Reação do mercado às republicações de demonstrações contábeis no Brasil no período de 2000 a 2011

Abstract

This work aims to check for impact of restatements of the companies whose shares are traded on the São Paulo Stock Exchange in the period from 2000 to 2010, in its stock price. The study assumes that the Brazilian stock market is semistrong. The methodology used in this research was qualitative in part to describe the sample and its characteristics as well as in the form of quantitative tests of differences in average. The test results show that to analyze the entire sample as a single group, the abnormal returns showed significant difference found in comparison with the expected values calculated, but when analyzed in distinct cleavages by the kind of motivation to republication, were found evidence that there is significant difference between the samples of republications of voluntary and mandatory financial statements. So how were also found evidence that there may be significant differences between the segmented samples by the nature of the error made with justification for the republication of the financial statement, both in case of measurement, classification and recognition. The same evidence is presented in the graphs of the averages of the abnormal returns calculated for this study.