Banks’ Liquidity Management and Systemic Risk
|Title||Banks’ Liquidity Management and Systemic Risk|
|Publication Type||Working Paper|
|Year of Publication||2017|
|Authors||LG. Deidda, E. Panetti|
|ISBN Number||978 88 9386 035 2|
|Keywords||bank runs, excess liquidity, global games, systemic risk|
We study a novel mechanism to explain the interaction between banks’ liquidity management and the emergence of systemic financial crises, in the form of self-fulfilling runs. To this end, we develop an environment where banks offer insurance to their depositors against both idiosyncratic and aggregate real shocks, by holding a portfolio of liquidity and illiquid productive assets. Moreover, banks’ asset portfolios and the probability of a depositors’ self-fulfilling run are jointly determined via a “global game”. We characterize the sufficient conditions under which there exists a unique threshold recovery rate, associated with the early liquidation of the productive assets, below which the banks first employ liquidity and then liquidate, in order to finance depositors’ early withdrawals. Ex ante, the banks hold more liquidity than in a full-information economy, where there are no self-fulfilling runs and risk is only due to idiosyncratic and aggregate real shocks.