Trader Richard Scardino, left, works on the floor of the New York Stock Exchange Thursday, Oct. 18, 2012. The U.S. stock market headed slightly lower on Thursday, following a leap in cl

 

              Trader Richard Scardino, left, works on the floor of the New York Stock Exchange Thursday, Oct. 18, 2012. The U.S. stock market headed slightly lower on Thursday, following a leap in cl
Trader Richard Scardino, left, works on the floor of the New York Stock Exchange Thursday, Oct. 18, 2012. The U.S. stock market headed slightly lower on Thursday, following a leap in claims for unemployment benefits and weak results from American Express. (AP Photo/Richard Drew)