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Estimating Risk Parameters

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  • Aswath Damodaran

Abstract

Over the last three decades, the capital asset pricing model has occupied a central and often controversial place in most corporate finance analysts’ tool chests. The model requires three inputs to compute expected returns – a riskfree rate, a beta for an asset and an expected risk premium for the market portfolio (over and above the riskfree rate). Betas are estimated, by most practitioners, by regressing returns on an asset against a stock index, with the slope of the regression being the beta of the asset. In this paper, we attempt to show the flaws in regression betas, especially for companies in emerging markets. We argue for an alternate approach that allows us to estimate a beta that reflect the current business mix and financial leverage of a firm.

Suggested Citation

  • Aswath Damodaran, 1999. "Estimating Risk Parameters," New York University, Leonard N. Stern School Finance Department Working Paper Seires 99-019, New York University, Leonard N. Stern School of Business-.
    • Handle: RePEc:fth:nystfi:99-019
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    File URL: http://www.stern.nyu.edu/fin/workpapers/papers99/wpa99019.pdf
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    Cited by:

    1. Copiello, Sergio & Gabrielli, Laura & Bonifaci, Pietro, 2017. "Evaluation of energy retrofit in buildings under conditions of uncertainty: The prominence of the discount rate," Energy, Elsevier, vol. 137(C), pages 104-117.
    2. Moser, Philipp & Isaksson, Olov H.D. & Seifert, Ralf W., 2017. "Inventory dynamics in process industries: An empirical investigation," International Journal of Production Economics, Elsevier, vol. 191(C), pages 253-266.
    3. Johannes K. Dreyer & Peter A. Schmid & Victoria Zugrav, 2018. "Individual, Systematic and Systemic Risks in the Danish Banking Sector," Czech Journal of Economics and Finance (Finance a uver), Charles University Prague, Faculty of Social Sciences, vol. 68(4), pages 320-350, September.
    4. Suarez, Ronny, 2014. "Splitting up Beta’s change," MPRA Paper 58369, University Library of Munich, Germany.
    5. Valentina ZOZULYA & Evgeny SOKOLOV & Evgeny KOSTYRIN & Sergey KOROLEV, 2021. "The effectiveness of applying beta-coefficient modifications when calculating returns on shares in Russian companies," Eastern Journal of European Studies, Centre for European Studies, Alexandru Ioan Cuza University, vol. 12, pages 31-52, June.
    6. Brockman, Paul & Guo, Tao & Vivero, Maria Gabriela & Yu, Wayne, 2022. "Is idiosyncratic risk priced? The international evidence," Journal of Empirical Finance, Elsevier, vol. 66(C), pages 121-136.

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