The feud reignited on Monday when Musk, who spent hundreds of millions on Trump's re-election, renewed his criticism of Trump's tax-cut and spending bill, which would eliminate subsidies for electric vehicle purchases that have benefited Tesla, the leading U.S. EV maker. That bill passed the Senate by a narrow margin midday Tuesday.

Recent social media barbs between the president and the EV maker’s chief executive have investors worried again. Here’s the latest. Shares of Tesla are down in premarket trading today after President Donald Trump and the EV maker’s CEO,