Here’s how Warren Buffett’s No.1 lesson can help investors as they try to turn £1 into £1m

Warren Buffett’s a billionaire investor, but his teachings might help even the most novice of investors become a millionaire through stocks and shares.

| More on:

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.

Mother At Home Getting Son Wearing Uniform Ready For First Day Of School

Image source: Getty Images

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.

Warren Buffett has amassed a net worth in excess of $140bn. However, his number-one lesson is as useful to you and me as it is to him. So what’s this great piece of advice? Well, it’s simple: “Don’t lose money”.

It’s hard to recover from a loss

I’m one of those weird people who works with Bloomberg TV on in the background all day. It’s certainly useful, but I always remember a clip from an old advertorial — which was shown probably every 30 minutes — in which, I believe, Bill Ackman says “If you lose 50%, you’ve got to go 100% to get back to where you started”.

It’s very obvious, but it’s something I think many novice investors overlook. Recovering from a loss on an investment, notably one as large as 50%, is very challenging and, for some investors, they may find it impossible.

Putting this lesson into practice

Putting these lessons into practice is, in part, straightforward. Diversification’s necessary to avoid losses having an existential impact on an investor’s portfolio. This doesn’t mean we can’t invest in high-reward stocks, but it means we hedge our bets by spreading risk.

The next step is investing in stocks with a margin of safety or a really strong value proposition — this is actually another Buffett lesson. For me, this tends to revolve around the price-to-earnings-to-growth (PEG) ratio as my focus is growth stocks. If the stock in question trades with a significant PEG discount to the wider sector, then it’s something I’ll consider.

Incremental gains

As such, the objective isn’t to invest all our money into one stock and hope for a multibagger. Instead, it’s about investing in a range of stocks with strong prospects with the objective of significantly beating the market.

So how can £1 turn into £1m? The answer’s with £500 of monthly contributions, 26 years, and an average return of 12% — that’s above average for novice investors, but many achieve much stronger growth.

One stock to consider

I keep banging on about a stock called Celestica (NYSE:CLS), but I think it’s a good example of how people can think about investing with a margin of safety. The Canadian company designs, manufactures and provides supply chain solutions for the electronics industry. And the stock’s recent surge has been driven by demand for its switches and routers — and other items — which are vital for data communications and information infrastructure, especially in artificial intelligence (AI).

Now trading for $110 a share, I first bought Celestica at $26, but I still think the stock offers good value. That’s simply because the company’s performance gets better and better while medium-term forecasts have improved. Even now, the stock trades with a PEG ratio of 0.91 — a 51% discount to the information technology sector average.

The company could definitely have stronger margins and there are reports that sales are quite concentrated among a handful of top customers. However, I still think this is a great stock and worthy of further research. I’d buy more but it already exceeds my own rules for concentration risk.

James Fox has positions in Celestica Inc. 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

ChatGPT thinks these are the 5 best FTSE stocks to consider buying for 2026!

Can the AI bot come up trumps when asked to select the best FTSE stocks to buy as we enter…

Read more »

Investing For Beginners

How much do you need in an ISA to make the average UK salary in passive income?

Jon Smith runs through how an ISA can help to yield substantial income for a patient long-term investor, and includes…

Read more »

Investing Articles

3 FTSE 250 shares to consider for income, growth, and value in 2026!

As the dawn of a new year in the stock market approaches, our writer eyes a trio of FTSE 250…

Read more »

Warren Buffett at a Berkshire Hathaway AGM
Investing Articles

Want to be a hit in the stock market? Here are 3 things super-successful investors do

Dreaming of strong performance when investing in the stock market? Christopher Ruane shares a trio of approaches used by some…

Read more »

Two white male workmen working on site at an oil rig
Investing Articles

The BP share price has been on a roller coaster, but where will it go next?

Analysts remain upbeat about 2026 prospects for the BP share price, even as an oil glut threatens and the price…

Read more »

Investing Articles

Prediction: move over Rolls-Royce, the BAE share price could climb another 45% in 2026

The BAE Systems share price has had a cracking run in 2025, but might the optimism be starting to slip…

Read more »

Tesla car at super charger station
Investing Articles

Will 2026 be make-or-break for the Tesla share price?

So what about the Tesla share price: does it indicate a long-term must-buy tech marvel, or a money pit for…

Read more »

Portrait of elderly man wearing white denim shirt and glasses looking up with hand on chin. Thoughtful senior entrepreneur, studio shot against grey background.
Investing Articles

Apple CEO Tim Cook just put $3m into this S&P 500 stock! Time to buy?

One household-name S&P 500 stock has crashed 65% inside five years. Yet Apple's billionaire CEO sees value and has been…

Read more »