Old Mission Capital Interview Questions

20 total interview insight submissions
Interview Experience (79%)

The Interview Experience is a score from 1 star (very negative) to 5 stars (very positive) generated based on the Interview Insights at this company.

The number you see in the middle of the doughnut pie chart is the simple average of these scores. If you hover over the various sections of the donut, you will see the % breakdown of each score given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few interview insights). Simply put, as a company gets more reviews, the confidence of a "true score" increases so it is pulled closer to its simple average and away from the average of the entire dataset.

3.6
  • Very Negative
  • Negative
  • Neutral
  • Positive
  • Very Positive
Interview Difficulty (99%)

The Interview Difficulty is a score ranging from very difficult (red) to very easy (green) generated based on the Interview Insights at this company.

The number you see in the middle of the doughnut pie chart is the simple average of these scores. The higher the number, the more difficult the interviews on average. If you hover over the various sections of the doughnut, you will see the % breakdown of each score given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few interview insights). Simply put, as a company gets more insights, the confidence of a "true score" increases so it is pulled closer to its simple average and away from the average of the entire data set.

3.5
  • Very Easy
  • Easy
  • Average
  • Difficult
  • Very Difficult
% Interns - FT Offers (57%)

The % of Interns Getting a Full Time Offer chart is meant to provide a realistic estimate of the hiring practices of the company based on the reviews at this company.

The number you see in the middle of the doughnut pie chart is the simple average of these scores. If you hover over the various sections of the doughnut, you will see the % breakdown of each score given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few reviews). Simply put, as a company gets more reviews, the confidence of a "true score" increases so it is pulled closer to the simple company average and away from the average of the entire data set.

60%
  • 0%
  • 10%
  • 20%
  • 30%
  • 40%
  • 50%
  • 60%
  • 70%
  • 80%
  • 90%
  • 100%

Interviews at Old Mission Capital

Filter by:
Year
Job Title
Group/Division
Location
Experience
Difficulty
Junior Trader
Year 2025
Job Title Junior Trader
Group/Division Prop Trading
Location Chicago
Experience
Very Positive
Difficulty
Easy
1st Year Analyst
Year 2024
Job Title 1st Year Analyst
Group/Division N/A
Location Boston
Experience
Neutral
Difficulty
Average
Junior Trader
Year 2020
Job Title Junior Trader
Group/Division Trading
Location Chicago
Experience
Positive
Difficulty
Difficult
Engineer
Year 2021
Job Title Engineer
Group/Division Trading
Location Chicago
Experience
Neutral
Difficulty
Difficult
Student / Prospective Monkey
Year 2022
Job Title Student / Prospective Monkey
Group/Division Quantitative Research
Location New York
Experience
Very Positive
Difficulty
Very Difficult
Intern
Year 2018
Job Title Intern
Group/Division Prop Trading
Location Chicago
Experience
Neutral
Difficulty
Difficult
Junior Trader
Year 2018
Job Title Junior Trader
Group/Division Finance
Location New York
Experience
Neutral
Difficulty
Average
Junior Trader
Year 2014
Job Title Junior Trader
Group/Division Prop Trading
Location New York
Experience
Positive
Difficulty
Difficult
Intern
Year 2015
Job Title Intern
Group/Division Prop Trading
Location Chicago
Experience
Neutral
Difficulty
Average
Intern
Year 2014
Job Title Intern
Group/Division Quantitative Research
Location New York
Experience
Positive
Difficulty
Average

