Probability based. Sit in a room with two people and one asks you probability and market making questions while the other examines your mannerisms. Its to test the quickness of your mind, accuracy, and how you respond in tough, time sensitive situations

Quite behavioral, not too much on the technical side--lot of conversations with a lot of different people as well. Pretty different from most trading firms that I interviewed with--I expected a lot more math/probability style questions.