What Is Market Volatility?

Reviewed by Ed WilkinsonLast updated: April 27, 2026 4:55 pm

a person sitting with a tablet that is showing a market downturn

In this article:

Understanding Market Volatility: Implied Volatility, Emerging Markets & More
Causes of Market Volatility
Measuring Market Volatility
Volatility and Investment Strategies
A Financial Adviser Can Help

Market volatility is an inherent feature of financial markets. It describes how quickly and how far prices move over time. Understanding volatility can help investors and analysts make more informed decisions about buying, selling or holding assets. This article explains what drives volatility, how it is measured, and the ways it can affect investment decisions.

Understanding Market Volatility: Implied Volatility, Emerging Markets & More

At its core, market volatility is about price fluctuations. These can occur in any marketplace but are most commonly discussed in relation to shares, foreign exchange (FX), commodities and bonds. While volatility is often seen negatively because it is associated with uncertainty and risk, it can also present opportunities. Whether that is appropriate will depend on your objectives, time horizon and risk tolerance; volatility does not, in itself, predict direction or guarantee outcomes.

Types of Volatility

Historical Volatility: The statistical dispersion of past returns over a set period, typically expressed as the standard deviation of daily (or weekly) price changes. It is a backwards-looking measure that shows how drastically prices have moved in the past and can help contextualise current market conditions, especially during periods of stress.
Implied Volatility: A forward-looking estimate derived from option prices on an underlying security or index. It reflects the market’s annualised expectation of future volatility over the option’s life and is a key input in options pricing. Rising implied volatility often accompanies falling share prices in equity markets.

Understanding Volatility in Practice

Understanding both types of volatility can help investors make more informed decisions. For example, an increase in implied volatility typically suggests that the market expects a wider range of potential price movements, which can affect options trading strategies. Historical volatility provides a record of price changes, offering a benchmark against which current market conditions can be evaluated.

Analysing periods of significant market volatility, such as those seen during the global financial crisis of 2008¹, the market turbulence related to the COVID-19² pandemic in 2020, or the stress in the UK gilt market in 2022³, shows how volatility spikes are often linked to widespread uncertainty and changes in investor behaviour. Such analysis helps with risk assessment and with preparing for potential future episodes by understanding patterns and triggers in market behaviour.

Moreover, by monitoring both historical and implied volatility, investors may better align their strategies with defined risk limits, helping to manage drawdowns in falling markets and to stay disciplined during recoveries. No approach can eliminate risk.

Volatility and Investor Sentiment

Investor sentiment plays a crucial role in shaping market volatility. Positive news about economic indicators or corporate earnings can quickly shift sentiment and reduce perceived risk, leading to lower volatility. Conversely, negative news can sour sentiment, increasing volatility. Sentiment indicators (for example, surveys, volatility indices and credit spreads) can be useful context, but should not be used in isolation.

Causes of Market Volatility

Several factors can cause or increase market volatility:

1. Economic Releases: Reports such as employment data, changes in GDP, and other indicators can move markets. For instance, inflation surprises or weak labour market data can have swift impacts. In the UK, Bank of England Bank Rate⁴ decisions and guidance are closely watched as potential drivers of volatility.
2. Geopolitical Events: Wars, elections and other political events can create uncertainty on a global scale, impacting markets.
3. Financial Crises: Events like the 2008 financial crisis can cause significant market volatility as investors react to uncertainty and fear. The economic impact of the COVID-19 pandemic saw global markets plunge in early 2020, followed by a rapid rebound, underscoring the volatile nature of financial markets in response to global crises.
4. Changes in Market Sentiment: Even without concrete changes in the economic landscape, shifts in investor sentiment can precipitate volatility. Social media and news cycles can influence sentiment, sometimes causing rapid swings in investor behaviour and market performance.
5. Technological Changes: Innovations and disruptions caused by technology can also influence market dynamics and lead to volatility. Algorithmic and high-frequency trading, as well as developments in fintech and blockchain, have introduced new factors that can amplify short-term price movements in some markets.

Additional Influences on Market Volatility

Aside from these primary factors, other elements also contribute to market volatility:

- Regulatory Changes: Legislative changes in financial regulation can have immediate effects on market behaviour. The introduction of stricter rules may aim to stabilise markets but can lead to short-term volatility as participants adjust.
- Monetary Policy: Decisions by major central banks to change interest rates, adjust money supply or use quantitative easing/tightening can significantly impact market volatility. Policy changes by institutions such as the Bank of England, the European Central Bank and the US Federal Reserve often influence global conditions.

