1. A method including: selecting by a computing device a group of filled orders from a plurality of orders for a tradeable object as an effective trade based on a user configurable definition, wherein each of the plurality of orders has been filled, wherein the group of filled orders includes two or more of the plurality of orders, wherein the user configurable definition is used to determine a first order from the plurality of orders initiating the effective trade and which other orders in the plurality of orders should be grouped with the first order; computing by the computing device a profit/loss value for the effective trade based on the group of filled orders and data relating to the plurality of orders; and providing by the computing device the profit/loss value for the effective trade to a trading application.