Overview

About stochastic calculus questions in quant interviews

Stochastic Calculus is one of the highest-frequency categories in quant interviews. Jane Street, Optiver, and SIG lean on this material because it filters candidates fast: if your reasoning under uncertainty is shaky, the rest of the interview rarely recovers. The 30 stochastic calculus questions on this page are sequenced from easy to hard so you can build pattern recognition before facing problems with deliberate ambiguity. Most interviewers reuse the same handful of setups, so the goal is to identify the structure within seconds, not to invent a solution from scratch.

How to study this topic

A path that works

1. 1

   Start with the intro set

   This topic skips the warm-up. Questions land at medium difficulty and above, so read each prompt twice before solving.

2. 2

   Drill the medium tier next

   7 medium questions sit in the sweet spot where most interview questions cluster. Time yourself, then redo any you missed two days later.

3. 3

   Stress-test on hard problems

   23 hard questions simulate the on-site round. Skip looking at solutions for at least 20 minutes, then write up your approach.