KIOXIA is trading at ¥14,340, up 13.76%, as memory-chip shares strengthen after SK hynix reported record earnings and said demand would outstrip supply for years.

  • Expected TOPIX index-fund buying tied to a free-float adjustment taking effect October 30 may provide an additional tailwind.
  • One report estimates roughly Â¥0.8 trillion in purchases at the October 29 close.
  • Available evidence points to sector and index-rebalancing flows, not a new KIOXIA-specific announcement.