Evaluating stock exchange volatility in Brazil after its upgrade to investment grade.
Keywords:
Ideologia. Futebol. Consumo. Torcedor. Dominação.Abstract
International evidence show that emerging countries upgraded to investment grade (IG) presented stock exchange volatility mitigation. This article evaluates volatility path of Ibovespa after Brazil´s upgrade to IG to confront with international evidence. It´s utilized TGARCH and EGARCH models to estimate conditional volatility of Ibovespa and MSCI Emerging Markets, this selected as benchmark. Results obtained are compatible with international evidence: it was observed considerable decrease of absolute and relative volatility of Ibovespa in the period of six years after investment grade was granted to Brazil. On the other hand, from 2012 on it was observed a reversal path of Ibovespa´s volatility mitigation process while macroeconomic fundaments started to deteriorate in Brazil driving to IG loss by two agencies in 2015.
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