Warren Buffett letter wisdom led me to sell this FTSE 100 share

Warren Buffett letters contain a wealth of investment advice. Here’s how I used that advice to decide what to do with a FTSE 100 share I held.

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.

Every year Warren Buffett releases his shareholder letter. It is publicly available for free online and contains a lot of investing wisdom. Buffett’s long-term investment record is one of the best in history, but his advice is helpful even to novice investors.

I have been looking back over some of Buffett’s old shareholder letters to help inform my own investment strategy. Since his last letter, reflecting on Buffett’s wisdom, I sold a holding in a large FTSE 100 company.

Warren Buffett emphasizes competitive ‘moats’

Warren Buffett talks a lot about moats. In medieval times, moats around castles made it harder for attackers to breach the castle ramparts. In investment terms, a competitive advantage can fulfil a similar function. Auto Trader is a good example. With its brand recognition and the network effect of large numbers of buyers and sellers congregating in one place, Auto Trader enjoys a business advantage which it is hard to undermine.

Moats matter because they help companies have pricing power and a captive audience.

But not all industries have moats. Natural resources is an industry where it can be hard to build a moat. Maybe a certain oil block gives economic advantages – but it’s hard to see a commodity like oil as having unique qualities competitors can’t replicate. Nonetheless, a well-run oil company can still establish some sort of competitive advantage, for example, by running a proprietary network of petrol stations as distribution outlets downstream.

When I bought Shell (LSE: RDSA, RDSB), it hadn’t cut its dividend since the Second World War. I was more attracted by that record than I ought to have been. After all, what matters to me as an investor is the likelihood of future dividends, not the certainty of past ones. When it did cut the dividend steeply last year, that hurt me as a dividend lover. I started to assess whether I ought to keep Shell or sell it.

I felt management messaging about the dividend was weak. However, Warren Buffett doesn’t always sell shares just because he is unimpressed by management. It’s the business he is more interested in.

But I also started to question whether Shell really had a moat going into the future.

Renewable energy focus

Shell, like some other oil companies, has been pushing hard to move from oil and gas to renewable energy sources such as wind. Indeed, the chief executive recently said that Shell would never again reach its previous levels of oil production.

But I don’t see where its moat is in green energy. Shell has a lot of expertise in oil, which it has gained over a century. It also has local expertise in areas like the North Sea and Nigeria. By contrast, alternative energy strikes me as a crowded field. Shell’s expertise in energy distribution could offer it a competitive advantage – but that is uncertain. Similarly, the company’s ability to deal with government and regulators in oil may be transferable to alternative energy. On the other hand, it may not work as well there.

In short, Shell is reshaping itself in a way which to me looks like it has less of a moat every year. That doesn’t agree with a Warren Buffett-style investment strategy. Like Shell itself, I decided to look elsewhere for new opportunities.

christopherruane has no position in any of the shares mentioned. The Motley Fool UK has recommended Auto Trader. 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

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

These 2 UK shares were stinking out my SIPP – now they’re flying! What next?

Harvey Jones has been given a very bumpy ride by these two UK shares. But now they're looking up and…

Read more »

Portrait Of Senior Couple Climbing Hill On Hike Through Countryside In Lake District UK Together
Investing Articles

I’ve just added this under-the-radar FTSE 100 stock to my SIPP

James Beard explains why he’s put this relatively unknown share in his Self-Invested Personal Pension (SIPP). And so far, he…

Read more »

Investing Articles

How much do you need in a Stocks and Shares ISA to target £1,500 a month in passive income?

This writer shares how he’s working to turn his Stocks and Shares ISA into a source of passive income, harnessing…

Read more »

Surprised Black girl holding teddy bear toy on Christmas
Investing Articles

Will Rolls-Royce shares be the gift that keeps on giving in 2026?

It's been another superb year for anyone holding Rolls-Royce shares. But Paul Summers wonders if a hefty price tag will…

Read more »

A rear view of a female in a bright yellow coat walking along the historic street known as The Shambles in York, UK which is a popular tourist destination in this Yorkshire city.
Investing Articles

£5,000 invested in Glencore shares in January 2025 is now worth…

I’m building my 2026 ISA and Glencore shares keep pulling me back. One chart shows why the miner’s earnings mix…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

How much do you actually need in an ISA to target £2,500 per month in passive income?

Dr James Fox believes all Britons should be using their Stocks and Shares ISAs if they have to means to…

Read more »

Portrait Of Senior Couple Climbing Hill On Hike Through Countryside In Lake District UK Together
Investing Articles

Aviva shares are up 42% in 2025 – can they repeat it in 2026 and boost your ISA?

Aviva shares jumped in 2025 – I’m tracking them in my ISA to see if dividends and growth can keep…

Read more »

Emma Raducanu for Vodafone billboard animation at Piccadilly Circus, London
Investing Articles

Analysts reckon the Vodafone share price is on the money. But I’m not so sure

James Beard disagrees with the consensus view of analysts, which predicts little movement in the Vodafone share price over the…

Read more »