装修建材板块12月17日涨0.38%，兔宝宝领涨，主力资金净流出8442.78万元

Group 1 - The core viewpoint of the news is that the renovation and building materials sector experienced a slight increase of 0.38% on December 17, with Tubaobao leading the gains [1] - On the same day, the Shanghai Composite Index closed at 3870.28, up by 1.19%, while the Shenzhen Component Index closed at 13224.51, up by 2.4% [1] Group 2 - In terms of capital flow, the renovation and building materials sector saw a net outflow of 84.43 million yuan from main funds, while retail funds had a net inflow of 42.65 million yuan [2] - Speculative funds recorded a net inflow of 41.78 million yuan into the sector [2]