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Long-run restrictions have been used extensively for identifying structural shocks in vector autoregressive (VAR) analysis. Such restrictions are typically justidentifying but can be checked by utilizing changes in volatility. This paper reviews and contrasts the volatility models that have been...
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,1) and its asymmetric variants. Three of the four returns series showed heteroscedasticity. The results of the fitted models …
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This paper provides a theoretical explanation for the heteroscedasticity of asset returns. In line with existing … assumptions that investors behave according to Prospect Theory and are subject to mental accounting in a dynamic setting, we … analytically derive the unit-root versions of two of the best fitting heteroscedasticity models (EGARCH and TGARCH). The model is …
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