A One-Sided Refined Symmetrized Data Aggregation Approach to Robust Mutual Fund Selection

Long Feng, Binghui Liu and Yanyuan Ma

Journal of Business & Economic Statistics, 2024, vol. 42, issue 1, 257-271

Abstract: We consider the problem of identifying skilled funds among a large number of candidates under the linear factor pricing models containing both observable and latent market factors. Motivated by the existence of non-strong potential factors and diversity of error distribution types of the linear factor pricing models, we develop a distribution-free multiple testing procedure to solve this problem. The proposed procedure is established based on the statistical tool of symmetrized data aggregation, which makes it robust to the strength of potential factors and distribution type of the error terms. We then establish the asymptotic validity of the proposed procedure in terms of both the false discovery rate and true discovery proportion under some mild regularity conditions. Furthermore, we demonstrate the advantages of the proposed procedure over some existing methods through extensive Monte Carlo experiments. In an empirical application, we illustrate the practical utility of the proposed procedure in the context of selecting skilled funds, which clearly has much more satisfactory performance than its main competitors.

Date: 2024
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DOI: 10.1080/07350015.2023.2174549

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