2 rounds then superday, first was pretty standard but was more real-world themed than other trading firms i've interviewed at. second round I messed up, misunderstood the question and should have asked more clarifying questions.
Interview questions [1]
Question 1
betting strategy for probability game over long run, you had to calculate e.v. of the game as well.
Math Questions, no behavioral. They still use questions from the green book. probability, brain teaser and mental math heavy. No programming question though. Superday is market making games, group sessions.
I applied online. I interviewed at Citadel Securities
Interview
Received OA first, passed it then get to first round technical interview. Very chill interviewer graduated from TOP 10 Undergrad, asked about resume then a couple of easy to average questions.
QT Intern applicants have rated the interview process at Citadel Securities with 3.7 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 33% positive. To compare, the company-average is 53.8% positive. This is according to Glassdoor user ratings.
Common stages of the interview process at Citadel Securities as a QT Intern according to 3 Glassdoor interviews include:
Phone interview: 100%
Here are the most commonly searched roles for interview reports -