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투자자별 순매수율과 변동성: 한국 금융시장의 사례

Net Buying Ratios by Trader Types and Volatility in Korea's Financial Markets

  • Yoo, Shiyong (College of Business Administration, Chung-Ang University)
  • 투고 : 2013.11.25
  • 심사 : 2014.01.09
  • 발행 : 2014.01.31

초록

본 연구에서는 코스피200 주식시장, 선물시장, 옵션시장 등의 투자자별 거래량을 동시에 고려하여 각 시장의 변동성에 어떤 영향을 미치는지를 알아보았다. 실증분석결과를 요약하면 다음과 같다. 첫째, 주식시장 및 선물시장의 변동성은 다른 시장의 거래정보에 의해서도 영향을 받는다. 이는 한 시장의 변동성이 다른 시장의 거래정보에 의해서 영향을 받는다는 것이다. 변동성에 대한 거래정보의 교차시장효과(cross-market effect)가 존재함을 의미한다. 둘째, 옵션시장의 변동성은 투자자들의 거래정보로는 설명되지 않는다. 이는 옵션시장의 변동성이 한 달 미래의 기초자산의 변동성에 대한 기대를 반영하고 있기 때문이다. 셋째, 전반적으로 개인의 경우 변동성을 증가시키는 것으로 나타났으며, 기관과 외국인 투자자의 경우 변동성을 감소시키는 것으로 나타났다. 이러한 연구결과는 변동성이 주요한 변수로 작용하는 영역인 투자전략, 위험관리, 금융시장 안정화방안 등에 활용될 수 있을 것이다.

In this research, we investigate the relationship between volatility and the trading volumes of trader types in the KOSPI 200 index stock market, futures market, and options market. Three types of investors are considered: individual, institutional, and foreign investors. The empirical results show that the volatility of the stock market and futures market are affected by the transaction information from another market. This means that there exists the cross-market effect of trading volume to explain volatility. It turns out that the option market volatility is not explained by any trading volume of trader types. This is because the option market volatility, VKOSPI, is the volatility index that reflects traders' expectation on one month ahead underlying volatility. Third, individual investors tend to increase volatilities, whereas institutions and foreign investors tend to stabilize volatilities. These results can be used in the areas of investment strategies, risk management, and financial market stability.

키워드

참고문헌

  1. Karpoff, J. M., "The Relation between Price Changes and Trading. Volume: A Survey," Journal of Financial and Quantitative Analysis, Vol. 22, No. 1, pp. 109-206, 1987. DOI: http://dx.doi.org/10.2307/2330874
  2. Bessembinder, H., and P. J. Seguin, "Futures-trading Activity and Stock Price Volatility," Journal of Finance, Vol. 47, No. 5, pp. 2015-2034, 1992. DOI: http://dx.doi.org/10.1111/j.1540-6261.1992.tb04695.x
  3. Copeland, T. E., "A Model of Asset Trading under the Assumption of Sequential Information Arrival," Journal of Finance, Vol. 31, pp. 1149-1168, 1976. DOI: http://dx.doi.org/10.2307/2326280
  4. Daigler, R. T., and M. K. Wiley, "The Impact of Trader Type on the Futures Volatility-Volume Relation," Journal of Finance, Vol. 54, Issue 6, pp. 2297-2316, 1999. DOI: http://dx.doi.org/10.1111/0022-1082.00189
  5. Wang, C. Y., "The Effect of Net Positions by Type of Trader on Volatility in Foreign Currency Futures Markets," Journal of Futures Markets, Vol. 22, No. 5, pp. 427-450, 2002. DOI: http://dx.doi.org/10.1002/fut.10021
  6. Ang, A., R. J. Hodrick, Y. Xing, and X. Zhang, "The Cross-Section of Volatility and Expected Returns," Journal of Finance, Vol. 61, pp. 259-299, 2006. DOI: http://dx.doi.org/10.1111/j.1540-6261.2006.00836.x
  7. Foucault, T., D. Sraer, and D. Thesmar, "Individual Investors and Volatility," Journal of Finance, Vol. 66, pp. 1369-1406, 2011. DOI: http://dx.doi.org/10.1111/j.1540-6261.2011.01668.x
  8. Ohk, K., T. Kim, and K. Ko, "Effects of Futures Trading Activities: Using Smooth Transition Regression," Korean Journal of Financial Studies, Vol. 41, No. 4, pp. 617-646, 2012.
  9. Yoon, S., and S. Kim, "The Effect of Individual Investor on Volatility Trading in the KOSPI200 Index Options Markets," Asian Review of Financial Research, Vol. 26, No. 4, pp. 417-446, 2013.
  10. Khil, J., N. Kim, and Y. Sohn, "The Impact of the Invesetors' Trading Behavior on the Return and the Volatility in the Recent Korean Stock Market," Korean Journal of Financial Studies, Vol. 35. No. 3, pp. 77-1016, 2006.