China's three major A-share indices finished Wednesday's session with solid gains, capping a day of steady upward momentum. The ChiNext Index and the STAR 50 Index emerged as the top performers, with the semiconductor supply chain taking the lead.
By the closing bell, the Shanghai Composite Index had climbed 0.94% to 3,911.87 points, while the Shenzhen Component Index advanced 1.72% to 13,640.87 points. The ChiNext Index surged 2.25% to 3,372.68 points, the STAR 50 Index rose 2.88% to 1,652.63 points, and the Beijing Stock Exchange 50 Index gained 1.79% to 1,044.34 points. Trading activity picked up notably, with combined turnover on the Shanghai and Shenzhen exchanges reaching approximately 2.08 trillion yuan, up about 254 billion yuan from the previous session. Market breadth was firmly positive, with 4,234 stocks advancing against 1,152 decliners and 179 unchanged. Limit-up moves totaled 80, while only one stock hit the downside limit, with roughly 76% of all listed shares finishing in the green.
Sector performance showed clear leadership from the semiconductor supply chain, alongside strength in newly listed stocks and real estate. Selective activity was also visible in consumer staples and innovative pharmaceuticals. On the flip side, coal, banking, and auto manufacturing saw modest pullbacks.
Market Drivers Behind the Broad Advance
The overall index gains were driven by robust buying interest across the board, with the ChiNext and STAR 50 benchmarks leading the charge. The significant expansion in trading volume, up roughly 254 billion yuan from the prior day, underscored heightened market participation. The breadth of gains, with over 76% of stocks moving higher, highlighted strong risk appetite among investors.
The semiconductor complex was the standout performer of the day, with the sector index leaping 3.95% to top all industry rankings. Semiconductor equipment, memory chips, advanced packaging, and lithography names all experienced collective surges. This momentum was supported by industry reports indicating that delivery cycles for key semiconductor manufacturing equipment components from South Korean suppliers have more than doubled. Additionally, a senior executive at Micron Technology suggested that new memory supply is unlikely to begin ramping until 2028, further tightening supply expectations.
In the healthcare space, a newly released five-year development plan for the pharmaceutical industry, jointly issued by the Ministry of Industry and Information Technology and nine other government departments, fueled strength in innovative drug developers and contract research organizations.
Hot Sector Highlights
Semiconductor Supply Chain: Shares across semiconductor equipment, computing chips, memory, and lithography surged sharply, dominating the top of the daily gainers list. Tianjin Tuolensi Technology hit its 20% daily limit, while Huatian Technology, Chengbang Co., Ltd., Shengyang Semiconductor, and Bocom System also locked in limit-up moves. Beyond component delivery delays, reports that memory suppliers expect no meaningful capacity increases until 2028 added to the bullish sentiment.
Recent IPOs: Newly listed and near-term IPO stocks saw a wave of buying. Xihua Technology extended its winning streak to four consecutive limit-up sessions, while Tengxin Precision, Magang Co., and Hai'an Group also hit their daily ceilings. Shengu Group, trading under its new listing symbol, closed its second day up 177.74%, having at one point spiked nearly 300% intraday.
Real Estate Development: Property developers rallied, with China Vanke, Shihui Bank, and Greenland Holdings all hitting limit-up. Seazen Holdings also touched the upside limit intraday before closing 9.87% higher. The move followed news that a revised regulation on housing provident fund management is set to take effect on September 20. At a State Council Information Office briefing, the Ministry of Housing and Urban-Rural Development indicated plans to expand provident fund coverage during the 2026-2030 period, including supporting voluntary contributions from self-employed individuals and those in flexible employment.
Sectors Losing Ground
Coal, banking, and auto manufacturing were the notable laggards, each posting modest declines. Dayou Energy fell 3.71% to lead coal sector losses, while China Minsheng Bank dropped 2.54% among banks. In autos, Zotye Auto and Jiangling Motors declined 3.38% and 3.75%, respectively. Zotye's drop was particularly noteworthy given it had hit the upside limit in the prior session before giving back ground.
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