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Browse quant interview questions by topic.

35+ topics, 1000+ questions, every one tagged with the firms that ask it. Stop guessing what to study.

Browse topics

What you get

More than a question list

Every topic page maps to the firms that ask it, the difficulty curve to follow, and the study plan it rolls into. Browse by topic, then drill with intent.

01 · Discovery

Filter by firm

See exactly which problems Jane Street, Citadel, Optiver, and 12 other top firms ask in their quant rounds.

Jane StreetCitadelOptiver+12

02 · Drill order

Difficulty-ranked drills

Easy → Medium → Hard sequencing per topic so you build pattern recognition before complexity ramps.

EasyCoin flip expected value
MediumOptimal stopping problem
HardPricing American option

03 · Structure

Maps to study plans

Topics roll up into firm-specific prep sequences. Pick a track and the plan tells you the order.

ProbabilityStatisticsBrain TeasersTrading

04 · Progress

Track your progress

Per-topic completion rate and missed-question recall. Weak spots resurface so you don't drift.

Probability78%
C++42%
Brain Teasers21%

Math & probability

Pass the probability gauntlet every quant interview opens with

Expected value, conditional probability, Bayes, and the brain teasers Jane Street, Optiver, and SIG screen on. Roughly 80% of first-round quant interviews lead with a probability problem. Drill the patterns until the answer is reflex.

209 questions · 6 topics · Asked at Jane Street, Citadel, Two Sigma, DE Shaw

78 questions·Jane Street

Probability & Statistics

Expected value, conditional probability, Bayes

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20 questions·Jane Street

Brain Teasers

Logic puzzles, mental math, lateral thinking

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3 questions·Jane Street

Combinatorics

Counting, arrangements, discrete probability

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29 questions·Citadel

Stochastic Calculus

Brownian motion, Itô's lemma, SDEs

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43 questions·Optiver

Mental Math & Estimation

Speed arithmetic, Fermi estimation, drills

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36 questions·Jane Street

Game Theory & Logic

Nash equilibria, auctions, strategic play

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Coding & systems

Write the code that lands the HFT and quant-dev offer

Low-latency C++, vectorised Python, and the data-structure questions Jump Trading, Hudson River Trading, and Citadel ask quant developers. Each problem is tagged by language and difficulty so you can drill exactly the loop tightness you need.

196 questions · 6 topics · Asked at Jump Trading, HRT, Citadel, Optiver

34 questions·Jump Trading

Low Latency

Cache-friendly C++, hot paths, nanoseconds

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39 questions·HRT

Concurrency

Lock-free queues, atomics, memory ordering

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36 questions·HRT

Memory Optimization

Allocators, layout, cache behaviour

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28 questions·Jane Street

Data Structures

Hash maps, heaps, order-book structures

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39 questions·Jane Street

Algorithms

Complexity, optimisation, classic patterns

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20 questions·Two Sigma

Data Manipulation

Pandas, NumPy, research-style problems

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Markets & trading

Think like a market maker before you interview as one

Bid-ask spread economics, options Greeks, inventory risk, and the order-book reasoning Citadel Securities, Optiver, and IMC press on in trader rounds. Pricing intuition that survives the fitness-to-quote stress test.

176 questions · 6 topics · Asked at Citadel Securities, Optiver, IMC, SIG

64 questions·Citadel Securities

Market Microstructure

Spreads, inventory, adverse selection

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22 questions·SIG

Options Pricing

Black-Scholes, parity, arbitrage bounds

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32 questions·SIG

Options Greeks

Delta, gamma, vega, hedging dynamics

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15 questions·Citadel

Derivatives

Forwards, futures, swaps, payoff logic

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27 questions·Citadel

Risk Management

VaR, position sizing, Kelly criterion

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16 questions·Two Sigma

Portfolio Optimization

Mean-variance, Sharpe, allocation

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The full library

Every topic gets its own page

Click into any of the 40 topics and you land on a dedicated page with the full question list, recommended difficulty progression, the firms that ask it, and the skills it covers. No flat dump. Every topic is structured.

40 topics · 1006+ questions · 8 categories

Open full directory
TopicsProbability

Math & probability

Probability

Difficulty78 questions
Easy 25Medium 34Hard 19
EasyCoin flip expected value
MediumBayes update for two coins
HardExpected stops in random walk

Asked at

Jane StreetCitadelTwo SigmaDE Shaw

More topics

Frequently asked

Questions about topics

What's the difference between a topic and a track?
Tracks are full career paths: Quant Developer, Quant Researcher, and Quant Trader. Each track has its own curriculum and study plan. Topics are subject areas like probability, C++, or market making. Most candidates work across several topics regardless of which track they target.
How are topics chosen?
Every topic on Myntbit comes from a real question asked at a top quant firm. We tag each question with its topic, and a topic shows up here once it has at least 5 questions in the library.
Can I focus on just one topic?
Yes. Open any topic page and you will see the full question list filtered to that topic, the recommended easy-to-hard progression, and the firms that ask it most often. The training page also takes a topic filter directly in the URL.
Are new topics added over time?
Yes. We add a new topic once the question library has enough coverage to make the section useful. If there is a specific topic you want next, suggest it on the contribute page.
How does this connect to study plans?
Study plans bundle topics into firm-specific or role-specific sequences. Each plan tells you which topics to do and in what order. Browse the directory when you want to explore on your own. Pick a study plan when you have a target firm in mind.