Patent ID: 7908201

Claim:
A method implemented at least partially in a programmed computer for processing a cross order, the method comprising: providing a posting market center having an internal order book; receiving by the programmed computer, a cross order, wherein the cross order identifies a buy order component with a number of shares to buy and a sell order component with a number of shares to sell, the respective number of shares to buy in the buy order component and number of shares to sell in the sell order component being equal and forming the cross order; matching by the programmed computer, at least a portion of the cross order against the internal order book, resulting in a remainder of the cross order; matching by the programmed computer, the remainder of the cross order against the opposite component of itself, resulting in an unexecuted portion of the opposite component of the cross order; converting by the programmed computer, the unexecuted portion of the opposite component of the cross order into a limit-priced order; and posting by the programmed computer, the limit-priced order generated from the conversion to the internal order book.