房屋建设板块12月11日跌0.3%，重庆建工领跌，主力资金净流出2.36亿元

Group 1 - The housing construction sector experienced a decline of 0.3% compared to the previous trading day, with Chongqing Construction leading the drop [1] - The Shanghai Composite Index closed at 3873.32, down 0.7%, while the Shenzhen Component Index closed at 13147.39, down 1.27% [1] - A detailed table of individual stock performance within the housing construction sector is provided [1] Group 2 - The housing construction sector saw a net outflow of 236 million yuan from main funds, while retail investors contributed a net inflow of 184 million yuan [2] - Speculative funds recorded a net inflow of 51.93 million yuan into the sector [2] - A detailed table of fund flows for individual stocks in the housing construction sector is included [2]