上证17-50年国债指数报309.56点

Group 1 - The Shanghai Composite Index opened high and fluctuated, with the Shanghai 17-50 Year Government Bond Index reported at 309.56 points [1] - The Shanghai 17-50 Year Government Bond Index has decreased by 3.74% in the past month, 2.39% in the past three months, and 1.67% year-to-date [2] - The index reflects the market performance of corresponding maturity government bonds listed on the Shanghai Stock Exchange, with a base date of December 31, 2007, and a base point of 100.0 [2] Group 2 - The Shanghai 17-50 Year Government Bond Index consists entirely of unrated bonds, with a 100.00% allocation [3] - The index samples are adjusted monthly, with adjustments taking effect on the first trading day of each month, and data cutoff on the previous trading day [3] - New bonds that meet the criteria will enter the index from the next trading day after their listing, while bonds that are delisted or undergo other events will be handled according to maintenance rules [3]