Optimal risk sharing in insurance networks

Abstract

We discuss the impact of risk sharing and asset–liability management on capital requirements. Our analysis contributes to the evaluation of the merits and deficiencies of different risk measures. In particular, we highlight that the class of V@R-based risk measures allows for a substantial reduction of the total capital requirement in corporate networks that share risks between entities. We provide case studies that complement previous theoretical results and demonstrate their practical relevance. For large networks, optimal asset–liability management is often contrary to those strategies that are desirable from a regulatory point of view.