Market Overview - The A-share market experienced a sudden decline in the afternoon, with the Shanghai Composite Index dropping over 0.2% before recovering slightly, while the Shenzhen Component and ChiNext indices fell [2] - The trading volume in the Shanghai and Shenzhen markets exceeded 2 trillion yuan for the first time this year, marking the seventh consecutive trading day of such volume [2] Sector Performance - Securities stocks collectively faced a pullback, with notable declines including Changcheng Securities down over 6% and Hato Securities down over 5% [2][3] - Several high-priced stocks hit the daily limit down, including Lianhuan Pharmaceutical and Zhongdian Xindong, with others like Shunlian Bio and Sainuo Medical dropping over 8% [4] Banking Sector - In contrast, bank stocks showed strength in the afternoon, with Agricultural Bank of China and Postal Savings Bank reaching new historical highs during the session [2] Hong Kong Market - The Hang Seng Index fell over 0.5%, and the Hang Seng Tech Index dropped more than 1% [6] - AAC Technologies Holdings (02018.HK) saw a rapid decline of over 14% following the release of its interim results, despite reporting a revenue of 13.32 billion yuan, a year-on-year increase of 18.4% [6][8] Company Performance - AAC Technologies reported a gross margin of 20.7%, down 0.8 percentage points year-on-year, attributed to changes in product mix, while net profit attributable to shareholders increased by 63.1% to 876 million yuan due to improved profitability in optical business and rapid growth in precision structural components [8] - CICC noted that the overall valuation level of A-shares remains reasonable, but the rapid increase in trading volume may lead to short-term volatility [8]