科创板收盘播报：科创综指跌2.63% 逾八成个股下跌

Core Viewpoint - The Sci-Tech Innovation Board experienced significant declines on January 29, with both major indices opening lower and continuing to drop throughout the day, ultimately closing with substantial losses [1]. Group 1: Index Performance - The Sci-Tech 50 Index closed at 1507.64 points, down 3.03%, with a total trading volume of approximately 986 billion [1]. - The Sci-Tech Composite Index closed at 1831.10 points, down 2.63%, with a total trading volume of about 3100 billion, showing a slight decrease compared to the previous trading day [1]. - Approximately 83.33% of the 500 stocks on the Sci-Tech Board declined, indicating a broad market downturn [1]. Group 2: Sector Performance - Within the sectors, a few software service stocks showed relative strength, while stocks in the semiconductor, components, electrical equipment, and specialized machinery sectors generally experienced declines [1]. Group 3: Stock Performance - On an individual stock basis, Sikan Technology saw the highest increase, rising by 15.08%, while *ST Guandian faced the largest drop, falling by 19.94% [2]. - The average decline for the remaining 600 stocks on the Sci-Tech Board, excluding suspended stocks, was 2.22%, with an average turnover rate of 3.74% [1]. Group 4: Trading Volume and Turnover Rate - Lanke Technology had the highest trading volume at 100.44 billion, while Wandesi recorded the lowest at 17.34 million [3]. - Hengyun Chang achieved the highest turnover rate at 43.32%, whereas Longteng Optoelectronics had the lowest at 0.26% [3].