US midday market brief: S&P 500 flat as Nvidia, Micron-led chip rally offsets losses

Core Viewpoint - The S&P 500 index is experiencing a stable opening in 2026, with semiconductor stocks, especially Nvidia and Micron, showing strength to offset declines in other technology sectors [1] Group 1: Market Performance - The S&P 500 opened with little movement, indicating a cautious market sentiment [1] - Semiconductor stocks, particularly Nvidia and Micron, are performing well, contributing positively to the overall market despite weaknesses in other tech stocks [1] - The Dow Jones Industrial Average has slightly moved into positive territory, reflecting a mixed performance across major indices [1]