Order Book Depth (Market Depth)

Category: science

A real-time metric showing the volume of pending limit orders available at various price tiers above and below the current market price.

Depth analysis is vital for predicting execution slippage. High market depth (a thick order book) indicates that large institutional blocks or arbitrage loops can be executed without causing violent price disruptions. Quantitative scripts scan the depth metrics to dynamically scale execution sizes.

Common Examples

• The algorithm evaluated the order book depth before deploying the three-million-dollar block to ensure our entry wouldn’t trigger a localized flash crash.
• 薄い (Thin) order book depth during the holiday weekend forced our trading desk to tighten our automatic size constraints.