证券时报·2025-10-30 09:07Market Overview - A-shares experienced a decline on October 30, with the Shanghai Composite Index falling below the 4000-point mark, and the ChiNext and STAR Market indices dropping nearly 2% [1][2] - The Shanghai Composite Index closed down 0.73% at 3986.9 points, while the Shenzhen Component Index fell 1.16% to 13532.13 points [2] Sector Performance - The coal sector saw significant declines, with companies like Kailuan Energy and Antai Group hitting the daily limit down [2] - The brokerage sector weakened, with firms such as China International Capital Corporation and Oriental Fortune dropping over 3% [2] - The AI industry chain stocks plummeted, with companies like Tengjing Technology and Tianfu Communication falling over 10% [2] - The innovative drug concept also faced downturns, with Hanyu Pharmaceutical dropping over 10% and WuXi AppTec falling over 8% [2][13] Lithium Battery Sector - The lithium battery industry chain stocks surged, with Penghui Energy hitting the daily limit up with a 20% increase, and Tianhua New Energy rising nearly 15% [5][6] - Other notable performers included Wanrun New Energy and Xinwangda, both rising over 10% [5] - The overall market for lithium battery stocks is bolstered by increasing demand for household energy storage batteries and the growth of AI computing centers [7] Quantum Technology Sector - The quantum technology sector saw renewed activity, with Fujida rising nearly 20% and Guodun Quantum exceeding a 17% increase, reaching a price above 600 yuan [9][10] - The government has emphasized the importance of quantum technology in future economic growth, with expected policy support [11] Innovative Drug Sector - The innovative drug sector showed weakness, with Hanyu Pharmaceutical reporting a significant drop in stock price despite a strong revenue growth of 82.06% year-on-year [13] - WuXi AppTec announced plans for a share reduction by its controlling shareholder, which may have contributed to its stock price decline [13]