Client’s revenue from a completed transaction. In terms of profit, the trader can consider his revenue from the trade or revenue over a time period from a succession of trades. For a single trade, a profit is made when the price of the asset moves in the direction of expectation of the trader’s position. So for a long trade, the trader makes a profit when the price of the asset moves higher, and for a short trade, when the price of the asset is lower. When profitability is viewed over a time period, then the trader has to make more from his winning trades than he has lost from his losing trades for the time period in view for a profit to have been made.