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.

After 20 years of buying stocks, here are my top stock market investing tips

Edward Sheldon has been investing in stocks for 20 years and, in that time, has experienced (and learnt) a lot. Here are his top stock market tips today.

You’re reading a free article with opinions that may differ from The Twelfth Magpie’s Premium Investing Services. Become a member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn more, and get a free 'Best Buy Now' stock!.

A little over 20 years ago, I bought my first stock. Since then, I’ve experienced (and learnt) a lot. Ultimately, this experience has made me a much better investor. Today, I have far more success investing than I used to.

I’m not perfect and success isn’t guaranteed. But in this article, I’m going to share some of my top stock market investing tips. Hopefully, these tips can help investors avoid some of the mistakes I’ve made over the last two decades and get on the path to greater investment success.

Should you buy Rolls Royce shares today?

Before you decide, please take a moment to review this report first. Despite ongoing uncertainties from US tariffs to global conflicts, Mark Rogers and his team believe many UK shares still trade at substantial discounts, offering savvy investors plenty of potential opportunities to learn about.

That’s why this could be an ideal time to secure this valuable research – Mark’s analysts have scoured the markets to reveal 5 of his favourite long-term ‘Buys’. Please, don’t make any big decisions before seeing them.

Owning 20+ stocks

One of the most important things I’ve learnt over the years is that risk management is vital. It’s crucial to limit big losses because they can really set me back.

One of the easiest ways to reduce risk is to build a diversified portfolio containing many (20+) stocks. If one or two stocks in the portfolio underperform, I can still have success overall.

Thinking about portfolio construction

Portfolio construction is also very important. Here, it’s a good idea to think about both risk and return and allocate capital to stocks accordingly.

It’s generally not a good idea to take large bets on higher-risk, speculative stocks. These kinds of stocks can play a valuable role in a portfolio. However, they should be smaller holdings so that risk is minimised.

Investing globally

The UK has some great companies. However, many of the world’s most dominant companies (Apple, Amazon, etc) are listed overseas. Building a global portfolio is a good idea, in my view. Not only can this approach potentially enhance my returns, but it can also reduce risk.

Investing in high-quality companies

One thing I’m increasingly realising is that investing doesn’t need to be complicated. Invest in great companies at a reasonable price and hold for the long term and I hope to do pretty well.

Great companies come in different shapes and sizes but, in general, they have a few things in common:

  • A fantastic product or service

  • A competitive advantage

  • Strong long-term growth potential

  • A strong balance sheet

  • A high level of profitability

Looking at ROCE

If I had to pick one metric to focus on however, it would be return on capital employed (ROCE). This is a measure of how profitable a company is. It tells us the amount of profit a company is generating per £1 of capital employed. It’s calculated by dividing operating earnings by capital employed.

The reason this metric is important is that companies with a high ROCE tend to get much bigger over time because they’re earning large profits. And companies that get much bigger over time tend to be good long-term investments.

Don’t stress about valuation

Valuations are important in investing. However, they’re not the be-all and end-all. One thing I’ve learnt over the years is that it’s not a good idea to buy a stock just because it’s cheap. Often, cheap stocks are cheap for a reason (and end up get cheaper).

Similarly, it’s not a good idea to ignore a stock just because it’s a little bit expensive. Many of my best investments have been stocks that were a little bit expensive when I bought them.

The bottom line is that often the best companies have higher valuations, simply because everyone knows they’re great companies worth investing in.

Edward Sheldon owns shares in Apple and Amazon. John Mackey, CEO of Whole Foods Market, an Amazon subsidiary, is a member of The Motley Fool’s board of directors. The Motley Fool UK owns shares of and has recommended Amazon and Apple and recommends the following options: long January 2022 $1920 calls on Amazon, short March 2023 $130 calls on Apple, short January 2022 $1940 calls on Amazon, and long March 2023 $120 calls on Apple. 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

Here’s why Babcock and BAE Systems shares got a Burnham boost today

New PM Andy Burnham has announced his cabinet and defence stocks are rising. But where have I got my money:…

Read more »

Investing Articles

3 under-the-radar UK growth shares that are quietly beating the S&P 500 in 2026

Our writer highlights three British growth shares that have made spectacular gains this year, while everyone was distracted by AI…

Read more »

Close-up image depicting a woman in her 70s taking British bank notes from her colourful leather wallet.
Investing Articles

Here’s the passive income 1,000 Greggs shares could deliver per year

This writer plans to hang onto his Greggs shares because he thinks they are undervalued. But he also likes the…

Read more »

A row of satellite radars at night
Investing Articles

This ex-penny stock has crushed Rolls-Royce shares over 5 years! Is there more to come?

With all eyes on Rolls-Royce shares, this growth share with a connection to SpaceX might have gone unnoticed by a…

Read more »

Close-up as a woman counts out modern British banknotes.
Investing Articles

With a 6.4% yield and P/E of 10 is this FTSE dividend stock a hidden passive income gem?

Building a portfolio of solid UK dividend stocks isn't hard. Paul Summers takes a closer look at one high-yielding candidate…

Read more »

Black woman using smartphone at home, watching stock charts.
Growth Shares

At 112p, where next for the Lloyds share price? 168p or 56p?

Jon Smith mulls over the direction going forward for the Lloyds share price, and explains why two very different scenarios…

Read more »

Investing Articles

This dividend stock has a 7.3% yield, and Stocks and Shares ISA investors are buying!

Looking to move from a Cash ISA to a Stocks and Shares ISA to target passive income? Alan Oscroft has…

Read more »

Surprised Black girl holding teddy bear toy on Christmas
Investing Articles

Could Rolls-Royce shares lock in another 34% gain before Christmas?

Mark Hartley takes a look at some of the more optimistic price targets for Rolls-Royce, and considers a best-case scenario.…

Read more »