Bet Against Bill Ackman, Make Lots of Money?

At this very moment, based on my scan of the charts this weekend, the most popular trade has to be the "Bet against Bill Ackman" gambit. You can see it happening in all of this biggest positions -- those for which he's employed his "long and loud" attitude, when he takes stakes and has an axe to grind, and even those positions that he's mum about. Quite simply, there's activity underneath that suggests Ackman can be broken.