On June 2, Chalco (02600.HK) rose 3.22% in regular trading, trading at HK$11.12/share, with trading volume of HK$60.28 million.

On the news front, the world's largest bauxite-producing nation Guinea previously announced plans to implement export controls in June, and the policy has now entered its implementation window. Guinea accounts for over one-third of global bauxite production, and the measure aims to curb falling raw material prices by limiting export volumes, reinforcing expectations of tightening aluminum resource supply. Simultaneously, Chalco is set to be officially included in the Hang Seng Index on June 8, with passive fund allocation demand providing additional price support.

The stock had previously hit the daily limit on May 26 driven by this dual catalyst before undergoing consecutive sessions of pullback as short-term profit-taking was absorbed. With the key policy and index inclusion dates now imminent, the stock showed renewed strength. Within the aluminum sector, China Hongqiao rose 3.01% in tandem.

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