Estimation Under Time Pressure
Medium
Fermi estimation is a standard prop trading round. You have sixty seconds.
How many tennis balls fit in a Boeing 747? You have one minute.
Probability · Quant Finance · ~8 minModel answer & graded attempt
All interview questions
Jump Trading interview questions
Prop Trading7 questions reported in Jump Trading interviews, organised by the group that asks them. Every question carries a model answer and graded feedback on your own attempt.
Questions
7
Easy · Medium
0 · 3
Hard
4
Model builds
0
Built in the spreadsheet grid
Quantitative Trading
Expected value under pressure, adverse selection and inventory risk. 3 questions
Sizing a Trade When the Edge Is Uncertain
Medium
A sizing follow-up tests whether you distinguish an estimated edge from a known probability.
A trade wins 55% of the time and loses 45% of the time. It makes or loses 1% of the capital allocated. What is full Kelly sizing, and why might a trading desk use less?
Financial Mathematics · Quant Finance · ~10 minModel answer & graded attempt
Latency, Queue Position and Adverse Selection
Hard
Electronic market making interviews test whether you understand the microstructure you'd trade in.
Why does latency matter to a market maker, and what is queue position worth?
Trading Scenarios · Quant Finance · ~12 minModel answer & graded attempt
Quantitative Research
Multiple testing, out-of-sample discipline, capacity and decay. 3 questions
Expected Value and the Dice Game
Medium
Tests recursive reasoning. A staple at trading firms.
You roll a fair six-sided die. You may either take the value shown in dollars, or re-roll. You get at most two rolls total. What is the expected value of the game if you play optimally? Then: what if…
Probability · Quant Finance · ~10 minModel answer & graded attempt
From Win Rate to Sharpe Ratio
Hard
Systematic trading interviews use this to test whether you can reason about strategy economics.
A strategy makes 250 trades a year, wins 55% of the time, and wins and losses are the same size (1 unit). Estimate the annual Sharpe ratio. What does this tell you about how much edge a systematic…
Statistics · Quant Finance · ~12 minModel answer & graded attempt
Random Walk and Expected Hitting Time
Hard
A recurring structure in quant interviews. Set up the recursion, don't simulate.
You start at position 0. Each step you move +1 with probability 0.5 and −1 with probability 0.5. What is the expected number of steps to first reach +3? Then: what changes if the walk is bounded below…
Probability · Quant Finance · ~13 minModel answer & graded attempt
Derivatives & Structuring
Greeks, skew, hedging costs and payoff construction. 1 question
Delta, Gamma and Delta Hedging
Hard
Market-making interviews will push hard on gamma.
Define delta and gamma. You are short a straddle and delta-hedged. Explain what happens to your position as the underlying moves, and what you're actually long or short.
Options · Sales & Trading · ~12 minModel answer & graded attempt
Practise the Jump Trading set under interview conditions.
Write your answer, get it graded on technical accuracy, completeness and communication, and see exactly which mechanic you missed.
Company tags reflect where a question type is commonly reported in interviews. They are not sourced from, endorsed by, or affiliated with Jump Trading.