A sign for Wall St. is shown outside the New York Stock Exchange, Monday, July 15, 2013 in New York. World stock markets wavered between gains and losses Wednesday July 17, 2013 as investors remained ... more 
A sign for Wall St. is shown outside the New York Stock Exchange, Monday, July 15, 2013 in New York. World stock markets wavered between gains and losses Wednesday July 17, 2013 as investors remained cautious ahead of testimony from U.S. Federal Reserve Chairman Ben Bernanke. (AP Photo/Mark Lennihan) less 
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Associated Press | Photo By Mark Lennihan
Wed, Jul 17, 2013 7:41 AM EDT