The Effects of Market Properties on Portfolio Diversification in the Korean and Japanese Stock Markets

Cheoljun Eom, Jongwon Park, Jung, Woo-Sung, Taisei Kaizoji () and Yong H. Kim

Quantitative Finance Papers from arXiv.org

Abstract: In this study, we have investigated empirically the effects of market properties on the degree of diversification of investment weights among stocks in a portfolio. The weights of stocks within a portfolio were determined on the basis of Markowitz's portfolio theory. We identified that there was a negative relationship between the influence of market properties and the degree of diversification of the weights among stocks in a portfolio. Furthermore, we noted that the random matrix theory method could control the properties of correlation matrix between stocks; this may be useful in improving portfolio management for practical application.

Date: 2009-02

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Persistent link: http://EconPapers.repec.org/RePEc:arx:papers:0902.3836

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