FILE - In this July 18, 2011 file photo, trader James Riley, center, works on the floor of the New York Stock Exchange. World stock markets were mostly down Thursday, July 21, 2011, after China's ... more 
FILE - In this July 18, 2011 file photo, trader James Riley, center, works on the floor of the New York Stock Exchange. World stock markets were mostly down Thursday, July 21, 2011, after China's manufacturing contracted and uncertain traders watched for progress on the U.S. government debt limit and Europe's debt crisis.(AP Photo/Richard Drew, file) less 
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Associated Press | Photo By Richard Drew, file
Thu, Jul 21, 2011 6:57 AM EDT