There were four rounds of interviews; I made it through three. You hear back from them almost immediately if you get moved to the next round. The case is not very hard; I didn't really need to prep for it at all.

Six stage interview process including compliance case study (at-home assignment and in-person scenario), interview with members of Hong Kong office, New York office and London office (all part of Client Protection team)

Four rounds. First round is a typical recruiter screening call. Second round seems to be the most evaluative, part one involves you presenting a take home compliance-related case, as well as doing a brief mini-case live on the call, part two is a typical behavioral interview with a manager. Third round is another behavioral interview with a VP, and the fourth and final round is with the head of legal/compliance, mostly evaluating your interest and likelihood to commit to an offer at that point.