Group 1 - The core point of the article highlights that institutional investors in the A-share market are consistently quicker than retail investors, leading to a disparity in performance during market rallies [1] - Foreign investors hold significant stakes in certain A-shares, with specific stocks like Siyuan Electric (28.07%), Hongfa Technology (25.446%), and Shuanghuan Transmission (24.81%) showing high foreign ownership [1] - The article emphasizes that the key to understanding foreign investment is not just what stocks they are heavily invested in, but whether their overall attitude has become more aggressive over time [1] Group 2 - The article discusses the misconception that holding stocks during a bull market is sufficient, stressing the importance of understanding institutional trading behaviors to optimize investment strategies [2] - It illustrates that stocks with active institutional inventory data tend to perform better, while those with inactive data may struggle, indicating the influence of institutional participation [4][5] - The concept of "institutional inventory" is introduced as a measure of the level of institutional engagement in a stock, with higher activity suggesting a more favorable outlook from institutions [5][6] Group 3 - The article mentions the use of quantitative data analysis as a powerful tool to identify institutional trading patterns, which can provide insights that are not visible through traditional charting methods [7][9] - An example is given of Jinling Sports, where institutional investment occurred well before public attention, demonstrating the advantage of early information access [9] - The article concludes by emphasizing that in the financial market, information and timing are crucial, and institutions often act on data-driven models long before retail investors [9]