Market Overview - Major A-share indices collectively adjusted, with the Shanghai Composite Index and Shenzhen Component Index both falling over 1.4% [1] - As of the close, the Shanghai Composite Index dropped 1.76% to 3800.35 points, while the Shenzhen Component Index fell 1.43% to 12295.07 points [2] - The ChiNext Index decreased by 0.69%, and the North China 50 Index saw a decline of 2.6% [1][2] - Total trading volume reached 3.2 trillion yuan, an increase of 488 billion yuan compared to the previous trading day [1] Sector Performance - The aerosol detection sector experienced significant declines, with Jieqiang Equipment falling by 9% [3] - The titanium dioxide sector also weakened, with Zhenhua Co., Ltd. dropping nearly 7% [3] - Micro-cap stocks collectively plummeted, with over 90 stocks declining by more than 5% [3] - The textile and apparel sector showed weak performance, with multiple stocks, including Zhenai Meijia, hitting the daily limit down [3] - The cement and building materials sector weakened, with Sichuan Shuangma falling over 6% [3] Notable Trends - The CPO concept rose against the trend, with Cambridge Technology hitting the daily limit up [3] - The AI chip sector strengthened, with Ruixin Micro and Yanshan Technology both reaching the daily limit up [3] - A few sectors, including F5G concept, minor metals, and optical communication modules, recorded gains [3]

Market Performance - A-shares opened higher on August 14, with the Shanghai Composite Index reaching a nearly four-year high of 3700 points during the session [1] - By the end of the trading day, the Shanghai Composite Index, Shenzhen Component Index, and ChiNext Index closed down by 0.46%, 0.87%, and 1.08%, respectively, at 3666.44 points, 11451.43 points, and 2469.66 points [1] Sector Performance - Insurance, digital sentinels, and electronic ID sectors showed the highest gains, while aerosol testing, housing inspection, and PCB sectors experienced the largest declines [1] Stock Performance - Out of the A-shares, 735 stocks rose, with 52 hitting the daily limit up, while 4648 stocks fell, including 15 hitting the daily limit down [1] Trading Volume - The trading volume in the Shanghai market was approximately 949.46 billion yuan, while the Shenzhen market saw about 1.33 trillion yuan, leading to a total trading volume of around 2.28 trillion yuan, marking the third occurrence this year of surpassing 2 trillion yuan [1]