Abstract: A method for responding to order flow is disclosed. The method comprises establishing for a market maker a rule for automatically generating a contra order in response to an order. The rule comprises at least one condition comprising at least one characteristic describing the order. The at least one condition allowing matching based on a security in the order is in a security list specified by the market maker. The method further comprises receiving from a trader the order; matching on the computer the order to the at least one condition of the rule; automatically generating the contra order in response to the order, if the rule is satisfied; and providing the contra order for acceptance.

Abstract: A bartering system implements barters between a plurality of parties each having one or more classes of items available for barter. Preferably, barter orders are created by designating a selected quantity of a first class of items to be bartered, designating a date range for transferring title of the first class items to be bartered, designating a barter value of the first class of items to be bartered, and designating a second class of items to be acquired. Barter orders are posted via the Internet to a barter database and may be displayed via the Internet. Posted barter orders whose first class of items match the second class of items of a barterer's order are preferably displayed. Posted barter orders from the display are selected to effectuate a barter transaction which combines a barterer's barter order with the selected posted order(s).

Abstract: A bartering system implements barters between a plurality of parties each having one or more classes of items available for barter. Preferably, barter orders are created by designating a selected quantity of a first class of items to be bartered, designating a date range for transferring title of the first class items to be bartered, designating a barter value of the first class of items to be bartered, and designating a second class of items to be acquired. Barter orders are posted via the Internet to a barter database and may be displayed via the Internet. Posted barter orders whose first class of items match the second class of items of a barterer's order are preferably displayed. Posted barter orders from the display are selected to effectuate a barter transaction which combines a barterer's barter order with the selected posted order(s).