The purpose of this study is to confirm the lead-lag relationship using the time series data of
KOSPI200 and real transaction price index. First, the unit root test is performed and a cointegration
analysis is performed to confirm the long-term and stable relationship between time series. And we analyze
the leading-delay relation by analyzing the Grandeur causality using VAR model.
The results of this study are as follows.
First, the cumulative return of the metropolitan area index was 31.4% and the cumulative return of the
local index was 35.8%. Second, there is at least one cointegration in the national index and the
metropolitan index, but there is no cointegration in the local index. Third, we use VAR model to analyze
what kind of variables precede KOSPI, national index, metropolitan area index, and local index variable
and predict power according to this precedence.