What Are “Market Surveillance” Tools and What Metrics Do They Track?
Market surveillance tools are sophisticated software systems used by exchanges and regulators to monitor trading activity for potential abuse. They track metrics such as order-to-trade ratios (for spoofing/layering), self-trade ratios (for wash trading), trade size distribution, price impact of large orders, and the speed of order entry and cancellation.
These tools generate alerts for patterns that deviate from normal trading behavior.