U.S. stock markets experienced fluctuations over the past few days, with the S&P 500 and NASDAQ showing varied performance. On March 12, the S&P 500 closed up 29.83 points, or 0.54%, at 5,601.90, while the NASDAQ gained 1.2%. However, the following day, March 13, the S&P 500 fell by 79.50 points, or 1.42%, closing at 5,519.80, and the NASDAQ sank by 2%. On March 14, the markets rebounded, with the S&P 500 opening up 50.37 points, or 0.91%, at 5,571.89, and the NASDAQ rising 226.83 points, or 1.31%, to 17,529.85. By mid-afternoon, the S&P 500 extended its gain to 2%, while the NASDAQ 100 climbed 2.4%. The Dow Jones also saw an increase of 263.50 points, or 0.65%, reaching 41,077.07.