American International Group may raise as much as US$ 6.5 billion from the sale of its remaining stake in AIA Group in Asia’s second-largest block sale ever, exiting a business the US insurer helped found nearly 100 years ago.

AIG is offering its 13.69 per cent stake in AIA , or 1.65 billion shares, in a range of HK$ 29.65-HK$ 30.65 apiece, sources with direct knowledge of the plan said.