Why are UK small-caps getting crushed right now?

UK small-cap stocks have fallen hard over the last week. Here are three reasons why.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

It’s been an extraordinary few weeks for UK small-cap investors, and not in a good way. The star category of the last few years, small-cap growth stocks have been absolutely smashed in recent trading sessions, with the FTSE AIM 100 index falling around 14% since the start of October (versus -6% for the FTSE 100).

Looking at my own portfolio of small-cap growth stocks, it’s pretty ugly. For example, identity specialist GB Group is down 15% this month. And email marketing group dotDigital is down 16% in that time. It’s no doubt frustrating seeing share prices plummet so quickly.

So, why are small-caps falling so sharply?

Indiscriminate selling

Well for starters, investors all over the world are indiscriminately dumping equities – both large and small – right now, because they’re panicking over rising US Treasury yields. The logic is, that with 10-year Treasury yields rising above 3.2%, investors can now get a return on their money without having to take on the risk of the stock market.

When global stock markets experience big sell-offs, it’s often smaller companies that suffer the most damage. Investors gravitate towards safe-haven assets and dump small-caps as they are seen as higher risk. This is an important thing to understand about smaller companies – while they can offer faster growth than larger companies, they also tend to be much more volatile.

Tech sell-off

Another issue is that US technology stocks are being sold off heavily right now. For example, Amazon is down 13% this month, as is Netflix. To be honest, this doesn’t surprise me, as valuations across the US tech sector have been extraordinarily high in recent years. This is something I warned investors about at the start of the year. With valuations so elevated (Amazon had a P/E ratio of 300 at one stage), there was always the potential for a correction.

Now, while the UK stock market generally isn’t known for its technology prowess, there are plenty of exciting UK technology companies in the small-cap space, like the two stocks I mentioned above. So a US tech sell-off is probably having a negative impact on many tech-focused UK smaller companies.

High valuations

Lastly, it’s worth noting that many small-cap growth companies in the UK have been trading at high valuations over the last few years. In this recent bull market, investors have been willing to pay higher multiples for exciting growth companies, and higher valuations (P/E ratios of 25+) became the new normal, to a degree. Investors forgot about risk. However, when stocks are trading at high valuations, it does leave them vulnerable to sharp corrections, and that’s what we’re seeing now.

What to do

Is it game over for small-caps? No, in my view. While we’re seeing some pretty extreme selling activity right now (which could last for a while), over the long term, smaller companies are likely to continue generating strong returns for investors, because they tend to grow quickly. The key, as always, is to not be overexposed to this section of the market. 

With many small-cap stocks being crushed in recent sessions, plenty of exciting companies are starting to look interesting, valuation wise. As such, it could be a good idea to draw up a wishlist of companies you’d like to own, with a view to drip-feeding money into the market… while other investors are panicking.

Edward Sheldon owns shares in GB Group and dotDigital Group. John Mackey, CEO of Whole Foods Market, an Amazon subsidiary, is a member of The Motley Fool’s board of directors. The Motley Fool UK owns shares of and has recommended Amazon and Netflix. The Motley Fool UK has recommended dotDigital Group. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

How to invest a Stocks and Shares ISA like a pro in 2026

The Stocks and Shares ISA is a powerful investment account. Here are some strategies used by professional investors to get…

Read more »

Investing Articles

£5,000 invested in BP shares could generate this much dividend income in 2026…

Andrew Mackie weighs up whether BP shares’ attractive dividend yield is reason enough for him to keep holding the stock…

Read more »

Investing Articles

In 2026, I think the FTSE 100 could pass 12,000

How could FTSE 100 replicate the success of 2025? Our Foolish author examines why the index might pass 12,000 in…

Read more »

Investing Articles

3 brilliant British shares to consider buying for 2026

If an investor is looking for shares to buy for 2026, they have plenty of great options whether the goal…

Read more »

Yellow number one sitting on blue background
Investing Articles

I asked ChatGPT to pick 1 growth stock to put 100% of my money into, and it chose…

Betting everything on a single growth stock carries massive danger, but in this thought experiment, ChatGPT endorsed a FTSE 250…

Read more »

Portrait of pensive bearded senior looking on screen of laptop sitting at table with coffee cup.
Investing Articles

How little is £1,000 invested in Diageo shares at the start of 2025 worth now?

Paul Summers takes a closer look at just how bad 2025 has been for holders of Diageo's shares. Will things…

Read more »

Aston Martin DBX - rear pic of trunk
Investing Articles

After a terrible 2025, can the Aston Martin share price bounce back?

The Aston Martin share price has shed 41% of its value in 2025. Could the coming year offer any glimmer…

Read more »

Close-up of British bank notes
Investing Articles

How much do you need in an ISA to target £3,000 per month in passive income?

Ever thought of using an ISA to try and build monthly passive income streams in four figures? Christopher Ruane explains…

Read more »