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.

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.

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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.

Should you buy Rolls Royce shares today?

Before you decide, please take a moment to review this report first. Despite ongoing uncertainties from US tariffs to global conflicts, Mark Rogers and his team believe many UK shares still trade at substantial discounts, offering savvy investors plenty of potential opportunities to learn about.

That’s why this could be an ideal time to secure this valuable research – Mark’s analysts have scoured the markets to reveal 5 of his favourite long-term ‘Buys’. Please, don’t make any big decisions before seeing them.

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.

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