US stocks posted weekly gains as investors pushed major indexes higher ahead of the year-end holidays. The S&P 500, Dow Jones, and Nasdaq all finished the week in positive territory. The S&P 500 showed a steady rise, reflecting broad gains across multiple sectors. Technology and energy stocks contributed significantly, helping the index close the week on a strong note. The Dow Jones Industrial Average also recorded gains, driven by increases in key industrial and financial stocks. Several blue-chip companies saw their shares climb as investors reacted to positive earnings reports and economic data. The Nasdaq Composite, known for its heavy technology weighting, continued to…