What is investment risk? What it really means and how to manage it

Half of savers with more than £10,000 say losing money is what puts them off investing. Investment risk isn't the same as losing everything, and stock markets are less risky than the headlines suggest. Here's what risk really means, how much you should take, and six simple ways to keep it in check.

Anyone making an investment will be familiar with the phrase ‘capital at risk’ – it will be slapped on every communication you receive. But ‘risk’ may conjure up different things to different people. Risk can even be your friend if you use it the right way.

That said, there is little doubt that risk is a major deterrent to stock market investment for many people. Boring Money’s 2026 Online Investing Report shows that 50% of savers with more than £10,000 agreed they are concerned about losing money - up from 42% in 2025. This fear of loss of capital is one of the biggest barriers to getting started with investing.

The problem is that stock markets often hit the headlines for the wrong reasons. While most of the time, they potter along quite happily, occasionally, they have significant movements. That’s when the ‘£500bn wiped off shares’ will hit the front pages. This is unhelpful in understanding the real risk inherent in stock markets.

What is investment risk?

The investment industry defines risk as volatility – how much share prices move up and down. Under this definition, an investment is considered high risk if its price moves around a lot, whereas if the price stays pretty consistent, it is less risky.

The below illustrates volatility by risk category:

This is not how most people view risk. For them, they are pretty comfortable with share prices lurching higher; it’s just the down bits they don’t like. For most investors, permanent loss of capital is their greatest fear. In this scenario, they end up with less than they started with, at the point at which they need their cash.

How do UK investors feel about risk?

Fundamental to investing is that with a greater acceptance of risk, there is a great opportunity for reward. However, most people don’t see risk in those terms. Most people see risk as something to be avoided.

Research from Boring Money’s 2026 Online Investing Report found that the main motivation cited to invest is to get ‘better returns’ – with 32% of people stating that this was the reason that prompted them to start investing in the first place.

But even amongst those who do invest, many are still uncomfortable around the idea of taking risk with money – 29% of investors agree with the statement: ‘I am comfortable taking on a lot of risk when it comes to my investments’.

Unsurprisingly, young investors are the least risk-averse – 58% of investors under 44 with £50,000 or more agree they are comfortable taking risk. But that still leaves a whopping 42% who are not. This means that younger people could be missing out on the opportunity to maximise their rewards over a lifetime of investing due to a fear of taking risk.

Risk aversion in general accelerates with age – peaking as people approach the ‘decumulation’ phase (preparing for retirement) between 55-64.

Aside from age, female investors are considerably more risk-averse than men across all age groups, with 47% strongly disagreeing with the idea of taking on ‘a lot of risk’ with their investments – driven especially by those aged 45 and above.

Is investing in the stock market risky?

Yes, stock markets go up and down, but over time they’re not as risky as you might imagine - and cash isn’t as safe as it looks. Barclays found that over the 20 years to 2024, cash lost 40.5% of its value after inflation, even with interest included. An illustrative portfolio of UK investments grew by 21.6% after inflation over the same period. [1]

Morningstar data shows that equities, which make up the lion's share of most investors' portfolios, have managed to return 7.4% per year after inflationTerm used to describe how quickly the prices of goods and services is rising over a period of time. In periods of high inflation, prices are increasing rapidly, whereas low inflation means prices are increasing by only a small amount. over the trailing 100 years (S&P 500An index that tracks the performance of the 500 largest publicly traded companies in the United States. It's often used as a benchmark for the overall global stock market. total real return, annualised). That’s in spite of two world wars, the Great Depression, the Cold War, a global pandemic, and a range of local economic crises.

Below is an illustration of the FTSE 100Also called “Footsie”, the name for the share index made up of the largest 100 companies by market capitalisation (total value of all shares) listed on the London Stock Exchange. index and MSCI World IndexA global index that tracks large and medium-sized companies from 23 developed countries around the world. - over a ten year period. As you can see, if you invested £1000 in the MSCI Index in Q3 2014 by Q3 2026, it would be worth £4,307.

Certainly, there are points along this journey where if you had invested at the wrong time and sold at the wrong time, you would have lost money.

The key here is timeframes. If you had a long enough time horizon, you would have seen good returns.

Equally, relatively few people talk about the risks of holding cash. Cash feels intuitively safe because investors get back what they put in. However, this neglects the impact of inflation. Over the past 20 years, you would need a £10,000 investment to grow to over £18,033.84 [2] to keep pace with the rising cost of living. It is far more difficult to do this if you hold all of your portfolio in cash.

What’s the difference between risk and uncertainty in investing?

Consulting psychologist Paul Davies says how most of us define the word ‘risk’ when it comes to investing is misleading. He suggests that ‘uncertainty’ may be a more accurate term to use instead.

In the video below our Founder & CEO Holly Mackay speaks to Paul about the psychological interpretation of risk:

Risk doesn’t communicate both sides of the investing story – it only communicates loss. When someone is choosing what to do with their hard-earned life savings, it’s unfair to only speak in terms of loss. ‘Uncertainty’ represents both the positive and the negative sides of investing.

Are some shares riskier than others?

Companies are not all the same, which means they do not carry the same risks. A large company, for example, will tend to be less risky than a small company. They will have a broader range of revenue streams, a more diverse client base, and operations worldwide. This makes them less risky than, for example, a company with two or three key clients and a single product.

It is also true to say that different sectors and regions may carry different risks. A company in the US will have different governance and reporting standards to companies in other countries with less developed capital markets. A hotel business dependent on consumer spending will be inherently riskier than a healthcare business, where demand is stable across economic cycles.

