Wall Street: S&P 500, Nasdaq edge lower as chip stocks dip, big tech earnings in focus

US equities opened lower on Wednesday, with the S&P 500 down 0.16 percent at 7,497.47 and the Nasdaq Composite declining 0.56 percent to 25,693.72, dragged by weakness in chip stocks. The Dow Jones Industrial Average was the only gainer, up 0.12 percent at 52,287.14. Investor focus is on the upcoming first batch of Big Tech earnings, which could set the tone for global markets including Indian indices.