The DAX curve is pictured at the Frankfurt stock exchange

The DAX curve is pictured at the end of the days trading at the Frankfurt stock exchange August 5, 2011. World stocks fell for an eighth session on Friday though better-than-expected U.S. jobs data limited losses and the euro gained as the European Central Bank bought Portuguese and Irish government bonds. REUTERS/Remote/Pawel Kopczynski (GERMANY – Tags: BUSINESS)