A股本周小幅反弹，A500ETF易方达（159361）、沪深300ETF易方达（510310）助力布局核心资产

Market Overview - A-shares experienced a volatile rebound this week, with the Shanghai Composite Index briefly surpassing 4000 points [1] - The Shanghai and Shenzhen 300 Index rose by 0.8%, the CSI A500 Index increased by 0.7%, the ChiNext Index grew by 0.6%, the STAR Market 50 Index saw a marginal increase of 0.01%, and the Hang Seng China Enterprises Index climbed by 1.1% [1][3] Sector Performance - Leading sectors included lithium battery electrolyte, phosphorus chemical, photovoltaic inverters, and charging piles, which saw significant gains [1] - Conversely, sectors such as innovative drugs, CRO (Contract Research Organization), software, and diversified finance experienced declines [1] Index Details - The CSI A500 Index consists of 500 securities with large market capitalization and good liquidity, covering 91 out of 93 tertiary industries [4] - The ChiNext Index is composed of 100 stocks from the ChiNext board, with a high proportion in strategic emerging industries, particularly in power equipment, communication, and electronics, which together account for nearly 60% [4] - The STAR Market 50 Index includes 50 stocks from the STAR Market, prominently featuring "hard technology" leaders, with semiconductors making up over 50% and combined with medical devices and photovoltaic equipment, accounting for nearly 75% [4] - The Hang Seng China Enterprises Index includes 50 large-cap, actively traded stocks of mainland Chinese companies listed in Hong Kong, with a broad industry coverage where consumer discretionary, information technology, finance, and energy sectors together represent nearly 85% [4] Performance Metrics - The rolling P/E ratios for the indices are as follows: Shanghai and Shenzhen 300 Index at 14.3 times, CSI A500 Index at 16.8 times, ChiNext Index at 41.4 times, STAR Market 50 Index at 163.9 times, and Hang Seng China Enterprises Index at 10.7 times [3] - The rolling P/E ratio percentiles indicate that the CSI A500 Index is at 66.9%, ChiNext Index at 36.4%, STAR Market 50 Index at 96.6%, and Hang Seng China Enterprises Index at 65.6% [3] Historical Performance - Year-to-date performance shows the Shanghai and Shenzhen 300 Index up by 18.9%, CSI A500 Index up by 22.0%, ChiNext Index up by 49.8%, STAR Market 50 Index up by 43.2%, and Hang Seng China Enterprises Index up by 27.1% [7] - Over the past three years, the Shanghai and Shenzhen 300 Index has increased by 24.8%, while the Hang Seng China Enterprises Index has risen by 65.4% [7]