International portfolio of stock indices with spatiotemporal correlations: Can investors still benefit from portfolio, when and where?
Weiguo Zhang and
The North American Journal of Economics and Finance, 2019, vol. 47, issue C, 168-183
This paper revisits the topic of international portfolio of stock indices under spatiotemporal correlations, to help people to get better portfolio performance in international stock markets. We firstly develop a mean-VaR framework as well as a mean-CVaR one, where both of which are with spatiotemporal correlation and other constraints. Then we apply these two frameworks to investigate whether investors can gain in international stock markets or not under various constraints. Our empirical results find that 1) Investors can still benefit from the international portfolio with spatiotemporal correlations, either in the view of avoiding risk or pursuing the profit; 2) the spatiotemporal correlation and exchange rate contribute to the performance of portfolio significantly, and transaction cost and fixed income rarely have effect on the portfolio, both in crisis and calm periods. Additionally, in the period of calm, the skewness of each single return series has some significant impact on the portfolio performance; 3) the portfolio with lowest spatiotemporal correlation with other markets is the optimal choice. In addition, in the calm period, another suitable area can be the one with positive mean and negative skewness of returns, such as in the U.K. market; 4) the mean-CVaR framework outperforms the mean-VaR one in financial calm period, but equals to the latter in crisis time. Our results demonstrate that the proposed mean-CVaR programming framework with spatiotemporal correlation provides a more flexible and effective decision support tool for international portfolio.
Keywords: International portfolio; Spatiotemporal correlation; Conditional value-at-risk (CVaR); Value-at-risk (VaR); Stock index (search for similar items in EconPapers)
References: View references in EconPapers View complete reference list from CitEc
Citations: Track citations by RSS feed
Downloads: (external link)
Full text for ScienceDirect subscribers only
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
Persistent link: https://EconPapers.repec.org/RePEc:eee:ecofin:v:47:y:2019:i:c:p:168-183
Access Statistics for this article
The North American Journal of Economics and Finance is currently edited by Hamid Beladi
More articles in The North American Journal of Economics and Finance from Elsevier
Bibliographic data for series maintained by Dana Niculescu ().