沪深300航天国防指数报9125.20点，前十大权重包含航发动力等

Group 1 - The A-share market's three major indices closed mixed, with the CSI 300 Aerospace and Defense Index at 9125.20 points [1] - The CSI 300 Aerospace and Defense Index has decreased by 5.87% over the past month, 4.26% over the past three months, and 11.48% year-to-date [2] - The CSI 300 Index is categorized into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries, providing a comprehensive analysis tool for investors [2] Group 2 - The CSI 300 Aerospace and Defense Index is composed entirely of the aviation sector, with a sample adjustment occurring biannually [3] - The index's sample is adjusted on the second Friday of June and December, with weight factors fixed until the next scheduled adjustment [3] - In cases of special events affecting a sample company's industry classification, the CSI 300 industry index samples will be adjusted accordingly [3]