Kioxia loses two-thirds of market value from June peak

NAND flash maker Kioxia Holdings has lost about two-thirds of its market value since June 2026, when it became Japan's most valuable listed company. The decline comes as Chinese memory rivals gain ground.

• Kioxia's market value fell to one-third of its June peak in four months
• In June it was Japan's most valuable listed company
• Chinese NAND makers are increasing competitive pressure