航海装备板块10月31日跌0.48%，江龙船艇领跌，主力资金净流出3.86亿元

Market Overview - The marine equipment sector experienced a decline of 0.48% on October 31, with Jianglong Shipbuilding leading the losses [1] - The Shanghai Composite Index closed at 3954.79, down 0.81%, while the Shenzhen Component Index closed at 13378.21, down 1.14% [1] Stock Performance - Notable stock performances in the marine equipment sector included: - Guorui Technology (300600) rose by 2.55% to close at 15.70, with a trading volume of 119,900 shares and a turnover of 187 million yuan - Hailanxin (300065) increased by 0.81% to 19.93, with a trading volume of 386,500 shares and a turnover of 768 million yuan - Jianglong Shipbuilding (300589) fell by 4.27% to 14.14, with a trading volume of 352,700 shares and a turnover of 506 million yuan [1] Capital Flow - The marine equipment sector saw a net outflow of 386 million yuan from institutional investors, while retail investors contributed a net inflow of 248 million yuan [1] - Detailed capital flow for selected stocks showed: - Jianglong Shipbuilding had a net outflow of 68.22 million yuan from institutional investors, but a net inflow of 76.70 million yuan from retail investors [2] - China Shipbuilding (600150) experienced a significant net outflow of 264 million yuan from institutional investors [2]