Carvajal, Andrés; Polemarchakis, Herakles - In: Journal of Economic Theory 146 (2011) 4, pp. 1569-1597
In economies subject to uninsurable idiosyncratic risks, competitive equilibrium allocations are constrained inefficient: reallocations of assets support Pareto superior allocations. This is the case even if the asset market for the allocation of aggregate risks is complete.