装修装饰板块1月15日跌1.33%，科新发展领跌，主力资金净流出2.53亿元

Group 1 - The decoration and renovation sector experienced a decline of 1.33% on January 15, with Kexin Development leading the drop [1] - The Shanghai Composite Index closed at 4112.6, down 0.33%, while the Shenzhen Component Index closed at 14306.73, up 0.41% [1] - Key stocks in the decoration sector showed varied performance, with Decai Co., Ltd. rising by 9.99% to a closing price of 37.22 [1] Group 2 - The main funds in the decoration sector saw a net outflow of 253 million yuan, while retail investors had a net inflow of 252 million yuan [2] - Kexin Development's stock closed at 12.48, down 5.60%, with a trading volume of 63,700 shares and a transaction value of 80.37 million yuan [2] - The stock performance of various companies in the sector indicated significant fluctuations, with some stocks like ST Keli Da and Hainan Development also experiencing notable declines [2] Group 3 - The net inflow of funds for Decai Co., Ltd. was 17.65 million yuan, while it faced a net outflow from retail investors of 8.13 million yuan [3] - Kexin Development had a net inflow from speculative funds of 8.26 million yuan, but a significant outflow from retail investors of 10.11 million yuan [3] - Overall, the data indicates a mixed sentiment among different investor types within the decoration sector [3]