Kioxia's 540% Stock Surge: Tokyo firm tops global charts; AI memory demand drives record gains

While Nvidia and other US tech giants saw significant gains in 2025, Kioxia Holdings of Tokyo emerged as the world’s best-performing stock. The memory chip maker’s shares surged 540%, driven by the AI boom’s insatiable demand for NAND flash memory to store massive datasets, outperforming all others in the MSCI World Index.

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