We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

2 investing principles I’d follow to build a retirement portfolio

Investing with these two rules should help us build our retirement income.

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.

Everyone wants to build a solid portfolio that will support them in their retirement, but what does we need to know to do so? Knowing how to interpret financial statements and value companies is obviously important, but successful investors are more than just skilled accountants. The best investors have a set of rules or principles that they adhere to, and that guide them in their decision-making. Having well-defined guidelines will allow us to make the right choices even in cases where the specifics of a situation may be unclear.

Don’t worry about things we can’t predict

It is true that macroeconomic variables like interest rates, commodity prices and geopolitics affect the market in very significant ways. But it is also true that they are extremely difficult to predict, and there is quite a lot of evidence to suggest that even professional forecasters do little better than laypeople who guess randomly. What does this mean for investors?

XXX

Firstly, we should not make investments based on what we think may happen. A fall in property values may lead to a drop in the share price of a quality housebuilder, but we should not bank on the decline to continue in the hope of getting a better deal. We should use changes in macro-variables to our advantage, but never depend on them. Secondly, we should make sure that our portfolios are recession-proof by focusing on high-quality income stocks with solid cash flows. We cannot predict a bear market, but we can position ourselves in a way that minimises our losses if one does occur.

Specialise in something

Warren Buffett, considered to be the greatest value investor who ever lived, coined the term ‘circle of competence’ – the idea that you can only have a limited knowledge of anything, including companies. Accordingly, we should focus on a specific sector or industry, and search for bargains among businesses that we understand.

This is simpler than it looks. Investors already likely have a circle of competence. Peter Lynch, another famous value investor, is a great proponent of the idea that even non-professional investors have an ‘edge’ – something that gives them an advantage over the market average. For instance, a doctor may have special insight into biotechnology firms, a mechanic into automobile manufacturers, and so on. Don’t try to learn a little about a lot of companies – focus on learning a lot about a little.

Specialisation can also be extremely useful when looking for bargain companies in inefficient markets. A doctor’s ability to read scientific papers and evaluate medical research would give them a significant leg up when investing in early-stage biotech companies that might not be accessible even to professional money managers. Inefficient markets with high informational barriers and fewer investors will always have more mis-pricing than larger ones. 

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

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

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

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »