Essays on Economic Policy (ESPE in Spanish) - Public Savings and the Effectiveness of Sterilized Foreign Exchange Intervention

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In the journal Essays on Economic Policy (ESPE) - we disclose the results and policy proposals that arise from academic research carried out at the Banco de la República. When you read us, always keep in mind that the content of our articles, as well as the analyzes and conclusions derived from them, are the sole responsibility of their authors. The material disclosed in our ESPE magazine does not compromise or represent the opinion of Banco de la República or that of its Board of Directors.

AUTHOR OR EDITOR
Medellín-Martínez, Juan Camilo
Publication Date:
Friday, 09 November 2018

Abstract
Although theoretical models exist that support the Effectiveness of Sterilized Foreign Exchange Intervention (FXI), practiced by central banks with the objective of affecting the level and reducing the volatility of the exchange rate, empirical works provide mixed testimony for developed and emerging countries. Using a GARCH model, this paper aims to offer empirical evidence of how periods of public savings enhance the effectiveness of sterilized FXI for Colombia. To do so, it is necessary to estimate a policy shock measure based on the determinants of foreign exchange (FX) purchases made by the Colombian Central Bank over the 2010-2014 period. During this time span, Banco de la República performed an innovative type of foreign exchange purchases known as Pre-Announced Day-to-Day Interventions. A reaction function for this type of intervention has not yet been estimated. Here, this reaction function will be estimated with an ordinary least squares (OLS) model.