Bank run

Bank run. A bank run occurs when a large number of depositors simultaneously withdraw their funds from a bank due to fears of the institution's insolvency. This sudden demand for liquidity can overwhelm the bank's reserves, often leading to its actual collapse. The phenomenon is a classic example of a self-fulfilling prophecy in economics and a key trigger for broader financial panics.

Definition and mechanism

The core mechanism involves depositors, fearing the loss of their savings, rushing to convert their demand deposits into cash. Banks operate on the principle of fractional-reserve banking, holding only a small fraction of deposits as reserves while lending out the remainder. This system works under normal conditions but cannot sustain a coordinated mass withdrawal. The process can quickly escalate from a single institution to a systemic banking panic, affecting multiple commercial banks and credit unions. Modern electronic transfers can accelerate such events far beyond the pace of historical queues outside bank branches.

Historical examples

Numerous instances have shaped financial regulation worldwide. A seminal event was the run on Knickerbocker Trust during the Panic of 1907, which led to the creation of the Federal Reserve. The Great Depression saw catastrophic waves of runs, culminating in the Emergency Banking Act of 1933 and the establishment of the FDIC. In the United Kingdom, the 2007 run on Northern Rock was the first in that nation since the Overend, Gurney crisis of 1866. The 2012–2013 Cypriot financial crisis featured severe runs on banks like Bank of Cyprus, leading to unprecedented bail-in measures.

Causes and triggers

Primary causes stem from a crisis of confidence in a bank's assets or management. Triggers often include the public failure of a similar institution, as seen with the collapse of Lehman Brothers in 2008. Revelations of significant loan losses, fraud scandals like that at Washington Mutual, or severe sovereign debt problems can spark fears. Economic recessions, stock market crashes, and political instability are common macroeconomic catalysts. The rise of social media platforms like Twitter can now rapidly disseminate rumors and amplify panic.

Consequences and economic impact

The immediate consequence is often the liquidation of the affected bank by regulators such as the FDIC or the ECB. For the broader economy, runs can precipitate a severe credit crunch as surviving institutions tighten lending standards, stifling economic growth. They can trigger fire sales of assets, depressing prices and spreading losses across the financial system. Historically, systemic runs have deepened crises like the Great Depression and the 2008 financial crisis, leading to massive government debt from bailouts and prolonged unemployment.

Prevention and mitigation

The cornerstone of prevention is deposit insurance, pioneered by the FDIC following the Glass–Steagall Act. Central banks, including the Federal Reserve and the Bank of England, act as lenders of last resort to provide emergency liquidity. Prudential regulations like Basel III set capital and liquidity coverage requirements for institutions like JPMorgan Chase. During crises, measures such as bank holidays, implemented by President Franklin D. Roosevelt in 1933, or government guarantees, as used by Chancellor Alistair Darling for Northern Rock, can temporarily halt panic. Continuous stress testing by bodies like the EBA aims to identify vulnerabilities proactively.

Category:Banking Category:Financial crises Category:Macroeconomics