US Major Indices Rise Amid Volatility: Energy and Tech Drive Market Rotation On September 19, 2026, the US stock market showed an upward trend amid volatility, with all three major indices rising. The market is finding a balance between expectations for Federal Reserve policy shifts and economic fundamentals. Energy and technology sectors were the main drivers of the market that day, with clear signs of sector rotation, and investor sentiment tended to be cautiously optimistic. The S&P 500 index rose 0.82% to 6,234.56 points; the Dow Jones Industrial Average rose 0.65% to 39,876