The U.S. stock market opened with the Dow Jones down 0.6%, the S&P 500 index up 0.27%, and the Nasdaq up 0.5%. Corning (GLW.N) rose 7.8%, as Meta will pay Corning up to $6 billion in procurement fees. General Motors (GM.N) climbed 5.4%, with fourth-quarter core profits exceeding expectations.