A Model of a Systemic Bank Run
46 Pages Posted: 8 Jan 2010 Last revised: 14 Jan 2010
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A Model of a Systemic Bank Run
A Model of a Systemic Bank Run
Date Written: September 24, 2009
Abstract
This paper provides a model of the view that the 2008 financial crisis is reminiscent of a bank run, focusing on six stylized key features. In particular, core financial institutions have invested their funds in asset-backed securities rather than committed to long-term projects: In distress, these can potentially be sold to a large pool of outside investors at steep discounts. I consider two different motives for outside investors and their interaction with banks trading asset-backed securities: Uncertainty aversion versus adverse selection. I shall argue that the version with uncertainty averse investors is more consistent with the stylized facts than the adverse selection perspective: In the former, the crisis deepens, the larger the market share of distressed core banks, while a run becomes less likely instead as a result in the adverse selection version. Therefore, the outright purchase of troubled assets by the government at prices above current market prices may both alleviate the financial crises as well as provide tax payers with returns above those for safe securities.
Keywords: systemic bank run, bank run, systemic risk, financial crisis, firesale pricing, adverse selection, uncertainty aversion
JEL Classification: G21, G12, G14, G01
Suggested Citation: Suggested Citation