What is a bank run? And why does confidence matter for a bank?

(Credit: Unsplash)

This article is brought to you thanks to the collaboration of The European Sting with the World Economic Forum.

Author: Emma Charlton, Writer, Forum Agenda

  • Bank runs occur when a bank faces a loss of confidence, sparking many customers to withdraw their deposits.
  • Massive withdrawals happening simultaneously put the bank’s existence at risk.
  • This creates fears and contagion can spread from one institution to another, undermining the banking system as a whole.
  • Businesses and consumers around the world are generally better protected from bank failures now, compared with the financial crisis of 2008, due to stricter legislation.
  • Even so, not all of the rules apply to smaller banks and some portions of the legislation have been rolled back.

Confidence is defined as the belief that you can have faith in, or rely on, something.

The opposite – the feeling that something cannot be relied upon – can quickly take hold and spread, leading to nerves and jitters, even if they are unfounded.

It’s these two elusive forces that are at work when we talk about a bank run.

Bank runs, the financial system, and confidence are in the headlines after US officials stepped in to protect depositors at two American banks: Silicon Valley Bank of Santa Clara, California, and Signature Bank of New York.


The collapse of Silicon Valley is the second-largest bank failure in US history, with contagion quickly spreading to other bank stocks, and high tensions prompting US President Joe Biden to make a public statement to reassure people across the nation that their money was safe.

The fact the President of the United States felt the need to step in underscores how high the stakes are. So what is a bank run? And why do perceived issues at one institution often have knock-on effects for others?

The answer lies in confidence and trust.

When everything’s going well, you have confidence in your bank, everything is fine and there’s nothing to worry about. Take away just a little of that – perhaps you see a tweet that your bank might be in difficulty or a news report that it’s been amassing bad assets – and you risk a loss of trust in the whole financial system.

If you lose confidence, you’re very likely to want to take your money out. And if you’re feeling that way, it’s very likely that others are too. That upends the whole system, which relies upon not everyone needing all of their money at exactly the same time.

Fear quickly spreads from one bank to another, and one person to another, and soon enough, queues to withdraw money – whether in person or online – build up, compounding the issue and putting the entire system under pressure. The bank might not have enough reserves to cover everyone’s withdrawals.

That’s what happened on 9 March, when Silicon Valley Bank – a lender that specialized in banking services for technology companies – faced withdrawals of $42 billion and was left with a negative cash balance.

In this case, the loss of confidence was spurred by the bank announcing a loss of around $1.8 billion from a sale of investments, including US treasuries and mortgage-backed securities – assets it needed to offload in the face of higher interest rates.


To stop the contagion spreading across the banking system, the Treasury department, Federal Reserve, and Federal Deposit Insurance Corporation took control of the assets at SVB and at Signature Bank, a bank with a lot of crypto exposure. They also put out a joint statement guaranteeing all deposits, but stressing that no losses would be borne by the taxpayer.

“Americans can have confidence that the banking system is safe,” Biden said. “Your deposits will be there when you need them.”

Small businesses could breathe easy, he said, knowing they can pay their bills and their employees.

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