沪深300航天国防指数报9532.53点，前十大权重包含航发动力等

Core Points - The Shanghai Composite Index opened lower but rose throughout the day, with the CSI 300 Aerospace and Defense Index reported at 9532.53 points [1] Group 1: Index Performance - The CSI 300 Aerospace and Defense Index has increased by 5.99% over the past month and 4.40% over the last three months, but has decreased by 7.53% year-to-date [2] - The index is designed to reflect the overall performance of different industry securities within the CSI 300 Index, categorized into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries [2] Group 2: Index Composition - The CSI 300 Aerospace and Defense Index is composed entirely of the aviation sector, with a 100% weight [3] - The index samples are adjusted biannually, with adjustments occurring on the next trading day following the second Friday of June and December each year [3] - Weight factors are generally fixed until the next scheduled adjustment, with temporary adjustments made in response to changes in the CSI 300 Index samples or significant events affecting sample companies [3]