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.

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.

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.

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

Two white male workmen working on site at an oil rig
Dividend Shares

More oil wobbles as the BP share price dives 7% in a day!

The BP share price has been wildly volatile in 2026, bouncing around with each new move in the US-Iran war.…

Read more »

British bank notes and coins
Investing Articles

Meet the 9.6%-yielding income share that could keep growing its payout!

This income share yields close to 10% -- and has grown its dividend per share year after year for well…

Read more »

Fireworks display in the shape of willow at Newcastle, Co. Down , Northern Ireland at Halloween.
Investing Articles

When will Barclays shares hit £10?

Barclays shares were close to £1 not so long ago, but could they do the unthinkable and make it to…

Read more »

Picture of an easyJet plane taking off.
Investing Articles

easyJet shares have bounced back before. On a P/E ratio of 6, could they do it again?

Our writer thinks easyJet shares could turn out to be a terrific bargain from a long-term perspective. So is he…

Read more »

Stack of British pound coins falling on list of share prices
Investing Articles

Could National Grid shares offer me a dividend that won’t be hurt by inflation?

National Grid aims to inflation-proof its dividend per share with a policy of annual rises that match inflation. Is our…

Read more »

Young female business analyst looking at a graph chart while working from home
Investing Articles

Here’s what happened to £1,000 invested in the past 2 stock market crashes

History may not repeat itself, but our writer reckons there are lessons to be learned from what recent stock market…

Read more »

Young Caucasian woman at the street withdrawing money at the ATM
Investing Articles

Here’s how the HSBC share price reached an all-time high… and what might be next

HSBC’s record share price reflects a strong rebound in profits and investor confidence, but future gains may be bumpier from…

Read more »

UK coloured flags waving above large crowd on a stadium sport match.
Investing Articles

Investors tempted by beaten-down Diageo shares should mark 6 May on their calendars now

Diageo is a top British blue-chip but its shares have come under fire in recent years. Harvey Jones hopes investors…

Read more »