기업의 정보환경과 소유구조가 주가 동조화에 미치는 영향
A Study on the Effects of Ownership Structure and Firm Information Environment to Stock Price Synchronicity
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초록
본 연구는 기업의 소유구조와 정보환경이 주가의 동조화 현상에 어떤 영향을 미치는 가를 분석한다. 선행연구에 의하면, 주가동조화는 주가가 개별기업의 내재적 특성을 잘 반영하지 못하고, 국내외 산업정보나 시장정보에 의하여 움직일 때 주로 발생한다. 따라서 국내 자본시장에서 주가 동조화 현상을 살펴보는 것은 기업의 개별 정보가 얼마나 주가에 반영되어 있는가를 살펴보는 것이고 이를 위해, 주가의 동조화 현상에 영향을 미칠 것으로 고려되는 기업의 정보환경이나 기업의 소유구조를 검증하고자 하였다. 본 연구의 연구결과를 요약하면 다음과 같다. 첫째, 주가동조화는 외국인 투자자와 기관 투자자가 많을수록 감소되는 경향이 있으며 기업의 개인투자자들이 많을수록 증가하는 경향이 있다. 기업의 대주주들과의 관계는 유의하지 않았다. 이는 외국인 투자자나 기관투자자의 주식 거래 행위가 대상 개별기업에 대한 정보로서 시장에서 기능한다는 것을 의미한다. 둘째, 기업의 정보환경이 우세한 집단만을 따로 뽑아 분석한 결과 정보환경이 좋을수록 외국인투자자의 주가동조화 감소현상은 기관투자자 보다 더욱 더 강하고 일관적으로 나타나고 있다.
Abstract
This paper investigates the effect of largest ownership, individual ownership, foreign ownership and institutional ownership on the amount of firm-specific information incorporated into stock price synchronicity. Stock price synchronicity also has been effected by firm information environment. This study find that (1) firm's ownership structure is very different based on the firm information environment; (2) foreign ownership and institutional ownership have a negative impact on stock price synchronicity, but individual ownership has a positive impact on stock price synchronicity. In addition, the strong negative impact of foreign investors on stock price synchronicity is still strong for the subsets based on better information environment, but the impact of institutional investors are not that strong for the subsets. Thus, we can argue that foreign investors are the most important investors for informative stock price.
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