Kioxia soars 540% in 2025, leads MSCI World as AI‑fueled NAND demand lifts shares

After debuting on the Tokyo Stock Exchange in December, Kioxia delivered about 540% year-to-date gains in 2025, topping all MSCI World constituents. The chipmaker's market value is roughly ¥5.7 trillion ($36 billion), supported by AI-driven NAND demand and customers such as Apple and Microsoft, according to its November quarterly filing.