Asian markets showed a clear split on Thursday, with South Korea surging on an AI-driven chip rally while parts of Southeast Asia and Taiwan stayed cautious amid rising oil prices and Middle East tensions. The divergence highlights how investors are increasingly treating emerging markets as a collection of distinct country stories rather than a single trade.
South Korea's AI Chip Rally
South Korea's benchmark index jumped as much as 4.2% and held above the 7,000 level, powered by gains in two of its largest companies. SK Hynix rose more than 4%, and Samsung Electronics climbed over 3%, as the global AI investment cycle continued to boost demand for memory chips used in data centers and AI applications.
Billy Leung, a strategist at Global X ETFs Australia, framed South Korea as a key beneficiary of the AI boom, noting that the country's semiconductor giants are well-positioned to supply the high-bandwidth memory (HBM) chips that power AI models. This rally follows a broader trend where Asia chip stocks rallied after big tech companies reaffirmed their AI spending plans, reassuring markets that demand remains strong.
Why ASEAN and Taiwan Held Back
While South Korea rode the AI wave, other parts of Asia took a more cautious stance. ASEAN markets, including Indonesia, Thailand, and Malaysia, faced headwinds from rising oil prices, which threaten to increase import costs and fuel inflation in net oil-importing economies. Bank Indonesia's decision to hold interest rates steady added to the cautious mood, as the central bank signaled it is monitoring inflation risks from higher energy costs.
Taiwan, another key tech hub, also showed restraint. Although Taiwan is home to major chipmakers like TSMC, its market is more exposed to geopolitical tensions in the Middle East, which could disrupt supply chains and energy flows. The cautious tone in these markets contrasts sharply with South Korea's optimism, underscoring the fragmented nature of the region's investment landscape.
What It Means for Investors
For everyday investors, this split is a reminder that not all emerging markets move in lockstep. South Korea's gains are tied to a specific theme—AI chip demand—that may not benefit other countries equally. The South Korean economy recently beat GDP forecasts, growing at 3.7% in the second quarter, though momentum is slowing. That backdrop adds context to the rally, but investors should watch whether chip demand can sustain the momentum.
Oil prices remain a wild card. If tensions in the Middle East escalate, energy costs could rise further, hurting economies that rely on imports. That could weigh on ASEAN markets and even spill over to South Korea if the global growth outlook dims. On the other hand, a de-escalation could lift sentiment across the region.
Investors should also note that central bank policies are diverging. Bank Indonesia's rate hold reflects a cautious approach, while other central banks may adjust rates based on local inflation and growth dynamics. This means bond yields and currency movements could vary widely, affecting returns for those holding emerging-market assets.
Looking Ahead
The key question is whether South Korea's AI rally can broaden out to other sectors and markets. If chip demand continues to grow, it could support further gains in South Korea and potentially lift other tech-heavy markets like Taiwan. However, the cautious stance in ASEAN suggests that investors are pricing in risks from oil and geopolitics, which could persist in the near term.
For now, the message is clear: Asia is not a monolith. Investors should pay attention to country-specific drivers—whether it's AI chips in South Korea, oil prices in Indonesia, or geopolitical risks in Taiwan—rather than treating the region as a single bet. Diversification across markets and sectors remains a prudent strategy.
