US tech sell-off drags down Japanese and Korean chipmaker stocks

Shares of chipmakers in Japan and South Korea fell sharply on Thursday, July 2, 2026, after a sell-off in US tech stocks soured investor sentiment across Asia, Bloomberg reports.

What triggered the sell-off

The drop fits a broader pattern: the US tech sector has been unusually volatile in recent months amid questions about whether massive investments in AI infrastructure will pay off. When big tech stocks slide on Wall Street, the effect almost always spills over to Asian component suppliers — above all chipmakers and chip equipment makers, whose businesses depend heavily on orders from US customers.

In Japan, the stocks traditionally most sensitive to these swings are semiconductor equipment makers Tokyo Electron, Advantest, and Screen Holdings, along with chip designer Renesas. In South Korea, the market's key bellwethers are Samsung Electronics and SK Hynix, the world's two largest memory chipmakers, whose shares react especially strongly to news about memory demand and pricing.

Asian chip stocks have swung this sharply before: the market has repeatedly responded with sell-offs to any sign of a possible slowdown in AI infrastructure spending or a shift in the balance of power among suppliers. Each time, it showed how dependent not only US but also Asian capital markets have become on sentiment around artificial intelligence.

Where Apple's talks with China come in

• The sell-off happened on Thursday, July 2, 2026
• Chipmaker stocks in Japan and South Korea took the hit
• At the same time, reports emerged that Apple is in talks with Chinese memory makers ChangXin Memory Technologies and Yangtze Memory Technologies
• Investors read the news as a sign of rising competition in the semiconductor market

According to Bloomberg, investor concerns were amplified by reports that Apple is negotiating to buy memory chips from China's ChangXin Memory Technologies and Yangtze Memory Technologies. If one of the world's largest memory buyers starts diversifying its suppliers toward China, that could mean fewer orders for the traditional market leaders — South Korea's Samsung and SK Hynix, which investors have long seen as the main beneficiaries of booming memory demand from AI data centers.

What it means

The episode shows how tightly the semiconductor market is now tied to two factors at once: the AI investment cycle, which is driving demand for memory chips, and the geopolitics of supply, where new Chinese players are reshaping the balance of power among the industry's traditional leaders. Any news that could shift demand between suppliers now feeds almost instantly into chipmaker share prices across Asia.