You Learn When It Hurts: Evidence in the Mutual Fund Industry

Ruth Gimeno, José Luis Sarto and Luis Vicente
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Ruth Gimeno: Department of Accounting and Finance, Institute on Employment, Digital Society and Sustainability (IEDIS), University of Zaragoza, 50005 Zaragoza, Spain
José Luis Sarto: Department of Accounting and Finance, Institute on Employment, Digital Society and Sustainability (IEDIS), University of Zaragoza, 50005 Zaragoza, Spain
Luis Vicente: Department of Accounting and Finance, Institute on Employment, Digital Society and Sustainability (IEDIS), University of Zaragoza, 50005 Zaragoza, Spain

JRFM, 2022, vol. 15, issue 1, 1-29

Abstract: This paper aims to contribute to the lack of research on the learning process of mutual fund markets. The empirical design is focused on the ability of the Spanish equity mutual fund industry to learn from its important errors. The choice of this industry is justified by both its relevance in the European mutual fund markets and some specific characteristics, such as the concentration and the banking control of the industry, which may affect the learning process. Our main objectives are to identify important trading errors in mutual fund management by applying three independent filters based on the relative importance of each decision, and then testing the evolution of these errors both at the industry level and at the fund family level. We apply the dynamic model of generalized method of moments (GMM), and we find an overall significant decrease in the percentage of important trading errors over time, thereby providing evidence of the global learning process of the industry. In addition, we find that a large number of fund families drive this evidence. Finally, we obtain that the family size and its dependence on financial groups do not seem to play significant roles in explaining the learning process. Therefore, we conclude that fund managers have incentives to learn from their important trading errors, in order to avoid them in future decisions, due to their serious negative consequences on fund performance, regardless of the characteristics of the families to which they belong.

Keywords: mutual funds; important trading decisions; important errors; learning process (search for similar items in EconPapers)
JEL-codes: C E F2 F3 G (search for similar items in EconPapers)
Date: 2022
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