Three mandatory phone screens, one or more in-person interviews. The interview process is very extended. It could be weeks between phone screen sessions, they there are at least 3 phone screens. I felt the interview process was more self-gratifying for the interviewer than anything else. He/she told me about the great advantages the company has to offer, the fact that this person has been there for more than a decade and that they would never leave. They also spoke about how they use their own money for quantitative trades, and that they are a very "unique" and different "shop" than everyone else on the block.