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Gain-Loss Hedging and Cumulative Prospect Theory

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  • Lorenzo Bastianello
  • Alain Chateauneuf
  • Bernard Cornet

Abstract

Two acts are comonotonic if they yield high payoffs in the same states of nature. The main purpose of this paper is to derive a new characterization of Cumulative Prospect Theory (CPT) through simple properties involving comonotonicity. The main novelty is a concept dubbed gain-loss hedging: mixing positive and negative acts creates hedging possibilities even when acts are comonotonic. This allows us to clarify in which sense CPT differs from Choquet expected utility. Our analysis is performed under the simpler case of (piece-wise) constant marginal utility which allows us to clearly separate the perception of uncertainty from the evaluation of outcomes.

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  • Lorenzo Bastianello & Alain Chateauneuf & Bernard Cornet, 2023. "Gain-Loss Hedging and Cumulative Prospect Theory," Papers 2304.14843, arXiv.org.
    • Handle: RePEc:arx:papers:2304.14843
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    References listed on IDEAS

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