量化选股微盘股暴露大吗？风险大吗？

Core Viewpoint - The financing balance of the two markets has surpassed 2.3 trillion yuan, marking a historical high since 2015, indicating a significant increase in liquidity and investor risk appetite during the current bull market [2][3]. Group 1: Exposure of Micro-Cap Stocks - There is a noticeable differentiation in the exposure of quantitative long products to micro-cap stocks this year, with micro-cap indices significantly outperforming mid and large-cap stocks [4][5]. - The weighted discount rate of IC/IM stock index futures has remained high, suggesting an increased exposure of quantitative managers to micro-cap stocks [7]. - In the first quarter, the proportion of holdings in stocks below the 2000 index was about 20-40%, which may rise to over 50% in the third quarter [8]. Group 2: Reasons and Risks of Exposure to Micro-Cap Stocks - Historically, small-cap stocks have shown higher average annualized beta returns compared to large-cap stocks, attracting speculative interest from retail investors [9]. - The lower coverage of small micro-cap stocks by large institutional investors leads to higher mispricing probabilities, providing opportunities for quantitative models to identify undervalued targets [9]. - The current market liquidity favors micro-cap stocks, pushing their prices higher, especially during periods of weak economic data [9]. Group 3: Investor Strategies to Mitigate Risks - As long as micro-cap stocks maintain a strong market position, the likelihood of high exposure in quantitative long products remains significant [10]. - New investors may have concerns, but the current bull market is relatively rare, and any adjustments are expected to manifest as fluctuations rather than sharp declines [10]. - Quantitative long strategies differ from simple micro-cap strategies, focusing on identifying strong stocks and increasing exposure based on market conditions [10].