IDEAS home Printed from
   My bibliography  Save this paper

Time-Varying Betas and Cross-Sectional Return-Risk Relation: Evidence from the UK


  • Fraser, P.
  • Hamelink, F.
  • Hoesli, M.
  • MacGregor, B.


The seminal study by Fama and MacBeth (1973) initiated a stream of papers testing for the cross-sectional relation between return and risk. The debate wether beta is a valid measure of risk has been renimated by Fama and French (1992) and subsequent studies. Rather than focusing on exogenous variables that have a larger explanatory power than an asset's beta in cross sectional tests, we assume the matrix of variances-covariances to follow a time varying ARCH process. Using monthly data from the UK market from February 1975 to December 1996, we compare the cross sectional return-risk relations obtained with an unconditional specification for asset's betas to those obtained when the estimated betas are based on an ARCH model. We also investigate the Pettengill, Sundaram and Mathure (1995) approach, which allows a negative cross sectional return-risk relation in periods in which the market portfolio yields a negative return relative to the risk free rate. These tests are also carried out on samples pertaining to a specific month and on samples from which a particular month is removed. Our result suggest that CAPM holds in downward moving markets than in upward moving markets hence beta is a more appropriate measure of risk in bear markets.

Suggested Citation

  • Fraser, P. & Hamelink, F. & Hoesli, M. & MacGregor, B., 2000. "Time-Varying Betas and Cross-Sectional Return-Risk Relation: Evidence from the UK," Papers 2000.03, Ecole des Hautes Etudes Commerciales, Universite de Geneve-.
  • Handle: RePEc:fth:ehecge:2000.03

    Download full text from publisher

    To our knowledge, this item is not available for download. To find whether it is available, there are three options:
    1. Check below whether another version of this item is available online.
    2. Check on the provider's web page whether it is in fact available.
    3. Perform a search for a similarly titled item that would be available.


    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.

    Cited by:

    1. Don U.A. Galagedera, 2004. "A survey on risk-return analysis," Finance 0406010, EconWPA.
    2. Roland Shami & Don U.A. Galagedera, 2004. "Beta Risk and Regime Shift in Market Volatility," Finance 0406012, EconWPA.
    3. Guermat, Cherif & Freeman, Mark C., 2010. "A net beta test of asset pricing models," International Review of Financial Analysis, Elsevier, vol. 19(1), pages 1-9, January.

    More about this item



    JEL classification:

    • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
    • C20 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - General


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:fth:ehecge:2000.03. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Thomas Krichel). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.