Trader Peter Tuchman, left, works on the floor of the New York Stock Exchange Thursday, May 23, 2013. A global stock market slump is continuing on Wall Street as traders worry about how

 

              Trader Peter Tuchman, left, works on the floor of the New York Stock Exchange Thursday, May 23, 2013. A global stock market slump is continuing on Wall Street as traders worry about how
Trader Peter Tuchman, left, works on the floor of the New York Stock Exchange Thursday, May 23, 2013. A global stock market slump is continuing on Wall Street as traders worry about how committed the Federal Reserve remains to keeping up its bond-buying program. (AP Photo/Richard Drew)