LeetQuidity
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From the creator of MIT’s internal quant prep course.

Qy

The shortest route to 
Quant Research
Start with the 5-question calibration, then decide whether to apply.
Take the Free CalibrationSee the real demo
Live benchmarking

Live benchmarking, optimized decisions.

N=1,428
Start 68thNow 68thGain +0.0 pts
0th
50th
99th
You · 68th

Members placed at

Citadel Securities
IMC
Optiver
SIG
Millennium
Point72
D. E. Shaw
Jump Trading
Citadel Securities
IMC
Optiver
SIG
Millennium
Point72
D. E. Shaw
Jump Trading
CQ
Capula QR
Quant research offer
$300,000

“i love you alex!!!! thank you so so so much for making this!!!! genuinely the most useful and best course i've taken so far!!!! <3333”

OQ
Optiver QR
Quant research offer
$400,000

“Thank you Alex !!!!!!!!!!”

MQ
MLP QR
Quant research offer
$400,000

“Thank you Alex, the added value of these classes is really huge and a big big help for all those prepping for quant roles!!”

MW
Marshall Wace QR
Quant research offer
$375,000

“It was incredible, thanks Alex, best course so far”

Built around MIT's internal quant course, taught by its creator

The only platform built to both teach and test elite quant candidates.

LeetQuidity combines deep conceptual instruction, real interview-style practice, quant coding screens, and performance analytics in one system built for quant trading and quant research prep.

Probability. Statistics. Market making. Fast math. Coding. Interview execution.

01 Teach

Deep conceptual training

02 Practice

Real interview problems

03 Screen

Quant coding screens

04 Benchmark

Readiness analytics

Designed around the exact topics firms actually test: probability, game theory, market making, statistics, fast math, and Python.

How LeetQuidity compares

Most alternatives offer fragments: question banks, coding drills, or broad theory. LeetQuidity is built as a complete quant training system.

Feature
LeetQuidity
QuantGuideMyntBitTrading InterviewLeetCodeGetCracked
Quant trading interview prep✓✓✓✓—~
Quant research interview prep✓~✓~—~
Structured curriculum✓—~✓~~
Video walkthroughs for quant questions✓—~~——
Graduate-level probability / statistics teaching✓—~~——
Quant coding screens✓—✓~✓✓
Live benchmarking + percentile ranking✓~~—✓—
Mock interviews + performance analytics✓——~—~
MIT internal quant course, taught by its creatorExclusive—————

✓ Strong coverage•~ Partial•— Not core

Real demo handoff

Stop sending people into a fake demo. Show the seeded product path instead.

The public funnel now points at a live preview built from the same path and module contracts the learner product is meant to run on. It is still early, but it is no longer a disconnected marketing toy.

Real demo path

Trading Core Path

A mostly linear premium path that starts from probability and speed, then moves into trading-specific decision-making and market intuition.

Open live demoStart with calibration

Path structure

Area 01

Foundations

3 nodes

Shared probability, arithmetic, and pattern-recognition foundations for trading interviews.

Classic ProbabilityFast MathGeometry & Probability

Area 02

Trading Specialization

1 nodes

Market-making intuition, queue logic, and applied trading drills.

Market Making & Fermi

Featured module workspace

Classic Probability

Classic Probability

Build the event-tree, conditioning, and stopping-time habits that power both trading and research screens.

Access tier

plus

01

The 100 Prisoners Strategy

Text

18m

Cyclefollowing strategy and why the success probability is materially above zero.

02

The 100 Prisoners

Practice Problem

15m

Explain the cyclefollowing strategy and estimate the success probability.

Everything required to secure the offer. Nothing else.

100+ Hours of Intuitive Lectures

Curriculum

Taught by an MIT lecturer. We don’t just give you formulas; we build your intuition from the ground up.

Unique Real Past Questions

Practice

A continuously updated database of actual questions asked in recent interviews at top firms.

