I applied through college or university. The process took 2 weeks. I interviewed at Group One Trading (Chicago, IL) in Nov 2012
Interview
I applied through Campus Recruiting. They came to my school and had a face-to-face interview. Weeks passed and they never contacted me despite numerous attempts to email and call them. Worst of all, they told me that they liked what they saw in me and even gave me the name of the book they use for classes. Don't trust them if you think things went well.
Interview questions [1]
Question 1
Product of two 2-digit numbers.
Square root of 1000.
Game with 10 cards. You are the dealer. You give away a card marked 1-10. Whatever the amount of the card is you have to pay the person. How much would you charge to play this game?
Expected value of a 1-and-1 in college basketball. If a free-throw shooter makes 70% of his free throws, what is the expected amount of points he receives from a 1-and-1 (where if he makes the first shot he gets to shoot he second and if he misses the first shot he does not).
I applied online. The process took 2 weeks. I interviewed at Group One Trading (Chicago, IL)
Interview
It was very straight forward, I applied, got called in. First asked about behavioral based questions. Tell me about yourself. Why trading? Why Group One?
talked about experiences on resume, then they asked me mental math problems. The whole process lasted around 30 minutes.
I applied through a recruiter. The process took 2 weeks. I interviewed at Group One Trading (Chicago, IL)
Interview
Contacted the recruiter with my resume and set up an initial phone interview. This was behavioral with a few easy math questions at the end. Lasted around 30 minutes. After that, had an additional phone interview with managing director. This time was straight behavioral, again around 30 minutes. Both interviews were very conversational, not stressful at all. The questions were not designed to trick you.
Interview questions [1]
Question 1
General behavioral questions
If Michael Jordan had a 90% FT percentage, what is probability he makes first, misses the second.
I applied online. The process took 4 weeks. I interviewed at Group One Trading in Feb 2015
Interview
It was very fair. Asked mental math and a few probability questions along with behavioral questions like why a trader and personality traits. Stories that demonstrate certain qualities like normal behavioral interviews.