Abstract: An instrument is traded in an automated exchange system. A first order for the instrument on a first side of a market and a second order for the instrument on a second side of the market are received. The first and second orders are evaluated regarding the possibility for a match between the first and the second orders. If such a match is possible, a preliminary trade is created using the first and the second orders. A third order for the instrument on the first side of the market is received and compared with the first order. If the third order is better than the first order, then the preliminary trade is modified. A final trade is created using the orders currently part of the preliminary trade.

Abstract: Method for trading an instrument in an automated exchange system, comprising the steps of receiving a first order for the instrument on a first side of a market; receiving a second order for the instrument on a second side of said market; evaluating the first and the second orders regarding the possibility for a match between the first and the second orders; if such a match is possible, creating a preliminary trade using the first and the second orders; receiving a third order for the instrument on the first side of the market; comparing the third order with the first order; if the third order is better than the first order, modifying the preliminary trade; and creating a final trade using the orders currently being part of the preliminary trade.

Abstract: A real-time deal engagement outcome determination method and system as well as a deal engagement system implementing the method are disclosed. The real-time deal engagement outcome determination is based on the determination of the outcome of possible scenarios for received taken positions and setting a combined outcome as the deal engagement outcome. Any further taken positions having an outcome that effects any previously determined outcome will be added to the deal engagement outcome by the net effect and any further taken positions having an outcome not effecting previously determined outcomes will be added to the deal engagement outcome by a combined outcome of the further position taken. By utilising only worst case scenarios a risk determination can be made and by utilising only maximum case scenarios a gain determination can be made.