On Fairness of Systemic Risk Measures

Francesca Biagini, Jean-Pierre Fouque, Marco Frittelli and Thilo Meyer-Brandis

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Abstract: In our previous paper, "A Unified Approach to Systemic Risk Measures via Acceptance Set" (\textit{Mathematical Finance, 2018}), we have introduced a general class of systemic risk measures that allow for random allocations to individual banks before aggregation of their risks. In the present paper, we prove the 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 maximization problem which has the same optimal solution as the systemic risk measure. In addition, the optimizer in the dual formulation provides a \textit{risk allocation} which is fair from the point of view of the individual financial institutions. The case with exponential utilities which allows for explicit computation is treated in details.

Date: 2018-03, Revised 2019-04
New Economics Papers: this item is included in nep-ban, nep-cba and nep-rmg
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