Chinese and Australian equities advanced on Tuesday, while Japanese, South Korean and Hong Kong shares declined as investors assessed oil prices, currency intervention and continued volatility in semiconductor stocks.
HONG KONG — August 4, 2026 — Asian stock markets traded mixed on Tuesday, despite the strong overnight rally on Wall Street, as investors balanced improved global risk appetite against renewed pressure on technology shares and persistent geopolitical uncertainty in the Middle East.
Mainland Chinese equities edged higher and Australia’s benchmark gained more than 1%. In contrast, Japan’s Nikkei 225, South Korea’s Kospi and Hong Kong’s Hang Seng moved lower.
The uneven performance showed that Monday’s advance in US equities had not completely restored confidence across Asia. Semiconductor valuations, volatile oil prices and unusual intervention in the Japanese yen remained important sources of uncertainty.
Asian market overview
| Market | Index | Approximate movement |
|---|---|---|
| Japan | Nikkei 225 | −0.3% |
| South Korea | Kospi | −1.3% |
| Hong Kong | Hang Seng | −0.5% to −0.7% |
| Mainland China | Shanghai Composite | +0.2% to +0.3% |
| Mainland China | CSI 300 | Approximately +1.1% |
| Australia | S&P/ASX 200 | +1.2% |
Figures reflect the latest available Asian-session snapshot on August 4 and may differ slightly between market-data providers.
The broader MSCI index of Asia-Pacific shares outside Japan initially advanced before reversing direction as the session developed. It was subsequently down approximately 0.5%.
Reuters reported that Asian markets opened cautiously higher following Wall Street’s rally, but performance later became more divided. The Associated Press also reported mixed trading across the region.
Japan declines as bond yields attract attention
Japan’s Nikkei 225 fell approximately 0.3% after fluctuating between gains and losses during the session.
Technology and semiconductor shares initially received support from the strong overnight performance of the Nasdaq. Kioxia Holdings and semiconductor-equipment company Lasertec were among the early gainers as investors returned selectively to AI-related businesses.
However, the wider Japanese market struggled to maintain its advance. Investors remained cautious following a weak auction of ten-year Japanese government bonds, which suggested softer demand for the country’s debt.
Weak auction demand can push bond yields higher because investors require more attractive returns to hold government securities. Rising yields may, in turn, place pressure on equity valuations and increase financing costs.
The result was particularly significant because Japan is attempting to balance several competing objectives:
- controlling inflation;
- maintaining orderly bond markets;
- preventing excessive yen depreciation;
- avoiding a sharp tightening of financial conditions;
- supporting economic growth.
These tensions are likely to remain an important influence on Japanese assets.
Yen intervention remains under scrutiny
Currency markets continued to react to the recent coordinated intervention by US and Japanese authorities intended to support the yen.
The Japanese currency weakened slightly against the dollar on Tuesday, although it remained approximately 4% stronger than the level recorded before the intervention.
The operation was unusual because coordinated currency action between Japan and the United States is relatively rare. It initially strengthened the yen, but questions remain over whether intervention can produce a lasting change without corresponding adjustments in monetary policy and interest-rate expectations.
A stronger yen can reduce the value of overseas earnings when Japanese exporters convert foreign revenue into their domestic currency. It can therefore weigh on automobile, machinery and electronics companies.
Conversely, yen appreciation may benefit businesses that import energy, food and raw materials by reducing their costs.
Investors will now assess whether authorities intervene again if the currency resumes its decline.
South Korean shares resume their decline
South Korea’s Kospi fell approximately 1.3%, reversing an early advance that reached as much as 2.1%.
The reversal underlined the exceptional volatility affecting South Korean equities following the recent sell-off in semiconductor and artificial-intelligence stocks.
South Korea had been one of the world’s strongest-performing markets earlier in 2026, supported by enthusiasm surrounding memory chips, AI servers and demand for advanced computing infrastructure. That rapid appreciation also produced crowded positions and increasingly demanding valuations.
The market subsequently suffered historic declines after results from SK Hynix failed to meet extremely high expectations. Although the company reported substantial profit growth, investors questioned whether the pace of AI-related spending and memory demand could justify the sector’s valuations.
The Kospi rebounded by almost 18% on July 31, but Tuesday’s decline showed that confidence remains fragile.
A Reuters analysis indicated that some institutional investors believe the most intense phase of the Korean sell-off may be nearing an end. Nevertheless, short-term movements are likely to remain highly sensitive to foreign capital flows and semiconductor news.
AI trade enters a more selective phase
The performance of South Korean and Japanese technology shares reflects a wider change in the global AI investment theme.
Investors are no longer treating every company associated with artificial intelligence as an equal beneficiary. Greater attention is now being paid to:
- actual AI-related revenue;
- capital expenditure and its effect on free cash flow;
- operating margins;
- competitive pressure;
- memory-chip supply;
- customer concentration;
- the time required to generate returns from infrastructure investment.
Companies with established customers and visible cash flows may continue to attract capital. Businesses whose valuations depend primarily on future expectations face greater risk of sharp corrections.
Asian markets are particularly exposed to this shift because the region contains many of the world’s largest semiconductor, memory, electronic-component and equipment manufacturers.
Chinese shares edge higher
Mainland Chinese equities outperformed several regional markets.
