3 Warren Buffett investing rules that Neil Woodford broke

Neil Woodford was once known as ‘Britain’s Warren Buffett’. The problem is, he broke a number of Buffett’s key investing rules.

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.

There was a time when portfolio manager Neil Woodford could do no wrong. Regarded as Britain’s greatest stock picker just a few years ago, some people even referred to him as the UK’s Warren Buffett.

However, in the space of a few years, things have gone badly wrong for Woodford. After he was sacked as manager of his Equity Income fund last week, he may never work in the investment management industry again. With that in mind, here’s a look at three fundamental Buffett investing rules Woodford broke.

Never lose money

Let’s start with Buffett’s number one investing rule: “Never lose money.” Here, Woodford got it badly wrong. By investing a large proportion of his flagship fund in smaller, speculative growth companies, such as Purplebricks, Prothena, and Eve Sleep, he set himself up to fail as these types of companies are notoriously volatile by nature. You wouldn’t see The Sage of Omaha investing in these companies. 

One of the reasons Buffett has been so successful over the years is he’s placed a strong focus on capital preservation and kept losses to a minimum. He’s done this by focusing on high-quality, blue-chip companies with excellent long-term track records when it comes to generating shareholder wealth. If Woodford had adopted a similar strategy and focused more on risk management, he wouldn’t have experienced such dramatic underperformance.

Circle of competence

Another key rule of Buffett’s is that when investing in the stock market, it’s essential to stick to your ‘circle of competence’. In other words, stick to what you know. Woodford broke this rule too.

Woodford made his name investing in large-cap FTSE 100 stocks. For example, he loaded up on the tobacco giants when they were out of favour during the tech bubble, and he avoided the banks in the lead up to the Global Financial Crisis.

Yet, for some strange reason, he began investing in early-stage start-ups a few years ago. Investing in these types of companies is very different to investing in large-caps and it backfired in a big way. He clearly didn’t have the skill set required to be successful in this area of the market. Another Buffett quote comes to mind here: “Risk comes from not knowing what you are doing.”

Long-term investing

Finally, Buffett is known for his ability to hold stocks for a very long time. “If you aren’t thinking about owning a stock for 10 years, don’t even think about owning it for 10 minutes,” he’s said in the past. This is another reason he’s been so successful, as long-term investing tends to produce great results.

Woodford broke this rule too. For example, around June/July last year, Woodford bought back into British American Tobacco after selling the stock in 2017. Yet just a few months later, the stock was gone from his fund again. So he was no longer investing for the long term and, as a result, his performance suffered.

Ultimately, investing doesn’t need to be complicated. But if you want to be successful, it’s important to get the basics right. I’d argue that focusing on capital preservation, sticking to what you know, and investing for the long term are three of the most important things you can do.

Edward Sheldon has no position in any shares mentioned. 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

Santa Clara offices of NVIDIA
Investing Articles

£5,000 invested in Nvidia stock 6 months ago is now worth…

Nvidia stock's taking a breather at the moment. But it could be getting ready for its next move higher, says…

Read more »

British coins and bank notes scattered on a surface
Investing Articles

I hold Lloyds. Is it madness to buy Barclays shares too?

Harvey Jones is keen to buy Barclays shares but wonders whether he's simply doubling down, given that he already holds…

Read more »

Asian man looking concerned while studying paperwork at his desk in an office
Investing Articles

It’s time we all took a long, cold look at the Lloyds share price

The Lloyds share price has been good to Harvey Jones, making him a huge fan of the FTSE 100 bank.…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Warren Buffett didn’t retire early. But could his investing wisdom help you do so?

Warren Buffett's wisdom from decades of stock market investing is actionable even for a modest investor who simply aims to…

Read more »

Young female hand showing five fingers.
Investing Articles

5 compelling investment ideas for a Stocks and Shares ISA in 2026

Edward Sheldon discusses some ideas to consider for a Stocks and Shares ISA and highlights a UK stock that could…

Read more »

Man writing 'now' having crossed out 'later', 'tomorrow' and 'next week'
Investing Articles

Is this the best time to buy shares in a long time?

Earlier this week, Bill Ackman stated on X that this is the best time to buy shares in a long…

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

£1,000 buys 35 shares in an incredibly reliable FTSE 100 dividend stock

Despite falling 72% from their highs, shares in this FTSE 100 company have been an incredibly reliable source of dividend…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

This is what Warren Buffett has to say about passive income — and I’m listening!

While searching for new ways to earn passive income, our writer takes to heart sage advice from the Oracle of…

Read more »