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Real estate portfolio construction and estimation risk

Stephen Lee (School of Business, Centre for Real Estate Research (CRER), The University of Reading, Reading, UK)
Simon Stevenson (Department of Banking and Finance, Graduate School of Business, University College Dublin, Blackrock, Ireland)

Journal of Property Investment & Finance

ISSN: 1463-578X

Publication date: 1 June 2005

Abstract

Purpose

–

The use of modern portfolio theory (MPT) in the construction real estate portfolios has two serious limitations when used in an ex ante framework: the intertemporal instability of the portfolio weights; and the sharp deterioration in performance of the optimal portfolios outside the sample period used to estimate asset mean returns. Both problems can be traced to wide fluctuations in sample means. Aims to prove that the use of a procedure that ignores the estimation risk due to the uncertain in mean returns is likely to produce sub‐optimal results in subsequent periods.

Design/methodology/approach

–

This study extends previous ex ante‐based studies by evaluating ex post optimal portfolio allocations in subsequent test periods by using methods that have been proposed to reduce the effect of measurement error on optimal portfolio allocations.

Findings

–

While techniques designed to handle estimation risk in capital market studies have yielded promising results, they are not completely successful in improving out‐of‐sample performance in this case. It is hypothesised that such results are due to the cyclical nature of property and that the contrarian and mean‐reversion effects picked up in studies of stocks and bonds are not captured when an asset such as direct property is examined. This conclusion is also supported by the strong performance of the tangency portfolios, and in particular the classical unadjusted Sharpe portfolio, over the shorter horizons, which would be consistent with a cyclical momentum effect.

Originality/value

–

The results suggest that the consideration of the issue of estimation risk is crucial in the use of MPT in developing a successful real estate portfolio strategy.

Keywords

  • Optimization techniques
  • Portfolio investment
  • Risk management

Citation

Lee, S. and Stevenson, S. (2005), "Real estate portfolio construction and estimation risk", Journal of Property Investment & Finance, Vol. 23 No. 3, pp. 234-253. https://doi.org/10.1108/14635780510599458

Download as .RIS

Publisher

:

Emerald Group Publishing Limited

Copyright © 2005, Emerald Group Publishing Limited

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