Trainee Trader Interview Questions

11,668 trainee trader interview questions shared by candidates

2 ants are at the same point. One ant starts walking at a rate of 3 feet per minute for 4 minutes. 2 minutes in, the second ant start walking perpendicular to the first ant at a speed of 5 feet per minute and he walks for 1 minute. What is the rate of change of the distance between the two ants?
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Junior Trader

Interviewed at TransMarket Group

4.1
Dec 20, 2014

2 ants are at the same point. One ant starts walking at a rate of 3 feet per minute for 4 minutes. 2 minutes in, the second ant start walking perpendicular to the first ant at a speed of 5 feet per minute and he walks for 1 minute. What is the rate of change of the distance between the two ants?

Eight quants from different banks are getting together for drinks. They are all interested in knowing the average salary of the group. Nevertheless, being cautious and humble individuals, everyone prefers not to disclose his or her own salary to the group. Can you come up with a strategy for the quants to calculate the average salary without knowing other people's salaries?
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Quantitative Trader

Interviewed at Jane Street

4.4
Dec 3, 2022

Eight quants from different banks are getting together for drinks. They are all interested in knowing the average salary of the group. Nevertheless, being cautious and humble individuals, everyone prefers not to disclose his or her own salary to the group. Can you come up with a strategy for the quants to calculate the average salary without knowing other people's salaries?

(3rd Round) You are given a deck of cards with numbers 1, 2, ..., 100 and 2 boxes. Flip a fair coin 100 times, place the respective card in the left box if H, right box if T. Find the expected minimum card in the box with card 100.
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Trader Intern

Interviewed at Jane Street

4.4
Oct 31, 2018

(3rd Round) You are given a deck of cards with numbers 1, 2, ..., 100 and 2 boxes. Flip a fair coin 100 times, place the respective card in the left box if H, right box if T. Find the expected minimum card in the box with card 100.

I own a car worth an amount between 0 and 1000 dollars. You can make a single bid on this car. If you bid higher than the value of the car, you pay that much and get the car. If you bid lower than the value, you don't get the car. 1)how much do you bid 2)how much do you stand to lose should you get the car (or something like this) 3) you have a mechanic who can increase the value of the car to a constant multiple of the cars current value. How much should this constant be in order to make bidding worthwhile...
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Assistant Trader

Interviewed at Jane Street

4.4
Nov 26, 2014

I own a car worth an amount between 0 and 1000 dollars. You can make a single bid on this car. If you bid higher than the value of the car, you pay that much and get the car. If you bid lower than the value, you don't get the car. 1)how much do you bid 2)how much do you stand to lose should you get the car (or something like this) 3) you have a mechanic who can increase the value of the car to a constant multiple of the cars current value. How much should this constant be in order to make bidding worthwhile...

Suppose two players are playing a game. The first player chose an integer between 1-30. The second player picks a different one. After that, a random integer (x) between 1-30 will be generated. The player whose number is closer to x get paid x dollars. Q: Would you go first or second? What number should you pick?
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Summer Trader Internships

Interviewed at Jane Street

4.4
Apr 10, 2017

Suppose two players are playing a game. The first player chose an integer between 1-30. The second player picks a different one. After that, a random integer (x) between 1-30 will be generated. The player whose number is closer to x get paid x dollars. Q: Would you go first or second? What number should you pick?

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