Group 1 - The Sci-Tech Innovation 50 Index opened high and closed at 1259.10 points, with an increase of 1.09% and a fluctuation of 2.14%, with a total trading volume of approximately 711.4 billion yuan [1] - Most stocks on the Sci-Tech Board rose, with 251 stocks increasing in value. High-priced stocks generally performed well, while low-priced stocks showed a downward trend [1] - In specific sectors, semiconductor and component stocks were active, while electrical equipment and specialized machinery stocks experienced the largest declines [1] Group 2 - On September 10, excluding one suspended stock, the remaining 588 stocks on the Sci-Tech Board had an average increase of 0%, an average turnover rate of 2.81%, a total trading volume of 197.6 billion yuan, and an average fluctuation of 3.78% [1] - In individual stock performance, Jiayuan Technology surged by 20%, leading the component stocks, while Daqing Energy fell by 8.05%, marking the largest decline [2] - In terms of trading volume, Cambrian Technology topped the list with a trading volume of 176.6 billion yuan, while Shuangyuan Technology had the lowest trading volume at 896.5 million yuan [3] - Regarding turnover rates, Aggregated Materials had the highest turnover rate at 19.96%, while Longteng Optoelectronics had the lowest at 0.18% [4]

Group 1 - The ChiNext Index and the STAR 50 Index both rose over 2% in the afternoon session on September 10, indicating strong market performance [1] - The Shanghai Composite Index increased by 0.29%, while the Shenzhen Component Index rose by 0.72%, reflecting positive investor sentiment [1] - The sectors leading the market included computing hardware, communication services, and film and television box office, with over 2,500 stocks in the market experiencing gains [1]

Group 1 - The Sci-Tech 50 Index opened slightly higher on September 5 and experienced significant gains throughout the day, closing at 1268.55 points with an increase of 3.39% and a trading range of 4.43%, with a total trading volume of approximately 74.74 billion [1] - The Sci-Tech Composite Index rose by 3.92% to close at 1544.30 points, with a total trading volume of 237.8 billion [1] - Excluding suspended stocks, the remaining 586 stocks on the Sci-Tech Board showed a general upward trend, with an average increase of 3.68% and an average turnover rate of 3.67%, totaling a trading volume of 237.8 billion and an average fluctuation of 5.54% [1] Group 2 - Individual stock performance saw stocks like Yuchen Intelligent, Liyuanheng, and Tianyue Advanced hitting the daily limit, while Qianyan Biology experienced a significant drop of 16.34%, the largest decline [2] - In terms of trading volume, Hanwujing led with a trading volume of 24.71 billion, while *ST Guandian (rights protection) had the lowest at 1.08 million [3] - The highest turnover rate was recorded by Xinyu Ren at 35.23%, while Longteng Optoelectronics had the lowest turnover rate at 0.38% [3]

中经记者 孙汝祥 夏欣 北京报道 （编辑：夏欣 审核：何莎莎 校对：颜京宁） 根据指数规则，上交所与中证指数有限公司决定调整科创50等指数样本，于9月12日收市后生效。 业内专家表示，9月12日季度调样生效后，科创50指数占总市值比重将提升0.3%，代表性进一步增强。 针对近期寒武纪股价异动，专家表示，寒武纪在2022—2024年陆续纳入相关主要指数，彼时寒武纪股价 尚低，初步估算，寒武纪在指数样本中权重的自然增长超八成来自于纳入后股价的上涨，不存在故意推 高市值以进入指数样本的情形。 近期，寒武纪股价波动较大，据公开数据统计，相关指数ETF产品份额并未明显变化。专家认为，据此 判断近期股价大幅波动并非相关指数ETF产品由于跟踪指数所引起的。 此外，专家指出，今年中报数据显示，寒武纪等科创板公司业绩亮眼，市场对科创企业未来业绩有较好 预期，也必将吸引更多的资金流入科创板。 ...