Interview Questions & Answers - Old Mission Capital Examples

Floor Trader Interview - Prop Trading

Anonymous interview candidate in Chicago
Interviewed: April 2025
Outcome
No Offer
Interview Source
Applied Online
Length of Process
2-3 months
Application
Phone Interview
1 on 1 Interview
Skills Test
Interview
Applied online, took 1 week to hear back about a call with a recruiter. Basic behavioral/situational questions, why Old Mission, what would you do in x situations (read job description), going over details of the interview process and the role, logistics mostly. 2 weeks later, interviewed with a Floor Trader at Old Mission. Great guy, very relaxed. Behavioral/situational questions: how would you react if x happened in the trading pit? How do you handle stress and criticism? Some basic mental math, fermi questions, and options strategy (which options or combinations of options to buy when). 2 weeks later, call with head of desk at Old Mission (was told this was the last round, can't confirm). Basic stats principles, (estimation, confidence intervals, normal distribution, skew) asked to create confidence intervals on many different things like average return of the S&P, or the number of games a team wins in a year. Then market making game, you quote bid ask, interviewer either buys from or sells to you, and you update your bid ask for the next iteration. Keep track of maximum drawdown, current p&l, short/long exposure, weighted average price between rounds. Many follow up questions about your logic and reasoning for your quote. Heard back in about a week, did not get an offer. Was told market making portion of the interview was too weak. I was not prepared for it. Overall a great experience, wish the process was a little faster, but recruiters were very responsive throughout the process.
Interview Questions
Market Making Questions
Confidence interval on S&P 500 return past 30 years
Confidence interval of portfolio value if you invested $1 in S&P 500 30 years ago
If you think the market is overestimating volatility, what options strategy can you use

Quant Trader Interview

Anonymous interview candidate in Boston
Interviewed: July 2024
Outcome
No Offer
Interview Source
Applied Online
Length of Process
1-2 months
Application
Phone Interview
Interview
Applied online and received an online assesment. The OA consisted of two parts: The first is a math section with something like 35 questions. Most problems are your typical probability and statistics questions and other math puzzles. The second part is a coding question probably around LC medium level (I think it was return median as you add more elements to a list).

Had to wait around a week for a response and then got a call to interview with their head of recruiting. He walks through some details about the company and then does very similar math problems to the OA and some market making games. One was on making a market on the total number of Olympic gold medals the US has won.

Got rejected after this round about 2 days later.
Interview Questions
Given a list of n numbers, return the median of each sublist up to the kth element.

Trader Interview - Trading

Anonymous interview candidate in Chicago
Interviewed: September 2020
Outcome
No Offer
Interview Source
College / University / On Campus Recruiting
Length of Process
Less than 1 month
Application
Phone Interview
1 on 1 Interview
IQ / Intelligence Test
Background Check
Interview
Initial phone screen about 20 minutes, then an interview with a senior trader, last interview was with CEO. Lots of questions about hypothetical scenarios to see how you think, stats, and market making/options.
Interview Questions
What is the expected value of a dice roll?
Make me a market on __

Senior Software Engineer Interview - Trading

Anonymous interview candidate in Chicago
Interviewed: October 2021
Outcome
No Offer
Interview Source
Recruiter
Length of Process
1-2 months
Application
Phone Interview
1 on 1 Interview
Skills Test
Interview
Had an online coding assessment, which asked a LeetCode hard question. I was given an hour to finish it with no test cases given. It was barely enough time for me to finish the solution and test it.

Phone screen 1 was on linux fundamentals. I was asked to write a feature for a C++ library on the linux command line.

Phone screen 2 was on C++ implementation skills. I was asked to write a unordered_map class. My implementation had a bunch of issues and I ended up not passing PS2. There should be one final round of onsite interview to finish off the process.
Interview Questions
Implement an unordered_map class in C++

Junior Quant Trader Interview - Quantitative Research

Anonymous employee in New York
Interviewed: August 2022
Outcome
Accepted Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
1 on 1 Interview
Skills Test
IQ / Intelligence Test
Personality Test
Interview
Standard brainteaser and probability questions as asked at quant funds. Overall very fast and efficient, and felt like I was challenged in an interesting way.
Interview Questions
Asking to find the game theory optimal strategy in a simplified poker game

