Tesla has had a tumultuous few days of trading—and now its stock looks set to end its four-week winning streak. Tesla stock has fallen 1.4% to $336.44 in early trading, while the S&P 500 and Dow Jones Industrial Average were down 1% and 0.

Shares in Tesla Inc. recently traded nearly 2% higher, even as the S&P 500 index dipped, as Chief Executive Elon Musk said he planned to cut back on his political spending and declared that the car company’s sales are improving.