Bill Ackman’s Pershing Square Capital Management disclosed in an SEC filing its holdings as of December 31, 2017. Pershing Square’s one new buy during the fourth quarter was Nike (NKE). Pershing Square increased its stake in one holding, Mondelez (MDLZ). Pershing Square’s top holdings as of December 31, 2017, in order of size, were Restaurant Brands (QSR), Automatic Data Processing (ADP), Mondelez, Chipotle Mexican Grill (CMG), and Howard Hughes Corp (HHC).