Shares of Tesla Motors (TSLA) sink, down 9.3% in premarket trading, after taking on a downgrade...

|By:, SA News Editor

Shares of Tesla Motors (TSLA) sink, down 9.3% in premarket trading, after taking on a downgrade by Morgan Stanley to Underweight from Overweight. Analysts with the firm say the transition of TSLA to a reality stock has heightened risk with mass adoption of electric vehicles integral for the company.