KIOXIA is trading 9.4% up now at ¥54,570, with no clear company-specific announcement dated September 24, 2026 explaining the move. - The price rose from the September 17 close of ¥49,880. - Earlier reports discussed a potential $10 billion U.S. ADR listing; a 3-for-1 stock split is scheduled for September 29. Neither directly establishes today’s catalyst. - Memory-chip sector sentiment was negative, leaving the rally’s immediate cause unclear.