Market Performance - The Sci-Tech Innovation 50 Index experienced a narrowing increase of over 1%, having previously risen by 2% [1] - The Shanghai Composite Index closed at 3774.82, up by 8.61 points or 0.23% [1] - The ChiNext Index fell by 4.05 points, resulting in a decrease of 0.16%, closing at 2603.61 [1] - The Shenzhen Component Index increased by 18.72 points, or 0.16%, to close at 11945.46 [1] - The Sci-Tech 50 Index ended at 1161.32, up by 13.17 points or 1.15% [1] - The North Exchange 50 Index decreased by 7.37 points, down 0.46%, closing at 1607.79 [1] - The CSI 300 Index rose by 19.23 points, or 0.45%, to close at 4290.62 [1]

（来源同花顺，以上信息为南都·湾财社AI大数据自动生成） 8月20日，科创50指数延续涨势涨超3%，突破2月27日高点，收盘涨3.23%，报1148.15点，创下自2023 年5月以来新高。 ...

科创50指数午后走高，现涨超2%。成份股中，芯原股份涨超18%，寒武纪-U、晶晨股份等大涨。 ...

Group 1 - The Sci-Tech Innovation 50 Index opened slightly lower on August 19, experienced fluctuations, and closed significantly down at 1112.27 points, with a decline of 1.12% and a trading volume of approximately 549.2 billion yuan [1] - The Sci-Tech Innovation Composite Index also saw a downward adjustment, closing at 1445.75 points with a decrease of 0.8% and a total trading volume of 2285 billion yuan [2] - Among the 587 stocks on the Sci-Tech Board, the average decline was 0.2%, with an average turnover rate of 4.31% and an average fluctuation of 4.71% [2] Group 2 - In terms of individual stock performance, Shenlian Bio and Diaomai both hit the daily limit up, while Wei New Materials experienced the largest drop at 12.05% [3] - Cambrian Technology led in trading volume with 100.7 billion yuan, while ST Pava had the lowest trading volume at 1.885 million yuan [4] - In terms of turnover rate, Yingshi Innovation had the highest at 47.14%, while Tianneng Co. had the lowest at 0.27% [5]

Group 1 - The Sci-Tech Innovation 50 Index experienced an upward trend on August 15, closing at 1101.29 points with a gain of 1.43% and a fluctuation of 2.53% [1] - The total trading volume for the Sci-Tech Innovation Board reached approximately 531.6 billion yuan, with 547 stocks rising [1] - In the sector performance, semiconductor, specialized machinery, and component stocks were notably active, while some chemical and biopharmaceutical stocks saw significant declines [1] Group 2 - On August 15, the average increase for 589 stocks on the Sci-Tech Innovation Board was 2.77%, with an average turnover rate of 3.93% and a total trading volume of 204.4 billion yuan [1] - The stocks with the highest gains included Jiehuate, Zhongyou Technology, and Magu Technology, each rising by 20%, while Mailan De experienced the largest drop at 7.26% [1][2] - In terms of trading volume, Hanwujing led with 10.17 billion yuan, while *ST Guandian had the lowest at 1.309 million yuan [2]

Core Points - The Sci-Tech Innovation 50 Index experienced a high of 3% intraday before closing at 1085.74 points, with a gain of 0.75% and a total trading volume of approximately 656.5 billion yuan [1] - The majority of stocks on the Sci-Tech board declined, with over 510 stocks falling, while high-priced stocks showed mixed performance and low-priced stocks mostly decreased [1] - In the detailed sector performance, certain semiconductor and biopharmaceutical stocks were active, while specialized machinery and software service stocks faced the largest declines [1] - On August 14, the average decline for 589 stocks on the Sci-Tech board was 2.26%, with an average turnover rate of 4.19% and a total trading volume of 218 billion yuan, alongside an average volatility of 5.03% [1] - Notable individual stock performances included Fang Technology and Botao Biology, which rose by 20%, while Dingyang Technology saw a decline of 12.10%, marking the largest drop [1] Trading Volume - Cambrian's trading volume reached 14.04 billion yuan, ranking first, while Delinhai's trading volume was 2.218 million yuan, ranking last [2] Turnover Rate - Longtu Light Mask had the highest turnover rate at 36.92%, while Longteng Optoelectronics had the lowest turnover rate at 0.25% [3]

