The determinants of systematic risk: A firm lifecycle perspective

Jimmy Saravia (), Carlos S. García and Paula M. Almonacid

International Journal of Finance & Economics, 2021, vol. 26, issue 1, 1037-1049

Abstract: This paper investigates how systematic risk varies over the lifecycle of the firm. If market equity beta is determined by firm characteristics as the literature on the determinants of systematic risk holds, and if those characteristics change over the lifecycle of the firm following a definite pattern as firm lifecycle theory suggests, then market equity beta should change over the lifecycle of the firm following a predictable pattern. Our findings indicate that holding other determinants of beta constant, the coefficient of systematic risk tends to fall in magnitude following a nonlinear pattern as firm age increases. In addition, we find that the volatility of market equity beta also tends to fall over the lifecycle of the firm. We argue that our main variable of concern, that is, firm age, proxies for variables that have hitherto been omitted in the literature on the determinants of systematic risk. In particular, we maintain that firm age proxies for the mispricing propensity that young firms lose as they mature. This research is useful for both practitioners and researchers in that it may suggest ways to adjust empirical estimates of systematic risk. In addition, our results are important for research on beta forecasting as they show that the length of the stationary interval of betas is shorter for young companies, and therefore it is necessary to take into account this time varying characteristic in the estimation process in order to improve the beta forecasting.

Date: 2021
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Citations: View citations in EconPapers (2)

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https://doi.org/10.1002/ijfe.1834

Related works:
Working Paper: The Determinants of Systematic Risk: A Firm Lifecycle Perspective (2016)
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