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China, Hong Kong stocks rebound as AI chip demand optimism returns

China, Hong Kong stocks rebound as AI chip demand optimism returns
Markets · 2026
Photo · Eleanor Whitfield for Daily Digest Invest
By Eleanor Whitfield Markets Editor-in-Chief Oct 28, 2026 3 min read

China and Hong Kong stock markets rebounded on [day], snapping a two-day losing streak, as a strong earnings report from South Korean chipmaker SK Hynix reignited enthusiasm for artificial intelligence-related shares. The bounce came despite lingering concerns about slowing AI spending and tighter restrictions on advanced chip exports to China.

By midday, China's CSI300 index and the Shanghai Composite were each up 0.7%, while Hong Kong's Hang Seng added 0.4%. The tech-heavy Hang Seng Tech Index outperformed, climbing 1.8%.

SK Hynix's earnings spark AI optimism

The rally was led by technology stocks after SK Hynix, one of the world's largest memory chipmakers, posted better-than-expected quarterly results. The company reported a sharp jump in operating profit, driven by strong demand for high-bandwidth memory (HBM) chips used in AI data centers. Investors took this as a sign that AI hardware demand can still surprise to the upside, easing recent worries about a potential slowdown in AI spending.

SK Hynix's performance is closely watched by global markets because it is a key supplier to AI chip leader Nvidia and a bellwether for the AI supply chain. The company's record profit, as noted in a related report on SK Hynix's record profit, underscores the ongoing strength of AI-related demand.

The positive sentiment also lifted other Asian markets, with South Korean stocks rallying on AI chip optimism, though currency pressures from a strong dollar remain a headwind for the region.

National team support and broader market context

Adding to the recovery, China's state-backed "national team" continued to buy A-shares, providing a floor under the market. These state funds have been active in supporting Chinese equities during periods of volatility, a factor that investors often watch for signs of official backing.

The rebound comes after a two-day slide that was driven by concerns over tightening US restrictions on advanced chip exports to China and fears that AI spending might be peaking. However, SK Hynix's results suggest that demand for AI hardware remains robust, at least for now.

Investors are also keeping an eye on broader economic data and central bank moves. For instance, hot Australian inflation has left stocks flat as rate hike bets build, and upcoming decisions from the Federal Reserve could influence global risk appetite. A rally in Japanese chip stocks ahead of the Fed decision also reflects the regional tech momentum.

What it means for investors

For everyday investors, this rebound highlights how sensitive tech and AI-related stocks are to earnings from key suppliers like SK Hynix. When a major chipmaker beats expectations, it can lift sentiment across the entire AI supply chain, from semiconductor manufacturers to cloud providers and even Chinese tech giants.

However, the market's volatility also underscores the risks. Geopolitical tensions, export controls, and the possibility of an AI spending slowdown remain overhangs. Investors should be prepared for continued swings in these sectors.

The "national team" buying provides some support, but it is not a guarantee of sustained gains. It is a reminder that Chinese markets can be influenced by policy measures, which can create both opportunities and uncertainties.

As always, diversification is key. While AI optimism is driving gains today, a balanced portfolio can help weather the inevitable ups and downs. Keep an eye on upcoming earnings from other tech companies and any policy announcements that could affect the sector.

In the near term, investors will likely watch whether the AI rally can sustain itself, especially with the Fed's rate decision on the horizon and ongoing trade tensions. The resilience of AI demand, as evidenced by SK Hynix, will be a crucial factor.

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