Market Making Games

Practice trading under uncertainty

Market Making: Dice

Dice valued 1-6. Estimate the sum of hidden dice and trade against random quotes.

Cards valued 2-14 (Ace = 14). Calculate expected value from face-up cards and exploit mispriced quotes.

You are the market maker. Quote a bid-ask spread and defend it against an informed trader who sees all the dice.

Estimate answers to Fermi questions with confidence intervals. Score based on calibration and accuracy.

Free: 5 questions per session