Group 1 - The overall logic suggests that ST stocks, micro-boards, and the Beijing Stock Exchange share similar cyclical characteristics, relying on policy easing and shell resource value [2] - ST stocks have a shell value that is often considered "dirty," leading to a discount compared to main board small-cap shells, but they can still attract buyers due to their lower prices [2] - The natural 5% price fluctuation limit for ST stocks creates a siphoning effect and is a low-risk choice for aggressive trading funds, making ST stocks a popular trading model [3] Group 2 - The change from a 5% to a 10% price fluctuation limit for ST stocks increases the volatility that needs to be absorbed by the trading volume, while maintaining the existing trading volume limit of 50,000 shares per account [4] - A comparison of the delisting days for ST stocks on different boards shows that the main board has a significantly higher average price increase on delisting days compared to the ChiNext and STAR Market [4] - The average market capitalization of main board ST stocks is 3 billion (excluding Huatuo), while ChiNext ST stocks average 1.9 billion, indicating a premium for main board ST stocks [4] Group 3 - The dilemma of ST stocks remains due to the pressure to maintain shell status, which is linked to the timing of potential turnaround opportunities [5] - The changes in the trading environment for ST stocks are significant, as the perceived risk and difficulty of trading have increased, impacting investment strategies [5]