Share your opinion and earn yourself a free Motley Fool premium report!

We are looking for Fools to join a 75 minute online independent market research forum on 15th / 16th December.

To find out more and express your interest please click here

Why the FTSE 100 is down despite Brexit optimism – and what I would do now

Being selective and understanding asset correlation is important in the current market, says Jonathan Smith.

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.

Last week was a turbulent one for the financial markets, as it tried to stay one step ahead of political developments around Brexit. From early in the week, there were headlines coming out regarding a possible new agreement, which was confirmed by the UK and the EU on Wednesday.

However, in a showdown in the House of Commons on Saturday, an intriguing amendment was voted through (322 votes to 306), which meant the Prime Minister unexpectedly pulled the vote on the new deal. 

Yet when the markets closed on Friday (before the action in Westminster on Saturday), optimism was still fairly high. The pound (GBP) was up over 4% against the US Dollar that week, and UK bonds were up, yielding over 0.7%. The FTSE 100, unfortunately, was down 100 points from the Monday open. If you were left scratching your head, you were not alone.

Why the FTSE 100 index fell

Simply put, the FTSE 100 fell in large part due to the rally seen in the currency and bond markets. This is because historically when the currency rises in value, and when the bond market rallies, the stock market falls. City analysts call this a historical negative correlation. I prefer to call it an unavoidable annoyance. 

Let’s look at the currency for example. Over 70% of FTSE 100 companies are net exporters, meaning the increased value of the pound is bad for business. Why? 

Imagine you are the CEO of a large clothing firm that manufactures in the UK and sells in France. You receive your revenue in euros but have costs here in Britain. Therefore, you sell your euros into pounds when needed. Now, because the pound has risen in value, this makes the euro weaker. So when you sell your euros back into pounds, you get less oft them than you did previously. Not great.

In the bond markets, the expected future interest rate increased as traders smelt Brexit optimism. As most of the FTSE 100 companies have some form of debt, an increase in anticipated interest rates (or no chance of a rate cut) means the cost of financing debt will not get cheaper. 

Let’s go back to our clothing firm — imagine you wanted to issue some new debt to buy a bigger factory. The move in the bond markets this week would mean you have to offer investors a higher rate of interest than previously thought, costing you more money in interest payments.

Seeking opportunities 

I would play this move in two ways. Firstly, I would buy domestic-driven companies that will benefit from a stronger pound. Secondly, I would buy companies with limited debt, that won’t suffer from rising rates.

Do not be put off by the fact that the index by itself is down, this is merely the sum of all the companies derived from the index. You are still able to find good value by applying the two parameters I mention above. 

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

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

Can the Rolls-Royce share price do it again in 2026?

Can the Rolls-Royce share price do it again? The FTSE 100 company has been a star performer in recent years…

Read more »

Businessman hand flipping wooden block cube from 2024 to 2025 on coins
Investing Articles

After huge gains for S&P 500 tech stocks in 2025, here are 4 moves I’m making to protect my ISA and SIPP

Gains from S&P tech stocks have boosted Edward Sheldon’s retirement accounts this year. Here’s what he’s doing now to reduce…

Read more »

View of Lake District. English countryside with fields in the foreground and a lake and hills behind.
Investing Articles

With a 3.2% yield, has the FTSE 100 become a wasteland for passive income investors?

With dividend yields where they are at the moment, should passive income investors take a look at the bond market…

Read more »

Smart young brown businesswoman working from home on a laptop
Investing Articles

Should I add this dynamic FTSE 250 newcomer to my Stocks and Shares ISA?

At first sight, a UK bank that’s joining the FTSE 250 isn’t anything to get excited by. But beneath the…

Read more »

Investing Articles

£10,000 invested in BT shares 3 months ago is now worth

BT shares have been volatile lately and Harvey Jones is wondering whether now is a good time to buy the…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

After a 66% fall, this under-the-radar growth stock looks like brilliant value to me

Undervalued growth stocks can be outstanding investments. And Stephen Wright thinks he has one in a company analysts seem to…

Read more »

Content white businesswoman being congratulated by colleagues at her retirement party
Investing Articles

Don’t ‘save’ for retirement! Invest in dirt cheap UK shares to aim for a better lifestyle

Investing in high-quality and undervalued UK shares could deliver far better results when building wealth for retirement. Here's how.

Read more »

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

1 growth and 1 income stock to kickstart a passive income stream

Diversification is key to achieving sustainable passive income. Mark Hartley details two broadly different stocks for beginners.

Read more »