Two-stage methodology is developed to verify how the unanticipated asymmetry variations affect the stock returns. A GARCH model is investigated on residuals from a CIP identification followed by an ARJI model examination of the stock return. Consequently, a negative exogenous change can result...

This study blends the simplicity and empirical success of univariate GARCH processes with an easy to estimate and interpret dynamic correlation estimator. A two step estimator and a simple test are employed to verify the null of constant correlation against an alternative of dynamic conditional...