I applied through college or university and interviewed at Five Rings Capital.
Interview Details –
They get their HR/recruiting person to do first-round phone interviews. She actually lists herself as an "actress/singer", so it's clear she's just doing recruiting to pay the bills. As you can imagine, she's not exactly a quant.
When the interview starts, she gets right to the point (no small talk). She reads out the question and just sits there, waiting for you to give an answer. She won't be impressed by the clear-headed way you structure the problem, by the snazzy techniques you use, or your by your mental agility. Why? Because it's all beyond her. She's not following your train of thought, she's just bored.
Don't expect much in the way of common courtesy. You won't get a polite e-mail saying "Thanks, but no thanks"; you'll just never hear back from them.
Interview Question – What is sum of all numbers under 1000 that can be divided by 17? View Answer
I applied through college or university - interviewed at Five Rings Capital in December 2012.
Interview Details –
Received a phone interview. Questions included:
Find greatest common divisor of two large numbers. First actually find it given two numbers, then give pseudocode for an algorithm that finds it for any general two numbers.
Analyze a competitive game - prefer to go first or second under a couple of different sets of rules (basically, analyze probability tree of potential moves).
Broker receives an order to purchase N units of stock A and M units of stock B - if individual orders are placed at random, what is the probability that all N units of A are purchased first (and therefore all M units of B are purchased last).
Find the smallest number that is composed of only zeros and ones and is divisible by both three and five.
Various experience/behavioral fit questions - why trading, etc.
Interview Question – Most of the questions are fairly straightforward given a technical background - remember basic probability theory, combinatorics, conditional probability, etc. Remember details of the question - GCD is not the same as greatest common prime factor, make sure to correctly propagate conditional probabilities. Answer Question
The process took a day - interviewed at Five Rings Capital in May 2012.
Interview Details – First round interview was via phone.
The process took 1+ week - interviewed at Five Rings Capital in July 2011.
Interview Details – This is (what I heard of) a very new prop-trading company based in NYC. They said they will offer competitive salary. I got a phone interview and the interview lasts for about half an hour. It contains 3-4 questions, including one math calculation question, one probability questions, and one algorithm questions. The questions are not very difficult, it seems they want to hear you answering fast (as well as right, of course). by the way, before the questions, they will require you to only think of the questions in mind, do not use a pen to write or draft. This confirms my guess that they want you to react fast and accurate. I think I answered all the questions right, but still not get further chance of interview. I think perhaps my reply is not as fast as the interviewer expect, or other candidates are just too strong...
Interview Question – the algorithm to identify if one number is prime or not. Answer Question
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No thanks –