Reading the comments, I'm struck by how I read this scene totally differently to most of them. I see an overworked, annoyed young analyst sent to deal with two rich kids (starting a hedge fund with money they made 'taking boats down the river', then skipping the ISDA requirements by calling their neighbour) who are wasting everyone's time by not even doing the absolute minimum research -- it was 2006, just Google ISDA and you find out the requirements.

Also a security guard kicking out two men in suits from a lobby is just weirdly unrealistic.