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Morningstar Ratings, Mutual Fund Flows and Performance: Investigating the Swedish Domestic Fund Market
KTH, School of Industrial Engineering and Management (ITM).
2021 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Morningstar Ratings, fondflöden och prestanda (Swedish)
Abstract [en]

Morningstar ratings are a popular way for investors to compare mutual funds. This thesis focuses on Swedish domestic equity funds. The relation of Morningstar ratings and fund flows was studied. Additionally, the short-term performance predictability using star ratings was investigated.

This study found that top rated funds using Morningstar ratings received a higher fraction of positive fund flows compared to top rated funds ranked using past returns, Sharpe ratio, or Carhart's four-factor alpha. This provides some evidence towards Swedish investors using Morningstar ratings over other measures when selecting mutual funds.

Additionally, all four measures performed poorly when used to predict one-, three- and twelve-month future fund flows, with no model being able to explain more than 7% of the variance in the data (measured in adjusted R-squared).

Finally, the predictive power of Morningstar rating in respect to future outperformance (measured in Carhart's four-factor alpha) was evaluated. While all star ratings were statistically significant predictors, no model managed to explain more than 17% of the data's variance. Thus, Morningstar ratings were not found to be a good predictor of future outperformance.

Abstract [sv]

Morningstar Ratings är ett populärt sätt för investerare att jämföra fonder. Denna uppsats fokuserar på svenska fonder som investerar på den svenska aktiemarknaden. Sambandet mellan Morningstar Ratings och fondflöden studerades. Även förmågan att på kort sikt förutsäga fonders prestation genom att använda deras Morningstar Rating undersöktes.

Denna studie fann att topprankade fonder utifrån Morningstars prestationsmått fick en högre andel av positiva inflöden än om fonderna rankades efter tidigare avkastning, Sharpekvot eller Carharts alfa. Detta ger begränsat stöd till att svenska investerare använder Morningstar Ratings över andra prestationsmått vid val av fonder.

Dessutom hade alla mått låg förklarande förmåga för framtida fondflöden över en, tre och tolv månader. Ingen modell kunde förklara mer än 7% av variansen i fondflödena (mätt i justerad R2).

Till sist utvärderades förmågan att förutsäga framtida (Carharts) alfa genom Morningstar Rating. Trots att Morningstar Ratings kunde anses vara statistiskt viktiga för modellen, lyckades ingen modell förklara mer än 17% av variansen i alfa. Således kunde inte Morningstar Ratings anses vara en bra prediktor för framtida alfa.

Place, publisher, year, edition, pages
2021. , p. 55
Series
TRITA-ITM-EX ; 2021:362
Keywords [en]
Morningstar Ratings, Mutual Funds, Fund Flows, Performance, Four-Factor Alpha, Sharpe Ratio
Keywords [sv]
Morningstar Ratings, Fonder, Fondflöden, Prestanda, Carharts Alfa, Alfa, Sharpekvot
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-300048OAI: oai:DiVA.org:kth-300048DiVA, id: diva2:1586885
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Examiners
Available from: 2021-08-23 Created: 2021-08-23 Last updated: 2022-06-25Bibliographically approved

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