Internal Matching Engine it's Predator's specific feature acting like a stock exchange and therefore allowing to match buy and sell orders from clients and/or inhouse (Nostro) instead of sending each order to an electronic exchange outside.

The Internal Matching Engine helps clients by providing more liquidity and lower execution costs. It helps traders maximise large order execution, reduce market impact and obtain price improvement by using the internal liquidity.

The trader has the option to manually cross internal orders or to send them to the automate matching engine. Partial internal order cross is also possible, remaining order size being sent to an external dark pool, exchange  or broker.