Message to Trade Ratio

The message to trade ratio is a quantitative metric used to assess the efficiency and intent of participants in an electronic market. It compares the total number of order messages, such as submissions, cancellations, and modifications, against the actual number of executed trades.

A very high ratio often suggests that a participant is engaging in high-frequency activity that does not result in meaningful liquidity provision. This can be an indicator of quote stuffing or other manipulative strategies designed to clog the matching engine.

Exchanges often use this ratio to determine if a trader is consuming excessive system resources without contributing to market depth. It serves as a regulatory tool to discourage spamming the order book.

By monitoring this ratio, platforms can enforce rate limits and maintain a stable trading environment. It is a vital indicator for assessing the health of order flow.

High ratios can lead to increased costs and reduced system performance for all users.