Stock Market Today, Dec. 19: AI Optimism and Inflation Data Buoys Stocks

Market Performance - The S&P 500 rose 0.88% to 6,834.50, the Nasdaq Composite gained 1.31% to 23,307.62, and the Dow Jones Industrial Average added 0.38% to 48,134.89, all influenced by volatile quad-witching flows [1] - AI-linked and broader tech names led market gains, with Oracle and Micron Technology boosting prices, while consumer stocks like Nike and Lamb Weston lagged due to disappointing earnings and guidance [2] Economic Indicators - Reports of cooling inflation and a softer labor market have strengthened expectations for a potential Federal Reserve rate cut early next year [4] - The University of Michigan revised its December consumer sentiment expectations downwards, citing high prices and weak hiring as contributing factors [5] Sector Challenges - Mixed results from Nike and Lamb Weston highlight ongoing challenges in consumer-facing sectors, with Nike beating analyst estimates but experiencing a stock decline due to concerns over profits and sales in China [5] - Apollo Global Management has warned of stagflation risks next year, particularly if AI does not meet expectations [4]