Kioxia's Topix index weighting is set to triple after a 660% stock surge driven by AI storage demand, briefly making it Japan's most valuable company.

The growth of AI has fueled a remarkable turnaround for Kioxia, which was previously seen as an example of Japan's chipmaking struggles but whose stock price has surged more than…

Kioxia's Topix index weighting is set to triple after a 660% stock surge driven by AI storage demand, briefly making it Japan's most valuable company.