量化超额突发回撤，与2024年有什么不同？

Core Viewpoint - The A-share market experienced a broad rally last week, with the Shanghai Composite Index reaching the critical level of 3700, while index-enhanced strategy products significantly underperformed the benchmark indices [2] Group 1: Market Performance - The excess returns of various index-enhanced products were negative, with the Shanghai 300 Index Enhanced, CSI 500 Index Enhanced, and CSI 1000 Index Enhanced showing excess returns of -0.49%, -1.09%, and -1.26% respectively [2] - The performance of individual stocks was relatively weak, with less than 50% of stocks in the quant management pool outperforming the benchmark indices during the week [2][3] - The proportion of stocks outperforming the Shanghai 300 Index was below 40% for most of the week, indicating increased difficulty in achieving excess returns [2] Group 2: Strategy and Market Dynamics - The difficulty in obtaining alpha returns is attributed to rapid convergence of basis, where the short positions in futures are weaker than long positions, leading to a decline in neutral strategy products [3] - Market sentiment was high, but the rapid rotation of sector styles made it challenging for stock selection strategies to generate excess returns [2][3] - Quant managers believe that the recent alpha pullback is within a normal range and is not indicative of issues with stock selection strategies [7] Group 3: Future Expectations - Historical data suggests that after periods of alpha decline, there is a high probability of recovery in subsequent market conditions, even if indices experience profit-taking [7][10] - Investors are encouraged to remain optimistic about the potential for recovery in quant management products despite current challenges [7]