Greek private equity firm Marfin Investment Group has delivered on its promise to invest 80% of the record €5.2bn ($7.5bn) it raised in July through a listing on the Athens stock exchange, despite wrangling with the Greek government over one of its big investments.

MIG, the buyout arm of Greek lender Marfin Popular Bank, has managed to invest 80% of its capital within six months of listing despite the pressure of the credit crunch halting typical buyout deals across Europe.