From Kioxia to Nikkei: The AI Chip Rollercoaster's Market Impact

Japan's Nikkei 225 index plunged as much as 4.4% on Friday, leading a broad Asian tech sell-off as investors dumped AI-linked chip stocks. The index fell to 63,896.48, extending weekly losses. Chip-equipment maker Advantest and tech investor SoftBank each lost around 9%, while Taiwan's Taiex shed 4% despite TSMC posting record quarterly profits. The spotlight, however, remains on Kioxia.

Kioxia’s 16% Plunge: A New Front in the Chip Crisis

Memory chipmaker Kioxia nosedived nearly 16% on Friday, extending a monthly slide that has erased 44% of its value. A rally exceeding 600% since January briefly crowned it Japan’s most valuable company, surpassing Toyota, before a $185 billion market-cap wipeout.

The Breaking Point of the AI Boom

■Daiwa Securities strategist Yugo Tsuboi warned of recurring "silicon cycle" vulnerabilities in the chip sector.

■Rising scrutiny of Chinese memory makers and signs of global memory price stabilization complicate further earnings upgrades.

■Bain Capital’s full exit from Kioxia signals market peak concerns.

■Leveraged positions held by Japanese retail traders heighten exposure to accelerated selling.

Shifts in AI Investment Strategies

Kioxia’s collapse mirrors a sector-wide repricing. A Wall Street chip stock gauge slumped 4.2% Thursday, overshadowing TSMC’s solid earnings outlook. Investors are rotating out of richly valued chip names into underperforming sectors. The Nikkei has shed trillions of yen over three weeks.

Markets are converging this cycle’s short-term AI surge into a correction demanding more grounded investment decisions. The European Central Bank (ECB) rate policies could act as a buffer, but investors must continue questioning AI-driven expectations.