Elon Musk and Donald Trump hurled insults at each other all day on Thursday after the president’s former ally attacked the bill containing his entire legislative agenda. And though Musk had somewhat backed off his hardline stance a few hours later,

The rift between President Donald Trump and Tesla chief Elon Musk has captivated the world as a political drama, but it has also become a Wall Street spectacle, highlighting the risk to equity markets from the world's biggest stocks.

A breakdown in relations between President Trump and Elon Musk slammed Tesla stock Thursday, along with assets associated with the U.S. leader. Tesla shares regained some ground early Friday. Shares of Musk’s electric-vehicle maker rose around 4% in morning trading.