[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 down 0.21%, the Dow Jones up 0.09%, and the Nasdaq down 0.47%. In major tech stocks, AMD fell 1.71%, and SpaceX dropped 1.93%. For Chinese concept stocks, Pinduoduo rose 3.03%, Alibaba fell 1.55%, NIO dropped 2.18%, NetEase declined 2.35%, Bilibili fell 2.58%, Li Auto dropped 2.64%, and XPeng Group fell 2.75%.