The old adage that you win some and you lose some couldn't be truer when it comes to activist investor and Pershing Square Capital Management LP head Bill Ackman. As Ackman becomes ever more engrossed in an activist battle with payroll and outsourcing services company Automatic Data Processing Inc (ADP) , take a look at some of Ackman's biggest bets. While the results varied, his stakes in Valeant (VRX) , Chipotle (CMG) , J.C. Penney (JCP) and Mondelez (MDLZ) always made good headlines. 

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