Market Performance - The large fund concept sector increased by 2.74% on December 8, with Jiangbolong leading the gains [1] - The Shanghai Composite Index closed at 3924.08, up 0.54%, while the Shenzhen Component Index closed at 13329.99, up 1.39% [1] Stock Highlights - Jiangbolong (301308) closed at 273.00, up 14.64% with a trading volume of 252,100 shares and a transaction value of 6.541 billion [1] - Saiwei Electronics (300456) closed at 53.65, up 11.35% with a trading volume of 1,295,000 shares and a transaction value of 6.769 billion [1] - Baiwei Storage (688525) closed at 117.57, up 8.85% with a trading volume of 328,200 shares and a transaction value of 3.787 billion [1] - Other notable stocks include Shengke Communication (688702) up 7.19%, Huahong Semiconductor (688347) up 4.87%, and Guoxin Technology (688262) up 4.68% [1] Capital Flow - The large fund concept sector saw a net inflow of 2.329 billion from main funds, while retail investors experienced a net outflow of 1.053 billion [2] - The main funds' net inflow and retail investors' net outflow indicate a shift in investment dynamics within the sector [2] Individual Stock Capital Flow - Jiangbolong (301308) had a main fund net inflow of 288 million, while retail investors saw a net outflow of 136 million [3] - Saiwei Electronics (300456) experienced a main fund net inflow of 147 million, with retail investors facing a net outflow of 177 million [3] - Other stocks like Huahong Semiconductor (688347) and Zhongwei Company (688012) also showed significant capital flow patterns, indicating varied investor sentiment [3]

Core Insights - The electronic ETF (159997) and chip ETF Tianhong (159310) have shown strong performance, with significant inflows and notable increases in the underlying indices they track [1][2][3] Fund Performance - As of December 8, 2025, the electronic ETF (159997) recorded a transaction volume of 33.48 million yuan, with the underlying index rising by 2.52% [1] - The chip ETF Tianhong (159310) had a transaction volume of 10.41 million yuan, with its index increasing by 2.76% [2] - Over the past 20 trading days, the electronic ETF attracted a total of 29.41 million yuan, while the chip ETF attracted 12.28 million yuan [2] Sector Highlights - The electronic ETF focuses on the semiconductor and consumer electronics sectors, covering hot industries such as AI chips, automotive electronics, 5G, cloud computing, and printed circuit boards (PCB) [2] - The top ten weighted stocks in the electronic ETF include major players like Industrial Fulian, Haiguang Information, and Luxshare Precision [2] Industry Trends - In the first ten months of the year, China's smartphone production exceeded 1 billion units, with a slight year-on-year increase of 0.7% [6] - The integrated circuit production reached 386.6 billion units, marking a year-on-year growth of 10.2% [6] - The electronic information manufacturing industry achieved a revenue of 14 trillion yuan, up 8.3% year-on-year, and a total profit of 570 billion yuan, up 12.8% [6] Strategic Developments - China Telecom is accelerating the construction of computing power infrastructure and enhancing the adaptation of domestic computing power chips, focusing on AI applications [7] - The company aims to provide end-to-end services and promote green and low-carbon initiatives in its operations [7] Institutional Perspectives - Guojin Securities remains optimistic about AI-PCB and core computing hardware, as well as the Apple supply chain and self-controlled beneficiary industries, citing strong demand and growth potential [9]

