Olivella, Pau; Vera-Hernandez, Marcos - In: SERIEs : Journal of the Spanish Economic Association 1 (2010) 3, pp. 305-323
When health plans compete under adverse selection, the competitive equilibrium set of contracts is unique. However, the allocation of these contracts among health plans is undetermined. We show that three health plans suffice to sustain an equilibrium where each health plan offers a single...
