Browsing FGV EPGE - Ensaios Econômicos by Subject "Bolsa de Valores de São Paulo"

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A aleatoriedade do passeio na BOVESPA: testando a eficiência do mercado acionário brasileira

Coelho, Cristiano Augusto Fernandes; Bonomo, Marco Antônio Cesar; Torres, Ricardo
2000-10-01

We tested two versions of the random walk model for portfolios of Brazilian stocks. We found evidence of persistency in daily and weekly returns, rejecting the random walk models. Those evidences are weaker in recent ...