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Economic gains of realized volatility in the Brazilian stock market/Ganhos economicos da volatilidade realizada no mercado Brasileiro de acoes

This paper evaluates the economic gains associated with following a volatility timing strategy based on a multivariate model of realized volatility. To study this issue, we build a high frequency database with the most actively traded Brazilian stocks. Comparing with traditional volatility methods,...

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Bibliographic Details
Published in:Revista Brasileira de Financas 2014-09, Vol.12 (3)
Main Authors: Garcia, Marcio Gomes Pinto, Medeiros, Marcelo Cunha, de Luna, Francisco Almeida Santos Eduardo
Format: Article
Language:English
Online Access:Get full text
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Summary:This paper evaluates the economic gains associated with following a volatility timing strategy based on a multivariate model of realized volatility. To study this issue, we build a high frequency database with the most actively traded Brazilian stocks. Comparing with traditional volatility methods, we find that, when estimation risk is controlled, economic gains associated with realized measures perform well and increase proportionally to the target return. When expected returns are bootstrapped, however, performance fees are not significant, which is an indication that economic gains of realized volatility are offset by estimation risk. Keywords: realized volatility; utility; forecasting. JEL code: G11; G17. O artigo avalia os ganhos economicos associados a execucao de uma estrategia baseada em volatilidade a partir de um modelo multivariado de volatilidade realizada. Para tanto, construimos uma base de dados em alta frequencia que contem as acoes mais negociadas no mercado de acoes Brasileiro. A comparacao com modelos tradicionais de volatilidade mostra que, quando o risco de estimacao e controlado, ha ganhos economicos positivos associados as medidas de volatilidade realizada e tais ganhos crescem proporcionalmente aos retornos-alvo. No entanto, quando os retornos esperados sao randomizados, as taxas de desempenho nao sao significativas, sugerindo que os ganhos economicos da volatilidade realizada sao compensados pelo risco de estimacao. Palavras-chave: volatilidade realizada; utilidade; previsao.
ISSN:1679-0731