Group 1 - The central bank announced a significant liquidity support measure by conducting a 1.4 trillion yuan reverse repurchase operation on July 15, with 800 billion yuan for 3-month and 600 billion yuan for 6-month terms, which is seen as a strong positive signal for the market [1] - The A-share market continued to strengthen, primarily driven by bank stocks, while technology growth stocks showed weakness, indicating a shift in capital towards large-cap stocks [1] - The market saw a notable increase in active stocks, with 3,000 stocks rising and over 2,000 declining, suggesting improved performance of thematic stocks compared to the previous week [3] Group 2 - The Shanghai Composite Index reached a high of 3,532 points and a low of 3,513 points, indicating a narrow trading range of less than 19 points, reflecting a divergence among the three major indices [5] - The closing data showed the Shanghai Composite Index up by 0.27% while the Shenzhen Component Index fell by 0.11%, indicating a mixed performance in the market [7] - The current market dynamics suggest that while large-cap stocks are performing well, small-cap stocks remain relatively weak, and there is a concern about the sustainability of the upward trend driven mainly by banks and large financial institutions [7]