证券研究报告 2025 年 9 月 19 日 星期五 【A 股市场大势研判】 指数放量调整 市场表现： | 指数名称 | 收盘点位 | 涨跌幅 | 涨跌 | 上证指数分时图 | | --- | --- | --- | --- | --- | | 上证指数 | 3831.66 | -1.15% | -44.68 | | | 深证成指 | 13075.66 | -1.06% | -139.80 | | | 沪深 300 | 4498.11 | -1.16% | -52.91 | | | 创业板 | 3095.85 | -1.64% | -51.49 | | | 科创 50 | 1380.35 | 0.72% | 9.92 | | | 北证 50 | 1591.17 | -1.01% | -16.27 | | 资料来源：东莞证券研究所，iFinD 数据 申万行业表现前五 申万行业表现后五 概念板块表现前五 ◼ 概念板块表现后五 电子 0.93% 有色金属 -3.56% F5G 概念 1.45% 金属铅 -3.94% 通信 0.19% 综合 -2.85% 共封装光学 （CPO） 1.35% 金属锌 -3.88% 社会 ...

Market Overview - The three major indices experienced slight gains, with the Shanghai Composite Index closing at 3388.81, up by 0.04% [2] - The Shenzhen Component Index closed at 10175.59, up by 0.24%, while the CSI 300 Index rose by 0.12% to 3874.97 [2] Sector Performance - The top-performing sectors included Electronics (1.50%), Communication (1.39%), and National Defense & Military Industry (0.95%) [3] - Conversely, the worst-performing sectors were Beauty Care (-1.73%), Real Estate (-1.35%), and Building Materials (-1.22%) [3] Concept Index Performance - The PCB concept led the concept sectors with a gain of 3.29%, followed by the Sci-Tech New Shares at 2.80% [3] - The weakest concept sectors included Glyphosate (-2.82%) and Rare Earth Permanent Magnet (-2.57%) [3] Market Outlook - The market showed mixed performance with many stocks declining despite the slight rise in indices, indicating a lack of significant profit-making opportunities [4] - The market is expected to remain in a range-bound state due to ongoing divergence between bulls and bears, with potential for a rebound supported by economic resilience and policy backing [6] Policy Developments - The 2025 Lujiazui Forum introduced significant financial opening measures, including the establishment of a trading report library and a digital RMB international operation center [5] - The government plans to support consumer goods replacement policies with a budget of 300 billion yuan, of which 162 billion yuan has already been allocated [5]