指数多日回调后或迎较好布局机会，关注A500ETF易方达（159361）等产品配置价值

Market Performance - The CSI A50 index decreased by 2.2%, the CSI A100 index fell by 2.4%, and the CSI A500 index dropped by 3.3% this week [1][3] - The recent pullback is attributed to previous overvaluation in growth stocks, sudden changes in the external environment, and increased risk aversion [1] Index Composition - The CSI A500 index consists of 500 securities with large market capitalization and good liquidity, covering 91 out of 93 sub-industries [4] - The CSI A100 index includes 100 representative securities with large market capitalization and good liquidity, covering 46 sub-industries [4] - The CSI A50 index is made up of the 50 largest stocks from leading companies across 50 sub-industries, highlighting a large-cap style [4] Valuation Metrics - The rolling price-to-earnings (P/E) ratios are 16.9x for the CSI A500, 16.7x for the CSI A100, and 18.4x for the CSI A50 [3] - The rolling P/E ratio percentiles indicate that the CSI A500 is at the 73.8th percentile, the CSI A100 at the 82.9th percentile, and the CSI A50's percentile data is not yet available [3][5] Historical Performance - Year-to-date performance shows a cumulative increase of 17.0% for both the CSI A500 and A100, while the CSI A50 has increased by 12.5% [7] - Over the past year, the CSI A500 has risen by 17.7%, the CSI A100 by 16.4%, and the CSI A50 by 12.0% [7] - Since their respective base dates, the CSI A500 has increased by 439.3%, the CSI A100 by 335.7%, and the CSI A50 by 76.4% [7]