This was a very enjoyable and well done movie. The pacing was perfect and that is very necessary for a movie like this. It pretty much hit the ground running, did minimal story/character building because it wasn't that necessary and doing it on the fly would make the movie more intriguing anyway. Sure there are many points throughout where you question the validity of something like this happening but if you just let go and enjoy the ride it was a great, tense story. It's also a shining example of why I don't do any sort of investing or stock trading and probably never will.
I would definitely recommend people checking this out. It was a very enjoyable watch with a perfect running time to keep you on the edge of your seat and wanting to know how it will play out.