Patent ID: 7386499

Claim:
A method of electronically trading securities comprising: (a) electronically linking at least one computer to a host computer via a communications network; (b) transmitting a security transaction order from the at least one computer to the host computer, the security transaction order comprising instructions to sequentially buy or sell at least one named security, a quantity of the at least one named security, a limit price or current market price at which an exchange of the at least one named security should be transacted, and a change in price for a follow-on reverse order, wherein the reverse order is a sell order if the initial transaction order is to buy at least one named security and the reverse order is a buy order if the initial transaction order is to sell at least on named security; (c) the host computer executing the initial security transaction order of the at least one named security at the specified limit price or current market price for the specified quantity; (d) the host computer automatically determining the value of the follow-on reverse transaction order by calculating the change in price as specified by the initial transaction order; (e) upon executing the initial security transaction order, the host computer automatically executing a follow-on reverse transaction order for the at least one named security at the change in price specified by the initial security transaction order, such that the follow-on reverse transaction order does not require manual reentry.