科创板收盘播报：科创综指跌2.02% 环境保护股跌幅靠前

Group 1 - The two major indices of the Sci-Tech Innovation Board opened slightly lower on December 16, showing a downward trend throughout the morning session, with significant declines by midday and a slight rebound in the afternoon before returning to a consolidating state by the end of the trading day [1] - The Sci-Tech Innovation Composite Index closed at 1548.32 points, down 2.02%, with a total trading volume of approximately 163.9 billion yuan, significantly lower than the previous trading day [1] - The Sci-Tech 50 Index closed at 1293.38 points, down 1.94%, with constituent stocks' total trading volume around 47.15 billion yuan, also showing a significant decrease compared to the previous trading day [1] Group 2 - Among the stocks on the Sci-Tech Innovation Board, only 68 stocks rose, accounting for approximately 11.41% of the total, while the majority experienced declines [1] - In the environmental protection sector, stocks such as Zhuojin Co., Tongyuan Environment, and Fujie Technology saw declines of 9.14%, 8.95%, and 8.81% respectively, leading to significant losses in this sector [1] - Anrui Microelectronics was listed on the Sci-Tech Innovation Board on December 16, with a main business focus on the research, design, and sales of RF front-end chips and other analog chips, closing at a price 160.11% higher than its issue price, with a trading volume of approximately 2.061 billion yuan and a turnover rate of 75.28% [1] Group 3 - Excluding the first trading day of Anrui Microelectronics, the average decline of the remaining 595 stocks on the Sci-Tech Innovation Board was 2.03%, with an average turnover rate of 2.45% and a total trading volume of 161.839 billion yuan [2] - The average volatility of the stocks was 4.24% [2] - Among individual stock performances, Ruihua Tai saw an increase of 13.63%, while Pinming Technology experienced a decline of 11.62%, marking the highest gain and loss respectively [2] Group 4 - In terms of trading volume, Hanwujing ranked first with a trading volume of 9.503 billion yuan, while ST Pava ranked last with a trading volume of 648.91 thousand yuan [3] - The turnover rate for Baiaosaitu was the highest at 25.68%, while Weigao Orthopedics had the lowest turnover rate at 0.18% [3]