Key facts
- Kioxia Holdings has become Japan's most valuable company.
- Kioxia Holdings has surpassed Toyota Motor in market value.
- The surge in Kioxia's value is driven by demand for AI data center chips.
- Kioxia's stock has risen over 670% in 2026.
- South Korea's Kospi index surged 4.6% on Friday.
- Investors returned to AI-related semiconductor stocks on Friday.
- The Kospi index finished the week down 0.5% overall.
- The week was volatile for South Korean stocks.
Kioxia Holdings, a memory chipmaker, has ascended to become Japan's most valuable company, overtaking automotive giant Toyota Motor. This significant shift in market capitalization is attributed to the escalating global demand for chips essential for artificial intelligence (AI) data centers. Kioxia's stock performance has been remarkable, with its shares experiencing a growth of over 670% throughout 2026. This surge highlights the increasing importance of semiconductor technology in the current economic landscape.
