沪指半日涨0.2%站上4000点，A500ETF易方达（159361）、沪深300ETF易方达（510310）聚焦A股核心资产

Market Overview - The market opened lower but rebounded, with the Shanghai Composite Index rising by 0.2% to surpass the 4000-point mark, and over 3000 stocks in the market saw gains [1] - Key sectors showing strong performance include cloud office, CPO, military equipment, and quantum technology, while coal, precious metals, and wind power equipment sectors experienced declines [1] - The Hong Kong market showed volatility, with solar energy and semiconductor sectors leading gains, while non-ferrous metals, textiles, and steel sectors faced losses [1] Index Performance - As of the midday close, the CSI A500 Index increased by 0.3%, the CSI 300 Index rose by 0.2%, the ChiNext Index surged by 1.4%, and the STAR Market 50 Index climbed by 0.6%. The Hang Seng China Enterprises Index fell by 0.2% [1][3] - The CSI 300 Index, composed of 300 stocks from the Shanghai and Shenzhen markets, has a rolling P/E ratio of 14.7 times [3] - The CSI A500 Index, which includes 500 securities from various industries, has a rolling P/E ratio of 17.2 times [3] Sector Analysis - The technology sector, particularly semiconductors, is prominent, accounting for over 65% of the index, with medical devices, software development, and solar equipment industries collectively making up nearly 80% [6]