The â€˜Celtic Crisisâ€™: Guarantees, transparency, and systemic liquidity risk
Bank liability guarantee schemes have traditionally been viewed as costless measures to shore up investor confidence and stave off bank runs. However, as the experiences of some European countries, most notably Ireland, have demonstrated, the credibility and effectiveness of these guarantees is crucially intertwined with the sovereignâ€™s funding risks. Employing methods from the literature on global games, we develop a simple model to explore the systemic linkage between the rollover risks of a bank and a government, which are connected through the governmentâ€™s guarantee of bank liabilities. We show the existence and uniqueness of the joint equilibrium and derive its comparative static properties. In solving for the optimal guarantee numerically, we show how its credibility may be improved through policies that promote balance sheet transparency. We explain the asymmetry in risk-transfer between sovereign and banking sector, following the introduction of a guarantee as being attributed to the resolution of strategic uncertainties held by bank depositors and the opacity of the banksâ€™ balance sheets.
|Date of creation:||May 2013|
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