U.S. stock markets experienced volatility and declines over several sessions in mid-April 2025 amid ongoing tariff uncertainties and cautious remarks from Federal Reserve Chairman Jerome Powell. On April 15, the S&P 500 closed down 9.34 points, or 0.17%, at 5,396.63, while the Dow Jones Industrial Average fell 155.83 points, or 0.38%, to 40,368.96. The following day, renewed tariff concerns contributed to a sharp sell-off, with the Dow dropping as much as 900 points intraday before settling 699 points lower. Powell's comments on slower economic growth and a cautious stance on early interest rate cuts intensified investor worries. On April 17, markets remained mixed; the S&P 500 edged up 0.13% to 5,282.70, the Nasdaq declined 0.13% to 16,286.45, but the Dow plunged 527 points, or 1.33%, to 39,142.23, pressured by a 22% drop in UnitedHealth shares following disappointing earnings. Overall, tariff negotiations and interest rate outlooks remained key factors influencing market performance during this period.