本公司董事会及全体董事保证公告内容不存在任何虚假记载、误导性陈述或者重大遗漏，并对其内容的 真实性、准确性和完整性依法承担法律责任。 重要内容提示： ● 本次会议是否有被否决议案：无 一、会议召开和出席情况 （一）股东大会召开的时间：2025年12月4日 （二）股东大会召开的地点：江苏省苏州市工业园区江韵路258号公司会议室 （三）出席会议的普通股股东、特别表决权股东、恢复表决权的优先股股东及其持有表决权数量的情 况： ■ （四）表决方式是否符合《公司法》及公司章程的规定，大会主持情况等。 本次会议的表决方式是现场投票和网络投票相结合的方式，会议的召集、召开符合《中华人民共和国公 司法》（以下简称"《公司法》"）《上市公司股东会规则》《上海证券交易所科创板股票上市规则》等 有关法律、行政法规、部门规章、规范性文件和《苏州盛科通信股份有限公司章程》（以下简称"《公 司章程》"）的有关规定。 （五）公司董事、监事和董事会秘书的出席情况 2、公司在任监事3人，出席3人； 3、董事会秘书翟留镜女士出席了本次会议，其他高级管理人员陈凛先生、王国华先生、许俊先生、王 峰先生、成伟先生列席了本次会议。 二、议案审议情况 （ ...

证券代码：688702 证券简称：盛科通信 公告编号：2025-036 苏州盛科通信股份有限公司 2025年第一次临时股东大会决议公告 本公司董事会及全体董事保证公告内容不存在任何虚假记载、误导性陈述或 者重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 重要内容提示： 本次会议是否有被否决议案：无 （五） 公司董事、监事和董事会秘书的出席情况 二、 议案审议情况 （一） 非累积投票议案 一、 会议召开和出席情况 （一） 股东大会召开的时间：2025 年 12 月 4 日 （二） 股东大会召开的地点：江苏省苏州市工业园区江韵路 258 号公司会议室 （三） 出席会议的普通股股东、特别表决权股东、恢复表决权的优先股股东及 其持有表决权数量的情况： | 1、出席会议的股东和代理人人数 | 90 | | --- | --- | | 普通股股东人数 | 90 | | 2、出席会议的股东所持有的表决权数量 | 326,187,104 | | 普通股股东所持有表决权数量 | 326,187,104 | | 3、出席会议的股东所持有表决权数量占公司表决权数量的比 | 79.5578 | | 例（%） | | ...

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Quantitative Models and Construction Methods 1. Model Name: Liquidity Impact Coefficient Model - **Model Construction Idea**: This model measures the liquidity impact of index adjustments on individual stocks by calculating the ratio of net fund flows to the stock's recent average daily trading volume[12][13] - **Model Construction Process**: The liquidity impact coefficient for a stock is calculated as follows: $$ impact_{i} = \sum_{k=1}^{N} \frac{\Delta weight_{k,i} \times AUM_{k}}{amt\_avg_{i,20}} $$ - \( \Delta weight_{k,i} \): Estimated weight change of stock \( i \) in index \( k \) - \( AUM_{k} \): Total assets under management of passive products tracking index \( k \) as of the end of November - \( amt\_avg_{i,20} \): Average daily trading volume of stock \( i \) over the past 20 trading days as of the end of November[12][13] - **Model Evaluation**: The model provides a quantitative framework to estimate short-term liquidity shocks caused by index adjustments, but it is subject to data discrepancies and assumptions, which may lead to deviations from actual results[13] --- Model Backtesting Results Liquidity Impact Coefficient Model - **Top 5 Stocks with Highest Positive Impact Coefficients**: - Zhangjiagang Bank (002839 CH): 11.55[15] - Jiangzhong Pharmaceutical (600750 CH): 11.44[15] - Tower Group (002233 CH): 11.04[15] - Jichuan Pharmaceutical (600566 CH): 10.14[15] - Zhengbang Technology (002157 CH): 9.99[15] - **Top 5 Stocks with Highest Negative Impact Coefficients**: - Shenzhen Expressway (600548 CH): -24.95[16] - Vanward Electric (002543 CH): -20.90[16] - Aviation Materials (688563 CH): -14.06[16] - Huaxi Biology (688363 CH): -10.81[16] - Ninghu Expressway (600377 CH): -10.54[16] --- Quantitative Factors and Construction Methods 1. Factor Name: Net Fund Flow Factor - **Factor Construction Idea**: This factor estimates the net fund inflow or outflow for stocks due to index adjustments, based on changes in index weights and the total AUM of passive products tracking the index[9][10] - **Factor Construction Process**: - Outflow Amount: Total AUM of linked products multiplied by the stock's actual weight in the index as of the end of November - Inflow Amount: Total AUM of linked products multiplied by the estimated weight of the stock in the index post-adjustment - Weight estimation is based on free-float market capitalization and index-specific weighting rules, such as dividend yield weighting or market capitalization weighting[9][10] - **Factor Evaluation**: The factor provides a transparent and systematic approach to estimate fund flows, but it is sensitive to assumptions about future index weights and AUM changes[9][10] --- Factor Backtesting Results Net Fund Flow Factor - **Top 5 Stocks with Highest Net Fund Inflows**: - Victory Precision (300476 CH): 112.61 billion CNY[10] - Dongshan Precision (002384 CH): 99.32 billion CNY[10] - Guangqi Technology (002625 CH): 77.81 billion CNY[10] - Sugon Information (603019 CH): 65.44 billion CNY[10] - Top Group (601689 CH): 53.07 billion CNY[10] - **Top 5 Stocks with Highest Net Fund Outflows**: - China Mobile (600941 CH): -40.02 billion CNY[11] - CRRC Corporation (601766 CH): -36.40 billion CNY[11] - Aluminum Corporation of China (601600 CH): -34.29 billion CNY[11] - TCL Zhonghuan (002129 CH): -30.07 billion CNY[11] - Huagong Tech (000988 CH): -27.44 billion CNY[11]

