Rationalizing Constrained Contingent Claims

Choice of contingent claims could reflect risk aversion or pessimism. Accordingly, the underlying, but hidden preferences might fit expected utility of customary von Neumann-Morgenstern form - or more generally, comply with a Choquet integral. This paper considers constrained choice and rationalizes both sorts of attitudes. Two avenues are pursued: one invokes complete orders; the other contends with partial ordering. Emphasis is on incomplete financial markets, featuring nonlinear pricing.