3 Consider The Allen And Gale Model Of Contagion Where The Storage Asset Allows The Costless Transfer Of One Unit From 1 (93.18 KiB) Viewed 19 times
3. Consider the Allen and Gale model of contagion, where the storage asset allows the costless transfer of one unit from one time period to another and the illiquid asset pays out R = 2 in period 2 but only if it is liquidated early in period 1. There are four regions A, B, C and D, where in each region there is a continuum of investors measure 1 with a Prob. w of being early consumers who only to consume in period 1, G and Prob. 1 - w of being late consumers who only consume in period 2, C2 and so the expected utility function is given by w In(c1) + (1 -w) In(cz) Suppose there are two states of the world, S, and S2, that occur with equal probability, where the pattern of regional liquidity shocks in each state of the world is described by the following table Table of Regional Liquidity Shocks А B с D S wh = } WL = o wg = WL = To S2 WL = 1 WH = $WL = wa For all questions state any assumptions you are making in deriving your answers.
(a) What is the optimal bank contract for agents in this economy? What is the level of investment by Banks in the illiquid asset, I, under this contract? (b) What is the level of interbank deposits that will allow banks to offer the optimal contract with no shortage of liquidity. (c) Consider the complete markets interbank network structure where banks hold deposits from both regions with negatively correlated liquidity shocks, so that e.g. banks in region A hold deposits from banks in region B and region D.Describe the asset flows between regions A and B in the case of shock Si (d) Considering the complete markets interbank network structure of part c). Analyze the asset flows between regions in the case of a perturbation states, where liq- uidity demand in period 1 is 0.2 in regions B, C and D and where liquidity demand is 0.2 + e, in region A where e = 0.1. Are there bank runs in any region? (e) Now suppose that the illiquid asset pays out R = 2 in period 2 but only if it is liquidated early in period 1. How does the effect your answer to part d)?
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