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Journal of Banking & Finance Vol. 113 2020

Debiased expert forecasts in continuous-time asset allocation

Mark H. Davis1; Sébastien Lleo2

1 Imperial College London · 2 NEOMA Business School

Abstract

Expert forecasts are an essential component of asset management and an important research topic. However, the effect of behavioral biases on expert forecasts is generally ignored. This paper examines the effect of biased expert forecasts on asset allocations. We find that biases have a significant impact on portfolios, explaining nearly 70% of excess risk-taking in our implementation. To address the effect of behavioral biases, we propose an integrated behavioral continuous-time portfolio selection model which we solve in closed form. The model applies general principles to identify and reduce the impact of five main behavioral biases. This paper concludes with a new personal fractional Kelly decomposition to account for the effect of opinions on the optimal asset allocation.

DOI
10.1016/j.jbankfin.2020.105759
Volume
113
Pages
105759
Language
en
Sources
openalex crossref bibtex:phds-export.bib

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