The Korean Journal of Applied Statistics (응용통계연구)

The Korean Statistical Society (한국통계학회)
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Dynamic Integration and Causal Relationships between Stock Price Indexes

주가지수간의 동태적 통합 및 인과관계 분석

  • Published : 2004.07.01
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Abstract

It is known that the domestic and the U.S. stock prices tend to move together as those markets are closely interrelated. In this study, cointegration and causal relationships among the four stock price indexes of KOSPI, KOSDAQ, DOWJONES and NASDAQ are carefully investigated for the period of declining stock prices in the long run. When all indexes move in a similar fashion, cointegration does not exist and the causal linkages between the domestic and the U.S. stock prices appear relatively complex. On the other hand, when the domestic and the V.S. stock prices move in a different manner, cointegration exists and the causal relationships appear relatively simple. NASDAQ is apparently found to lead the domestic stock market in both periods, which is consistent with the actual market situation when the If industry is under recession.

국내외 시장간에 정보의 이동이 신속해지고 유사 시장간에 상호 연관성이 심화되면서 한미간 주가동조화현상은 강화된 것으로 알려져 있다. 본 연구에서는 한미 증시간에 어떠한 역학관계가 존재하는가를 총체적으로 결정해 보았다. 분석 결과 주가가 전반적으로 비슷한 동향을 보이는 시기에는 한미 증시간의 인과관계가 상대적으로 복잡한 반면, 한미 간의 주가가 상이 한 동향을 보이는 시기에는 인과관계가 단순한 것으로 나타났다. 특히 나스닥지수로 부터 국내 주가지수로의 인과관계가 뚜렷이 존재하는 것으로 판명되어 IT산업 불황기에 침체에 빠진 국내 증시가 첨단산업이 주축을 이룬 나스닥시장의 동향에 민감한 현실이 그대로 입증되고 있다.

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