上期所基本金属期货夜盘收盘涨跌不一，沪铜涨0.44%

Group 1 - The core viewpoint of the article highlights the mixed performance of basic metal futures on the Shanghai Futures Exchange during the night session on August 26, with some metals experiencing gains while others saw declines [1][2]. Group 2 - Copper increased by 0.44%, stainless steel rose by 0.35%, lead gained 0.18%, tin was up by 0.07%, and nickel saw a slight increase of 0.05% [1]. - Aluminum remained stable, while zinc decreased by 0.27% and alumina fell by 0.60% [1].