Margin Efficiency Ratio

The margin efficiency ratio is a financial metric used to evaluate how effectively a trader or firm utilizes their collateral to maintain open derivative positions. It compares the total exposure of a portfolio against the amount of margin actually required by the exchange or clearinghouse.

A higher ratio indicates that a greater portion of capital is actively supporting market positions rather than sitting idle. This metric is vital for managing risk, as excessive efficiency might imply over-leverage.

Traders aim to maximize this ratio to increase their return on equity without violating risk management thresholds. It serves as a benchmark for comparing the capital intensity of different trading strategies.