[U.S. Stock Market Opening: Mixed Performance Among the Three Major Indexes] The three major U.S. stock indexes showed mixed performance, with the S&P 500 up 0.04%, the Dow Jones down 0.07%, and the Nasdaq down 0.08%. In large-cap tech stocks, Meta fell 1.12%. Among Chinese concept stocks, Pinduoduo fell 1.16%, Trip.com fell 1.20%, NIO fell 1.45%, JD.com fell 1.56%, Li Auto fell 2.23%, and Alibaba fell 3.42%.