午评：创业板指半日跌0.86%，两市半日成交额超2.2万亿

Group 1 - The three major indices showed mixed performance, with the Shenzhen Component and ChiNext Index opening high but closing lower, with a drop exceeding 1% at one point [1] - The total trading volume in the Shanghai and Shenzhen markets reached 2.24 trillion yuan, an increase of 347.8 billion yuan compared to the previous trading day [1] - Over 3,700 stocks in the market experienced declines, indicating a broad market weakness [1] Group 2 - The non-ferrous metals sector continued its strong performance, with precious metals leading the gains; Sichuan Gold achieved four consecutive trading limits in eight days [1] - The oil and gas sector showed strength, with China National Offshore Oil Corporation (CNOOC) rising over 5% to reach a historical high [1] - The commercial aerospace sector collectively weakened, with China Satellite hitting the daily limit down [1] Group 3 - The semiconductor equipment sector experienced volatility, with Kema Technology dropping over 10% [1] - The limit-up performance rate was 56%, with 45 stocks hitting the limit and 36 stocks touching the limit down [5] - The high opening rate was recorded at 73%, indicating a potential for profit-taking [5]