装修建材板块9月15日涨0.25%，北京利尔领涨，主力资金净流入9470.14万元

Core Insights - The renovation and building materials sector saw a slight increase of 0.25% on September 15, with Beijing Lier leading the gains [1] - The Shanghai Composite Index closed at 3860.5, down 0.26%, while the Shenzhen Component Index closed at 13005.77, up 0.63% [1] Stock Performance Summary - Beijing Lier (002392) closed at 9.97, up 10.04% with a trading volume of 1,006,000 shares [1] - Ruida Technology (002066) also rose by 10.04% to 15.13, with a trading volume of 172,800 shares [1] - Other notable performers included Jianlang Hardware (002791) up 2.58% to 23.49 and Fangda Group (000055) up 2.05% to 4.49 [1] Capital Flow Analysis - The renovation and building materials sector experienced a net inflow of 94.7 million yuan from institutional investors, while retail investors saw a net inflow of 13.49 million yuan [2] - However, speculative funds recorded a net outflow of 108 million yuan [2] Individual Stock Capital Flow - Beijing Lier had a net inflow of 10.69% from institutional investors, but a net outflow of 7.34% from speculative funds [3] - Ruida Technology saw a net inflow of 19.94% from institutional investors, with a net outflow of 10.13% from speculative funds [3] - Jianlang Hardware had a net inflow of 6.47% from institutional investors, but a net outflow of 7.37% from speculative funds [3]