When analysing the data periods including the pre-financial and financial crisis periods, the results show that investors might make profits by using Variable Length Moving Average (VMA) trading rules as buying signals rather than as selling signals shown for the Brazil, Russia, India and China (BRIC) stock markets. However, investors may find it difficult to make profits in a financial crisis period, suggesting that more detailed information should be investigated, since the significant results shown during the full period might not reveal the differences between the pre-financial and financial crisis periods.
