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

Invest in solid FTSE 100 shares. But don’t forget about diversification!

Mitigating the risk of losing money remains important even when I am looking to invest in FTSE 100 shares with solid long-term potential.

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.

FTSE 100 shares are often thought to be akin to the US blue-chip stocks – resilient companies with strong brands and long-term business prospects. However, even when I look at the Footsie for potential opportunities, I keep in mind one thing: diversification. This is, in my view, the best defence against the chance of losing money.

Why diversify?

About four years ago, I lost close to £10,000 by investing in a single investment vehicle – a trust. A trust is a pooled, close-ended investment product that is listed on a stock exchange, which raises funds from investors to allocate into a number of companies. Despite the fact that this particular trust was invested in over 100 companies, I still lost all my money as it was all concentrated in a single product managed by one fund manager.

What I did wrong was to ignore the need to diversify or, as Warren Buffett once said, “not to put all my eggs in one basket”. Consequently, with the stock screener in front of me, looking through the FTSE 100 for shares that offer great long-term potential for a good price (value for money remains a key consideration!), I keep in mind the need to diversify.

In simple terms, diversification is the mitigation of market risk by spreading that risk accordingly. Applying this lens to the FTSE 100 universe, I spotted the following ways I could diversify my portfolio with Footsie stocks.

Diversifying my portfolio with FTSE 100 shares

First, I can diversify by buying shares in companies that operate in different sectors. What sectors exactly make up the FTSE 100 depends on what businesses reach the index, and this can differ across specific time frames. Right now, there are 11 sectors, including consumer staples, financials, industrials, materials and healthcare.

Some of these industries are more cyclical than others, each presenting a different business case for the long term. Therefore, looking to buy attractively valued shares in FTSE 100 shares across different sectors can act as a diversifier, in my view.

Secondly, I want to buy shares in companies that operate in different parts of the world, as not all economies are the same and some will fare better than others. For example, SSE and Tesco are UK-focused businesses while Unilever and Shell are more internationally focused.

Finally, I am looking to buy both an index fund that tracks the performance of the FTSE 100 index, thereby gaining exposure to the overall price movement of its constituents, as well as an actively managed product by a fund manager in whose investment vision and strategy I believe.

Therefore, even when looking at solid FTSE 100 shares, I always seek a way to diversify (reduce) the risk in my portfolio in order to mitigate the chances of losing my hard-earned savings.

Anton Balint has no position in any of the shares mentioned. The Motley Fool UK has recommended Tesco and Unilever. 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

Young woman holding up three fingers
Investing Articles

Want to start investing in 2026? 3 things to get ready now!

Before someone is ready to start investing in the stock market, our writer reckons it could well be worth them…

Read more »

Investing Articles

Can the stock market continue its strong performance into 2026?

Will the stock market power ahead next year -- or could its recent strong run come crashing down? Christopher Ruane…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

Here’s how someone could invest £20k in an ISA to target a 7% dividend yield in 2026

Is 7% a realistic target dividend yield for a Stocks and Shares ISA? Christopher Ruane reckons that it could be.…

Read more »

A quiet morning and an empty Victoria Street in Edinburgh's historic Old Town.
Investing Articles

How little is £1k invested in Greggs shares in January worth now?

Just how much value have Greggs shares lost this year -- and why has our writer been putting his money…

Read more »

Businessman using pen drawing line for increasing arrow from 2024 to 2025
Investing Articles

This cheap FTSE 100 stock outperformed Barclays, IAG, and Games Workshop shares in 2025 but no one’s talking about it

This FTSE stock has delivered fantastic gains in 2025, outperforming a lot of more popular shares. Yet going into 2026,…

Read more »

Close-up of British bank notes
Investing Articles

100 Lloyds shares cost £55 in January. Here’s what they’re worth now!

How well have Lloyds shares done in 2025? Very well is the answer, as our writer explains. But they still…

Read more »

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

How much do you need in an ISA to target £2,000 a month of passive income

Our writer explores a passive income strategy that involves the most boring FTSE 100 share. But when it comes to…

Read more »

Investing Articles

£5,000 invested in a FTSE 250 index tracker at the start of 2025 is now worth…

Despite underperforming the FTSE 100, the FTSE 250 has been the place to find some of the UK’s top growth…

Read more »