Digest Finance

Evaluating the Applicability of Modified Beta Coefficient in the Russian Stock Market

Vol. 24, Iss. 4, DECEMBER 2019

PDF  Article PDF Version

Received: 21 July 2017

Received in revised form: 4 October 2017

Accepted: 12 October 2017

Available online: 25 December 2019


JEL Classification: E44, E47

Pages: 424–437


Fedorova E.A. Financial University under Government of Russian Federation, Moscow, Russian Federation

ORCID id: not available

Guzovskii Ya.E. Financial University under Government of Russian Federation, Moscow, Russian Federation

ORCID id: not available

Lukashenko I.V. Financial University under Government of Russian Federation, Moscow, Russian Federation

ORCID id: not available

Subject The article addresses the applicability of modified beta coefficient in the Russian stock market. A modified Capital Asset Pricing Model is a tool enabling to obtain reliable data for investment appraisal. The beta coefficient in the model considers the effect of non-traded risk on the asset.
Objectives We aim to identify the modified beta coefficient for domestic companies, compare the modified and traditional beta coefficients, conduct an empirical study to determine the applicability of modified beta coefficient in the Russian stock market.
Methods The survey sample includes data on 260 Russian companies listed on the Moscow Exchange for the period from 2010 to 2016. Based on the Amihud illiquidity measure, the companies' shares were divided into 5 quantiles to calculate the model parameters. The shares in the upper quantile served as a benchmark for non-traded assets, and the shares in all other quantiles as a benchmark for traded assets in the market.
Results We found that the more imperfect the financial market is, the bigger is the gap between the modified and traditional beta, especially, when the traditional beta value is greater than unity. In addition, the graph of beta coefficients distribution showed that the distribution of modified betas differed noticeably from the distribution of traditional betas which tends to unity.
Conclusions The use of traditional beta coefficient is limited in practice, moreover, when creating a portfolio, investors should use a modified beta to obtain more accurate and reliable data, especially for imperfect financial markets.

Keywords: Capital Asset Pricing Model, beta coefficient, imperfect market, non-traded asset, stock market


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