Shares in Deutsche Post continued to rise this morning after a jump of 2.2% yesterday, as US alternative investments firm The Blackstone Group was named as a prospective buyer of a stake in the German state-owned mail services company for the second time in four months.

By 10.25 GMT, Deutsche Post shares were trading at €23.33, up 0.5% from last night's close and giving the company a market capitalisation of €27.97bn ($36.1bn).