According to slashfilm.com, ushers went down the aisles looking for donations:
During this, ushers really did walk out amongst the patrons with buckets in hand and wearing T-shirts with the slogan ‘Save our CEOs’. I don’t know if anybody dropped any cash in, or for that matter what Moore’s team would have done with any donated funds. Perhaps he’ll actually try and pass it on to the ailing institutions and film the ensuing events for the film? Sounds like a possible Moore move.