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Math & probability

Stochastic Calculus

Brownian motion, Itô's lemma, SDEs

Overview

About stochastic calculus questions in quant interviews

Brownian motion, martingales, Itô's lemma, and stochastic differential equations — the continuous-time math behind derivatives pricing that researcher rounds drill into.

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.

The library

All 30 stochastic calculus questions

View all 30 stochastic calculus questions