Group 1 - The A-share market's three major indices closed mixed, with the Shanghai Consumer 50 Index rising by 0.43% to 8251.36 points, with a trading volume of 39.565 billion yuan [1] - The Shanghai Consumer 50 Index has decreased by 4.50% over the past month, increased by 1.55% over the past three months, and has fallen by 3.01% year-to-date [1] - The index reflects the overall performance of consumer-related securities listed on the Shanghai Stock Exchange, with a base date of December 31, 2004, and a base point of 1000.0 [1] Group 2 - The top ten weighted stocks in the Shanghai Consumer 50 Index include Kweichow Moutai (10.51%), Yili Group (10.44%), and others, with the total weight of the top ten accounting for a significant portion of the index [1] - The index's holdings are entirely composed of stocks listed on the Shanghai Stock Exchange, with optional consumption accounting for 51.26% and major consumption accounting for 48.74% of the holdings [1] - The index sample is adjusted every six months, with adjustments typically occurring on the next trading day after the second Friday of June and December, with a sample adjustment ratio not exceeding 10% [2]