The first round interview were held at my campus recruiting center and was half behavioral/fit and half math. I come from a history background so they didn't ask anything too technical. They were really looking for the way you think and approach problems so don't worry if you don't come from a finance or business background. The second round was at one of JPM's NY offices and consisted of two back-to-back half-hour interviews. Again, these were mostly behavioral with some math problems thrown in. In the second interview my interviewer gave me a kind of mini-case (like what you would get in a consulting interview) but it was very straightforward (you own a small coffee shop on a college campus, business is going bad: why is that and how can you fix it). They said I'd hear back from them in two weeks but I actually got an email asking to meet for a "follow up" a day later. I think this follow up was actually a kind of secret third round, just judging by what the people I spoke with (who had been hired into this position two years before) said. I just meet three JPM employees for coffee at one of their NY offices. This "round" was entirely fit questions (Why finance? Why JP Morgan Chase?) and was really just a good chance for the candidate to build rapport with the "interviewers" and ask questions. A little nerve-racking but the people I spoke with were very nice so that helped.