A New Benchmark for Dynamic Mean-Variance Portfolio Allocations

48 Pages Posted: 26 Mar 2020 Last revised: 3 Apr 2020

Date Written: April 1, 2020

Abstract

We propose a new methodology to implement unconditionally optimal dynamic mean-variance portfolios. We model portfolio allocations using an auto-regressive process in which the shock to the portfolio allocation is the gradient of the investor's realized certainty equivalent with respect to the allocation. Our methodology can accommodate transaction costs, short-selling and leverage constraints, and a large number of assets. In out-of-sample tests using equity portfolios, long-short factors, government bonds, and commodities, we find that its risk-adjusted performance, net of transaction costs, is on average more than double that of other benchmark allocations.

Keywords: Portfolio Choice, Mean-Variance, Asset Allocation, Estimation Risk

JEL Classification: G11, C58

Suggested Citation

Langlois, Hugues, A New Benchmark for Dynamic Mean-Variance Portfolio Allocations (April 1, 2020). Available at SSRN: https://ssrn.com/abstract=3548138

Hugues Langlois (Contact Author)

HEC Paris - Finance Department ( email )

France

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