DRAM is trading at $55.85, down 3.11%, as memory-chip stocks sell off after CXMT reported progress on a denser 4F² DRAM design. - CXMT is targeting a year-end launch for DDR5 server-memory products; detailed specifications remain undisclosed. - Memory chips are down 4.07% in regular trading, while broad U.S. market indications are mixed. - The move appears sector-driven rather than tied to a DRAM-specific announcement.