Beta is in the Eye of the Beholder
William F. Shadwick
October 11, 2010
Journal of Investment Consulting, Vol. 11, No. 1, pp. 18-28, 2010
In Cascon and Shadwick (2006) we extensively discussed the use of models in finance. We pointed out how ideas that have become generally accepted often depend on assumptions that, as time passes, are likely to be unstated or even forgotten entirely, with potentially significant consequences. In this article we will use the same philosophy to examine the conventional model for alpha and beta in investment returns. As in Cascon and Shadwick (2007), we find here that the assumption that standard deviation is an appropriate proxy for risk plays a large role.
Number of Pages in PDF File: 11
Keywords: Standard Deviation, Standard Dispersion, Alpha, Beta
JEL Classification: G11, G14
Date posted: November 3, 2010
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