I found the pilot to be a fairly captivating look into the exhausting and (a little too) exciting lives of finance professionals. I don't believe for one second that there's so much sex involved, but the part about the seemingly never ending hours and the near perfect execution demanded of those working in this field feels realistic.
A glaring downside, however, is the lack of focus in this episode as it jumps around between characters and stories without a strong thematic connection other than "this work is hard, look how hard these people have to work".
Even though for the most part I was interested to se what happens next, there are times where I felt I was looking at the clock a little too frequently. Sometimes there's just nothing going on, so pacing was somewhat of an issue.
I also had a problem with what happened to one of the characters, though I won't spoil their story. It was very sudden and unexpected, but not in a good way at all and felt like a twist for twist's sake. Instead of helping enhance the narrative and theme, it was just silly writing.