房屋建设板块9月25日跌0.98%，上海建工领跌，主力资金净流出1.35亿元

Group 1 - The housing construction sector experienced a decline of 0.98% on September 25, with Shanghai Construction leading the drop [1] - The Shanghai Composite Index closed at 3853.3, down 0.01%, while the Shenzhen Component Index closed at 13445.9, up 0.67% [1] - Notable stock performances in the housing construction sector included Ningbo Construction, which rose by 9.96% to a closing price of 6.07, and Shanghai Construction, which fell by 4.92% to 3.09 [1] Group 2 - The net outflow of main funds in the housing construction sector was 135 million yuan, while retail investors saw a net inflow of 137 million yuan [1] - Detailed fund flow data showed that Ningbo Construction had a main fund net inflow of 218 million yuan, while Shanghai Construction had a significant outflow of 310 million yuan [2] - Retail investors contributed positively to several stocks, with notable inflows into Ningbo Construction and Zhejiang Construction, despite overall sector outflows [2]