Some of the biggest names in investing gather in New York City Monday for the annual Sohn Conference.

Bill Ackman will be speaking at the conference. He is seeking to restore his damaged reputation after his loss in Valeant Pharmaceuticals (VRX) . He also may weigh in about his Chipotle (CMG) campaign and whether he might seek to shake things up at Mondelez (MDLZ) , especially if it is an M&A target.

The Deal's Ron Orol has details from Washington. 

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