Preprint Article Version 1 NOT YET PEER-REVIEWED

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

  1. Department of Economics, University of Ioannina, Panepistimioupoli, 45510, Ioannina, Greece
  2. Department of Balcan, Slavic and Oriental Studies, University of Macedonia, 156, Egnatia str., P.O. Box 1591, 54006 Thessaloniki, Greece
  3. The University of Sheffield International Faculty, City College, 3 Leontos Sofou Street, 546 26 Thessaloniki, Greece
  4. Department of Economics, University of Macedonia, 156, Egnatia str., P.O. Box 1591, 54006 Thessaloniki, Greece
Version 1 : Received: 8 July 2016 / Approved: 8 July 2016 / Online: 8 July 2016 (08:35:15 CEST)

How to cite: Dadakas, D.; Karpetis, C.; Fassas, A.; Varelas, E. The Choice of the Time Horizon during Estimation of the Unconditional Stock Beta. Preprints 2016, 2016070010 (doi: 10.20944/preprints201607.0010.v1). Dadakas, D.; Karpetis, C.; Fassas, A.; Varelas, E. The Choice of the Time Horizon during Estimation of the Unconditional Stock Beta. Preprints 2016, 2016070010 (doi: 10.20944/preprints201607.0010.v1).

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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