U.S. stock markets experienced significant declines as rising Treasury yields and concerns over future interest rate cuts weighed heavily on investor sentiment. The Dow Jones Industrial Average fell by 400 points, marking its worst day since early September. The S&P 500 index recorded its first back-to-back losses since September, reflecting a broader trend of declining stock prices across major indexes. The technology sector was particularly hard-hit, contributing to the overall market downturn. Investors are now closely monitoring upcoming earnings reports, including those from Tesla, Boeing, and Coca-Cola, as they seek to gauge the impact of these economic factors on corporate performance. The current market environment has led to a cautious outlook among investors, with many tempering their expectations for potential rate cuts from the Federal Reserve.