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

Investing Articles

Is 2026 the year the Diageo share price bounces back?

Will next year be the start of a turnaround for the Diageo share price? Stephen Wright looks at a key…

Read more »

Investing Articles

Here’s my top FTSE 250 pick for 2026

UK investors looking for under-the-radar opportunities should check out the FTSE 250. And 2026 could be an exciting year for…

Read more »

Yellow number one sitting on blue background
Investing Articles

Here’s my number 1 passive income stock for 2026

Stephen Wright thinks a 5.5% dividend yield from a company with a strong competitive advantage is something passive income investors…

Read more »

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

Should I sell my Scottish Mortgage shares in 2026?

After a strong run for Scottish Mortgage shares, our writer wonders if he should offload them to bank profits in…

Read more »

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

Down 35%! These 2 blue-chips are 2025’s big losers. But are they the best shares to buy in 2026?

Harvey Jones reckons he's found two of the best shares to buy for the year ahead, but he also acknowledges…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

State Pension worries? 3 investment trusts to target a £2.6m retirement fund

Royston Wild isn't worried about possible State Pension changes. Here he identifies three investment trusts to target a multi-million-pound portfolio.

Read more »

Smiling white woman holding iPhone with Airpods in ear
Dividend Shares

4 dirt-cheap dividend stocks to consider for 2026!

Discover four great dividend stocks that could deliver long-term passive income -- and why our writer Royston Wild thinks they’re…

Read more »

Young mixed-race woman jumping for joy in a park with confetti falling around her
Investing Articles

These fabulous 5 UK stocks doubled in 2025 – can they do it again next year?

These five UK stocks have more than doubled investors' money as the FTSE 100 surges. Harvey Jones wonders if they…

Read more »