What could a weak pound mean for FTSE investors and LSE shares?

Sterling has been falling hard all week. And a weak pound is likely to affect the economy and many FTSE shares.

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.

The pound has been on a steep downward trajectory over the past several days. Jitters have sent the value of our currency to levels not seen since 1985. I have had several friends tell me that they’re worried about the potential effect of a weak pound on their FTSE 100 portfolios.

Therefore today I want to discuss how the choppiness in the exchange rate may affect economic life in UK as well as the value of British companies in your portfolio.

How the pound has fared

Financial markets hate uncertainty. And the health and economic developments surrounding the novel coronavirus are less than certain at this point. In addition to a global equity market crash, the Covid-19 outbreak has also caused considerable volatility in exchange rate markets. 

As I write, the pound-to-US dollar rate has been leading the sterling rout. On 18 March, it plunged about 5% and fell beneath 1.15. And plenty of City analysts expect it to tumble even further.

The weak pound is also a result of an increased global demand for the greenback. Most investors are well aware of how panic has set in across equity markets worldwide. And the uncertainty is clearly benefiting US bonds and the dollar at the expense of most other currencies and asset classes. 

The pound had actually been suffering for about four years. Following the Brexit referendum result in June 2016, its dramatic fall started. The value of sterling relative to the US dollar fell from about $1.47 to $1.22 in just five months after the referendum.

After the referendum, it also fell sharply against other currencies, especially the euro. On 22 June 2016, the pound was about 1.30 to the euro. In November 2016, it was about 1.16. As of 21 March, it is hovering around 1.08.

Then as the no-deal Brexit fears began to recede in late 2019, sterling started showing strength and remained better supported. But the recent viral outbreak has changed the dynamics in the currency market.

A weak pound may not be all bad

In simple terms, a devaluation of the pound would make British goods cheaper to buy, potentially boosting the amount of UK exports overall.

That said, a weaker pound makes imported raw materials more expensive. And the increased costs eventually get passed down to the consumer.

But most of the companies in the FTSE 100 are multinational conglomerates and up to three-quarters of their revenue comes from overseas. 

Therefore, when the pound falls, especially significantly, their sterling-denominated earnings rise considerably. The dollars and euros they are earning outside the UK become worth more pounds, leading to an increase in profitability.

The effects of exchange rate movements tend to be less clear-cut for the companies in the FTSE 250 index as they usually have a more domestic focus. So they’re more directly affected by the short-term developments in the economy and consumer sentiment.

Foolish Takeaway

There are many reasons for exchange rates to move on a daily basis. And it’s anyone’s guess as to how the currently weak pound may react to various national or global developments in the rest of the year.

So what can the average investor do as currencies gyrate? I’d keep calm and keep investing regularly in good companies. If you’re unsure about selecting individual companies due to increased uncertainty an industry may face, then you could buy into a FTSE 100 tracker fund.

tezcang 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

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Can someone invest like Warren Buffett with a spare £500?

Christopher Ruane explains why an investor without the resources of billionaire Warren Buffett could still learn from his stock market…

Read more »

Investing Articles

Can these 2 incredible FTSE 250 dividend stocks fly even higher in 2026?

Mark Hartley examines the potential in two FTSE 250 shares that have had an excellent year and considers what 2026…

Read more »

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

Is 45 too late to start investing?

Investing at different life stages can come with its own challenges -- and rewards. Our writer considers why a 45-year-old…

Read more »

Hand of person putting wood cube block with word VALUE on wooden table
Investing Articles

UK shares look cheap — but the market might be about to take notice

UK shares have traded at a persistent discount to their US counterparts. This can create huge opportunities, but investors need…

Read more »

Investing Articles

This FTSE 100 growth machine is showing positive signs for a 2026 recovery

FTSE 100 distributor Bunzl is already the second-largest holding in Stephen Wright’s Stocks and Shares ISA. What should his next…

Read more »

Investing Articles

I asked ChatGPT for the best FTSE 100 stocks to buy for passive income in 2026 and it said…

Paul Summers wanted to learn which dividend stocks an AI bot thinks might be worth buying for 2026. Its response…

Read more »

ISA Individual Savings Account
Investing Articles

Stop missing out! A Stocks and Shares ISA could help you retire early

Investors who don't use a Stocks and Shares ISA get all the risks that come with investing but with less…

Read more »

Investing Articles

Will Greggs shares crash again in 2026?

After a horrible 2025, Paul Summers takes a look at whether Greggs shares could sink even further in price next…

Read more »