Built for Optiver, Jane Street, Citadel, and beyond

Land the quant trading offer.

The focused prep platform for quantitative trading interviews — question bank, mental math drills, crash courses, and firm guides.

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Prepare for interviews at

Jane StreetJane Street
OptiverOptiver
Citadel SecuritiesCitadel Securities
Two SigmaTwo Sigma
D.E. ShawD.E. Shaw
Hudson River TradingHudson River Trading
Jump TradingJump Trading
IMC TradingIMC Trading
DRWDRW
SIGSIG
Flow TradersFlow Traders
Virtu FinancialVirtu Financial
Jane StreetJane Street
OptiverOptiver
Citadel SecuritiesCitadel Securities
Two SigmaTwo Sigma
D.E. ShawD.E. Shaw
Hudson River TradingHudson River Trading
Jump TradingJump Trading
IMC TradingIMC Trading
DRWDRW
SIGSIG
Flow TradersFlow Traders
Virtu FinancialVirtu Financial

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Everything you need.
Nothing you don't.

One focused toolkit built around how quant firms actually interview.

quanttrading.io/app/questions

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Question Bank
Mental Math
Trading Games
Guides

Question Bank

218 questions total

AllEasyMediumHard
Easy

Expected value of a die roll

Done
Hard

Pricing a European call option using Black-Scholes

Done
Medium

Probability of a random walk returning to origin

Not attempted
Medium

Martingale strategy and its limitations

Not attempted
Hard

Calculate the delta of an at-the-money option

Not attempted

Question Bank

200+ questions across probability, mental math, options theory, and brainteasers — categorized by difficulty and topic, with full worked solutions.

Mental Math Drills

Timed arithmetic and estimation exercises that mirror the speed tests used by Optiver, IMC, and other firms. Track your accuracy and pace over time.

Crash Courses & Firm Guides

Quick-start courses on options, probability, and market structure. Deep-dive interview guides tailored to each firm's known question style.

One plan. Everything included.

Full access for one flat monthly price. No tiers, no upsells.

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$39/ month

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Full access
  • 200+ practice questions across 3 difficulty tiers
  • Unlimited timed mental math drills
  • All crash courses — options, probability, and more
  • Firm guides: Optiver, Jane Street, Citadel, and more
  • Progress tracking across the full question bank
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