Plum personality quiz, then a 30min phone interview, then an assessment day which included a short intro to the Bloomberg Terminal and a subsequent simulation exercise answering clients' questions via the terminal's chat function. After that, we where split into two groups, each arguing a different side of a predetermined questioned, for which we had 15min to prepare in our group, and then 15min to argue with the opposing group. This was followed by a tour of the building and then an individual interview with two team leaders, after which we were told to get some lunch and expect a call saying whether we had been successful or not within the next 45ish minutes. If you got a call, there was another interview straight away with more senior managers and, finally, another interview after that (a couple of days later)

Begins with a personality assesment that also includes puzzles meant to test pattern recognition. The assesment and the personality quiz takes about 30-40 minutes and requires no preperation before hand.