科创板收盘播报：科创50指数冲高回落涨0.75% 超510只个股下跌

Core Points - The Sci-Tech Innovation 50 Index experienced a high of 3% intraday before closing at 1085.74 points, with a gain of 0.75% and a total trading volume of approximately 656.5 billion yuan [1] - The majority of stocks on the Sci-Tech board declined, with over 510 stocks falling, while high-priced stocks showed mixed performance and low-priced stocks mostly decreased [1] - In the detailed sector performance, certain semiconductor and biopharmaceutical stocks were active, while specialized machinery and software service stocks faced the largest declines [1] - On August 14, the average decline for 589 stocks on the Sci-Tech board was 2.26%, with an average turnover rate of 4.19% and a total trading volume of 218 billion yuan, alongside an average volatility of 5.03% [1] - Notable individual stock performances included Fang Technology and Botao Biology, which rose by 20%, while Dingyang Technology saw a decline of 12.10%, marking the largest drop [1] Trading Volume - Cambrian's trading volume reached 14.04 billion yuan, ranking first, while Delinhai's trading volume was 2.218 million yuan, ranking last [2] Turnover Rate - Longtu Light Mask had the highest turnover rate at 36.92%, while Longteng Optoelectronics had the lowest turnover rate at 0.25% [3]