Initially was contacted by HR after a resume drop through on-campus job board. First phone screen was fairly standard with behavioral questions, some market questions (tell me one think that is going on in the markets). After this, took a logic and reading test (kinda like SAT type questions). On site interview was fairly intense. First took a 45 minute logic reasoning test. Afterwards, had 5 interviews with different teams with a lunch thrown in. Each team can ask whatever questions they like. I had standard behavioral questions, mental math questions, market questions, and brainteasers. Also had a weird theoretical math question at one point where they asked me to prove something. All in all, a decent experience. HR was very professional and prompt with emails and such. Interviewers will grill you with questions, but they aren't rude or insulting.

5 Rounds of Interviews, math based brainteasers to gauge your reaction to stress. From the outside the interviews looked very intimidating, however it was nothing unexpected. Prepare like you would for any finance interview.