I saw this movie, and was a little disappointed. The movie focuses on the drama of a firm dealing with its exposure to Mortgage-Backed Securities, but only deals with MBS at a very high and vague level. Perhaps the subject matter is too complex to adequately explain in a movie, but without understanding more about the issue, the movie lacked substance to me. And maybe I went to the movie with expectations that were too high, given the positive reviews I read and the great cast.
So set your expectations lower and enjoy the film!