Investment trading options having demand-based, adjustable returns, and trading exchange methods therefore

摘要

Methods and systems for conducting demand-based trading are described. A plurality of states is established with each state corresponding to at least one possible outcome of an event of economic significance. An indication of a desired payout and an indication of a selected outcome are received. The selected outcome corresponds to at least one of the plurality of states. An investment amount as a function of the selected outcome, the desired payout and a total amount invested in the plurality of states is determined by a computer. Also disclosed is receiving indication of a desired payout for a financial product and determining by computer at least one of an investment amount, a limit on the investment amount of each contingent claim in a set of at least one contingent claim as a function of the desired payout. Also disclosed is receiving indication of a desired payout for a financial product and determining by computer an investment amount and a selection outcome for each contingent claim in a set of at least one contingent claim as a function of the desired payout and a total amount invested in a demand based auction.