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.

Elon Musk said in a post on X Saturday that he had set up the “American Party” to compete against the Republican and Democratic parties.

Tesla (NASDAQ:TSLA) investors may have another drama-filled week after Elon Musk's dissatisfaction with the Republican's tax and spending bill led him to form a new political party. Wedbush Securities analyst Dan Ives said Tesla (NASDAQ:TSLA) CEO Elon Musk starting his own political party is not the news that investors would like to hear.