The U.S. stock market opened with significant losses as major indices fell sharply. The Dow Jones Industrial Average dropped 0.66%, the S&P 500 Index fell 1.6%, and the Nasdaq Composite decreased by 2.3%. Memory-related stocks were particularly hard hit, with SanDisk plummeting 11.3% and Micron Technology down 11.8%. Additionally, SpaceX saw a 2.8% decline, marking its fourth consecutive day of losses and reducing its market capitalization to below $200 billion.