基础建设板块10月17日跌1.3%，浦东建设领跌，主力资金净流出7.46亿元

Market Overview - On October 17, the infrastructure sector declined by 1.3%, with Pudong Construction leading the drop [1] - The Shanghai Composite Index closed at 3839.76, down 1.95%, while the Shenzhen Component Index closed at 12688.94, down 3.04% [1] Stock Performance - Notable gainers in the infrastructure sector included: - Garden Shares (605303) with a closing price of 18.87, up 10.03% [1] - Pubang Shares (002663) at 2.12, up 3.41% [1] - Xinjiang Communications Construction (002941) at 19.80, up 2.48% [1] - Major decliners included: - Pudong Construction (600284) at 8.12, down 7.83% [2] - China Nuclear Engineering (601611) at 10.77, down 5.86% [2] - Chengbang Shares (603316) at 11.81, down 5.67% [2] Capital Flow - The infrastructure sector experienced a net outflow of 746 million yuan from institutional investors, while retail investors saw a net inflow of 624 million yuan [2][3] - The overall capital flow for key stocks showed: - Garden Shares had a net inflow of 74.24 million yuan from institutional investors [3] - Sichuan Road and Bridge (600039) had a net inflow of 15.45 million yuan from institutional investors [3] - Notable outflows were observed in National Sheng Technology (603778) with a net outflow of 63.54 million yuan from retail investors [3]