We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

3 things that could trigger a new stock market crash

The UK stock market has been surprisingly resilient in the face of global economic turmoil. But could this period of optimism be coming to an end?

Hand flipping wooden cubes for change wording" Panic" to " Calm".

Image source: Getty Images

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.

I’m surprised that the Russian invasion of Ukraine did not trigger a stock market crash. There was only a brief FTSE 100 dip, which has already been reversed. And we’re still looking at a 10% rise over the past 12 months.

Saying that, the FTSE 250 has been on a slide since the start of 2022. So are smaller-cap investors leading the way down, and will London’s bigger index follow suit? Here are three things I think could send the stock market tumbling

XXX

Interest rate rises

Inflation and interest rates are both climbing. Central banks don’t want to dent any hopes of a post-pandemic economic recovery, so base rates have ticked up relatively conservatively.

But further rises should make other forms of investment look increasingly attractive, and could draw money away from the stock market. The five-year US Treasury yield, for example, is approaching 3%, which is attractive and very safe.

If inflation makes investors more nervous, we could see a move to safety in the coming months. All it might take is a shift in asset allocation by institutional investors, and we could face a bear market.

Stock market overvaluation

But FTSE 100 share prices have had a weak decade. And the lead index looks set for a 4% dividend yield this year. That means the stock market must be undervalued, surely? Well, I’ve been checking on various P/E estimates for stock market indices.

Right now, on a trailing 12-month basis, the FTSE 100 P/E stands at about 15.1. At the end of December 2019, just before the Covid-19 pandemic struck, it was around 16.3.

Is that very small fall in the value of UK stocks sufficient to cover the effects of the pandemic, the Ukraine war, and the havoc of soaring fuel prices? Maybe the stock market isn’t as cheap as it first seems.

Commodities fall

Some of today’s biggest FTSE 100 dividend yields come from miners. Rio Tinto, for example, is on a forecast yield of 10%. That is all on the back of rising commodities prices. Prices for iron ore and copper, for example, have almost doubled over the past five years. But have we reached the peak of the current cycle?

If demand should start to fall, mining dividends and share prices could drop. And that could add another knock-on effect to the stock market overall. Is it likely to happen? Soaring inflation and geopolitical upheaval are things that do tend to hit demand.

What should I do?

I know what I’m not going to do — I’m not going to panic and sell any shares. I’ve heard suggestions that analysts have predicted at least 10 of the last five stock market crashes. And even the ones they got right haven’t lasted for long.

I’ll keep on looking for shares in great companies at what I consider fair prices. And every time I have enough spare cash, I’ll buy. And if we get a crash, I’ll buy at even cheaper prices.

Alan Oscroft has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. 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

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »