MU.TO is trading 3.17% up on September 22, 2026, driven by renewed AI-infrastructure optimism, tight memory supply, and strong data-center demand lifting DRAM and HBM-related shares.

  • South Korean semiconductor exports surged 259% year over year during September 1–20, reinforcing expectations for robust memory demand and pricing.
  • Falling Treasury yields are supporting growth-oriented technology stocks, while broad market gains remain modest.
  • The move appears sector-driven rather than company-specific, with chipmakers broadly advancing after the September 21 technology rebound.