FIFO Matching

FIFO Matching stands for First-In, First-Out, a specific implementation of the time-priority component within an order matching engine. It dictates that among orders at the same price level, the one that was submitted earliest is executed first.

This is the most common and intuitive method for managing queue position in electronic markets. It rewards traders for being the first to identify and act on a price opportunity.

FIFO ensures that the matching process is predictable and fair, preventing later participants from jumping ahead of those who provided liquidity earlier. In the context of derivatives, FIFO is essential for maintaining orderly liquidation and execution of complex strategies.

It is the backbone of most high-speed trading environments.