 Star power: the effect of Morningstar ratings on mutual fund flowsDiane Del Guercio and Paula Tkac No 2001-15, FRB Atlanta Working Paper from Federal Reserve Bank of Atlanta Abstract: Morningstar, Inc., has been hailed in both academic and practitioner circles as having the most influential rating system in the mutual fund industry. We investigate Morningstar's influence by estimating the value of a star in terms of the asset flow it generates for the typical fund. We use event-study methods on a sample of 3,388 domestic equity mutual funds from November 1996 to October 1999 to isolate the 'Morningstar effect' from other influences on fund flow. ; We separately study initial rating events, whereby a fund is rated for the first time on its 36-month anniversary, and rating change events. An initial five-star rating results in average six-month abnormal flow of $26 million, or 53 percent above normal expected flow. Following rating changes, we find economically and statistically significant abnormal flow in the expected direction, positive for rating upgrades and negative for rating downgrades. Furthermore, we observe an immediate flow response, suggesting that some investors vigilantly monitor this information and view the rating change as 'new' information on fund quality. Overall, our results indicate that Morningstar ratings have unique power to affect asset flow. Keywords: Mutual; funds (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:fip:fedawp:2001-15 Ordering information: This working paper can be ordered from Access Statistics for this paper More papers in FRB Atlanta Working Paper from Federal Reserve Bank of Atlanta Contact information at EDIRC. |
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