定投基金3年还是亏？你可能犯了这2个致命错误！现在该还来得及

Core Insights - The article highlights the significant disparity in investment outcomes among investors who employed a systematic investment strategy in index funds, with over 60% of investors in the CSI 300 index experiencing losses, averaging an 8.7% decline, while a different group achieved a 12% annualized return [1][3]. Group 1: Investment Strategy Errors - Investors commonly made two critical mistakes: selecting the wrong assets and mismanaging investment timing [1][3]. - Many investors fell into the "chasing hot spots" trap, investing in high-volatility sectors like renewable energy and semiconductors, which led to substantial losses [3][4]. - For instance, a renewable energy index fund saw its net value drop from 2.5 yuan in September 2022 to 1.8 yuan in August 2025, resulting in an 11% loss for consistent investors [3][4]. Group 2: Comparison of Investment Outcomes - Broad-based index funds, such as the CSI 300, emerged as the "winners" in systematic investment strategies, yielding a 5.2% annualized return despite market downturns [4][10]. - In contrast, thematic funds averaged a -3.8% return during the same period, underscoring the importance of asset selection [4][10]. Group 3: Valuation Considerations - A common error among investors was neglecting valuation, leading to blind investments without considering price rationality [6][7]. - The CSI 300 index experienced significant valuation fluctuations, with its price-to-earnings ratio ranging from 12 to 15 during the investment period, affecting returns based on timing of investments [6][7]. - An investor who adjusted their investment based on valuation metrics achieved a 14% profit, while another who did not lost 5% [6][10]. Group 4: Recommendations for Improvement - To enhance investment outcomes, investors should prioritize selecting "evergreen" assets and avoid sectors with high cyclicality or rapid technological changes [4][12]. - Implementing a dynamic investment strategy based on valuation metrics can significantly reduce average costs and improve returns [7][10]. - Investors are advised to regularly assess their investment choices and adjust their strategies according to market conditions and asset valuations [12].