Why Brexit isn’t the biggest risk facing your portfolio

While Brexit could hurt share prices, a bigger risk may be just around the corner.

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.

With the EU referendum now less than a month away, the polls are telling us one thing: it’s likely to be a relatively close result. This means there’s a real chance that in just a handful of weeks’ time, the UK will be preparing to no longer be a member of the EU and will seek to go it alone for the first time in a generation.

While this may be a considerable risk to the UK economy and to the FTSE 100 in the short run, it’s not the only risk which the FTSE 100 faces. In fact, investors in the UK face a much bigger threat which has the potential to cause significant volatility and a period of depressed share prices.

Interest rates

That risk is US interest rate rises. The first rate rise occurred in December and since then the S&P 500 and FTSE 100 have been hugely volatile. Furthermore, in the weeks and months following the rate hike of 0.25%, share prices came under such severe pressure that the Federal Reserve decided to delay further rate rises until the market was in a more settled state. And with it apparently being so at the present time, there seems to be a good chance that the Federal Reserve will raise rates next month.

Although the impact of the next rate rise may not be as significant as the first, it’s still likely to change investors’ perceptions of the outlook for the US and global economy. While the US economy is continuing to post strong economic data on the whole, there’s a real risk that a tighter monetary policy will act as a brake on further progress. And even though the Federal Reserve is at pains to point out to investors that it’s not seeking to raise rates any faster than they need to, such rises still bring a huge amount of uncertainty to global stock markets.

A key reason for this is that it could be argued the bull run that has occurred since the credit crunch has largely been due to the availability of cheap money. In other words, the US economy hasn’t been forced to exist in more ‘normal’ economic times for a number of years, since an interest rate of near-zero encourages spending, borrowing and investing. However, all those things are set to gradually become less attractive and this should naturally cause at least a degree of pressure on the economic outlook.

Certainly, Brexit has the potential to hurt investor sentiment in the short run as it brings uncertainty. This doesn’t mean it’s necessarily a bad thing in the long run, but because it’s an unprecedented event it’s likely to make the investment world somewhat nervous. But the real danger to investors’ portfolios could turn out to be US monetary policy, even though Brexit, not a more hawkish Federal Reserve, seems to be dominating the financial news headlines.

More on Investing Articles

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Warren Buffett profited massively from nervous markets. Here’s how!

With market turbulence making some investors nervous, our writer recalls several moments when Warren Buffett did well despite fearful markets.

Read more »

Close-up as a woman counts out modern British banknotes.
Investing Articles

How to target a 14%+ dividend yield by investing £10,000

There are many strategies for the average investor targeting a 14% dividend yield or higher. Our Foolish author explores one…

Read more »

Arrow symbol glowing amid black arrow symbols on black background.
Investing Articles

Up 6%, can this ‘gritty’ stock continue outperforming the rest of the FTSE 250?

ITV's share price is soaring as investors react to a resilient performance in 2025. The question is, can the FTSE…

Read more »

Investing Articles

How much income could £20k in a Stocks and Shares ISA give you today?

As the clock ticks on this year's Stocks and Shares ISA allowance, Harvey Jones looks at how investors could use…

Read more »

Investing Articles

What next for the Endeavour Mining share price after a record-breaking set of results?

Since March 2025, Endeavour Mining’s share price has risen 175%. Do the gold miner’s latest results provide any clues as…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

How are Rolls-Royce shares looking in March 2026?

March promises to be an interesting time for Rolls-Royce shares, but should investors be worried or calm about developments?

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

3 these stocks are smashing BAE Systems shares – are they worth considering today? 

Harvey Jones looks at the impact of current events on BAE Systems shares this week, and highlights some FTSE 100…

Read more »

Santa Clara offices of NVIDIA
Investing Articles

At a forward P/E of 17, is Nvidia stock now a screaming buy?

Stephen Wright outlines why Nvidia stock could be better value now than it has been in a long time, despite…

Read more »