A system and method of confirming trades of financial instruments such as OTC derivatives is disclosed. The system includes a data interface which accepts data relating to a trade from both the trader and counter party. The data includes different data fields of differing importance. The system includes a matching engine which compares the submitted data and assigns the trade a status depending on which of the data fields match. The system allows a user to filter trades on their status and display the details relating to that trade. The system also allows a user to display the data fields and change the data fields in order to change the status of the trades. The system thus allows a user to electronically confirm a trade and also identify unmatched trades and the information necessary to reconcile such unmatched trades.