We investigate the dynamic relationships between the US five-year financial CDS sector index spreads for the banking, financial services and insurance sectors in the short- and long-run over the recent period which is marked by the onset of the global financial crisis. For this purpose, we implement a Smooth Transition Error-Correction Model (STECM) to accommodate the presence of nonlinearities and asymmetry in the adjustment process of the CDS variables toward their long-run equilibrium. Our findings provide evidence of significant long-run equilibrium links for two out of the three CDS indices, which are found to be typically asymmetric and nonlinear. These findings are more potent and more strongly policy oriented when the control variables are introduced into an extended STECM. (C) 2014 Elsevier B.V. All rights reserved.