Group 1 - The core point of the news is that Shengke Communication's stock price dropped by 5.02% to 126.80 CNY per share, with a trading volume of 413 million CNY and a turnover rate of 1.55%, resulting in a total market capitalization of 51.988 billion CNY [1] - Shengke Communication, established on January 31, 2005, and listed on September 14, 2023, specializes in the research, design, and sales of Ethernet switch chips and related products [1] - The main revenue composition of Shengke Communication includes Ethernet switch chips (72.43%), Ethernet switch chip modules (11.94%), Ethernet switches (10.48%), customized solutions and others (3.18%), and licensing (1.97%) [1] Group 2 - Among the top ten circulating shareholders of Shengke Communication, a fund under Southern Fund holds a position, specifically the Southern CSI 500 ETF (510500), which reduced its holdings by 52,000 shares in the third quarter, now holding 1.8064 million shares, accounting for 0.89% of circulating shares [2] - The estimated floating loss for the Southern CSI 500 ETF today is approximately 12.1032 million CNY [2] - The Southern CSI 500 ETF was established on February 6, 2013, with a latest scale of 140.098 billion CNY, achieving a year-to-date return of 24.71% and a one-year return of 23.98% [2]

Group 1 - The core point of the news is that Shengke Communication's stock price dropped by 5.02% to 126.80 CNY per share, with a trading volume of 413 million CNY and a turnover rate of 1.55%, resulting in a total market capitalization of 51.988 billion CNY [1] - Shengke Communication, established on January 31, 2005, and listed on September 14, 2023, specializes in the research, design, and sales of Ethernet switch chips and related products. The main revenue composition includes Ethernet switch chips (72.43%), Ethernet switch chip modules (11.94%), Ethernet switches (10.48%), customized solutions and others (3.18%), and licensing (1.97%) [1] Group 2 - From the perspective of major circulating shareholders, Huatai Fund's Huatai Mobile Internet Stock A (000697) entered the top ten circulating shareholders of Shengke Communication in the third quarter, holding 1.3785 million shares, accounting for 0.68% of circulating shares, with an estimated floating loss of approximately 9.236 million CNY [2] - Huatai Mobile Internet Stock A (000697) was established on August 26, 2014, with a latest scale of 3.201 billion CNY. Year-to-date returns are 65.67%, ranking 164 out of 4206 in its category; the one-year return is 67%, ranking 112 out of 4008; and since inception, the return is 150.5% [2] Group 3 - The fund manager of Huatai Mobile Internet Stock A (000697) is Shen Ruoyu, who has been in the position for 4 years and 325 days. The total asset scale of the fund is 7.967 billion CNY, with the best fund return during the tenure being 89.45% and the worst being -8.41% [3] Group 4 - From the perspective of the fund's top heavy positions, Huatai Mobile Internet Stock A (000697) holds 1.3785 million shares of Shengke Communication, accounting for 4.71% of the fund's net value, making it the seventh-largest heavy position, with an estimated floating loss of approximately 9.236 million CNY [4]

