大盘七连阳，为何赚了指数不赚钱？

Group 1 - The A-share market has experienced seven consecutive days of gains, but many stocks have not risen, indicating market differentiation despite a trading volume of 1.8 trillion [1] - The core reason for market differentiation is attributed to quantitative trading, which exacerbates the situation, and the actual contribution of quantitative trading to the 1.8 trillion volume is uncertain [1] - A shift in market style from trend and large-cap stocks to mid and small-cap stocks is necessary to alleviate the current differentiation [1] Group 2 - The commercial aerospace sector has emerged as a strong performer, providing a clear direction for market bullishness, while other sectors like robotics face challenges against this strong competitor [2] - The commercial aerospace sector is viewed as a mainstream hotspot, and rolling bullish strategies are recommended in the short term if divergences arise [2] - Large-cap stocks have shown a decline in activity recently, but there may be opportunities for a return if they stabilize [2]