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BOK Working Paper No.2012-13, Mitigating Systemic Spillovers from Currency Hedging

Economic Research Institute 2012.11.27 4492

Title : Mitigating Systemic Spillovers from Currency Hedging

 

Authors : Kyuil Chung, Hail Park, Hyun Song Shin

 

Abstract

 

Korea has been a forerunner in incorporating macroprudential policies to mitigate the vulnerabilities from currency crises that can turn into a more generalized liquidity crisis. This paper examines longer-term design issues for a more resilient and stable financial system that can complement the existing macroprudential measures. In the period before the Lehman crisis of 2008, rapid growth of short-term foreign currency denominated debt in Korea was the result of banks receiving forward dollar sales by exporters and asset managers, and then hedging the long dollar position by borrowing short in dollars. Our paper examines the rationale and mechanics of a new public financial institution, provisionally called the Exchange Stabilization Corporation (ESC) whose main role is to allow Korean exporters to hedge their currency exposure without generating currency or maturity mismatch in the Korean financial system as a whole. Three features of the ESC enable such a role:  (1) it is fully equity-financed, rather than debt financed like a bank (2) its gains and losses are evaluated in US dollars, and (3) it holds a portfolio of both US dollar-denominated and Korean won-denominated assets. The ESC maintains a fully hedged position by switching between assets in different currencies while balance sheet size is fixed.  This is in contrast to banks, who hedge their currency exposure by expanding the balance sheet by taking on more short-term dollar denominated debt. This paper is intended as a contribution to discussions about policies toward longer-term financial resilience, rather than about short-term crisis management policies in the light of current financial developments. More detailed research and study on feasibility of the ESC would be needed before it can be put in place.

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