In this article, we investigate the hypothesis of efficiency of central bank intervention policies within the current global financial crisis. We firstly discuss the major existing interventions of central banks around the world to improve liquidity, restore investor confidence and avoid a...

The aim of this article is to study linkages between equity and information technology sector prices. We thus investigate the price adjustment dynamics of the Information Technology (IT) sector in response to the 2007--2009 worldwide market shock for two representative developed countries...

This article studies the efficiency of the aluminium market based on contracts traded on the London Metal Exchange (LME) over the last 3 decades. We test for both short- and long-run efficiency using nonlinear cointegration and Error Correction Models (ECM). Our findings suggest the following...

This article develops a method of nonlinear modelling for the dividends of the Group of seven (G7) indexes using threshold techniques: Smooth Transition Autoregressive Models (STAR). First, smoothness and nonlinearity are justified by the presence of heterogeneous expectations and companies of...