科创板收盘播报：科创50指数涨3.53% 半导体股表现分化

Core Points - The Sci-Tech Innovation 50 Index opened slightly lower on January 21 but experienced an upward trend throughout the day, closing significantly higher at 1535.39 points, with a gain of 3.53% and a trading range of 4.27% [1] - The overall Sci-Tech Innovation Index rose by 2.32% to close at 1862.69 points, with a total trading volume of approximately 310.8 billion yuan [1] - Among the 600 stocks in the Sci-Tech Innovation Board, there were more gainers than losers, with high-priced stocks showing mixed performance while most low-priced stocks increased [1] Sector Performance - Chemical raw materials and healthcare stocks showed strong performance, while electrical equipment and software service stocks experienced the largest declines [1] - Semiconductor stocks displayed mixed results [1] Individual Stock Performance - Longxin Zhongke reached the daily limit, showing the highest increase, while Kain Technology fell by 13.23%, marking the largest decline [2] - Haiguang Information led in trading volume with 17.75 billion yuan, while ST Pava had the lowest trading volume at 651.5 million yuan [3] - In terms of turnover rate, Zhongwei Semiconductor had the highest turnover rate at 33.04%, while Longteng Optoelectronics had the lowest at 0.28% [4]