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http://dx.doi.org/10.13106/jafeb.2020.vol7.no9.095

Asian Stock Markets Analysis: The New Evidence from Time-Varying Coefficient Autoregressive Model  

HONGSAKULVASU, Napon (Faculty of Economics, Chiang Mai University)
LIAMMUKDA, Asama (Department of Statistics, Faculty of Science, Chiang Mai University)
Publication Information
The Journal of Asian Finance, Economics and Business / v.7, no.9, 2020 , pp. 95-104 More about this Journal
Abstract
In financial economics studies, the autoregressive model has been a workhorse for a long time. However, the model has a fixed value on every parameter and requires the stationarity assumptions. Time-varying coefficient autoregressive model that we use in this paper offers some desirable benefits over the traditional model such as the parameters are allowed to be varied over-time and can be applies to non-stationary financial data. This paper provides the Monte Carlo simulation studies which show that the model can capture the dynamic movement of parameters very well, even though, there are some sudden changes or jumps. For the daily data from January 1, 2015 to February 12, 2020, our paper provides the empirical studies that Thailand, Taiwan and Tokyo Stock market Index can be explained very well by the time-varying coefficient autoregressive model with lag order one while South Korea's stock index can be explained by the model with lag order three. We show that the model can unveil the non-linear shape of the estimated mean. We employ GJR-GARCH in the condition variance equation and found the evidences that the negative shocks have more impact on market's volatility than the positive shock in the case of South Korea and Tokyo.
Keywords
Non-Stationary; Time-Varying Coefficient; Autoregressive Model; Asian Stock Markets; GJR-GARCH;
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Times Cited By KSCI : 2  (Citation Analysis)
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