Preprint Article Version 1 NOT YET PEER-REVIEWED

The Choice of the Time Horizon during Estimation of the Unconditional Stock Beta

Version 1 : Received: 8 July 2016 / Approved: 8 July 2016 / Online: 8 July 2016 (08:35:15 CEST)

A peer-reviewed article of this Preprint also exists.

Dadakas, D.; Karpetis, C.; Fassas, A.; Varelas, E. Sectoral Differences in the Choice of the Time Horizon during Estimation of the Unconditional Stock Beta. Int. J. Financial Stud. 2016, 4, 25. Dadakas, D.; Karpetis, C.; Fassas, A.; Varelas, E. Sectoral Differences in the Choice of the Time Horizon during Estimation of the Unconditional Stock Beta. Int. J. Financial Stud. 2016, 4, 25.

Journal reference: Int. J. Financial Stud. 2016, 4, 25
DOI: 10.3390/ijfs4040025

Abstract

The stock beta coefficient literature extensively discusses the proper methods for the estimation of beta as well as its use in asset valuation. However, there are relatively few references with respect to the appropriate time horizon that investors should utilize when evaluating the risk-return relationship of a stock. We examine the appropriate time horizon for beta estimation differentiating our results by sector according to the Industry Classification Benchmark. We employ data from the NYSE and we estimate varying lengths of beta employing data from 30 to 250 trading days. The constructed beta series is then examined for the presence of breaks using the endogenous structural break literature. Results show evidence against the use of betas that employ more than 90 trading days of data provisional to the sector under study.

Subject Areas

Stock Beta, Endogenous Structural Breaks, Time Horizon

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