EV Game+$2.40|Arithmetic Drill94/100|Die Roll EV+$3.50|Binomial Prob0.3125|Mental Mult847×36|Poker Equity62.4%|Black ScholesΔ 0.72|Kelly Criterion18.5%|Bayes UpdateP=0.83|Rank #12,840 pts|EV Game+$2.40|Arithmetic Drill94/100|Die Roll EV+$3.50|Binomial Prob0.3125|Mental Mult847×36|Poker Equity62.4%|Black ScholesΔ 0.72|Kelly Criterion18.5%|Bayes UpdateP=0.83|Rank #12,840 pts|
Quant Interview Prep

Train for quant
trading interviews

Practice EV games, mental arithmetic, and probability puzzles from real interviews — with a ranked leaderboard to benchmark your edge.

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How it works

Four pillars of preparation

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EV / Probability Games

Dice rolls, card games, and synthetic markets ripped straight from Jane Street and Citadel interviews. Make the call: play or pass?

240+ scenariosPlay now →
∑

Market Maker Game

Quote bid/ask spreads under 60-second pressure. Mental arithmetic, Fermi estimates, and probability — the market-making gauntlet from Jane Street and Citadel.

35+ questionsPlay now →
⊞

Math Background Courses

Structured modules on probability, combinatorics, and stochastic processes. Each with downloadable flashcard decks for offline review.

12 modules + flashcards
▲

Ranked Competitive Mode

Go head-to-head in timed EV showdowns. Climb the global leaderboard and benchmark yourself against candidates at top-tier firms.

Live rankingsPlay now →
Ranked Mode

Compete globally.
Know your edge.

Ranked matches pair you with opponents at your level. Score points for speed and accuracy. Climb the global board and see exactly where you stand against candidates targeting the same firms.

◆ELO-style rating system
◆Weekly tournament brackets
◆Firm-specific question packs
▲ Live Rankings
#1 🏆alpha_arbitrage2,840🔥12d
#2 🥈ev_maximizer2,651🔥7d
#3 🥉sigma_grinder2,530🔥9d
#4 quant_phantom2,284🔥4d
#5 risk_neutral2,119🔥6d
You — start training to enter the board
Study Materials

Courses with
downloadable flashcards

Structured theory modules from probability axioms to Black-Scholes intuition. Each course ships with printable Anki-compatible flashcard decks so you can drill anywhere.

Probability TheoryCombinatoricsStochastic ProcessesGame TheoryOptions Pricing

FLASHCARD — Probability

What is the expected value of a fair die?

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Your interview is
closer than you think.

Unlock full access to EV games, arithmetic drills, flashcards, courses, and ranked mode for $19.

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