Quant Trading
Quant traders run systematic or semi-systematic strategies day to day — monitoring positions, sizing risk, and reacting to the market, often building on models a research team develops.
The full desk simulation: quoting a market, tracking P&L, and sizing bets with Kelly.
Games for this track
Quote a bid and ask. Wear the risk.
Market Making
Post a bid/ask spread against a hidden fair value. Counterparties trade against you — a tight, well-centered quote wins; a wide or mispriced one loses.
Relevance ★★★★★
Read the book, fast.
Mental Order Book
A live bid/ask book flashes on screen. Spread, mid price, walk-the-book fill price — answer before time runs out.
Relevance ★★★★★
Buy here, sell there, mark it now.
Trading P&L Sprint
Track a rapid sequence of buys and sells at an average cost basis, then compute realized, unrealized, or total P&L before time runs out.
Relevance ★★★★★
How much of your bankroll?
Kelly Criterion
Given an edge and the payout odds, compute the Kelly-optimal fraction of your bankroll to bet.
Relevance ★★★★★
Coins, dice, and cards — fast.
Probability Blitz
Rapid-fire probability questions: coin flip combinations, dice sums, card draws. Answer within tolerance before time runs out.
Relevance ★★★★★
Monty Hall and friends.
Conditional Probability
The probability questions people actually get wrong: conditional probability, Bayes, cards without replacement, Monty Hall.
Relevance ★★★★★
60 seconds, four operators, zero calculator.
Mental Math Sprint
Add, subtract, multiply, and divide against the clock. Every problem sits at the same intermediate difficulty, so your score reflects speed, not luck of the draw.
Relevance ★★★★★