Asia Markets Diverge: Japan and Korea Buck Tech Selloff on AI Optimism

Asia Markets Show Divergence: Japan and Korea Buck Tech Selloff on AI Optimism

Asian markets displayed a notable divergence this week. Despite a pullback in Wall Street tech stocks overnight due to profit-taking, Japan's Nikkei 225 and South Korea's KOSPI indices rose against the trend, driven by optimism surrounding artificial intelligence (AI), highlighting regional confidence in the AI supply chain.

Wall Street Tech Retreat, Asian AI Stocks Get a Boost

In Tuesday's U.S. stock trading, the tech-heavy Nasdaq index declined, with some large-cap tech companies posting losses. Market analysts attribute this mainly to profit-taking after a strong rally, rather than a deterioration in fundamentals. However, this pullback did not spill over into Asian markets. Instead, semiconductor and AI-related stocks in Japan and South Korea saw buying support, buoyed by expectations for Micron Technology's earnings and a positive industry outlook. Reports suggest that Micron's upcoming quarterly results are seen as a bellwether for sustained demand for AI chips, directly boosting sentiment for similar companies in Japan and South Korea.

Nikkei: Dual Drivers of AI and Yen Weakness

The Nikkei 225 index held firm in Wednesday trading, with semiconductor equipment makers, data center-related firms, and AI software developers leading gains. Market participants noted that beyond the AI theme, the yen's relatively weak level provided additional earnings support for export-oriented Japanese tech companies. Investors generally believe that Japanese companies hold a global leading position in AI chip manufacturing equipment and materials, giving the Nikkei greater resilience during tech stock pullbacks.

Korea's KOSPI: Memory Chip Giants Lead Rebound

The Korea Composite Stock Price Index (KOSPI) also rose, driven primarily by memory chip giants like Samsung Electronics and SK Hynix. As major global suppliers of AI memory chips such as HBM, their stock prices are highly correlated with AI demand. Market analysis indicates that while near-term uncertainties remain for global PC and smartphone demand, robust demand for high-end memory from AI servers provides stable growth momentum for Korean chip firms. Additionally, the South Korean government's recent announcement of semiconductor industry support policies further boosted market confidence.

Mixed Performance in Other Asian Markets

In contrast to the strength in Japan and South Korea, China's A-shares and Hong Kong stocks showed relative weakness, pressured mainly by macroeconomic data and geopolitical factors. Australian stocks also edged lower, with declines in energy and mining sectors offsetting tech gains. Overall, Asian markets exhibited clear structural divergence under the AI theme: markets in Japan and South Korea, with core positions in the AI supply chain, attracted capital, while others were more influenced by their respective domestic fundamentals.

Outlook: Can the AI Theme Persist?

Analysts believe this divergence in Asian markets may continue in the near term. As long as capital expenditure in AI remains strong and key companies like Micron report without major surprises, Japanese and Korean tech stocks could continue to command a premium. However, investors should also be wary of risks: if the Fed delays rate cuts, tightening global liquidity, or if AI application adoption falls short of expectations, currently high-valuation sectors could face correction pressure. Overall, AI remains the core narrative for global tech investment in 2025, and Asian markets are leveraging their supply chain advantages to occupy a key position in this wave.