BAI, ZHIDONG and LIU, HUIXIA and WONG, WING-KEUNG
(2016):
*Making Markowitz's Portfolio Optimization Theory Practically Useful.*

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## Abstract

The traditional estimated return for the Markowitz mean-variance optimization has been demonstrated to seriously depart from its theoretic optimal return. We prove that this phenomenon is natural and the estimated optimal return is always $\sqrt{\gamma}$ times larger than its theoretic counterpart where $\gamma = \frac 1{1-y}$ with $y$ as the ratio of the dimension to sample size. Thereafter, we develop new bootstrap-corrected estimations for the optimal return and its asset allocation and prove that these bootstrap-corrected estimates are proportionally consistent with their theoretic counterparts. Our theoretical results are further confirmed by our simulations, which show that the essence of the portfolio analysis problem could be adequately captured by our proposed approach. This greatly enhances the practical uses of the Markowitz mean-variance optimization procedure.

Item Type: | MPRA Paper |
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Original Title: | Making Markowitz's Portfolio Optimization Theory Practically Useful |

English Title: | Making Markowitz's Portfolio Optimization Theory Practically Useful |

Language: | English |

Keywords: | Optimal Portfolio Allocation, Mean-Variance Optimization; Large Random Matrix; Bootstrap Method |

Subjects: | C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General > C13 - Estimation: General G - Financial Economics > G1 - General Financial Markets > G11 - Portfolio Choice ; Investment Decisions |

Item ID: | 74360 |

Depositing User: | Wing-Keung Wong |

Date Deposited: | 08 Oct 2016 14:18 |

Last Modified: | 26 Sep 2019 09:04 |

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URI: | https://mpra.ub.uni-muenchen.de/id/eprint/74360 |