Chicago Trading Company Financial Engineer interview questions

Online coding test followed by a phone interview with one of their financial engineers. Talked about nothing but coding stuffs. After that would be an onsite but I didn't make it.

First was an online coding challenge which was some basic implementations of math functions. Next was a phone interview involving some more coding and a little bit of background. Finally was a super day interview which had three short technical interviews (brain teasers, probability, pseudocoding, etc.), two behavioral interviews, and two short "projects"/activities that were more trading specific. It's a long day but fun if you enjoy technical interviews. They also took us out to dinner and gave us a tour the day before the super day interviews.