This paper challenges the earlier work of Fu (2009). He claims to find a positive empirical relationship between risk and return using a sophisticated (EGARCH) idiosyncratic volatility measure for risk. Fu’s result flies directly in the face of the large number of studies that find strong evidence for a low-volatility anomaly.
Guo, Kassa and Ferguson resolve this inconsistency by showing that the findings of Fu (2009) can be fully explained by a serious flaw in his research methodology, namely look-ahead bias, i.e. the use of data that would not have been available during the period being analyzed. This example illustrates the importance of studies that attempt to validate the findings of others and of conducting out-of-sample tests, even for studies that have been published in top academic journals.
The information contained in the website is solely intended for professional investors. Some funds shown on this website fall outside the scope of the Dutch Act on the Financial Supervision (Wet op het financieel toezicht) and therefore do not (need to) have a license from the Authority for the Financial Markets (AFM).
The funds shown on this website may not be available in your country. Please select your country website (top right corner) to view the products that are available in your country.
Neither information nor any opinion expressed on the website constitutes a solicitation, an offer or a recommendation to buy, sell or dispose of any investment, to engage in any other transaction or to provide any investment advice or service. An investment in a Robeco product should only be made after reading the related legal documents such as management regulations, prospectuses, annual and semi-annual reports, which can be all be obtained free of charge at this website and at the Robeco offices in each country where Robeco has a presence.