Japan's Nikkei 225 fell more than 2% as renewed skepticism over the sustainability of heavy AI infrastructure spending weighed on technology and chip-related shares, extending a rocky stretch that saw the benchmark plunge into correction territory just days earlier.
The Broader AI Spending Debate
The latest decline reflects a theme that's been building across global markets for weeks: growing investor unease that the enormous capital being poured into AI data centers, chips, and related infrastructure may not be matched by comparable near-term returns. That skepticism has repeatedly hit Japan's tech-heavy Nikkei especially hard, given the index's outsized weighting toward AI bellwethers like SoftBank Group, Tokyo Electron, and Advantest.
A Painful Recent Stretch for the Nikkei
The renewed selling follows an especially rough patch for Japanese equities. Just over a week earlier, the Nikkei tumbled 4% in a single session to close at 64,141.12, officially entering correction territory — commonly defined as a decline of at least 10% from a recent peak — after Wall Street's own tech-led selloff spread across Asian markets. That decline marked the index's worst weekly loss since April 2025, with Tokyo Electron sinking 8.2%, Advantest tumbling 7.2%, and SoftBank Group shedding 9% in a single day. Notably, the Topix — Japan's broader, market-cap-weighted benchmark — fell a comparatively smaller amount during that same stretch, suggesting the Nikkei's steeper losses reflected concentrated weakness in a handful of expensive AI-linked names rather than a uniform market-wide retreat.
Why the Concern Keeps Resurfacing
Underlying the repeated bouts of selling is a straightforward question that's dogged the AI trade for months: whether the enormous, ongoing capital expenditure commitments from chipmakers and hyperscalers can actually be justified by the revenue and productivity gains AI is expected to eventually deliver. Even strong individual earnings reports haven't fully calmed those nerves — Taiwan Semiconductor Manufacturing Co. posted record quarterly profit during the prior correction but still saw its shares fall roughly 3.6%, as investors treated the strong results as an opportunity to take profits rather than a reason for renewed confidence, even after TSMC raised its 2026 capital expenditure guidance to a range of $60 billion to $64 billion.
A Rotation Away From AI Winners
Market strategists have described the pattern as a rotation rather than a wholesale market panic. As SPI Asset Management's Stephen Innes put it during the prior week's selloff, investors have been "taking profits from the first-half winners and moving toward areas that were left behind" — a dynamic that has repeatedly hit the same cluster of AI infrastructure names hardest while leaving other parts of the market comparatively more insulated.
What's Next
With AI spending skepticism continuing to resurface in waves rather than resolving cleanly in either direction, Japanese equities are likely to remain volatile in the near term. Investors will be watching upcoming earnings from major chipmakers and AI infrastructure players for further signals on whether current capital expenditure levels can be sustained, along with any fresh commentary from SoftBank and other AI bellwethers that have borne the brunt of the recent selling.