The U.S. stock market closed higher on Wednesday, driven by strong gains across major indices. The S&P 500, a broad measure of the market, rose 0.97% to close at 4,280.15. The Nasdaq Composite, which includes many technology companies, gained 1.45% to close at 12,964.86. The Dow Jones Industrial Average, which tracks 30 large companies, added 0.30% to close at 34,283.06. Several factors contributed to the market's positive performance. Investors were encouraged by strong earnings reports from major companies, including Apple and Alphabet. Additionally, the Federal Reserve's recent interest rate hike was in line with expectations, which provided some stability to the market. The market's gains were driven by a variety of sectors. Technology companies, including Microsoft and Nvidia, led the way with strong performances. Healthcare and financial stocks also contributed to the positive momentum.