On monotone completion of risk markets: Limit results for incomplete risk markets

Iman Khajepour, Geoffrey Pritchard, Danny Ralph and Golbon Zakeri

Papers from arXiv.org

Abstract: We consider a competitive market with risk-averse participants. We assume that agents' risks are measured by coherent risk measures introduced by Artzner et al. (1999). Fundamental theorems of welfare economics have long established the equivalence of competitive equilibria and system welfare optimization (see, e.g., Samuelson (1947)). These have been extended to the case of risk-averse agents with complete risk markets in Ralph and Smeers (2015). In this paper, we consider risk trading in incomplete markets and introduce a mechanism to complete the market iteratively while monotonically enhancing welfare.

Date: 2025-04
New Economics Papers: this item is included in nep-rmg
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