Journal of Korea Port Economic Association (한국항만경제학회지)

The Korea Port Economic Association (한국항만경제학회)
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An Analysis on the Asymmetric Time Varying Spillover Effect between Capesize and Panamax Markets

케이프사이즈와 파나막스 시장간의 비대칭 시간가변 파급효과에 관한 분석

  • 정상국 (인제대학교 인문사회과학대학 국제경상학부/동북아경제연구소)
  • Received : 2011.07.26
  • Accepted : 2011.09.27
  • Published : 2011.09.30
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Abstract

This article investigates the interrelationships in daily returns using fractionally integrated error correction term and volatilities using constant conditional correlation and dynamic conditional correlation GARCH with asymmetries between Capesize and Panamax markets. Our findings are as follows. First, for the fractionally cointegrated error correction model, there is a unidirectional relationship in returns from the Panamax market to the Capesize market, but a bidirectional causal relationship prevails for the traditional error correction models. Second, the coefficients for the error correction term are all statistically significant. Of particular interest are the signs of the estimates for the error correction term, which are all negative for the Capesize return equation and all positive for the Panamax return. Third, there are bidirectional volatility spillovers between both markets and the direction of the information flow seems to be stronger from Panamax to Capesize. Fourth, the coefficients for the asymmetric term are all significantly positive in the Capesize market, but the Panamax market does not have a significant effect. However, the coefficients for the asymmetric term are all significant, implying that the leverage effect does exist in the Capesize and Panamax markets.

이 연구는 케이프사이즈 시장과 파나막스 시장간의 비대칭 시간 가변 파급효과를 분석하기 위해서 조건부 평균에 전통적인 공적분항과 부분공적분항을 고려하고 있고, 조건부 분산에 레버리지 효과를 고려한 고정상관관계 GARCH와 동적상관관계 GARCH 모형을 이용하였다. 연구결과는 다음과 같다. 첫째, 두 시장간의 선-후행관계에 대해서 부분공적분항을 고려한 결과로부터 전기의 케이프사이즈 가격은 파나막스 시장가격에 유의적으로 정(+)의 영향을 미치고, 일반적인 공적분항을 고려하는 경우 두 시장간의 선-후행효과는 모두 유의적으로 정(+)의 효과를 갖는 것으로 나타났다. 둘째, 두 시장간의 장기적인 균형관계가 성립하지 않는 경우, 개별시장은 어떻게 반응하는가를 나타내는 오차항의 계수는 모두 통계적으로 유의적이고, 케이프사이즈 시장에서는 모두 음(-)의 값을 가지고 파나막스 시장의 경우에는 모두 정(+)의 값을 갖는 것으로 나타났다. 셋째, 두 시장간의 변동성의 파급효과에 대해서는 모든 모형에서 서로 영향을 주고 받는 것으로 나타났고, 통계적으로 유의하게 나타났다. 넷째, 레버리지 효과는 케이프사이즈 시장에서는 모두 유의적으로 정(+)의 값을 가지나, 파나막스 시장에서는 모두 통계적으로 유의적인 결과를 얻지 못하였다. 그러나 두 시장 모두에서 비대칭의 효과는 통계적으로 유의적인 것으로 나타나고 있다.

Keywords

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