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.

The Hidden Nasty in Your FTSE 100 Tracker

50% of your FTSE100 investment is at risk

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 can understand the allure of a passive investment vehicle such as an FTSE 100 (FTSEINDICES: FTSE) index-tracking fund.

Heck, it’s hard work researching and monitoring investments in individual companies, and any one company could perform badly. For safety, the argument goes, we should diversify by investing in several firms. The trouble then is that the workload increases, so it’s clear to see the mental leap into the ‘wisdom’ of investing in a passive tracker — diversification is sorted; trading costs are reduced, human error and bad decisions are eliminated, and it gives you plenty of time to sit back, toes in the sand, with a pineapple daiquiri in hand.

XXX

What could possibly go wrong? I’ll tell you…

Strong and weak sectors

Companies are not all the same. Some are better than others because they operate in better, more resilient sectors. Some industries remain strong no matter what the macro-economic environment throws at them. I’m thinking of sectors such as pharmaceuticals, consumer goods, utilities, tobacco and food retail.

The companies in those sectors tend to remain steady, generating cash flow and paying dividends right through the full turn of economic cycles: companies such as GlaxoSmithKline, SABMiller and National Grid.

Some industries buckle under the onslaught of wintry economic conditions. I’m thinking of sectors such as banking, financial services, commodities, non-food retail, airlines & tourism and house builders.

Within the FTSE 100, the companies in sectors that are vulnerable to cyclical downturns can buckle at the knees when economies dive, slashing their dividends, often scrabbling for capital to repair their balance sheets, and watching their share prices plummet to astonishing lows — companies such as Lloyds Banking Group, Rio Tinto and Marks & Spencer Group.

Disturbing bias

If you add up the market capitalisations of all the companies in the FTSE 100, the combined value stands at about £1,848bn. However, firms from the cyclical sectors make up around £925 billion, almost exactly 50%, of that figure. That’s a shockingly large weighting to the cyclicals and the hidden nasty in your FTSE 100 tracker.

If I wanted to put together a diversified portfolio of shares that could reflect steady growth over years, perhaps to build up a retirement fund, I’d probably avoid the cyclical sectors and companies altogether. Yet, investing in a passive index following the FTSE 100, whilst offering diversification, forces this overweight participation in the cyclicals. And right now is not the time to invest in cyclicals, I’d argue.

Not to buy and hold

The price-to-earnings ratio (P/E) of London’s senior index is around 14.1 and produces a dividend yield of 3.4%. By conventional interpretation that seems like reasonable value.  But is it good value, at this stage of the unfolding macro-economic cycle, for the 50% of the FTSE 100 index generated by cyclical companies?

Stock markets look ahead, and that means the share prices of cyclical firms look ahead, too. As macro-economic cycles mature and unfold into a period of growth, such as now, cyclical company share prices tend to look for the next occurrence of peak-earnings. That will precede the next cyclical decline into the next economic contraction and falling profits for the cyclicals. Share prices in cyclical sectors tend to discount rising profits ahead of the next profit fall, so we see falling forward P/E ratings and a rising forward dividend yields, often presaging share price and dividend collapse.

It’s a roller coaster not worth riding over long periods and is one reason why cyclical share prices can really drag on the performance of the FTSE 100. As a comparison, the FTSE 250 trades on a P/E of about 19.2, suggesting it might have more embedded growth opportunity and less cyclicality within its ranks.

Stymied growth

With cyclical P/E ratings compressing as we work through the macro-economic cycle, any growth within the FTSE 100 index is up against this drag on upwards progress. I reckon the FTSE 100’s forward performance could be flatter than some other indices.

One thing’s for certain, if the macro-economic environment gets colder, the FTSE 100 is heading down, perhaps more so than some of the steadier, more defensive constituents within the ‘good’ 50% of its ranks. That potential exaggeration of movement makes the FTSE 100 a good vehicle for shorting when you judge the time is right, and for buying at cyclical bottoms, just as is the case for any individual cyclical firm.

The FTSE 100 index is most definitely not an investment vehicle to buy and hold for decades, I’d suggest there are much better index opportunities elsewhere for passive investment.

Kevin does not own shares in any companies mentioned in this article. The Motley Fool has recommended GlaxoSmithKline.

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 »