Financial crises and systemic risk

Market failure in the financial sector can severely affect an entire economy, often leading to widespread economic disruption. A key issue is the potential for a financial crisis to create systemic risk, where problems in one area spread and threaten the stability of the whole financial system or even global markets.

Features of financial crises

Financial crises involve sudden events such as sharp declines in asset values, like shares or property prices, or governments failing to repay debts. These crises typically follow periods of economic growth characterised by low borrowing costs, readily available loans, high levels of speculation, and excessive optimism. Unlike standard recessions, recovery from financial crises tends to be slower due to the deep impact on confidence and lending.

How systemic risk develops

Systemic risk arises when an issue in one part of the financial sector causes a chain reaction, potentially leading to the collapse of entire markets or systems. Problems can escalate rapidly across borders, transforming local issues into major global challenges.

Speculation and market bubbles

Speculation involves purchasing assets at a low price with the intention of selling them later at a higher price to generate profit. While it can drive market activity, it also introduces significant risks, particularly when it leads to unsustainable price increases known as market bubbles.

Risks associated with speculation

• Speculators face losses if asset prices drop unexpectedly, which can amplify market volatility.
• Overly optimistic predictions about future price rises can inflate asset values beyond their actual worth, creating bubbles.
• When confidence evaporates, investors sell off assets en masse, causing prices to crash and leaving many with substantial debts, especially if loans were used to buy the assets.

How market bubbles form and burst

Bubbles often develop during times of easy credit, where banks lend freely, encouraging excessive buying. As more investors join in expecting continual price growth, they may pay inflated amounts, detaching prices from real value. The burst occurs when doubts arise, prompting a rush to sell, which drives prices down sharply and can lead to widespread financial distress.

Causes and impacts of the 2008 financial crisis

The 2008 financial crisis serves as a major example of market failure in the financial sector, triggered by a combination of speculative behaviour and risky lending practices, with effects felt worldwide.

Key causes of the 2008 crisis

• A speculative bubble emerged in the US housing market, fuelled by growth in sub-prime mortgages, which were loans given to borrowers with weak credit histories.
• House prices soared due to high demand, but many borrowers could not afford repayments, leading to widespread defaults.
• As defaults increased, house prices collapsed, devaluing assets held by banks.

Major impacts of the crisis

• Banks experienced significant reductions in their capital, limiting their ability to lend and causing a credit crunch where loans became scarce.
• This led to a broader loss of confidence among consumers and businesses, reducing spending and aggregate demand.
• The result was a severe recession, marked by falling economic output and prolonged recovery periods.

Negative externalities in financial markets

Negative externalities occur in financial markets when the actions of financial institutions impose costs on the wider economy that are not reflected in their private decisions. These externalities highlight the interconnectedness of banks and the broader economic system.

Causes of negative externalities

One main cause is the mismanagement of risks by financial firms, where poor decisions lead to wider economic harm. For instance, during crises like 2008, governments often use taxpayer funds to bail out failing banks to prevent systemic collapse.

Examples of negative externalities

• Large reductions in gross domestic product (GDP) as economic activity slows.
• Declines in average salaries due to business cutbacks and reduced consumer spending.
• Sharp increases in unemployment as firms lay off workers amid falling demand.

The concept of 'too big to fail' and asymmetric information

Some banks grow so large that their failure poses a systemic risk to the entire economy, leading to the 'too big to fail' issue. Additionally, asymmetric information in financial transactions can exacerbate market failures by creating imbalances between parties.

Implications of 'too big to fail'

• These banks are so integral that their collapse could trigger panic, bank runs, and a breakdown of the financial system.
• Governments often intervene with bailouts costing billions to stabilise the sector, even if it means using public funds.
• This creates a moral hazard where banks might take excessive risks, knowing they are likely to be rescued.

Asymmetric information

Asymmetric information happens when one side of a deal has more knowledge than the other, such as borrowers knowing their repayment ability better than lenders. This leads to two key problems: adverse selection and moral hazard.

Problems caused by asymmetric information

• Adverse selection:
  • Occurs when sellers attract high-risk buyers they would prefer to avoid, leading to unintended risks.
  • Common in insurance, where high premiums deter low-risk customers, leaving companies with mostly high-risk clients who are unprofitable.
  • Increasing premiums worsens the issue, as only the riskiest individuals continue to buy coverage.
• Moral hazard:
  • Arises when parties take greater risks because others bear the consequences.
  • For example, a bank might issue high-risk loans if it expects a government bailout in case of failure.