Betas, market weights and the cost of capital: The example of Nokia and small cap stocks on the Helsinki Stock Exchange
This paper examines the relationship between the market weight of a single stock and the betas of both that stock and the residual portfolio. Theory suggests that the effect of such a large weight is to significantly reduce the beta of the residual portfolio, and it may also significantly raise the beta of the single stock. Furthermore, substantial changes in a stock's market weight will also affect the market risk premium. These results have important implications for cost of capital estimates in markets where there are one or a few large firms. To illustrate the effect of market weight on beta and the cost of capital, the analysis considers the recent case of Nokia and the Helsinki Stock Exchange during a period when Nokia's market weight ranged from 9% to 72%.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Solnik, Bruno H., 1974. "An equilibrium model of the international capital market," Journal of Economic Theory, Elsevier, vol. 8(4), pages 500-524, August.
- Kallunki, J-P. & Martikainen, T., 1997. "The covariance-factor structure of daily returns in a thinly traded stock market," Journal of Multinational Financial Management, Elsevier, vol. 7(2), pages 113-125, June.
- Geert Bekaert & Campbell R. Harvey, 1994.
"Time-Varying World Market Integration,"
NBER Working Papers
4843, National Bureau of Economic Research, Inc.
- Roll, Richard, 1977. "A critique of the asset pricing theory's tests Part I: On past and potential testability of the theory," Journal of Financial Economics, Elsevier, vol. 4(2), pages 129-176, March.
- John T. Scruggs, 1998. "Resolving the Puzzling Intertemporal Relation between the Market Risk Premium and Conditional Market Variance: A Two-Factor Approach," Journal of Finance, American Finance Association, vol. 53(2), pages 575-603, 04.
- Graham, John R. & Harvey, Campbell R., 2001. "The theory and practice of corporate finance: evidence from the field," Journal of Financial Economics, Elsevier, vol. 60(2-3), pages 187-243, May.
- Merton, Robert C, 1973. "An Intertemporal Capital Asset Pricing Model," Econometrica, Econometric Society, vol. 41(5), pages 867-887, September.
- William F. Sharpe, 1964. "Capital Asset Prices: A Theory Of Market Equilibrium Under Conditions Of Risk," Journal of Finance, American Finance Association, vol. 19(3), pages 425-442, 09.
- Harvey, Campbell R, 1991. " The World Price of Covariance Risk," Journal of Finance, American Finance Association, vol. 46(1), pages 111-157, March.
- Lally, Martin & Swidler, Steve, 2003. "The effect of an asset's market weight on its beta: implications for international markets," Journal of Multinational Financial Management, Elsevier, vol. 13(2), pages 161-170, April.
- Annukka Jokipii & Sami Vähämaa, 2006. "The Free Cash Flow Anomaly Revisited: Finnish Evidence," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 33(7-8), pages 961-978.
- Coen, Alain, 2001. "Home bias and international capital asset pricing model with human capital," Journal of Multinational Financial Management, Elsevier, vol. 11(4-5), pages 497-513, December.
When requesting a correction, please mention this item's handle: RePEc:eee:finana:v:17:y:2008:i:5:p:805-819. 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: (Dana Niculescu)
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.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with 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 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.