https://www.reuters.com/article/us-tusimple-ipo/self-driving-truck-maker-tusimple-valued-at-8-5-billion-in-nasdaq-debut-idUSKBN2C22AR >Shares of TuSimple Holdings Inc made a lackluster U.S. stock market debut on Thursday, giving the self-driving truck maker a market capitalization of $8.5 billion.