新华财经北京11月21日电（胡晨曦）科创50指数11月21日早间低开，指数全天震荡调整，最终大幅收 跌。至收盘时，科创50指数报1285.83点，跌幅3.19%，指数振幅为2.17%，总成交额约560.3亿元。 11月21日，科创综指全日收跌3.75%，收于1503.36点，总成交额约1726亿元。 个股表现方面，禾信仪器、品高股份涨停，涨幅靠前；普冉股份跌12.96%，跌幅居首。 成交额方面，寒武纪成交额91.8亿元，位居首位；ST观典成交额1414万元，位居末位。 换手率方面，恒坤新材换手率为46.22%，位居首位；龙腾光电换手率为0.28%，位居末位。 （文章来源：新华财经） 从盘面来看，科创板593只个股普遍下跌，高价股、低价股均多数下跌。细分领域来看，除少数电气设 备股、专用机械股以及个别通信设备股、生物制药股等有所上涨，其余细分领域个股均呈普跌态势。 经新华财经统计，11月21日，科创板593只个股平均跌幅3.98%，平均换手率2.77%，合计成交额1726亿 元，平均振幅为5.61%。 ...

Market Performance - The Sci-Tech Innovation 50 Index opened lower on October 30 and continued to adjust, ultimately closing down significantly at 1461.3 points, with a decline of 1.87% and a trading range of 2.22%, totaling a transaction volume of approximately 98.81 billion yuan [1] - The Sci-Tech Comprehensive Index also closed down by 1.38% at 1667.81 points, with a total transaction volume of 261.1 billion yuan [2] Stock Performance - Excluding the suspended stock Lingzhi Software, the remaining 591 stocks on the Sci-Tech Board mostly experienced declines, with an average drop of 1.07% and an average turnover rate of 3.49% [2] - Notable individual stock performances included World, which rose by 19.64%, and Minxin Technology, which fell by 12.62% [3] Trading Activity - The stock with the highest transaction volume was Cambrian, with 16.89 billion yuan, while ST Pava had the lowest at 802.4 thousand yuan [4] - The stock with the highest turnover rate was Xi'an Yichai at 49.36%, while Haohai Biological had the lowest at 0.25% [5]