Core Viewpoint - Multiple indices in the A-share market are undergoing significant adjustments, with announcements made by the Shanghai and Shenzhen Stock Exchanges regarding changes to sample stocks in various indices [2][4]. Group 1: Index Adjustments - On November 28, the Shanghai Stock Exchange announced adjustments to the sample stocks of the Shanghai 50, Shanghai 180, Shanghai 380, and Sci-Tech 50 indices, effective after the market closes on December 12, 2025 [4][14]. - The Shanghai 50 index will replace four stocks, including the addition of SAIC Motor, Northern Rare Earth, Huadian New Energy, and Zhongke Shuguang, while Poly Development, China Mobile, China Aluminum, and CRRC will be removed [5][17]. - The Sci-Tech 50 index will replace two stocks, adding Aojie Technology and Shengke Communication, while Huaxi Biotechnology and Hangcai Co. will be removed [5][6]. Group 2: Shenzhen Stock Exchange Adjustments - The Shenzhen Stock Exchange announced that it will implement regular sample stock adjustments for the Shenzhen Component Index, ChiNext Index, Shenzhen 100, and ChiNext 50 on December 15, 2025 [6][14]. - The Shenzhen Component Index will add 17 stocks, including Tuowei Information, Sifang Jingchuang, and Wolong Nuclear Materials, while Guoyao Yizhi, Haide Shares, and Tibet Mining will be removed [6][7]. Group 3: Additional Index Changes - The ChiNext Index will add eight stocks, including Shuanglin Co., Changshan Pharmaceutical, and Changsheng Bearing [9][11]. - The CSI 300, CSI 500, and other indices will also undergo adjustments, with the CSI 300 replacing 11 stocks, including Huadian New Energy and Shenghong Technology, while removing FAW Liberation and Oppein Home [16][17]. - The CSI 500 index will replace 50 stocks, the CSI 1000 index will replace 100 stocks, and the CSI A50 and A100 indices will replace 4 and 6 stocks respectively [17].

Market Overview - The total trading volume in the market reached 1.14 trillion yuan, slightly lower than the same period the previous day, with over 2800 stocks rising [2] - The communication sector saw significant gains, particularly in optical modules, optical communication, and optical chips, while sectors like defense, banking, and media experienced pullbacks [2] Sector Performance - The top performing indices included: - Optical Modules (CPO) up 6.52% - Optical Chips up 4.80% - Optical Communication up 4.33% - Consumer Electronics Manufacturing up 2.86% [3] - In the Hong Kong market, major indices remained positive, with Meituan leading the Hang Seng Index with a rise of 5.85% [3] Notable Stocks - Long光华芯 (SH:688048) reached a price of 107.15 yuan, up 20.00%, with a trading volume of 27.52 billion yuan [6] - 中际旭创 (300308) hit a new high of 549.88 yuan per share, with a market capitalization exceeding 600 billion yuan [7] - Other notable gainers included 新易盛 (300502) and 剑桥科技 (603083), with increases of 10.44% and 7.54% respectively [7] Company News - Alibaba reported a 34% year-on-year increase in cloud revenue for Q2 of fiscal year 2026, with AI-related product revenue growing for nine consecutive quarters [9] - In the consumer electronics sector, new product launches from Huawei and Alibaba are expected to drive market momentum [12]