Reporter, MoneyWatch Mary Cunningham is a reporter for CBS MoneyWatch. Before joining the business and finance vertical, she worked at "60 Minutes," CBSNews.com and CBS News 24/7 as part of the CBS News Associate Program. Tesla shares closed down 14% on Thursday following the heated exchange, with Mr. Trump threatening to strip Musk's companies of their government contracts. The stock was up $15.20, or more than 5%, to $299.90 as of 10:45 a.m. EDT. Wedbush tech analyst Dan Ives said the spat unnerved Tesla investors, he remained optimistic the stock would rebound. "Musk needs Trump and Trump needs Musk for many reasons, and these two becoming friends again will be a huge relief for Tesla shares," he wrote in a research note Friday. Tension between Musk and Mr. Trump "does not change our firmly bullish view of the autonomous future looking ahead that we value at $1 trillion alone for Tesla," Ives added, referring to Tesla's push into robo-taxis and self-driving cars. Musk's net worth on Thursday plunged $34 billion because of the fall in Tesla shares, according to the Bloomberg Billionaires Index. In addition to Tesla, Musk owns The Boring Company, Neuralink, SpaceX, X (formerly known as Twitter) and xAI. Tesla share prices have fallen 26% this year. More from CBS News