房屋建设板块2月2日跌2.27%，上海建工领跌，主力资金净流出4.74亿元

Market Overview - The housing construction sector experienced a decline of 2.27% on February 2, with Shanghai Construction leading the drop [1] - The Shanghai Composite Index closed at 4015.75, down 2.48%, while the Shenzhen Component Index closed at 13824.35, down 2.69% [1] Stock Performance - Notable declines in individual stocks include: - Shanghai Construction: down 5.03% to 2.83 [1] - Zhejiang Construction Investment: down 3.13% to 8.36 [1] - China State Construction: down 1.98% to 4.94 [1] - The trading volume and turnover for Shanghai Construction reached 421.40 million shares and 12.21 billion yuan, respectively [1] Capital Flow - The housing construction sector saw a net outflow of 474 million yuan from institutional investors, while retail investors contributed a net inflow of 227 million yuan [1] - Specific stock capital flows indicate: - Longyuan Construction: net inflow of 12.39 million yuan from institutional investors [2] - Shanghai Construction: significant net outflow of 1.68 billion yuan from institutional investors [2] - China State Construction: net outflow of 2.97 billion yuan from institutional investors [2]