Why is Aluminum Corp of China stock sliding today?

Market activity shows a divergence between two major industrial entities. Semiconductor Manufacturing International is experiencing a significant surge in its stock price today, reflecting strong positive momentum. Conversely, Aluminum Corp of China is seeing its stock slide, indicating a downward trend in market value. These simultaneous movements highlight contrasting investor sentiments toward the semiconductor and aluminum sectors, as one company gains substantial value while the other faces a decline in its current trading session.