Single-Period Markowitz Portfolio Selection,Performance Gauging,and Duality: A Variation on the Luenberger Shortage Function |
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Authors: | Briec W Kerstens K Lesourd J B |
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Institution: | (1) Maître de Conférences, JEREM, Université de Perpignan, Perpignan, France;(2) Chargé de Recherche, CNRS-LABORES, URA 362, IESEG, Lille, France;(3) Directeur de Recherche, GREQAM-CNRS, UMR 6579, Université de la Méditerranée, Aix-Marseille, France |
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Abstract: | The Markowitz portfolio theory (Ref. 1) has stimulated research into the efficiency of portfolio management. This paper studies existing nonparametric efficiency measurement approaches for single-period portfolio selection from a theoretical perspective and generalizes currently used efficiency measures into the full mean-variance space. We introduce the efficiency improvement possibility function (a variation on the shortage function), study its axiomatic properties in the context of the Markowitz efficient frontier, and establish a link to the indirect mean-variance utility function. This framework allows distinguishing between portfolio efficiency and allocative efficiency; furthermore, it permits retrieving information about the revealed risk aversion of investors. The efficiency improvement possibility function provides a more general framework for gauging the efficiency of portfolio management using nonparametric frontier envelopment methods based on quadratic optimization. |
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Keywords: | Shortage function efficient frontier risk aversion mean-variance portfolios |
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