Optimal frequency of portfolio evaluation in a choice experiment with ambiguity and loss aversion

We estimate a structural model using data from a novel experiment investigating how investors' preferred frequency of portfolio evaluations balance the opposing effects of ambiguity and loss aversion. Investors in the experiment face initial ambiguity concerning return distributions for an asset. They observe draws from the true return distribution of the asset, allowing them to reduce their ambiguity through time. We exploit portfolio choices and stated beliefs over possible return distributions to estimate preferences and ambiguity updating rules. We find that 70% of investors would opt for a high frequency of portfolio evaluations, reflecting the dominating effect of ambiguity aversion over loss aversion. (C)2020 Elsevier B.V. All rights reserved.

Automated summary

This study estimates a structural model using experimental data to investigate investors' preferences regarding the frequency of portfolio evaluations, as well as how ambiguity and loss aversion interact. The findings indicate that 70% of investors prefer a high frequency of evaluations, highlighting the dominant effect of ambiguity aversion.