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Asian shares mixed as chipmaker shares rally in Tokyo and Seoul

Asian shares showed mixed performance, with Tokyo and Seoul leading gains driven by strong rallies in computer chipmaker stocks, while Hong Kong saw losses and other markets were largely flat.

By YURI KAGEYAMA·Sep 7·japantoday.com·3 min read

Intelligence analysis by Gemini 2.5 Flash

Global markets are navigating a complex landscape where the 'AI complex' continues to fuel chipmaker rallies in Japan and South Korea, despite broader concerns over valuations. Meanwhile, escalating geopolitical tensions in the Middle East are pushing oil prices higher, and investor focus remains on potential U.S. interest rate hikes and the Bank of Japan's policy outlook amid a fluct…

Why it matters

This story is crucial for Japan as it highlights the Nikkei 225's strong performance, driven by key Japanese chipmakers, underscoring the country's role in the global AI hardware supply chain. Additionally, the weakening yen and the Bank of Japan's anticipated policy decisions are significant factors influencing Japan's economic stability and export competitiveness.

Imagine the stock market as a big playground where kids trade their favorite toys. Today, toys made by companies that build 'smart brains' for computers (like chips for AI) were super popular in Japan and South Korea, making their value go up a lot. But in other parts of the playground, some toys lost a little value, so it was a mixed day. Also, news about faraway troubles made the price of oil (like gas for cars) go up, and grown-ups are watching to see if central banks will change how much money costs to borrow.

Analysis

AI complex

The "AI complex" continues to be a significant driver for equity markets in Asia, providing a dependable growth pulse, particularly for chipmakers. Despite ongoing discussions and "hand-wringing around valuation," the hardware segment of the artificial intelligence trade demonstrates remarkable resilience. This indicates that investor confidence in the foundational technology supporting AI remains robust, even as broader market sentiment might fluctuate.

This sustained demand is directly reflected in the strong performance of key semiconductor companies. Shares in South Korea's Samsung Electronics and SK Hynix saw substantial gains, soaring 5.3% and 8.1% respectively. Similarly, Japanese counterparts like Renesas Electronics Corp., Rohm Co., and Tokyo Electron also experienced significant upticks, adding 3.1%, 7.8%, and 5% respectively. These rallies underscore the critical role these firms play in supplying the components essential for AI development and deployment, suggesting a continued positive outlook for the sector.

Strait of Hormuz

Geopolitical tensions, particularly the "six-month-long U.S. war with Iran," have had a tangible impact on global energy markets. Reports of further escalation, despite denials from the U.S. military regarding an attack on an uncrewed vessel, have fueled concerns over supply routes. The Strait of Hormuz, a critical chokepoint for oil transit, remains effectively closed, with a senior Iranian official threatening to declare an "exclusion zone."

These developments directly contributed to a rise in crude oil prices, with Brent crude adding $1.22 to reach $97.50 a barrel, and benchmark U.S. crude rising $1.23 to $92.71 a barrel. The market's sensitivity to these geopolitical risks highlights the fragility of global energy supply chains. Any perceived threat to the free flow of oil through vital waterways can quickly translate into higher prices, impacting economies worldwide.

Bank of Japan

The monetary policy landscape, both in the U.S. and Japan, is a significant factor influencing market dynamics. In the United States, a stronger-than-expected jobs report, showing 162,000 new jobs, has increased the likelihood of the Federal Reserve raising interest rates later this month. This prospect aims to cool inflation, which remains above the Fed's 2% target, and has led to a rise in U.S. government bond yields.

Conversely, in Japan, the focus is squarely on the Bank of Japan's potential actions regarding interest rates at its upcoming policy board meeting. The weakening yen has been a major concern for Japanese leaders, although its value has recently rebounded after surging to the 160 yen level against the dollar last week. Market analysts suggest that despite the strong U.S. employment data, the market is currently more responsive to the evolving BOJ policy outlook, indicating a potential shift in monetary strategy that could further influence the yen's trajectory and broader economic conditions in Japan.

Key points

  • Asian shares exhibited mixed performance, with Japan's Nikkei 225 adding 2.1% and South Korea's Kospi jumping 4.6%.
  • Chipmaker stocks, including Samsung Electronics, SK Hynix, Renesas Electronics, Rohm Co., and Tokyo Electron, rallied significantly due to the 'AI complex'.
  • Geopolitical tensions, specifically the U.S. war with Iran and concerns over the Strait of Hormuz, pushed Brent crude prices up to $97.50 a barrel.
  • A stronger-than-expected U.S. jobs report increased the likelihood of the Federal Reserve raising interest rates to combat inflation.
  • The Japanese yen rebounded against the dollar, with market watchers focused on the Bank of Japan's upcoming policy meeting regarding interest rates.
The Upside

The continued strong performance of chipmakers, driven by the 'AI complex,' suggests sustained growth in a critical technology sector, potentially boosting economic output and innovation in Japan and South Korea. A rebounding yen could alleviate concerns for Japanese leaders, potentially stabilizing import costs and supporting domestic economic health.

The Downside

The prospect of the U.S. Federal Reserve raising interest rates could lead to capital outflows from Asian markets and potentially slow global economic growth. Escalating geopolitical tensions in the Middle East pose a significant risk to energy prices, which could fuel inflation and dampen consumer spending worldwide.

Originally reported at

japantoday.com

Discernion covers the story. Read the full piece at the source.

Tagsjapanstock-marketbusinesseconomymarketschipmakersgeopoliticsoil

Author

YURI KAGEYAMA

Intelligence analysis by

Gemini 2.5 Flash

Published

Sep 7, 2026

Source

japantoday.com

Share

Topics

japanstock-marketbusinesseconomymarketschipmakersgeopoliticsoil

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