“入通”股频频巨震 发生了什么？

Group 1 - The recent inclusion of multiple Hong Kong stocks into the Stock Connect program has led to significant price volatility and trading volume increases [1][2][3] - Notable examples include Yaojie Ankang-B, which saw a price surge of 20.13% on the day of inclusion, followed by a dramatic drop of 53.73% shortly after [2][4] - Other stocks like Baize Medical and Brain Dynamics-B also experienced extreme fluctuations, with trading volumes increasing several times compared to before their inclusion [3][4] Group 2 - The volatility is attributed to several factors, including adjustments in index constituents that prompted passive buying from ETFs tracking these indices [4][5] - The inclusion of these stocks has opened up opportunities for mainland investors, resulting in increased buying activity [5][6] - Speculative trading has also played a role, particularly in innovative pharmaceutical stocks that have garnered attention due to their growth potential [6][7] Group 3 - The stocks that have been included in the Stock Connect are often newly listed, leading to lower liquidity and making them more susceptible to price swings [6][7] - The fundamental uncertainties surrounding these companies, such as ongoing losses and lack of revenue, add to the investment risks associated with these stocks [7]