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Nonlinear portfolio selection using approximate parametric Value-at-Risk

Xueting Cui, Shushang Zhu, Xiaoling Sun and Duan Li

Journal of Banking & Finance, 2013, vol. 37, issue 6, 2124-2139

Abstract: As the skewed return distribution is a prominent feature in nonlinear portfolio selection problems which involve derivative assets with nonlinear payoff structures, Value-at-Risk (VaR) is particularly suitable to serve as a risk measure in nonlinear portfolio selection. Unfortunately, the nonlinear portfolio selection formulation using VaR risk measure is in general a computationally intractable optimization problem. We investigate in this paper nonlinear portfolio selection models using approximate parametric Value-at-Risk. More specifically, we use first-order and second-order approximations of VaR for constructing portfolio selection models, and show that the portfolio selection models based on Delta-only, Delta–Gamma-normal and worst-case Delta–Gamma VaR approximations can be reformulated as second-order cone programs, which are polynomially solvable using interior-point methods. Our simulation and empirical results suggest that the model using Delta–Gamma-normal VaR approximation performs the best in terms of a balance between approximation accuracy and computational efficiency.

Keywords: Portfolio selection; Value-at-Risk; European option; Delta–Gamma approximation; Second-order cone programming (search for similar items in EconPapers)
JEL-codes: G11 G32 C61 (search for similar items in EconPapers)
Date: 2013
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