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Índices setoriais do mercado acionário brasileiro e eficiência de mercado: uma análise comparativa entre a crise do subprime e a pandemia da COVID-19
The main objective of this research was to examine the (in)efficiency of the Brazilian financial market, focusing on sectoral indices, during two periods: the Subprime crisis (September 2008 to December 2009) and the COVID-19 pandemic (February 2020 to January 2022). The study tested the validity of
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