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 FTSE 100 index is up 21% in 2025. But here’s the average return over the last 20 years

The FTSE 100 index has stormed higher this year. Does this mean that returns for investors going forward could be underwhelming?

| More on:
Businessman using pen drawing line for increasing arrow from 2024 to 2025

Image source: Getty Images

You’re reading a free article with opinions that may differ from The Twelfth Magpie’s Premium Investing Services. Become a member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn more, and get a free 'Best Buy Now' stock!.

The FTSE 100 index is enjoying a hot streak at present. This year, the large-cap index has gained approximately 21% (not including dividends).

While this is obviously great news for those in FTSE 100 tracker funds, it’s worth pointing out that this return is well above the average return from the Footsie over the last 20 calendar years. So, what does that mean for returns from here?

Should you buy London Stock Exchange Group Plc 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.

Average FTSE 100 returns

Historical FTSE 100 data isn’t that easy to find. However, I keep a spreadsheet with the total returns (gains plus dividends) for every year over the last few decades and I monitor it regularly to see how the index is performing over the long run.

According to my calculations, over the last 20 calendar years (2005 to 2024) the FTSE 100 delivered a total return of about 243%. That translates to an annualised return of approximately 6.4%.

So right now, the Footsie is on course to smash its long-term average.

Let’s say that the index finished this year at current levels and that dividends took the total return for 2025 to 24%. In this scenario, we’d be looking at almost four times the average annual return over the last 20 calendar years.

Now, just because a stock market index has a strong single year doesn’t mean that it can’t have a good year the next. Sometimes, indexes put together back-to-back strong years.

But after a 20%+ gain this year and a near-10% gain last year, I wouldn’t be surprised if we were to see muted returns from the Footsie in 2026. In my view, a period of ‘mean reversion’ – where returns fall back towards the average – is a real possibility.

A stock picker’s market now?

So, what’s the best approach now? Well, I think that it could be worth focusing less on FTSE 100 tracker funds and more on individual Footsie stocks from here (in the medium term).

Ultimately, I reckon there will be plenty of individual stocks that outperform the large-cap index by a wide margin next year. To my mind, it’s now a stock picker’s market.

A Footsie stock to look at today

One stock in the Footsie that I like the look of right now (and believe is worth considering for a portfolio) is London Stock Exchange Group (LSE: LSEG). It’s one of the world’s leading providers of financial data today (serving banks and investment managers).

This stock hasn’t participated in the rally this year. Year to date, it’s down about 20%.

After this fall, it looks cheap (for a data/software company). Currently, the forward-looking price-to-earnings (P/E) ratio is 20.

Given that the company is now rolling out AI-powered solutions for its customers, I reckon it’s only a matter of time until it sees a valuation re-rating. To my mind, this stock could command a P/E ratio of 25+.

There are no guarantees that it will outperform the FTSE 100 next year, of course. If the company doesn’t show solid growth when it reports its earnings, its share price could remain under pressure.

I’m optimistic that the stock will provide market-beating returns, however. It’s worth noting that the average analyst share price target is £125 – about 35% above the current share price.

Edward Sheldon has positions in London Stock Exchange Group. 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

Investing Articles

Down 53% since May, is this SpaceX-backed UK stock now in the bargain bin?

The Filtronic (LSE:FTC) share price has come crashing back down to earth in recent weeks. Has the selling gone too…

Read more »

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

3,566 shares in this FTSE 100 stalwart earns a £1,443 second income

Stephen Wright sees Unilever's battered share price as an attractive option for investors looking for a second income to consider.

Read more »

Bus waiting in front of the London Stock Exchange on a sunny day.
Investing Articles

3 stocks I’m looking to buy in July

Stephen Wright’s stocks to buy list for July includes a specialist chemicals recovery play, a quiet infrastructure compounder, and an…

Read more »

ISA Individual Savings Account
Investing Articles

How do the government’s latest changes affect your Stocks and Shares ISA?

Stephen Wright explains what the new anti-circumvention rules mean for investors with uninvested cash in their Stocks and Shares ISAs.

Read more »

Businessman hand stacking up arrow on wooden block cubes
Investing Articles

Here’s how much I think Rolls-Royce shares will be worth by the end of 2027

Ken Hall is considering buying Rolls-Royce shares. But just how much further could the stock climb by the end of…

Read more »

Young woman holding up three fingers
Investing Articles

Looking for cheap stocks to buy under £1? Here are 3 quality UK businesses to consider

Always on the hunt for cheap stocks to buy, our writer identifies three appealing UK candidates with strong financials and…

Read more »

Rolls-Royce Hydrogen Test Rig at Loughborough University
Investing Articles

Could small modular reactors take Rolls-Royce shares to the next level?

Rolls-Royce Holdings is investing heavily in the development of mini nuclear power stations. But what could this mean for the…

Read more »

Investing Articles

Up 105% In 3 Months! Here’s Our Top Growth Stock For July 2026 [PREMIUM PICKS]

One AI tailwind just sent this stock up 105% in 3 months... and we think our top growth stock is…

Read more »