Core Viewpoint - The significant drop in the stock price of Cambrian (688256) is primarily attributed to the upcoming quarterly adjustment of the Sci-Tech Innovation 50 Index, which may lead to a reduction in the company's weight in the index [1] Group 1: Stock Performance - On September 4, Cambrian's stock closed at 1202, down 203.00 yuan, representing a decline of 14.45%, with a market value loss exceeding 800 billion yuan [1] - The recent decline in Cambrian's stock price is linked to its weight exceeding the 10% limit for individual stocks in the Sci-Tech Innovation 50 Index [1] Group 2: Index Adjustment - The Shanghai Stock Exchange and China Securities Index announced that the next index adjustment will take place after the market closes on September 12 [1] - As of September 3, Cambrian's weight in the Sci-Tech Innovation 50 Index was 14.88%, necessitating a reduction to comply with the index's regulations [1] - Fund managers indicated that if Cambrian's weight is reduced to 10%, related ETF products will adjust their holdings, impacting Cambrian's stock price [1] Group 3: Regulatory Context - Recent communications from brokerage firms highlighted that the Sci-Tech Innovation 50 Index undergoes quarterly adjustments, with individual stock weights not exceeding 10% and the top five holdings not exceeding 40% [1] - Both Cambrian and SMIC (Semiconductor Manufacturing International Corporation) are required to complete their adjustments by September 12, with Cambrian's weight exceeding 15% and SMIC's at 10.21% [1]

6月~8月，科创50指数实现月线3连阳，累计上涨37.28%，由于涨幅过快且中间没有像样的整固调整， 会出现较多的浮盈盘，有一定落袋为安需求。近期中芯国际A股停牌期间，港股中芯跌幅相对较大，形 成短期利空预期。 从二级市场走势来看，科创50指数自基日以来经过两轮周线级别的破位下跌后，已经突破前一个平台展 开了新的趋势，向上解放之前的套牢盘一定会有压力出现，波动也在所难免，但是中长期要重视趋势改 变的力量。 相关ETF：科创50ETF 588000 （文章来源：每日经济新闻） 从中期催化来看，国产替代逻辑不变，只要逻辑有效即可逢低关注科创50指数。 ...

Market Performance - The Sci-Tech Innovation 50 Index opened lower on September 4 and experienced significant fluctuations, ultimately closing down at 1226.98 points, with a decline of 6.09% and a trading range of 7.13% [1] - The overall Sci-Tech Innovation Index also fell by 5.19%, closing at 1486.04 points, with a total trading volume of approximately 275.6 billion [1] - Excluding suspended stocks, the remaining 586 stocks on the Sci-Tech board mostly declined, with an average drop of 3.12% and an average turnover rate of 4.13% [1] Individual Stock Performance - Hangke Technology saw a notable increase of 9.89%, ranking among the top gainers [2] - Dongxin Technology experienced a significant drop of 17.04%, marking the largest decline [2] Trading Volume and Turnover Rate - Cambrian's trading volume reached 28.01 billion, leading the market, while ST Pava had a trading volume of only 1.174 million, the lowest [3] - Yingshi Innovation had the highest turnover rate at 20.14%, while Longteng Optoelectronics recorded the lowest turnover rate at 0.35% [4]

Market Performance - The ChiNext Index has seen a decline of 3%, while the Shanghai Composite Index dropped by 1.64% and the Shenzhen Component Index fell by 2.17%. The STAR 50 Index experienced a decline of over 5% [1] - Over 2,200 stocks in the two markets have recorded declines [1] Early Market Movements - The ChiNext Index quickly fell by over 1% after previously rising nearly 2%. The Shanghai Composite Index decreased by 0.83% and the Shenzhen Component Index fell by 0.66% [2] - Significant declines were noted in sectors such as computing hardware and CPO concepts [2]

Group 1 - The overall decline in the technology sector is highlighted, with the ChiNext 50 Index dropping over 6% [1] - Specific companies such as Cambrian Biologics experienced a significant drop of over 14% [1] - Other companies like Haiguang Information and Tuojing Technology also faced declines, with drops of over 11% and 8% respectively [1]

Group 1 - The core viewpoint of the article indicates that the ChiNext 50 Index has experienced a significant decline, with a drop of 6% on September 4th [2] - Among the constituent stocks, Cambricon Technologies has seen a substantial decrease, falling over 14%, leading the decline in the index [2]