The buffer stock model redux? An analysis of the dynamics of foreign reserve accumulation

Cointegration analysis suggests that the buffer stock precautiony model accounts for the optimal reserve demand in nine developing countries located in Asia and Latin America. The corresponding VECMs are further interpolated, using the permanent and transitory innovation decomposition procedure, in order to assess the relative impact of the time series on the convergence to equilibrium after a shock. Finally the (asymmetric) effect on the speed of convergence of positive/negative changes in signal variables—such as the excess reserves of the previous period, relative competitiveness and US monetary stance—is found to be significant, in line with mercantilistic and fear of floating motives for hoarding reserves.