Commerce 1 Costs 1 Emerging markets Exchange rates 1 Financial markets 1 GARCH 1 Global financial crisis 1 Investments Mean-variance approach 1 Oil Prices 1 Oil price returns 1 Regression analysis 1 Stock returns 1 VAR 1 Vector autoregressions 1 World stock returns 1 commodity price 1 exchange rate 1 financial crisis 1 oil supply 1 regional economy 1 stock market 1 vector autoregression 1