Sector performance today showed Defense leading the gainers with a 0.65% rise, followed by consumer services at 0.15% and banking at 0.08%. On the losing side, coal dropped 2.52%, telecommunications fell 2.31%, and media declined 2.16%, according to market data.

Market breadth was negative with 1,536 stocks advancing against 3,897 decliners. Total turnover on A-share markets contracted to 1.82 trillion yuan, down 231.854 billion yuan from the previous session. Renewed conflict in the Middle East pushed oil prices higher, while bond market selling and rising expectations of Federal Reserve rate hikes weighed on Wall Street overnight, with all three major US indices closing lower.

Under pressure from external factors, China's three major stock indices opened lower and traded in a narrow band throughout the day, with the ChiNext Index falling more than 2%. By the close, the Shanghai Composite Index was down 0.97%, the Shenzhen Component Index fell 1.88%, the ChiNext Index dropped 2.39%, the STAR 50 Index lost 1.82%, while the Beijing Stock Exchange 50 Index bucked the trend with a 2.50% gain. More than 3,800 stocks declined across the market. Among 30 CITIC first-tier industries, only Defense, consumer services and banking managed modest gains.

On the trading front, fiberglass and lab-grown diamond sectors led the advance. Military-related stocks, new listings, gas utilities, telecom operators, banks and power companies showed relative strength. Agricultural sectors weakened significantly, non-ferrous metals and coal suffered the steepest losses, while AI applications, semiconductors, chips, robotics and select computing hardware segments all underperformed.

Detailed Market Analysis

The fiberglass concept led gains after a global industry leader formally raised September electronic cloth prices, with thick cloth up 15% and thin cloth up 20%. China Merchants Securities noted that sustained high demand for AI computing power and a supply-demand gap unlikely to ease materially between 2026 and 2027 could support higher valuations for leading fiberglass producers.

Lab-grown diamond concepts also featured prominently. According to Zhongtai Securities' estimates, the market for diamond heat spreaders used in AI chips could reach approximately 8.7 billion yuan in 2026, potentially expanding to 59.2 billion yuan by 2030, representing a compound annual growth rate exceeding 50%.

Liquid-cooled server concepts remained active. CCTV Finance reported that liquid cooling production lines in Shandong and Guangdong are operating at full capacity, with orders for core CDU equipment already booked through the end of 2026 and some delivery timelines extending into 2027.

Military sectors including aircraft carriers, defense IT, AVIC-related stocks, commercial space and large aircraft performed well. This followed news of a major breakthrough in high-end remote sensing dynamic imaging technology. Hualong Securities pointed out that satellite internet is entering an accelerated construction phase, with supportive government policies for commercial space development, steadily improving commercial rocket launch capacity, faster verification of reusable technology and ambitious domestic constellation plans. Rocket and satellite manufacturing represent the core value of the industry chain, with market potential reaching hundreds of billions of yuan.

Recently listed stocks on the Beijing Stock Exchange surged, helping the BSE 50 Index gain over 2% against the broader downtrend. Some institutions suggest these new listings, with their higher proportion of national-level "little giant" and champion enterprises, combined with fundraising projects entering capacity ramp-up phases, offer better earnings quality and growth flexibility than existing listings, making them attractive targets for early positioning.

Gas, telecom, banking and power stocks posted modest gains. On the downside, agriculture weakened sharply, non-ferrous metals and coal led losses, while lithium battery and solar sectors continued their decline. AI applications, semiconductors, chips, robotics and certain computing hardware segments underperformed. Brokerages, diversified financials and insurance also struggled.

Market Outlook

Looking ahead, China Merchants Securities believes the market remains in an earnings-driven uptrend, with second-quarter results further validating high-growth sectors such as technology and resources. Market logic is shifting from valuation-driven to earnings-driven momentum. On industry trends, AI continues to accelerate with domestic large language models flourishing and overseas tech giants' earnings reaffirming AI's strong momentum. In terms of timing, the rally may extend through mid-to-late September, while approaching the National Day holiday, historical calendar effects suggest market style could become relatively defensive.

CITIC Construction Investment Securities suggests that in September, the market environment may remain characterized by stock-driven competition and structural opportunities. The firm recommends two focuses: first, sectors with sustained growth verification including AI computing power, non-ferrous metals, innovative drugs and select export-oriented manufacturing; second, institutional underweight positions with defensive high-dividend attributes such as banks, insurance and securities, alongside sectors with earnings improvement potential like batteries, industrial metals, energy metals and basic chemicals, plus cyclical turnaround candidates in steel and hog farming.

Guohai Securities notes that based on tech giants' earnings guidance and supply chain tracking, AI computing infrastructure is increasingly crowding out electronic manufacturing resources. Recent sharp price increases in MLCC and PCB segments suggest the "price hike chain" could remain a high-probability direction with solid earnings support through 2027. Meanwhile, domestic computing power supply chains may demonstrate significant earnings flexibility by 2027, with continued attention warranted for semiconductor manufacturing, equipment, materials and domestic computing power sectors.

Key Developments

China has achieved an important breakthrough in high-end remote sensing dynamic imaging technology. According to the State Administration for Market Regulation, a key laboratory based at China Jiliang University, in collaboration with Beihang University and other institutions, has overcome the challenge of balancing lightweight design, low power consumption and high dynamic imaging performance. The team achieved centimeter-level ultra-high resolution 3D imaging under small, low-power constraints, addressing accurate scene capture and analysis needs for low-altitude economy and intelligent vision industries.

For the first time at the national level, 158 primary care disease categories have been clarified. The National Healthcare Security Administration recently released version 3.0 of its disease-based payment grouping scheme and technical specifications. National Health Commission officials stated that considering current grassroots institutional capabilities and future patient needs, the first batch includes 31 DRG and 127 DIP primary care disease categories. Local governments should reference the national list while considering regional medical resource distribution, grassroots service capacity and resident healthcare needs to reasonably determine local primary care categories.