房屋建设板块12月16日跌0.87%，宁波建工领跌，主力资金净流出1.17亿元

Group 1 - The housing construction sector experienced a decline of 0.87% compared to the previous trading day, with Ningbo Construction leading the drop [1] - The Shanghai Composite Index closed at 3824.81, down 1.11%, while the Shenzhen Component Index closed at 12914.67, down 1.51% [1] - A detailed table of individual stock performance within the housing construction sector is provided [1] Group 2 - In terms of capital flow, the housing construction sector saw a net outflow of 117 million yuan from main funds, while retail investors contributed a net inflow of 95.44 million yuan [2] - The sector also recorded a net inflow of 21.53 million yuan from speculative funds [2] - A detailed table of capital flow for individual stocks in the housing construction sector is included [2]