Equally – and this is an important point – companies with lots of expectation built into their share prices will be riskier than those on more realistic valuations. The problem in the technology boom and bust (also known as the dot-com bubble, that occurred between 1995 and 2002) was not, in most cases, that the companies were bad, it was that expectations for their future growth had become impossibly high.

How can I reduce investment risk?

So what do we know about managing investment risk? Well, crucially, ‘risk’ does not equate to losing it all. Even during some of the worst financial upheavals, such as the Global Financial Crisis in 2008 and the more recent market’s reaction to Liz Truss’s disastrous mini-budget, markets generally bounce back.

Below, we answer six common questions about how to manage investment risk.

1. Does investing for longer reduce risk?

The FTSE 100 fell 31% in 2008, but two years later it had fully recovered and then some. This was undoubtedly a problem for an investor who sold out during the dip, but for those who were able to hang in there until it had recovered, the damage to their portfolio was minimal (if any at all). Once again, it’s about your timeframes and avoiding being in a position where you need to sell your investments at a loss – i.e. becoming a “forced seller”. All stock market investment should be approached with a long-term time frame.

2. How does diversification reduce investment risk?

The greatest risk for investors is to have everything on red, and it comes up black. Stock market investment is not a casino and you shouldn’t risk it all on the spin of a wheel. Putting all your investments into a single company or sector – even if you think it’s a sure thing – is to be avoided, and it’s always best to diversifyThe process of spreading your investment portfolio across different asset classes, such as partially in shares and partially in bonds, in order to reduce risk. your portfolio. There are always risks you cannot anticipate.

With this in mind, choosing investments exposed to a wide range of geographies and sectors is an important means to manage risk. You can achieve this through a balanced collective fund. You may not get the euphoric highs of picking the one technology stock that goes to the moon, but neither will you get the (more likely) bust. With a diversified spread of investments, if any one of them underperforms or crashes, you’ll be able to offset the losses against other, better-performing investments in your portfolio.

Multi-assets funds are a great way to have a diversified portfolio and can be likened to an investment ready-meal. Instead of buying all the ingredients yourself and worrying about putting it together, you can outsource everything to an investment manager and have them do it for you.

Holly Mackay explains multi-asset funds below:

3. Can dividend-paying investments reduce risk?

Targeting companies that pay out a share of their profits to investors through dividendsA cash bonus shareholders get in return for investing in something. Dividends can be paid out on a monthly, biannual or annual basis. can be a tool to manage risk in a portfolio. It means you get back 4-5% of your investment each year, which is reassuring. Dividends have historically been a significant share of the return from stock markets. Investors can choose to reinvest dividends to buy more investments and this can be a powerful way to grow wealth over time.

Investment Trusts can be a good vehicle for income as they offer dividends, which you can think of as a cash bonus you get to say “thank you” for investing in them. But here’s the icing on the cake: a fund manager can set aside up to 15% of a trust’s income during successful years to boost dividends at times when it hasn’t performed so well. Thanks to this unique function, many Investment Trusts tend to consistently pay - and even increase - their dividends during periods of market turmoil, and are an attractive option for investors looking for a steady stream of income, particularly if they focus on trusts with a reputation for consistent dividend payments.

If that's what you're looking for then the AIC's Dividend Heroes are the optimal place to start.

4. Does investing regularly reduce risk?

Drip-feeding money into the stock market helps smooth out returns to investors. Investors will be buying at different price points, which ensures they aren’t investing large amounts of money when the stock market is very high (and therefore, potentially, about to fall). It may not see investors make more money, but it makes for an easier journey.

5. How often should I rebalance my portfolio?

Rebalancing should happen once or twice a year and it’s about restoring the original weightings of the investments in your portfolio. You can rebalance by adding any top ups or re-directing any regular saving instructions to areas that have become a smaller portion of the portfolio, or by selling investments in areas that have performed well. This is a good discipline in helping investors buy at lower prices and sell at higher prices.

6. Are funds less risky than buying individual shares?

Collective funds offer an easy and convenient way to invest, popular with novice and experienced investors alike. They’re a collection of investments chosen and run by a fund manager, so you benefit from the knowledge, skills, and experience of a professional. With thousands of funds available, you can invest in a mix of asset types such as shares and bonds to spread the risk around.

How much risk should I take with my investments?

There are plenty of online tools and calculators that can tell you how much risk to take based on your age, wealth and appetite for risk. There are investment providers out there that can match you with a risk level that is personalised to your appetite and comfort levels – a bit like online dating for investing. Many will also suggest a ready-made portfolio.

Generally speaking, portfolios designed for investors seeking higher risk will have a higher proportion in individual shares, as these are typically considered more volatile assets, whereas lower risk portfolios may have a higher allocation to bonds, as these are traditionally seen as low-risk. So Wealthify’s ‘Cautious’ portfolio typically contains around 90% low-risk investments, including bonds, whereas its ‘Adventurous’ portfolio has around 90% in high-risk investments, such as shares.

You can read more about ready-made portfolios and how they work in our beginner’s guide.

Every quarter, we track the performance of popular ready-made portfolios available to UK investors across different risk levels from low to high. Check out the latest results to see which portfolios came out on top here.

Risk can be on your side

Investors shouldn’t be nervous about stock market risk. It is an important part of the stronger long-term returns from stock markets. Stock markets will bounce around, but there are plenty of ways to mitigate this volatility and to build a portfolio that stays within your comfort levels.

---

[1] Barclays

[2] Bank of England