跟踪ETF规模超1.2万亿，如何玩转沪深300指数

Core Insights - The article discusses the growing popularity of the CSI 300 Index as a tool for investors to capture market opportunities, with the total scale of ETFs tracking this index reaching 1.25 trillion yuan as of October 24, 2025 [2]. Group 1: Investment Strategies - The CSI 300 Index, comprising high-quality blue-chip stocks, is suitable for low-positioning strategies based on valuation indicators such as price-to-earnings (PE) and dividend yield [3]. - A phased investment approach is recommended, where investors can gradually buy into index products when the CSI 300 Index is at historically low valuation levels, thus mitigating timing risks [6]. - The article highlights the size and style rotation strategy, indicating that large-cap and small-cap stocks in the A-share market exhibit significant performance divergence influenced by economic cycles [7][10]. Group 2: Portfolio Strategies - The "Dumbbell Strategy" is introduced, which focuses on allocating assets with low correlation to balance risk and return, emphasizing a concentrated investment in both ends of the risk-return spectrum [15]. - For conservative investors, the CSI 300 Index can serve as an offensive asset, while for aggressive investors, it can be paired with high-growth sectors to create a more offensive portfolio [19]. - The "Core-Satellite Strategy" is discussed, where the core portion of the portfolio is invested in the CSI 300 Index for stable returns, while the satellite portion is allocated to other assets for tactical gains [20][23].