Goldman Sachs is set to reap a $2.5bn (€2bn) paper profit from its investment in Industrial & Commercial Bank of China when the company floats next month. Its expected $21bn dual listing would be the world's largest to date.

Analysts predict the potential value of Goldman's 5.75% stake, for which the bank paid $2.58bn in May, could double to more than $5bn when the offering is launched on the Shanghai and Hong Kong markets.