SSA is a univariate time-series model and does not rely on a priori defined functions; however, it generates a set of components directly from the time-series under study . Unlike in traditional time-series models, the trend is any gradually varying component of the series that does not contain cyclical or seasonal components. The SSA model is also nonparametric; hence, it is not limited by linearity, normality, and stationarity of the data. Applying SSA to measure the nonlinear dependency of financial markets shows more accurate than conventional univariate time-series models.