US Stock Market | Wall Street ends lower as tech rally stalls, AI fervor wanes after Nvidia results

Market Overview - A shift back to cyclical sectors helped the Dow Jones Industrial Average remain close to even, while the Philadelphia SE Semiconductor index's decline significantly impacted the Nasdaq, leading to its largest drop [1][6] - All three major U.S. stock indexes are on track for modest weekly losses, with the S&P 500 and Nasdaq expected to close lower for the month, while the Dow is set to post an advance in February [2][6] Technology Sector Performance - Technology shares, particularly in software and chips, have experienced volatility as investors grapple with concerns over the high costs and potential disruptions from emerging AI technology [2][6] - Nvidia's fourth-quarter results exceeded analysts' expectations, but the company faces challenges with year-on-year revenue growth deceleration [4][6] - The S&P 500 lost 37.12 points (0.53%) to close at 6,909.01 points, while the Nasdaq Composite fell 272.93 points (1.18%) to 22,879.14 points [5][6] Company-Specific Developments - The S&P 500 software and services index saw gains, supported by Salesforce shares, despite the company providing weaker-than-expected revenue guidance [5][6] - Trade Desk's stock declined following a disappointing revenue forecast amid increasing competition from larger rivals [6] - J.M. Smucker's shares surged due to strong quarterly profit and sales estimates [6][7] - C3.ai's stock tumbled after it issued a weaker-than-expected sales forecast for the current quarter and announced a 26% reduction in its global workforce [6][7] - Celsius Holding's stock rose after the energy drink maker surpassed quarterly revenue estimates [7]