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Despite the growing interest in realized stochastic volatility models, their estimation techniques, such as simulated maximum likelihood (SML), are computationally intensive. Based on the realized volatility equation, this study demonstrates that, in a finite sample, the quasi-maximum likelihood...
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apply extreme value theory (EVT) distributions to predict extreme losses of five South African (SA) financial times stock … independently and identically distributed (i.i.d). It is therefore concluded that the generalized Pareto distribution (GPD) is a …
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The paper develops a novel realized matrix-exponential stochastic volatility model of multivariate returns and realized covariances that incorporates asymmetry and long memory (hereafter the RMESV-ALM model). The matrix exponential transformation guarantees the positivedefiniteness of the...
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