The study looked at how stock market returns in BRICS countries were affected by news from the US between 2007 and 2013, including the 2008 financial crisis. They used a GARCH model to analyze the impact on global and BRICS stock indices. The research found that US news had a significant impact on most BRICS markets, except for Brazil and China. There were noticeable differences in stock return volatility across all countries. This suggests that investors looking to diversify their portfolios should take these findings into account.