Big Tech drags down S&P 500 amid jitters over highly valued stock market
1. U.S. stocks fell in November, DJIA down 0.5%. 2. High valuations in Big Tech raise market vulnerability. 3. October layoffs surged, particularly in tech and warehousing. 4. S&P 500 down 1.3%, with concerns over stretched valuations. 5. Nvidia’s upcoming earnings could reaffirm or challenge market optimism.