Pershing Square Capital's Bill Ackman is calling for Allergan shareholders to vote on a non-binding resolution, reports CNBC's David Faber, with the latest details on Ackman and Valeant's attempt to ... more 
Pershing Square Capital's Bill Ackman is calling for Allergan shareholders to vote on a non-binding resolution, reports CNBC's David Faber, with the latest details on Ackman and Valeant's attempt to takeover Allergan. less 
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Wed, May 14, 2014 10:18 AM EDT