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Harris, Richard D.F.; Mazibas, Murat
Journal of banking & finance, January 2013, 2013-1-00, 20130101, Volume: 37, Issue: 1Journal Article
► We evaluate alternative optimization models for portfolios of hedge funds. ► The CVaR, CDaR and Omega models offer an improvement over the mean–variance model. ► We propose a semi-parametric approach to estimation of the optimal portfolio. ► The semi-parametric approach significantly outperforms existing approaches. ► Our results are robust to the target return, risk limit and estimation sample size. In this article, we evaluate alternative optimization frameworks for constructing portfolios of hedge funds. We compare the standard mean–variance optimization model with models based on CVaR, CDaR and Omega, for both conservative and aggressive hedge fund investment strategies. In order to implement the CVaR, CDaR and Omega optimization models, we propose a semi-parametric methodology, which is based on extreme value theory, copula and Monte Carlo simulation. We compare the semi-parametric approach with the standard, non-parametric approach, used to compute CVaR, CDaR and Omega, and the benchmark parametric approach, based on both static and dynamic mean–variance optimization. We report two main findings. The first is that the CVaR, CDaR and Omega models offer a significant improvement in terms of risk-adjusted portfolio performance over the parametric mean–variance model. The second is that semi-parametric estimation of the CVaR, CDaR and Omega models offers a very substantial improvement over non-parametric estimation. Our results are robust to the choice of target return, risk limit and estimation sample size.
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