The Shanghai Composite gained approximately 0.2% to 0.3%, while the blue-chip CSI 300 advanced by around 1.1% in the latest available trading.
The difference between the two indices suggested stronger demand for large, established Chinese companies than for the market as a whole.
Chinese equities remain influenced by competing factors. Investors are looking for evidence that government measures are supporting domestic consumption and economic activity, while continuing to monitor property-sector weakness, industrial competition and relations with the United States.
The Shanghai Composite remained more than 5% lower over the preceding month, despite retaining a positive year-on-year performance, according to Trading Economics market data.
The recent correction may have created more attractive valuations, but confidence in a sustained recovery will depend on corporate earnings and clearer signs of stronger private-sector demand.
Hong Kong falls as technology sentiment remains fragile
Hong Kong’s Hang Seng Index declined approximately 0.5% to 0.7%.
The market was affected by caution towards major Chinese technology companies and uncertainty over whether Wall Street’s rebound would extend to Asian growth stocks.
Hong Kong frequently reacts more strongly than mainland exchanges to changes in international investor sentiment because of its greater exposure to foreign capital and globally listed Chinese businesses.
The Hang Seng’s weakness, alongside gains in the CSI 300, therefore illustrated a division between internationally exposed growth stocks and mainland blue-chip shares.
Investors will continue to monitor earnings from Chinese internet companies, capital flows through the Stock Connect programmes and further policy announcements from Beijing.
Australia outperforms the region
Australia’s S&P/ASX 200 gained approximately 1.2%, making it one of the strongest major Asian-Pacific benchmarks.
The Australian market benefited from its relatively lower exposure to expensive semiconductor shares and its larger representation of banks, mining groups and mature dividend-paying companies.
This market structure can provide some protection when investors rotate away from highly valued technology businesses.
Australian equities are nevertheless sensitive to commodity prices, Chinese demand and domestic interest-rate expectations. The sustainability of Tuesday’s advance will partly depend on whether the improvement in global risk appetite continues.
Oil rebounds after Monday’s sharp decline
Oil prices recovered moderately during Asian trading after falling heavily in the previous session.
Brent crude initially gained approximately 0.6%, trading near $84 per barrel, and subsequently extended its rebound. Prices nevertheless remained close to their lowest levels in several weeks.
Oil had declined after US President Donald Trump postponed further military action against Iran, reducing fears of an immediate disruption to Middle Eastern energy supplies.
However, Iran disputed suggestions that active negotiations were taking place. The absence of confirmed diplomatic progress means geopolitical risk remains elevated.
Oil prices are particularly important for Asian markets because many regional economies depend heavily on imported energy. A sustained decline could:
- reduce inflationary pressure;
- improve national trade balances;
- lower costs for manufacturers and transportation companies;
- support household purchasing power;
- reduce pressure on central banks to raise interest rates.
Renewed escalation would produce the opposite effect, with South Korea, Japan and India among the large economies especially sensitive to higher imported-energy costs.
Wall Street rally provides limited support
Asian markets entered Tuesday’s session after a strong performance in the United States.
On Monday, the S&P 500 gained approximately 1.5%, the Dow Jones Industrial Average advanced more than 600 points and the Nasdaq Composite climbed more than 2%.
Lower oil prices, falling Treasury yields and renewed demand for large technology companies supported US equities. Strong American manufacturing data also improved confidence in the economic outlook.
Nevertheless, Asia’s mixed response demonstrated that regional concerns remain important. Wall Street’s gains were not enough to eliminate uncertainty surrounding Asian chipmakers, Japanese bond yields or the Chinese economic recovery.
What investors should watch next
The principal events likely to influence Asian markets include:
- further developments involving the United States and Iran;
- movements in Brent and WTI crude prices;
- additional intervention or policy signals concerning the yen;
- Japanese government-bond yields;
- US labour-market indicators;
- earnings from major American technology companies;
- semiconductor results and capital-spending guidance;
- economic data and policy announcements from China;
- foreign investor flows into South Korean equities.
US employment reports will be particularly important because they could alter expectations for Federal Reserve policy. Higher American interest rates generally strengthen the dollar and may draw capital away from emerging Asian markets.
Asian market outlook
Tuesday’s session presented a divided picture.
Chinese blue chips and Australian equities advanced, but Japanese, South Korean and Hong Kong markets struggled. The results suggest that investors remain willing to take risk, although they are becoming considerably more selective.
The sharp reversal in South Korea demonstrated that confidence in AI-related shares has not yet fully recovered. Japan faces additional uncertainty from currency intervention and rising bond yields, while Hong Kong continues to reflect cautious international sentiment towards Chinese growth companies.
Lower oil prices would provide meaningful support to many Asian economies. However, the lack of a confirmed diplomatic agreement between Washington and Tehran leaves markets vulnerable to another reversal.
For now, Asian equities are moving from a broad technology-driven rally towards a market in which earnings quality, valuation and exposure to energy costs matter increasingly.
This article is provided for informational purposes only and does not constitute investment advice. Market figures reflect an intraday snapshot on August 4, 2026, and may change before all regional exchanges close.
Sources: Reuters — Asian stocks and global market developments, Reuters — Yen and Japanese bond-market pressures, Associated Press — Asia-Pacific market report, Trading Economics — Chinese market data
