Article ID Journal Published Year Pages File Type
7382143 Physica A: Statistical Mechanics and its Applications 2014 7 Pages PDF
Abstract
This study examines intraday relationships among the spot index, index futures, and the implied volatility index based on the VAR(1)-asymmetric BEKK-MGARCH model. Analysis of a high-frequency dataset from the Korean financial market confirms that there is a strong intraday market linkage between the spot index, KOSPI200 futures, and VKOSPI and that asymmetric volatility behaviour is clearly present in the Korean market. The empirical results indicate that the futures return shock affects the spot market more severely than the spot return shock affects the futures market, though there is a bi-directional causal relationship between the spot and futures markets. Our results, based on a high-quality intraday dataset, satisfy both the positive risk–return relationship and asymmetric volatility effect, which are not reconciled in the frameworks of previous studies.
Related Topics
Physical Sciences and Engineering Mathematics Mathematical Physics
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