The difference between volatility and risk

Investing
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Confusing volatility with risk can cause stress and heavy financial losses. Here, we explain the difference between the two.

12 September 2024 | 3 minute read

One of the most common mistakes investors make is to confuse volatility with risk.

At best, it leads to unnecessary stress and worry, and at worst, it can lead to heavy financial losses. It is therefore vital that investors understand the difference between the two.

 
 
     
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What is volatility?

At its simplest, volatility is a way of describing the degree by which share price values fluctuate. In volatile periods, share prices swing sharply up and down, while in less volatile periods their performance is smoother and more predictable.

Risk, on the other hand, is the chance of investments declining in value. How much investment risk you’re able to take on depends on a range of factors, most notably how long you’re investing for.

Interpreting volatility as ‘risk’ is a misjudgement often caused by watching your stock portfolio too closely. In one sense, this is perfectly understandable. The stock market can be a risky place to be in the short term, and watching the value of your life savings jump around from day to day can be gut-churning.

Taking the long view

Investing in the stock market requires a long-term perspective. History shows that over periods of ten or more years, equities generally outperform cash.

The graph below shows how different asset classes have performed compared to cash. Any balanced portfolio consisting of a mix of stocks and bonds, for example, would have outstripped cash returns by a good margin over the long term. Of course, investing comes with more risk than holding your money in a cash account, your investments may lose as well as gain value, and there are fees to consider. The best way to preserve your portfolio over the long term is to diversify your investment.

Long term investing graph


Source:RBC Brewin Dolphin / LSEG Datastream

Neither simulated nor actual past performance are reliable indicators of future performance. Performance is quoted before charges which will reduce illustrated performance.

The past few decades have seen their share of market volatility. We have endured the recession of 2001, the market bottoming out in 2003, and the financial crisis of 2008/9, when markets were swinging up and down by 4% or 5% a day. More recently, in March 2020, stock markets suffered huge crashes as the spread of Covid-19 led to fears of a global recession.

Investors who took a short-term view may well have made a loss. The key is to remember that, over the long term, share price values tend to bounce back.

The benefits of volatility

Volatility can be a powerful force for good because these wild swings work both ways. For example, our research shows that missing the market’s five best days between December 1971 and August 2024 would have led to a 44% lower return than if you had remained invested throughout. Missing the best 20 days would have reduced returns by a staggering 84%. So, while stock market volatility may be stressful, history shows it is better to stay invested in bumpy times because long-term returns typically outweigh short-term losses.

Getting some financial advice can help you invest objectively and rationally, and avoid knee-jerk reactions. By staying calm and focusing on the long term, you’ll reduce your chances of making a costly mistake.


Based on consumer price index (CPI) data
Based on Bank of England base rates


 
 
     
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The value of investments, and any income from them, can fall and you may get back less than you invested. Neither simulated nor actual past performance are reliable indicators of future performance. Performance is quoted before charges which will reduce illustrated performance. Information is provided only as an example and is not a recommendation to pursue a particular strategy. Information contained in this document is believed to be reliable and accurate, but without further investigation cannot be warranted as to accuracy or completeness.

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