截至2025年12月8日 13:17，电子ETF(159997)成交3348.42万元。跟踪的中证电子指数(930652)强势上涨 2.52%，成分股江波龙(301308)上涨14.85%，环旭电子(601231)上涨9.99%，佰维存储(688525)上涨9.23%， 东山精密(002384)，景旺电子(603228)等个股跟涨。 拉长时间看，截至12月5日，电子ETF(159997)近20个交易日合计"吸金"2940.89万元。 截至2025年12月8日 13:17，芯片ETF天弘(159310)成交1041.41万元。跟踪的中证芯片产业指数(H30007)强 势上涨2.76%，成分股江波龙(301308)上涨14.85%，佰维存储(688525)上涨9.23%，盛科通信(688702)上涨 6.34%，寒武纪(688256)，晶合集成(688249)等个股跟涨。 拉长时间看，截至12月5日，芯片ETF天弘(159310)近2周规模增长5732.25万元，近1月份额增长600.00万 份，实现显著增长。 资金流入方面，芯片ETF天弘(159310)近20个交易日合计"吸金"1227.75万元。 【产品亮点 ...

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（%） | | ...

会杜律师事务所 ING&WOD 上海市徐汇区淮海中路999号 上海环贸广场写字楼一期17层 邮编:200031 17/F, One ICC, Shanghai ICC 999 Huai Hai Road (M) Shanghai, 200031 P.R. China T +86 21 2412 6000 86 21 2412 6150 w.kwm.com 北京市金杜律师事务所上海分所 关于苏州盛科通信股份有限公司 2025年第一次临时股东大会 ing | Changchun | Chengdu | Chongqing | Guangzhou | Haikou | Hangzhou | Hong Kong SAR | Jinan | Nanjing | Qingtao | Sanya | Shanghal | Shenzher | Syzhou | berra | Melbourne | Perth | Sydney | Dubai | Tokyo | Singapore | Brussels | Frankfurt | London | Madrıd | Milan | New 1. 经苏州盛科通信股份有限公 ...

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]

截至发稿，罗文杰累计任职时间12年227天，现任基金资产总规模1704.45亿元，任职期间最佳基金回报 145.85%， 任职期间最差基金回报-47.6%。 数据显示，南方基金旗下1只基金位居盛科通信十大流通股东。南方中证500ETF（510500）三季度减持 5.2万股，持有股数180.64万股，占流通股的比例为0.89%。根据测算，今日浮亏损失约1210.32万元。 南方中证500ETF（510500）成立日期2013年2月6日，最新规模1400.98亿。今年以来收益24.71%，同类 排名1914/4206；近一年收益23.98%，同类排名1933/4008；成立以来收益136.62%。 南方中证500ETF（510500）基金经理为罗文杰。 12月1日，盛科通信跌5.02%，截至发稿，报126.80元/股，成交4.13亿元，换手率1.55%，总市值519.88 亿元。 资料显示，苏州盛科通信股份有限公司位于江苏省苏州工业园区江韵路258号，成立日期2005年1月31 日，上市日期2023年9月14日，公司主营业务涉及以太网交换芯片及配套产品的研发、设计和销售。主 营业务收入构成为：以太网交换芯片72. ...

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]

Core Viewpoint - The company primarily focuses on core Ethernet switch chips, with downstream equipment manufacturers designing, developing, and selling final products based on these chips [1] Company Summary - The company's products are currently sold in very small proportions directly to the European Union region [1]