Core Points - The Sci-Tech Innovation 50 Index opened slightly lower on August 13, 2025, but experienced a significant increase by the end of the trading day, closing at 1077.70 points with a gain of 0.74% and a trading volume of approximately 477 billion [1] - The overall Sci-Tech Innovation Index also saw an increase, closing at 1402.74 points with a rise of 1.49% and a total trading volume of about 1965 billion, marking a substantial increase compared to the previous trading day [1] - The closing point of the Sci-Tech Innovation 50 Index on August 13, 2025, surpassed its closing point of 1070.45 on July 29, 2025, setting a new high for the period [1] - The Sci-Tech Innovation Index reached a closing point higher than 1391.53 on April 7, 2023, achieving its highest closing since August 19, 2022 [1] Stock Performance - On August 13, 2025, nearly 70% of stocks on the Sci-Tech Board rose, with semiconductor and pharmaceutical stocks showing the highest gains [2] - The average increase for the remaining 588 stocks, excluding suspended stocks, was 1.43%, with an average turnover rate of 3.95% and a total trading volume of 1965.12 billion [2] - Notable performers included Zhongchuan Special Gas, Jinchengzi, Zhongyou Technology, and Shouyao Holdings, which all reached approximately 20% limit up [2] - The stock with the largest decline was Pinming Technology, which fell by 6.84% [2] Trading Volume - The stock with the highest trading volume was Cambrian, with 113.55 billion, while *ST Guandian had the lowest trading volume at 1.31171 million [3] Turnover Rate - Jinchengzi had the highest turnover rate at 34.57%, while Longteng Optoelectronics had the lowest at 0.22% [4]

Group 1 - The Sci-Tech Innovation 50 Index opened lower but closed higher on August 11, reporting at 1049.73 points with an increase of 0.59% and a trading range of 1.02%, with a total trading volume of approximately 30.34 billion yuan [1] - On the market, the majority of stocks on the Sci-Tech Innovation Board rose, with 499 stocks increasing. Both high-priced and low-priced stocks saw gains, particularly in the software services, components, and specialized machinery sectors, while some stocks in healthcare, aviation, and semiconductors declined [2] - The average increase for 589 stocks on the Sci-Tech Innovation Board was 2.34%, with an average turnover rate of 3.71%, totaling a trading volume of 163 billion yuan and an average volatility of 4.61% [2] Group 2 - In terms of trading volume, Dongxin Co., Ltd. had the highest trading volume at 4.03 billion yuan, while ST Pava had the lowest at 1.08 million yuan [3] - Regarding turnover rates, Zhongyan Co., Ltd. led with a turnover rate of 34.08%, while Tianneng Co., Ltd. had the lowest turnover rate at 0.28% [4]

Market Performance - The Sci-Tech Innovation 50 Index opened lower on August 8 and experienced significant declines, closing at 1043.54 points with a drop of 1.39% and a trading range of 0.94% [1] - The overall Sci-Tech Composite Index fell by 1.04%, ending at 1346.97 points, with a total trading volume of 156.5 billion [1] Stock Performance - Excluding the suspended stock Jin Chengzi, among the remaining 588 stocks on the Sci-Tech board, the average decline was 0.68% with an average turnover rate of 3.46% [1] - High-priced stocks mostly declined, while low-priced stocks showed mixed performance; healthcare and specialized machinery stocks were active, while software services and semiconductor stocks had the largest declines [1] Individual Stock Highlights - Notable gainers included Sainuo Medical and Kewell, which hit the daily limit up; the largest decliner was Anhui Technology, which fell by 10.27% [2] - Semiconductor company SMIC had the highest trading volume at 5.1 billion, while ST Pava had the lowest at 707.2 million [3] Turnover Rate - The stock with the highest turnover rate was Mcland at 23.66%, while Tianneng Co. had the lowest turnover rate at 0.18% [4]

Market Performance - The Sci-Tech Innovation 50 Index opened flat on August 7, 2023, and experienced a slight decline, closing at 1058.21 points with a drop of 0.15% and a trading range of 1.44% [1] - The overall Sci-Tech Innovation Index fell by 0.36%, ending at 1361.18 points, with a total trading volume of 172.9 billion yuan [1] Stock Performance - Among the 588 stocks on the Sci-Tech board, excluding the suspended stock Jin Chengzi, most stocks declined, with semiconductor and healthcare stocks showing strong performance, while chemical and biopharmaceutical stocks had the largest declines [1] - Notable individual stock performances included Sainuo Medical and Dongxin Co., which hit the daily limit up, while Yuancheng Technology saw a significant drop of 7.86%, marking the largest decline [2] Trading Volume and Turnover Rate - The stock Cambrian Technology had the highest trading volume at 7.69 billion yuan, while ST Pava recorded the lowest at 1.006 million yuan [3] - Yitang Co. led in turnover rate at 31.49%, while Tianneng Co. had the lowest turnover rate at 0.19% [4]