Tesla stock price fell Monday after Musk said he's formed the America Party, the latest development in the billionaire's feud with President Trump.

Mr. Musk’s involvement in politics and his financial support for the president’s campaign were once seen by investors as a benefit to Tesla, fueling a steep rise in company shares after the election last year. That association has now turned into a liability. Tesla shares are down 40 percent from their peak in December.

Tesla's CEO has proved once again that investors in his EV company would prefer that he stay out of politics and focus on the business.

Tesla CEO Elon Musk is lashing out at Wedbush Securities analyst Dan Ives, telling the technology analyst to "Shut up." On his social media platform X on Tuesday, the billionaire posted "Shut up, Dan,