Crise financeira da Americanas : uma investigação dos seus efeitos sobre as principais concorrentes e sobre os bancos comerciais privados

Abstract

This work aims to analyze the impact of the financial crisis of Americanas S.A. on the stock prices of Magazine Luiza and Mercado Livre, as well as on the banks Bradesco, BTG Pactual, and Santander, considering the semesters preceding and following the announcement. Regarding the methodological procedures employed, this research is characterized as descriptive and of a quantitative nature. For data collection, a documentary research approach was used, utilizing secondary data available on the B3 website, Yahoo Finance, and the financial statements of Americanas for the years 2019 to 2021. In data analysis, the Student's t test was applied, along with descriptive statistics for average stock returns, the development of the Pearson correlation matrix, simple regression, and, in order to assess market efficiency, tests of normality, randomness, and serial correlation were conducted. Thus, it was concluded that, during the study period, only Mercado Livre experienced statistically significant impacts, and only 3 out of the 6 companies analyzed exhibited efficient market behaviors, along with the Ibovespa.