Measurement Errors of Expected Returns Proxies and the Implied Cost of Capital

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Measurement Errors of Expected Returns Proxies and the Implied Cost of Capital

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Title: Measurement Errors of Expected Returns Proxies and the Implied Cost of Capital
Author: Wang, Charles Chang-Yi
Citation: Wang, Charles C.Y. "Measurement Errors of Expected Returns Proxies and the Implied Cost of Capital." Harvard Business School Working Paper, No. 13–098, May 2013.
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Abstract: This paper presents a methodology to study implied cost of capital's (ICC) measurement errors, which are relatively unstudied empirically despite ICCs' popularity as proxies of expected returns. By applying it to the popular implementation of ICCs of Gebhardt, Lee, and Swaminathan (2001) (GLS), I show that the methodology is useful for explaining the variation in GLS measurement errors. I document the first direct empirical evidence that ICC measurement errors can be persistent, can be associated with firms' risk or growth characteristics, and thus confound regression inferences on expected returns. I also show that GLS measurement errors and the spurious correlations they produce are driven not only by analysts' systematic forecast errors but also by functional form assumptions. This finding suggests that correcting for the former alone is unlikely to fully resolve these measurement-error issues. To make robust inferences on expected returns, ICC regressions should be complemented by realized-returns regressions.
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:10647827
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