Volatility Spillover Structure of Stock and Foreign Exchange Market between Korea, Japan, and Hong Kong

Volatility Spillover Structure of Stock and Foreign Exchange Market between Korea, Japan, and Hong Kong

Masayuki Susai (Nagasaki University, Japan)
Copyright: © 2006 |Pages: 21
DOI: 10.4018/978-1-59140-881-9.ch009
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Abstract

Highly developed IT technology can be the source of volatility spillover between markets located in other countries. In this chapter, we investigate the interrelationship between stock returns in North East Asian countries and the effect of foreign exchange rate volatility on the interrelationship between stock returns. We bring out clear simultaneous interrelationship between stock return and foreign exchange volatility. Focusing on covariance of each asset returns, if we do not take foreign exchange rate volatility into account when we evaluate our international portfolio, the portfolio risk might be underevaluated. The analysis shows that foreign exchange market turbulence might be accompanied by increase in covariance between stock returns. Just after the Asian currency crisis, the relationship between stock returns and foreign exchange turbulence might have changed. For managing international portfolio risk, we should be aware of foreign exchange risk and structural change in covariance between stock returns.

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