Clifford Chance (CC) and Allen & Overy (A&O) have landed lead roles on two key Hong Kong initial public offerings (IPOs), working opposite US outfits Davis Polk & Wardwell and Kirkland & Ellis respectively.

The planned listings of state-owned brokerage China Galaxy Securities Co and Sinopec Engineering (Group) Co, a wholly owned subsidiary of Asia’s biggest oil refiner, Beijing-based Sinopec Group, are said to be the biggest IPOs in Hong Kong so far this year.