市场本周调整，关注A500ETF易方达和沪深300ETF易方达等产品投资机会

Market Overview - The market experienced fluctuations this week, with coal, insurance, banking, port shipping, and liquor sectors showing the highest gains, while sectors like photolithography machines, consumer electronics, wind power equipment, CPO, and advanced packaging faced significant declines [1] - The Hong Kong stock market weakened, with the innovative drug sector experiencing substantial volatility and technology stocks collectively declining [1] Index Performance - The Shanghai Shenzhen 300 Index fell by 2.2%, the CSI A500 Index decreased by 3.3%, the ChiNext Index dropped by 5.7%, the STAR Market 50 Index declined by 6.2%, and the Hang Seng China Enterprises Index decreased by 3.7% [1][3] - The rolling price-to-earnings (P/E) ratios for the indices are as follows: Shanghai Shenzhen 300 at 14.4x, CSI A500 at 16.9x, ChiNext at 42.8x, STAR Market 50 at 181.3x, and Hang Seng China at 10.7x [3] Historical Performance - Over the past month, the Shanghai Shenzhen 300 Index increased by 0.4%, while the ChiNext Index decreased by 5.2% [7] - Year-to-date, the Shanghai Shenzhen 300 Index has risen by 14.7%, and the ChiNext Index has increased by 37.1% [7] - The Hang Seng China Enterprises Index has shown a year-to-date increase of 23.6% [7] Sector Composition - The CSI A500 Index covers 500 securities from various industries, representing 91 out of 93 three-level industries, indicating a broad market representation [4] - The ChiNext Index consists of 100 stocks with high market capitalization and liquidity, with strategic emerging industries accounting for nearly 60% of its composition [4] - The STAR Market 50 Index is heavily weighted towards "hard technology" leaders, with semiconductors making up over 50% of its composition [4]