ve could lean more hawkish, which would push up financing costs across the economy. That matters because a lot of the AI boom is capital spending on data centers and chips, and higher rates raise the “hurdle” those projects need to clear to look worthwhile. It also hits stock valuations: when rates rise, future profits are worth less in today’s dollars, which tends to pressure high-growth, high-valuation tech first. In Tokyo, that showed up quickly in chip-equipment names like Tokyo Electron (down 3.6%) and Disco (down 4.3%), even as some areas such as retail held up.
Why should I care?
For markets: A 7.9% slide in the Philadelphia Semiconductor Index can ripple into Tokyo Electron and Disco.
Semiconductor and AI-linked stocks often trade like “long-duration” assets, meaning a bigger share of their value depends on earnings expected years from now. When investors start pricing in higher Fed rates, the discount rate used in valuations rises, so those far-off profits get marked down and price-to-earnings multiples can shrink fast. That’s why a US-led repricing in chip stocks can translate into outsized moves in Japan’s chip-equipment leaders, even if the broader market is steadier. For the Nikkei 225, which has heavy exposure to these names, it can mean a choppier ride whenever US semiconductors wobble.