系统性风险度量的公平性

On fairness of systemic risk measures

Finance and Stochastics · 2020
被引 1
人大 A-ABS 3

中文导读

证明了一类系统性风险度量的对偶表示,并证明了最优分配的存在性和唯一性,该分配从单个金融机构角度看是公平的。

Abstract

Abstract In our previous paper “A unified approach to systemic risk measures via acceptance sets” ( Mathematical Finance, 2018 ), we have introduced a general class of systemic risk measures that allow random allocations to individual banks before aggregation of their risks. In the present paper, we prove a dual representation of a particular subclass of such systemic risk measures and the existence and uniqueness of the optimal allocation related to them. We also introduce an associated utility maximisation problem which has the same solution as the minimisation problem associated to the systemic risk measure. In addition, the optimiser in the dual formulation provides a risk allocation which is fair from the point of view of the individual financial institutions. The case with exponential utilities which allows explicit computation is treated in detail.

系统性风险度量对偶表示公平风险分配指数效用