Zijin Gold International (2259.HK) surged 8% during regular trading to HK$159.90.

The Hang Seng Indexes Company is set to announce its quarterly review results after Friday's close. CICC expects the gold miner to join the Hang Seng Index, though a low free float could weigh against inclusion. Citigroup also flagged the stock as a potential candidate.

The rally builds on strong first-half results reported last week: net profit nearly tripled to US$1.451 billion, revenue doubled to US$3.987 billion, and the company declared its first interim dividend of HK$1.50 per share. Citigroup and Bank of America Securities both rate the stock a buy, with target prices of HK$178 and HK$150, respectively.

International gold prices remain elevated near record highs, supported by continued accumulation from central banks globally, providing a tailwind for gold-mining stocks.