TMTPOST -- U.S. markets tumbled Monday after President Donald Trump reignited criticism of Federal Reserve Chair Jerome Powell, raising fresh concerns over the central bank’s independence. The Dow Jones Industrial Average dropped 971.82 points, or 2.48%, to close at 38,170.41. The S&P 500 lost 124.50 points, or 2.36%, ending at 5,158.20, while the tech-heavy Nasdaq Composite fell 415.55 points, or 2.55%, to 15,870.90. All 11 sectors of the S&P 500 finished in the red, with consumer discretionary and technology leading declines—down 2.86% and 2.72%, respectively. Consumer staples posted the smallest losses, slipping 1.34%. Heavyweights in the "Magnificent Seven" tech group were hit particularly hard. Tesla sank 5.75%, Nvidia dropped 4.51%, and Amazon, AMD, and Meta each lost around 3%. Industrial bellwether Caterpillar also slid 2.77% amid broader sector weakness.