The stock market opened today with a weak performance in the US market, mainly due to uncertainties in the global macroeconomic environment. Specifically, the Dow Jones Industrial Average opened down 0.09%, the S&P 500 index fell slightly more at 0.1%, and the Nasdaq Composite Index dropped by 0.12%. Investors remain cautious in the face of global economic fluctuations and policy uncertainties, leading to a general decline in the major indices.