Quant Trading Intern Interview - Prop Trading

Anonymous interview candidate in Chicago
Interviewed: November 2018
Outcome
No Offer
Interview Source
College / University / On Campus Recruiting
Length of Process
1-2 months
Application
Phone Interview
1 on 1 Interview
Skills Test
IQ / Intelligence Test
Interview
Submitted a resume at a career fair and also applied online. Received an initial Coding and Mathematics assessment. The assessment was challenging and mainly brainteasers with some Prob/Stats. The coding consisted of 2 questions/exercises, one was pretty challenging the other was easy. I passed the assessment and had 2 phone interviews 3 weeks after; one was the HR and other was with a trader. The questions in the phone call with the trader were pretty challenging and while I was able to get 2/4 correct. I did not make it to the next round.
Interview Questions
This one was an absolute doozy:
Four points are chosen uniformly at random on the surface of a sphere. What is the probability that the center of the sphere lies inside the tetrahedron whose vertices are at the four points?

There was also a Markov Chain chess question. It essentially went as follows:
You and I play chess. 1/2 games end in draws and in the other half I win with 2/3 probability and you win with 1/3. If the matches with either of us winning 3 consecutive games, what is the probability that I win?

Trading Intern Interview - Finance

Anonymous interview candidate in New York
Interviewed: September 2018
Outcome
No Offer
Interview Source
College / University / On Campus Recruiting
Length of Process
1-2 months
Application
Phone Interview
Interview
Tough interview had several tough probability questions. I was able to solve most of them. There were 7 questions and they all had to do with probability distributions.
Interview Questions
1) What is the expected value of a random variable x in [0,10]? What is the variance?
2) What is the expected value of rolling a fair dice? What if you can re-roll? What if the re-roll cost 1 dollar and you make 1 dollar for every dot on the die that is shown?
3) What is the ratio of the total number of days in a year to the days in a month for an average year?
4) In how many ways can you have three numbers that sum to 10? What about 11?
5) In how many ways can you have three numbers that some to n for any n greater than or equal to 3?

Trading Intern Interview - Prop Trading

Anonymous interview candidate in New York
Interviewed: January 2014
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Interview
Phone interview with probability and brainteaser type questions. Most questions seem to come straight from the quant interview books. Best to review combinatorics/expectation/conditional probability
Interview Questions
There are 5 pirates and they are trying to split 100 gold coins in a rational way. The most senior pirate will choose to split in a certain way and all the other pirates will vote to agree or disagree. The most senior pirate is always the one to propose the split and must get at least a majority of the votes from the other pirates for the split to work. How should the senior-most pirate split the 100 gold coins such that he will survive and maximize his own earnings? The pirates are all rational, so will all try to maximize their own earnings. If the pirates can't agree, they will overthrow the oldest pirate and make their own split.

Trader Intern Interview - Prop Trading

Anonymous interview candidate in Chicago
Interviewed: 2015
Outcome
No Offer
Interview Source
College / University / On Campus Recruiting
Length of Process
Less than 1 month
Application
Phone Interview
IQ / Intelligence Test
Interview
Applied online through university job board. Phone interview included arithmetic operations that was supposed to be done without pen or paper.
Interview Questions
There were multiple questions based on arithmetic operations involving multiple digits. These questions are supposed to answered without consulting a calculator nor using a pen and paper. They're pretty easy if you know all the tricks, which is the key of preparing for these interviews. There was a couple of combinatorics/probability problems, also had to be done mentally.

Quantitative Research Intern Interview - Quantitative Research

Anonymous interview candidate in New York
Interviewed: March 2014
Outcome
No Offer
Interview Source
Applied Online
Length of Process
Less than 1 month
Application
Phone Interview
Interview
Applied online, received an invitation to phone interview two business days later. Phone interview questions were mostly mental math, probability, and statistics. Some questions seemed to come straight from popular quant interview study books.
Interview Questions
What is the probability of drawing a 4 of a kind in a 5 card poker hand?
What is fifty six times sixty seven (no calculator, quick response)?
You have two decks of cards, one with 52 cards and one with 104. If your goal is to draw a black card followed by a red card, which deck would you choose?
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