水泥板块1月15日跌0.42%，金隅集团领跌，主力资金净流出3亿元

Group 1 - The cement sector experienced a decline of 0.42% on January 15, with Jinju Group 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 cement sector showed varied performance, with Metal Grass East rising by 4.59% and Jinju Group declining significantly [1] Group 2 - The cement sector saw a net outflow of 300 million yuan from major funds, while retail investors contributed a net inflow of 245 million yuan [2] - Major funds showed a net inflow in stocks like Conch Cement, while other stocks like Jinju Group and Huaxin Cement experienced net outflows [3] - The trading volume and turnover for various cement stocks varied, with Conch Cement having a turnover of 583 million yuan [1][2]