房屋建设板块1月19日跌1.15%，高新发展领跌，主力资金净流出2.72亿元

Group 1 - The housing construction sector experienced a decline of 1.15% compared to the previous trading day, with Gaoxin Development leading the drop [1] - On the same day, the Shanghai Composite Index closed at 4114.0, up by 0.29%, while the Shenzhen Component Index closed at 14294.05, up by 0.09% [1] Group 2 - The housing construction sector saw a net outflow of 272 million yuan from main funds, while retail investors contributed a net inflow of 11 million yuan [2] - The table provided indicates various stocks within the housing construction sector, showing significant net outflows for companies like Longyuan Construction (14.06 million yuan) and Shanghai Construction (61.22 million yuan) [2] - Notably, China State Construction experienced a net outflow of 166 million yuan from main funds, despite a net inflow of 1.69 million yuan from speculative funds [2]