Kioxia Extends World’s Top Stock Performance as AI Fuels Outlook

Kioxia Holdings Corp.’s shares surged 15% after soaring AI demand helped the Japanese chipmaker deliver a better-than-anticipated results outlook, cementing its position as the world’s best performing major stock of 2026.

Kioxia’s stock rose by the most in a month during early morning Friday trade in Tokyo. Its roughly 120% rise this year outpaces every other member of the MSCI World Index, and comes on the heels of a 10-fold surge that made it 2025’s top performer as well.