Graduate Quant Trader applicants have rated the interview process at Old Mission 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 39.4% positive. This is according to Glassdoor user ratings.
Candidates applying for Graduate Quant Trader roles take an average of 14 days to get hired, when considering 3 user submitted interviews for this role. To compare, the hiring process at Old Mission overall takes an average of 18 days.
Common stages of the interview process at Old Mission as a Graduate Quant Trader according to 3 Glassdoor interviews include:
One on one interview: 30%
Phone interview: 20%
Skills test: 20%
IQ intelligence test: 20%
Personality test: 10%
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The process took 2 weeks. I interviewed at Old Mission (Chicago Heights, IL) in Aug 2025
Interview
Took an OA, then got moved to first round interview with recruiter. Was asked some easy probability questions, then moved onto a market making game based on my response to a fermi question.
I applied online. The process took 1 week. I interviewed at Old Mission (London, England) in May 2024
Interview
It's a typical trading interview where the interviewer is extremely rude for no reason. Came 20 minutes late, didn't even apologize, and asked me to "tell him about myself" about 5 times in a row. Some brainteasers too. I understand that traders should be able to perform under pressure, but there is a big difference between pressuring an applicant by asking interesting/complex problems and just being plain unprofessional and rude.
Interview questions [1]
Question 1
If 3 6-sided dice are rolled, what is the chance that their product is prime?
I applied online. The process took 3 weeks. I interviewed at Old Mission (Chicago, IL) in Aug 2023
Interview
starts with OA and then a few rounds of interviews, final with one of the head trader/HR people. lots of probability and dice questions. some mental math in there as well
Interview questions [1]
Question 1
question about snickers bars and their price - mental math - only 10 seconds to answer