Micron Technology is trading 5.8% up now at $204.25, supported by a broad memory-chip rally tied to sustained AI infrastructure demand.

  • The DRAM memory-chip sector is up 4.23% during the regular session, with tight DRAM and NAND supply supporting stronger sector-wide pricing power.
  • The broader market is mixed, making the move primarily sector-driven; Micron’s September 15 512GB DDR5 server-memory module announcement is supportive background, but no new company-specific catalyst clearly explains September 18’s move.