By Joel Jose (Reuters) -Tesla shares fell nearly 7% in premarket trading on Monday, after CEO Elon Musk's plans to launch a new U.S. political party reignited investor concerns about his commitment to the electric-vehicle maker's future.

Tesla investors hoping that CEO Elon Musk would stay out of politics after leaving his position in the Trump administration are going to be sorely disappointed—again. Disappointment is rarely good for stock prices.

"The America Party is formed to give you back your freedom," Musk said, days after Trump debated deporting him.