The study aimed to find a better way to estimate the risk of financial investments in emerging markets. Researchers used a method called time-varying copula to predict the potential losses in a portfolio made up of stocks from Brazil and Mexico. They compared this method to another one called EWMA and found that the copula model was better at predicting extreme losses. This means investors can use the copula model to figure out how much money they need to set aside to cover potential losses, following certain regulations.