Although it has been a good year overall for the markets, with the S&P 500 up 7% as of Thursday's market close, shares of electric vehicle maker Tesla (TSLA 3.13%) have been going in the opposite direction and are down about 21%. The company has been facing a lot of adversity in recent quarters and there's been plenty of negative press surrounding the business and its CEO, Elon Musk, which has undoubtedly weighed on the stock. If things don't improve soon, Tesla could be on track for one of its worst perfor ...