科创板收盘播报：科创综指跌1.96% 软件服务股跌幅靠前

Market Performance - The two major indices of the Sci-Tech Innovation Board opened significantly lower on December 15, with both indices experiencing multiple failed attempts to rally before shifting to a downward trend, closing with substantial declines [1] - The Sci-Tech Innovation Composite Index closed at 1580.32 points, down 1.96%, with a total trading volume of approximately 190.8 billion yuan, showing a significant decrease compared to the previous trading day [1] - The Sci-Tech 50 Index closed at 1318.91 points, down 2.22%, with constituent stocks' total trading volume around 58.3 billion yuan, also reflecting a substantial decrease from the previous day [1] Stock Performance - On the day, the majority of stocks on the Sci-Tech Innovation Board declined, with only 172 stocks rising, accounting for approximately 28.91% of the total [1] - In specific sectors, metal stocks mostly increased, while environmental protection and healthcare stocks showed mixed performance; software services, semiconductor, and biomedicine stocks predominantly fell [1] - The average decline for the 595 stocks on the Sci-Tech Innovation Board was 1.11%, with an average turnover rate of 2.71% and a total trading volume of 190.783 billion yuan, alongside an average volatility of 4.06% [1] Individual Stock Highlights - Aisen Co., Ltd. reached a 20% limit up, leading in gains for the day [1] - Pinming Technology experienced the largest decline, falling by 18.67% [1] Trading Activity - In terms of trading volume, Cambrian Technology topped the list with a trading volume of 8.668 billion yuan, while ST Pava had the lowest at 461.43 million yuan [2] - Regarding turnover rates, Hengkang New Materials led with a turnover rate of 32.69%, while Anxu Bio had the lowest at 0.13% [2]