U.S. stocks fell at the opening bell on Tuesday after the Trump administration put eight Chinese companies on a blacklist, threatening to overshadow trade negotiations at the end of the week. The S&P 500 SPX, +1.59% fell 0.7% to around 2,918. The Dow Jones Industrial Average DJIA, +1.33% shed 237 points, or 0.9%, to around 26,241. Nasdaq Composite COMP, +2.26% retreated 0.8% to 7,893. Chinese Vice Premier Liu He is set to visit the U.S. on Oct. 10-11. But Bloomberg News reported the Commerce Department would put several Chinese companies on the so-called entity list, raising worries the measures could set a bad tone for upcoming trade talks. In company news, shares of Domino's Pizza Inc. DOM, -0.60% held their ground even after the company posted weaker-than-expected earnings for its third quarter.