Elon Musk tweeted that Tesla was working exclusively with longtime partner Panasonic to supply batteries for its upcoming Model 3, the company's first mass-market car. Panasonic shares rallied nearly 4 percent on Wednesday after his comments.
http://www.nbcnews.com/tech/tech-news/tesla-may-source-samsung-battery-energy-storage-products-n588741
http://www.nbcnews.com/tech/tech-news/tesla-may-source-samsung-battery-energy-storage-products-n588741