Annotated by Fund

Intelligence

Know exactly what Citadel asks vs. Jane Street. Filter questions by the specific firm you are targeting.

Personalized Analytics

Analytics

Track your performance across topics. Identify weaknesses before your interviewer does.

Advanced Filtering & Playlists

Practice

Create custom practice sets. Focus on "Hard Probability" or "Optiver Mental Math".

Interview Video Guides

Curriculum

Watch elite candidates solve problems live. Learn the communication skills that pass the interview.

Industry Intelligence

Intelligence

Deep dives into firm cultures, compensation structures, and specific desk strategies.

Leaderboard & Percentile Ranking

Analytics

See where you stand globally. Know you are ready when you hit the 90th percentile.

Curriculum Architecture

The shortest path from raw talent to elite quant performance.

Quant Trading (QT)

Focuses on rapid execution, game theory, and pricing.

  • ✦Dice, Coins, Cards, Game Theory
  • ✦Market Making & Fast Math
  • ✦Market making and easy trading strategies

Quant Research (QR)

Deep rigorous math and modeling. Includes all of QT, plus:

  • ✦Stats, Econometrics, Linear Algebra
  • ✦Optimization & Machine Learning
  • ✦End-to-end pipeline for a strategy & factor modelling

Shared Industry Intelligence

Both tracks receive comprehensive finance and industry coverage. We break down all the top firms, what they actually do, career paths, day-to-day realities, and exactly what they ask in interviews.

Comprehensive Syllabus

Classic Probability

  • Waiting time problems
  • Position placement problems
  • Expected counts and combinations
  • Bayesian problems
  • Urn and allocation problems
  • Gambler’s ruin
  • Betting games: game pricing
  • Betting games: bet sizing
  • Betting games: hedging
  • Iterative and sequential betting games

Fast Math

  • Last digit cycles
  • Trailing 0s
  • Factorization
  • Primes and primal cycles
  • Scaling laws
  • Modularity

Geometry & Probability

  • Classic brainteasers (greenbook)
  • Grid combinatorics
  • Random walk lattices
  • Random circle theory
  • Chords
  • Arcs and coverage
  • Disks and areas

Market Making & Fermi

  • Market making on populations
  • Market making on queues and lengths
  • Market making on coins, dice, and cards
  • Market making on object values
  • Market making and Fermi on nature

Calculus

  • Optimization
  • Lagrange
  • Calculus and probability

Statistics

  • Central Limit Theorem and Law of Large Numbers
  • The four moments
  • Hypothesis testing
  • Normal, uniform, and common distributions
  • OLS: theory
  • OLS: applied
  • MLE: theory
  • MLE: applied
  • Random variables: probability
  • Random variables: convolutions
  • Random variables: matrices
  • MCMC simulations

Linear Algebra

  • Matrices and vectors: core (theory)
  • Matrices and vectors: advanced (theory)
  • Matrices: numerical and applied
  • EVD and SVD
  • Random matrix theory

Machine Learning

  • Feature selection
  • Dimensionality reduction
  • Time Splits
  • Key architectures

Global Benchmarking

Know exactly when you are ready.

Stop guessing. Benchmark your performance against elite peers globally. Our personalized analytics tell you exactly where you stand and what you need to fix before your first interview.

90th
Target percentile for top-tier firm readiness
12+
Data points analyzed per practice session

Candidate Distribution

Global Cohort • N=4,291

94.2
Your Percentile
0th
50th
99th
YOU

Founding Cohort Access

First 100 accepted applicants get lifetime access for $567.

What's included

  • Access to all questions, problems, and quizzes
  • Interview video guides
  • Advanced filtering and question playlists
  • 15% off all coaching services
  • Lifetime private Discord access
  • Curated, high-signal community
Lifetime Access
$567$1,200

One-time payment. No subscription.

We review applications weekly to ensure community quality.

Calibrate first. Apply second. Then step into the real product.

The public funnel now starts with signal, not guesswork.

Take the Free Calibration
See the real demo
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Practice: The 100 Prisoners