市场本周调整，关注A500ETF易方达（159361）、沪深300ETF易方达（510310）等产品中长期投资价值

Market Overview - The three major A-share indices collectively adjusted this week, with the Shanghai Composite Index down by 1.3%, the CSI 500 Index down by 1.8%, the ChiNext Index down by 3.3%, the STAR Market 50 Index down by 5.8%, and the Hang Seng China Enterprises Index down by 3.1% [1][3]. Sector Performance - In terms of sector performance, photovoltaic equipment, batteries, power grid equipment, traditional Chinese medicine, banks, and home appliances saw the highest gains, while precious metals, semiconductors, storage chips, and AI applications experienced the largest declines [1]. Index Details - The CSI 300 Index consists of 300 large-cap stocks with good liquidity, covering 11 first-level industries [4]. - The CSI 500 Index includes 500 stocks with larger market capitalization and liquidity, covering 89 of the 93 third-level industries [4]. - The ChiNext Index is composed of 100 stocks from the ChiNext board, with a high proportion of strategic emerging industries, particularly in power equipment, communications, and electronics, which together account for nearly 60% [4]. - The STAR Market 50 Index includes 50 large-cap stocks from the STAR Market, with a significant focus on "hard technology," where semiconductors make up over 50% and combined with medical devices and photovoltaic equipment, they account for nearly 75% [4]. - The Hang Seng China Enterprises Index consists of 50 large-cap, actively traded stocks listed in Hong Kong, covering a wide range of industries, with consumer discretionary, information technology, finance, and energy sectors making up nearly 85% [4]. Valuation Metrics - The rolling price-to-earnings (P/E) ratios for the indices are as follows: CSI 300 at 14.1x, CSI 500 at 17.2x, ChiNext at 41.8x, STAR Market 50 at 162.9x, and Hang Seng China Enterprises at 10.6x [3]. - The rolling P/E ratio percentiles indicate that the CSI 300 is at the 62.9th percentile, CSI 500 at 75.0th percentile, ChiNext at 37.8th percentile, STAR Market 50 at 94.9th percentile, and Hang Seng China Enterprises at 64.8th percentile [3]. Historical Performance - Over the past month, the indices have shown the following cumulative performance: CSI 300 down by 2.8%, CSI 500 down by 1.2%, ChiNext down by 2.8%, STAR Market 50 down by 1.5%, and Hang Seng China Enterprises down by 1.2% [7]. - Year-to-date performance shows the CSI 300 up by 0.3%, CSI 500 up by 2.6%, ChiNext up by 1.0%, STAR Market 50 up by 5.8%, and Hang Seng China Enterprises up by 1.3% [7]. - Over the past year, the cumulative performance is as follows: CSI 300 up by 19.3%, CSI 500 up by 25.7%, ChiNext up by 48.8%, STAR Market 50 up by 39.6%, and Hang Seng China Enterprises up by 16.0% [7].