Measuring Market Volatility

Market volatility is often measured using several key indicators:

The Volatility Index (VIX): Often called the “fear index”, the VIX estimates the stock market’s expectation of 30-day volatility derived from S&P 500 index options. Elevated readings typically coincide with greater uncertainty and, in equities, often with falling prices, but the VIX is not a timing signal.
Average True Range (ATR): This indicator measures market volatility by decomposing the entire range of an asset’s price for a period. The ATR can help traders understand typical movement and adjust position sizing and risk controls accordingly. A higher ATR value suggests a more volatile market.
Bollinger Bands: This tool uses a moving average and standard deviations to gauge how far prices are from a central tendency. Bands that widen indicate rising volatility. They can help assess whether prices are high or low relative to one another, but should be combined with other analyses.

Additional Volatility Measures

Beyond the widely recognised indicators, several other metrics can help gauge conditions and context:

Price Oscillators: Tools can highlight momentum and potential reversal points by comparing recent gains and losses. They do not measure volatility directly, but can complement volatility tools.
Moving Average Convergence Divergence (MACD): This trend-following momentum indicator shows the relationship between two moving averages of a security’s price. MACD can help identify changes in the strength, direction and duration of a price trend.

Used together, these indicators can help build a more complete picture of market conditions. No single measure is definitive, and indicators should be applied within a coherent risk management framework.

Practical Application of Volatility Indicators

Investors and traders often tailor their approach to prevailing conditions. During periods of high volatility, some shorten holding periods or use tighter risk controls; in quieter markets, others may focus on longer-term trends. Stop-loss orders can help manage risk, but are not guaranteed; prices may gap, and execution may occur at a worse level than expected.

By integrating appropriate tools into their risk management and trading processes, market participants can better navigate uncertainty and align actions with their goals and risk tolerance.

Volatility and Investment Strategies

Understanding and adapting to market volatility is a key aspect of effective investment management. Investors commonly use several approaches to manage the risks associated with volatility:

Diversification: Spreading investments across different assets, sectors and regions to reduce concentration risk. Diversification does not guarantee a profit or protect against losses, but it can help smooth the journey.
Hedging: Using instruments such as options or futures to offset potential losses elsewhere in a portfolio. Derivatives are complex, can be high risk and are not suitable for everyone. Please ensure you understand the risks and costs, and consider seeking regulated advice if you’re unsure.
Asset Allocation: Adjusting the mix of assets to align with risk tolerance and time horizon. Periodic rebalancing helps keep a portfolio aligned to its strategic aims.

Enhanced Techniques for Managing Volatility

In addition to foundational strategies, some investors consider the following techniques:

Dynamic Asset Allocation: Adjusting the asset mix as markets evolve to respond to changing risks and opportunities. This is more active and can increase trading costs and tracking error versus a benchmark.
Utilising Low-Volatility Funds: Funds that target securities with historically lower fluctuations can reduce overall portfolio variability. Lower volatility does not mean low risk or guarantee smaller losses; such funds may lag in strongly rising markets. Check methodology and costs.
Implementing Stop-Loss Orders: Setting predefined exit levels can limit downside, but orders may be executed at worse prices in fast-moving markets (slippage), and gaps can occur.

Considerations for Long-Term Investment Strategies

Maintaining a long-term perspective can help avoid reacting to short-term noise. Markets have often delivered positive returns over extended periods; however, past performance is not a reliable indicator of future results, and your capital is at risk.

Staying informed about current economic conditions and credible forecasts can provide useful context. Monitoring factors such as Bank of England interest rate decisions, inflation releases, and corporate earnings can help fine-tune strategy without overreacting to headlines.

Keeping abreast of regulatory changes can also help you make compliant, well-informed decisions. When you use professional help, consider firms authorised and regulated by the Financial Conduct Authority (FCA).

A Financial Adviser Can Help

Given the complexities and risks associated with market volatility, regulated financial advice may help if you are unsure how to position your portfolio. A qualified adviser can assess your circumstances, objectives and risk tolerance and recommend an approach that is suitable for you. Fees will apply and suitability will depend on your individual situation.

FinancialAdvisers.co.uk can connect you with an adviser at a firm authorised and regulated by the FCA in your area. If you choose to take advice, you will agree the scope of work and fees directly with the adviser. This article provides general information only and does not constitute personal advice. Investments can go down as well as up, and you may get back less than you invest.

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