Centro de Documentacion de Fundación MAPFRE - A Mean-preserving increase in ambiguity and portfolio choices

Notas: Sumario: This article investigates under what conditions an increase in ambiguity reduces demand for an uncertain asset (or raises demand for coinsurance). We find that the comparative statics of ambiguity and of risks ha ve structural similarities under the smooth ambiguity aversion model (Klibanoff, Marinacci, and Mukerji, 2005). The determinant condition on ambiguity preferences is analogous to that on risk preferences. However, the comparative statics have fundamental differences under the alpha-maxmin model (Ghirardato, Maccheroni, and Marinacci, 2004). When relative risk aversion is less than 1, only an increase in ambiguity, which broadens support for an investor's belief in the probability of the return distribution in the manner of a strong increase in risk, can reduce demand for an uncertain assetRegistros relacionados: En: The Journal of risk and insurance. - Nueva York : The American Risk and Insurance Association, 1964- = ISSN 0022-4367. - 03/12/2018 Volumen 85 Número 4 - diciembre 2018 , p. 993-1012Materia / lugar / evento: Cálculo actuarial Matemática del seguro Cartera de valores Inversiones Gerencia de riesgos Distribución de seguros Modelos predictivos Estadísticas Otras clasificaciones: 6

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