Buy the dip in apple?

Wednesday, 11 Sep 2013 | 12:15 PM ET

In Wednesday's top three trades, Herbalife moves on a letter from Bill Ackman's Pershing Square; Southeastern Asset Management raises its stake in News Corp to 12 percent; and General Motors trades lower after the Canadian government sells 30 million shares. And Katy Huberty, Morgan Stanley, explains why she thinks investors should buy what Apple is selling.