Tesla slides back below $300 as a lack of confidence overshadows Model 3 milestone (TSLA)

Max Whittaker / Getty Images Tesla has finally reached its goal of producing 5,000 Model 3 sedans per week. However, the stock slid back below the $300 level it has struggled with all year as its production problems continue to wreak havoc. Follow Tesla's stock price in real-time here. Shares of Tesla sank more than 4% in trading Thursday, sending the stock once again below the $300 threshold that it has flirted with since the beginning of the year. The slump comes as a third safety investigatio...