System and Method for Exchanging Assets in a Network - A first negotiation (142) is performed between a first agent (112) and a second agent (122). Responsive to the outcome of the first negotiation (142), a first asset is selectively purchased from the second agent (122). A second negotiation (148) is performed with a third agent (136), and, responsive to the outcome of the second negotiation (148), a second asset controlled by the first agent (112) is selectively sold to the third agent (136).