Patent ID: 7324967

Claim:
A method, implemented in and across an electronic network, for offering a multi-class instrument, comprising the steps of: storing, within a first computer operated by an underwriter, an initial offer price and an initial offer amount related to at least two classes of the multi-class instrument, the at least two classes being different from each other and separately saleable; displaying, on at least one second computer, the offer price and offer amount of one of the classes; receiving, at the first computer, at least one bid in response to the initial offer price and offer amount on the at least second computer; modifying, in the first computer, an initial offer price and an initial offer amount of another of the classes of the multi-class instrument based on the bid received in response to the initial offer price and offer amount of said one of the classes on the at least one second computer, and displaying on at least a third computer the initial offer price and offer amount of the said another of the classes of the multi-class instrument, accepting the bid received in response to the initial offer price and offer amount on the at least one second computer; and indicating to the underwriter an amount of underlying collateral needed to underwrite the bid received in response to the initial offer price and offer amount on the at least one second computer and the initial offer price and offer amount of the said another of the classes of the multi-class instrument, wherein the underlying collateral has a form different from either of the at least two classes, and wherein the underlying collateral is used to collateralized both of the at least two classes.