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We propose several multivariate variance ratio statistics. We derive the asymptotic distribution of the statistics and scalar functions thereof under the null hypothesis that returns are unpredictable after a constant mean adjustment (i.e., under the weak form Efficient Market Hypothesis). We do...
Persistent link: https://www.econbiz.de/10010496122
but also of dynamic correlations, is the concept of a regularized return, obtained from a volatility proxy in conjunction …
Persistent link: https://www.econbiz.de/10012584099
but also of dynamic correlations, is the concept of a regularized return, obtained from a volatility proxy in conjunction …
Persistent link: https://www.econbiz.de/10013040932
covariances, is the concept of a regularized return, obtained from a volatility proxy in conjunction with a smoothed sign …
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Aggregate implied volatility spread (IVS), defined as the cross-sectional average difference in the implied …
Persistent link: https://www.econbiz.de/10011897782
We examine the performance of volatility models that incorporate features such as long (short) memory, regime …-t). Second, we perform a comprehensive panel forecasting analysis of the MSM models as well as other competing volatility models … over the alternative volatility models in terms of mean absolute forecast errors and that (iii) forecast combinations …
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