主动权益如何通过组合优化，战胜宽基指数？

Core Viewpoint - The article emphasizes the importance of setting a reasonable and scientific performance benchmark for public funds, particularly in the context of the growing scale of the CSI 300 index. It discusses how active equity funds can consistently outperform benchmarks by managing style and industry deviations effectively [1][17]. Group 1: Benchmark and Performance - The CSI 300 index serves as the primary benchmark, composed of various style factors. Active fund managers primarily focus on quality, prosperity, and momentum factors, while dividend and low valuation factors can lead to underperformance when they are strong [1][17]. - The difficulty of beating benchmarks is a common challenge for asset management institutions globally, with only about 50% of active equity funds in A-shares outperforming their benchmarks over the past 20 years [17][18]. Group 2: Style and Industry Deviation - Controlling style deviation is more critical than controlling industry deviation for fund managers aiming to outperform benchmarks. Excessive deviation can significantly impact performance negatively [3][22]. - Successful fund managers tend to exhibit smaller deviations in style and industry, maintaining a balanced approach regardless of market conditions [5][24]. Group 3: Stock Selection and Market Timing - Stock selection is more impactful on performance than industry selection, with a focus on identifying high-potential stocks rather than frequently rotating industries [26]. - Market timing is debated among fund managers, with evidence suggesting that while many lack timing ability, strategic timing can enhance returns during volatile periods [12][34]. Group 4: Risk Management and Strategy - A U-shaped risk convexity strategy is proposed to enhance the risk-return profile of portfolios, emphasizing the importance of managing volatility in equity assets [27][28]. - The relationship between volatility and returns is highlighted, with low volatility stocks often yielding better returns in the A-share market, contrary to the general belief that higher volatility equates to higher returns [9][29]. Group 5: Future Considerations - The article suggests that in the absence of clear industry trends, public funds must balance their strategies to achieve stable excess returns by leveraging combination management approaches [20][21].