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This paper employs weighted least squares to examine the risk-return relation by applying high-frequency data from four major stock indexes in the US market and finds some evidence in favor of a positive relation between the mean of the excess returns and expected risk. However, by using...
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Hafner and Herwartz (2006) analysis of multivariate GARCH models using volatility impulse response analysis. We use two sets … of data, daily realized volatility estimates taken from the Oxford Man RV library, running from the beginning of 2000 to …) and the subsequent European Sovereign Debt Crisis (ESDC). The spillover index captures the transmission of volatility to …
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We propose a semi-parametric coupled component GARCH model for intraday and overnight volatility that allows the two … of 1992-2015. We show that actually the ratio of overnight to intraday volatility has increased in importance for big … stocks in the last 20 years. In addition, our model provides better intraday volatility forecast since it takes account of …
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