Impacts of Federal Open Market Committee Announcements on Ibovespa: an Event Study between 2017 and 2022
Announcements, Efficient Market Hypothesis, Event Study, Monetary Policy
Given the global influence of the American economy, and the prevalence of its currency as the global mean of exchange, the effects of changes in its monetary policy have potential to affect the whole world. In the context of corporate finance, event study methodology has been widely used by researchers to present evidence about informational impacts on financial markets, being used quite often to analyze the impacts of American monetary policy changes. The presence of works involving the influence of changes in the American interest rate over other markets, in special the Brazilian case, however, has been less explored. Using the event study methodology, this paper utilizes the GARCH framework to present evidence about the effects of American monetary policy shocks in the vectors of returns and volatility of the Brazilian stock market, testing the efficient market hypothesis in its semi strong form