# Asian stock market performance trends

> Live situation record from CLSTR: https://clstr.news/situations/asian-stock-market-performance-trends
> Updated: 2026-10-19T07:43:31.000Z. Sources: 21. Developments: 2.

Asian stock markets have experienced periods of volatility and mixed performance. In late September, the Hang Seng Index opened sharply lower by 513 points, driven by heavy selling pressure in the technology and financial sectors. Major losses were recorded in prominent internet companies such as Alibaba, Tencent, and Meituan, alongside declines in banking stocks like HSBC and Standard Chartered.

By mid-October, market trends showed more varied results across the region. While Japan’s Nikkei 225 declined, other markets saw gains. The South Korean Kospi rose by 1.8 percent, supported by the automotive sector, and Chinese indices like the CSI-300 and Shanghai Composite edged upward. The growth in Chinese markets followed economic data indicating that industrial production and retail sales exceeded expectations, with third-quarter GDP growing by 4.5 percent.

On October 19 and 20, 2026, market movements remained divided. The South Korean KOSPI saw a strong recovery, with gains reaching as much as 3.6 percent due to bargain hunting in technology and automobile stocks such as Hyundai and KIA. China’s CSI 300 recorded slight gains following positive industrial production and retail sales data. Conversely, Japan’s Nikkei 225 experienced a decline, pressured by weakness in AI and semiconductor-related stocks including SoftBank Group and Tokyo Electron. In Southeast Asia, the Stock Exchange of Thailand faced downward pressure, finishing slightly lower after consecutive sessions of losses.

## Claims

- Japan's Nikkei 225 index declined by 0.6 percent to 64,917 points. (corroborated by 5 sources)
- The South Korean Kospi index increased by 1.8 percent to 5,768 points. (corroborated by 2 sources)
- China's CSI-300 index rose by 0.1 percent to 4,175 points. (single source)
- Automaker stocks Hyundai and KIA each gained more than 4 percent in Seoul. (single source)
- China's industrial production increased by 5.5 percent year-on-year in September. (single source)
- China's retail sales grew by 1.1 percent, exceeding expectations. (single source)
- China's third-quarter GDP grew by 4.5 percent year-on-year. (single source)
- Samsung Electronics rose 1.2 percent and SK Hynix rose 0.4 percent. (single source)

## Timeline

### 2026-10-19: Asian markets show mixed performance amid China economic data

Asian markets saw mixed results: South Korea's Kospi rose 1.8% led by automakers, while Japan's Nikkei fell 0.6% despite positive Chinese economic data.

18 sources. https://clstr.news/cluster/asian-markets-show-mixed-performance-as-kospi-and-china-indices-rise

### 2026-09-30: Hang Seng Index opens sharply lower amid tech and banking sell-off

The Hang Seng Index opened sharply lower after the National Day holiday, with major tech and financial stocks like JD Health, Alibaba, and HSBC facing significant declines.

5 sources. https://clstr.news/cluster/asian-markets-show-mixed-performance-in-hong-kong-and-taiwan

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Cite as: Asian stock market performance trends. CLSTR, https://clstr.news/situations/asian-stock-market-performance-trends