午评：沪指跌0.66% 深圳国企改革、煤炭板块领涨 工程机械、培育钻石板块领跌

Market Overview - The Shanghai and Shenzhen stock markets opened lower on October 23, with significant declines observed after initial rebounds, leading to notable drops by midday [1] - The Shanghai Composite Index closed at 3888.08 points, down 0.66%, with a trading volume of approximately 456.5 billion yuan; the Shenzhen Component Index fell 0.87% to 12883.89 points, with a volume of about 590.7 billion yuan [1] Sector Performance - Shenzhen state-owned enterprise reform concept stocks opened strongly, while low P/E and dividend stocks showed early gains; sectors such as coal, oil, and banking experienced significant increases [1] - Conversely, the engineering machinery and cultivated diamond sectors, which had seen gains in previous sessions, underwent notable corrections, and the tech-focused sectors like CPO concept and semiconductors also faced substantial adjustments [1] Institutional Insights - Huatai Securities highlighted a new action plan from the Shanghai government aimed at promoting high-quality development in the construction industry, which is expected to alleviate growth bottlenecks and optimize the industrial ecosystem [2] - CITIC Construction Investment noted that the humanoid robot sector has retraced its September gains, suggesting that current adjustments may present buying opportunities, especially ahead of Tesla's Q3 report and shareholder meeting [2] Energy Sector Data - The National Energy Administration reported that the total electricity consumption in September reached 888.6 billion kWh, marking a year-on-year increase of 4.5%, with the first and second industries showing growth rates of 7.3% and 5.7%, respectively [3] M&A Development Plans - Shenzhen's financial management bureau released an action plan for promoting high-quality M&A and restructuring from 2025 to 2027, focusing on strategic emerging industries such as integrated circuits, AI, and renewable energy [4] - The plan encourages leading companies to engage in M&A activities that enhance supply chain capabilities and technological advancements, particularly in future industries like synthetic biology and quantum information [4]