【建筑建材】周观点：关注指数权重股调整对股价的影响——建材、建筑及基建公募REITs周报（0526-0530）（孙伟风/陈奇凡）

Group 1 - The article discusses the potential impact of President Trump's announcement to raise import tariffs on steel and aluminum to 50%, which has increased uncertainty in the foreign trade environment and may disrupt the operations of export-related companies [2] - The adjustment of various stock indices, including the Shanghai 50 and CSI 300, is set to take effect on June 13, with several construction and building materials companies being removed from key indices, which may lead to stock price impacts for those companies [3]