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Vesa Poikonen

26 May 2006
WORKING PAPER SERIES - No. 624
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Abstract
This paper studies the implications of introducing an explicit policy objective to the management of foreign reserves at a central bank. A dynamic model is developed which links together reserves management and the exchange rate by foreign exchange interventions. The exchange rate is modelled as a mean-reverting autoregressive process incorporating a linear response to interventions. The premise is that it is the objective of the central bank to prevent undervaluation of its currency. Given this objective, the model is formulated in a one- and a multi-period setting and solved to find the optimal asset allocation. The results show that asset allocation can significantly help in achieving the desired policy objective.
JEL Code
G11 : Financial Economics→General Financial Markets→Portfolio Choice, Investment Decisions
F31 : International Economics→International Finance→Foreign Exchange