航运港口板块7月31日跌2%，国航远洋领跌，主力资金净流出6.49亿元

Market Overview - The shipping and port sector experienced a decline of 2.0% on July 31, with China National Offshore Oil Corporation (CNOOC) leading the drop [1] - The Shanghai Composite Index closed at 3573.21, down 1.18%, while the Shenzhen Component Index closed at 11009.77, down 1.73% [1] Individual Stock Performance - CNOOC's stock closed at 10.58, down 6.29% with a trading volume of 303,400 shares and a transaction value of 327 million yuan [1] - Other notable declines included: - Haixia Co., Ltd. at 8.13, down 6.12% - Ningbo Ocean at 9.50, down 4.14% - Xiamen Port at 8.30, down 3.60% [1] Capital Flow Analysis - The shipping and port sector saw a net outflow of 649 million yuan from major funds, while retail investors contributed a net inflow of 486 million yuan [1] - The table of capital flow indicates that major funds had a negative net inflow in several companies, including: - Shanghai Port Group with a net inflow of 61.24 million yuan [2] - Tianjin Port with a net inflow of 15.21 million yuan [2] - Conversely, some companies experienced significant net outflows from major funds, such as: - Qin Port Co. with a net outflow of 103.34 million yuan [2]