Abstract
Purpose: The aim of this study is to assess the potential maximum loss in more concentrated investment portfolios and more diversified portfolios using the VaR calculation as a tool for controlling and managing market risk. For this, the study proposes to answer the following research question: "Do more diversified equity funds present less risk?"
 Methodology: The historical simulation model was applied, considering seven portfolios of equity investment funds (FIAs) and 493 daily returns, under the 95% confidence level.
 Results: The results indicated that the maximum expected loss is higher in more concentrated portfolios. Therefore, the diversification strategy helped to reduce risk and is an important instrument to be considered in a stock portfolio.
 Contributions of the Study: The main contribution of the study is to provide subsidies for investors and asset managers, while providing a simulation and practical application of VaR in the analysis of portfolio diversification in equity investment funds.
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