Article Photos: A slump in McDonald's stock drags Dow lower

James Riley, left, of Dag Securities works on the floor of the New York Stock Exchange, Wednesday, Feb. 13, 2013 in New York. (AP Photo/Henny Ray Abrams)

James Riley, left, of Dag Securities works on the floor of the New York Stock Exchange, Wednesday, Feb. 13, 2013 in New York. (AP Photo/Henny Ray Abrams)