AlphaBook

Trade AAPL, MSFT, NVDA, AMZN, GOOGL, META, and TSLA on a live order book anchored to real market prices. Place limit orders, manage your position, and track unrealised P&L as prices move. The order book matches buyers and sellers using strict price-time priority — exactly how stock exchanges work.

Run a roughly market-neutral book through a synthetic crash, replayed one trading day at a time. The basket comes from a real stress episode, blended from historical crashes and re-simulated per stock with its own beta, and there is a panic window and a rebound hidden somewhere inside it. Each name publishes a beta; the beta it actually realises, and whether it is quietly a victim, are only revealed at the bell. Players are scored on P&L net of their worst drawdown, so surviving the panic counts for as much as calling it.

A trading-floor classic. Players estimate the five key statistics (minimum, 25th percentile, median, 75th percentile, and maximum) of a hidden dataset. The market resolves against the true values — perfect calibration wins.

News hits the wire and prices start moving. React to market-moving headlines, take directional positions, and close out before time runs out. Learn how fast-money traders parse information and act.

Bid for poker cards in a sealed-bid auction, assemble the best hand you can, and trade cards with other players in a post-auction market. Combines probability, valuation, and competitive strategy.

Speed and accuracy in arithmetic is a prerequisite for trading floors. Timed questions drill multiplication, division, percentages, and estimation — with a live leaderboard to keep the pressure on.