Abstract: A system for determining an opening price for products traded over a distributed, networked computer system, includes a plurality of workstations for entering orders for financial products into the distributed, networked computer system and a server computer coupled to the workstations for receiving the orders. The server computer determines when a time just prior to an official opening time for opening regular trading has been reached, and executes a server process that determines an opening price for the product. The server process identifies the oldest of interest at the most aggressive price on each side of the market and selects the older interest of the identified interest to designate as initial interest. The server process matches initial interest against all contra side interest.

Abstract: A method for trading a security in an electronic market includes entering an order at a client station for executing against any market participant that can at least in part satisfy the order, determining a threshold for executing the entered order based on an inside price of the security in the electronic market, matching a portion of the entered order at a server system against interest in the market that does not exceed the determined threshold, and returning any unmatched portion of the entered order that can not be matched by the interest in the market without exceeding the determined threshold.

Abstract: A system for determining an opening price for products traded over a distributed, networked computer system, includes a plurality of workstations for entering orders for financial products into the distributed, networked computer system and a server computer coupled to the workstations for receiving the orders. The server computer determines when a time just prior to an official opening time for opening regular trading has been reached, and executes a server process that determines an opening price for the product. The server process identifies the oldest of interest at the most aggressive price on each side of the market and selects the older interest of the identified interest to designate as initial interest. The server process matches initial interest against all contra side interest.

Abstract: A method for trading a security in an electronic market includes entering an order at a client station for executing against any market participant that can at least in part satisfy the order, determining a threshold for executing the entered order based on an inside price of the security in the electronic market, matching a portion of the entered order at a server system against interest in the market that does not exceed the determined threshold, and returning any unmatched portion of the entered order that can not be matched by the interest in the market without exceeding the determined threshold.