中证800地产指数下跌0.07%，前十大权重包含海南机场等

Group 1 - The core viewpoint of the news is that the China Securities 800 Real Estate Index has shown a slight decline on a specific trading day, while it has experienced an overall increase over the past month and three months [1] - The China Securities 800 Real Estate Index has increased by 3.40% in the last month, 7.47% in the last three months, and 0.35% year-to-date [1] - The top ten weighted companies in the China Securities 800 Real Estate Index include China Merchants Shekou (13.86%), Poly Developments (13.36%), and Vanke A (13.3%) [1] Group 2 - The market segments of the China Securities 800 Real Estate Index show that the Shanghai Stock Exchange accounts for 67.59% and the Shenzhen Stock Exchange accounts for 32.41% [2] - The sample of the China Securities 800 Real Estate Index is entirely composed of the real estate industry, with a 100.00% weight in this sector [3] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [3]