국제 장외 주가지수선물시장의 헤지성과 비교분석에 관한 연구 : 나스닥100지수와 스타지수선물
A Study on the Hedge Effectiveness of NASDAQ100 and STAR Index Futures Markets
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본 연구는 2005년 11월 7일부터 2009년 2월 5일까지 나스닥100지수와 스타지수 선물시장의 각 현물시장에 대한 헤지성과를 비교분석하기 위하여 정태적인 헤지모형 뿐만 아니라 동태적인 헤지모형을 추정하였다. 헤지모형은 최소분산헤지모형과 이변량 ECT-GARCH(generalized autoregressive conditional heteroskedasticity)을 사용하였다. 실증분석 결과 나스닥100지수와 스타지수 현물과 선물시장사이에는 공적분관계가 존재하는 것으로 나타났다. 헤지성과 분석결과에 의하면 내표본(within sample)과 외표본(out-of sample)기간 모두 나스닥100지수 선물시장의 헤지성과가 스타지수 선물시장 보다 상대적으로 더 나은 것으로 나타났으며 전통적인 최소분산헤지모형의 헤지성과가 시간변동 이변량 ECT-GARCH모형의 헤지성과보다 더 나은 것으로 나타났다. 또한 헤지기간별 헤지성과를 비교분석하기 위하여 주별자료를 이용하여 각 지수선물에 대한 헤지성과를 분석한 결과, 내표본기간과 외표본기간동안 나스닥100지수선물과 스타지수선물 모두 헤지기간이 길어질 수록 헤지성과가 더 높아지는 것으로 나타났다. 일별자료에 대한 헤지성과와 마찬가지로 주별자료에서도 전통적인 최소분산헤지모형의 헤지성과가 시간변동 이변량 ECT-GARCH류 모형의 헤지성과에 뒤지지 않는 것으로 나타났다. 이러한 실증분석결과는 Kavussanos and Visvikis(2008), Miffre(2004), Holmes(1996) 및 Lien and Tse(1999) 등의 연구와 일맥상통하는 것으로 나타났다.
Abstract
This study investigates and compares the hedge performance of OTC stock index futures in USA and Korea. We employ the minimum variance hedge model as well as time varying bivariate ECT-GARCH(1,1) model as hedge instruments, and analyze their hedge performances. The sample period covers from November 7, 2005 to February 5, 2009 with daily near-by prices of the NASDAQ100 and STAR index futures and cash. The important findings may be summarized as follows. First, there is a co-integration relationship between NASDAQ100 and STAR index spot and futures markets. Second, according to within and out-of sample period hedge performance, NASDAQ100 index futures' hedge performance is much better than that of STAR index futures contract. Third, we also find that the hedge performance of the minimum variance model with constant hedge ratios is relatively greater than that of bivariate ECT-GARCH(1,1) model with time-varying hedge ratios. Fourth, we find that the hedge performance of weekly data is relatively superior to the that of daily data. These empirical results are similar to those of Kavussanos and Visvikis(2008), Miffre(2004), Holmes(1996), and Lien and Tse(1999) which studied the hedge performance of Athens, S&P500, NYSE and Nikkei225 stock index futures.
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