How to invest a Stocks and Shares ISA like a pro

Looking to generate strong returns in a Stocks and Shares ISA? It could be worth embracing some strategies that are used by professional money managers.

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.

Smartly dressed middle-aged black gentleman working at his desk

Image source: Getty Images

Professional investors don’t always generate huge returns. However, generally speaking, they tend to generate much higher long-term returns than retail investors do (studies have shown that many retail investors make less than 5% per year on average).

The good news is that, thanks to advances in technology, anyone can invest like a pro today. With that in mind, here’s how to invest a Stocks and Shares ISA like one.

Pros like high-quality stocks

Professional investors like to invest in high-quality companies.

I’m talking about companies that are growing, are highly profitable, and have strong balance sheets (a good example here is tech giant Microsoft).

Why do they like to invest in these kinds of companies? Because these businesses tend to be more stable investments. And for a professional investor, stability is crucial. For a start, these investors are in charge of managing other people’s money, so it’s imperative that they don’t rack up large losses. Secondly, they could lose their jobs if their investment performance is poor.

Of course, valuation is often an important factor for professionals. So, they’ll often wait patiently until a stock’s valuation is reasonable (not necessarily low) before investing in it.

Managing risk

Once they’ve identified a number of high-quality companies trading at reasonable valuations, pros will diversify their capital across a range of securities to minimise stock-specific risk.

Now, there’s no exact number of stocks one needs to have to be well diversified. But you rarely see a professional investor who owns less than 20 stocks in their portfolio (many prefer to own 40-60). By owning 20 stocks or more, one can reduce their stock-specific risk significantly.

When diversifying, they will pick stocks from different sectors (and different countries if they’re managing a global portfolio). This will help to reduce risk further.

Most professionals don’t allocate the same amount of capital to every stock in their portfolio, however. Instead, they will ‘right size’ their positions.

What I mean by this is that they’ll allocate more money to lower-risk stocks and less money to higher-risk stocks.

This is another classic risk management strategy. And it can help investors avoid big losses.

I think right-sizing is a key reason pros tend to outperform retail investors. Quite often, you see retail investors with portfolios that are heavily skewed towards more speculative stocks. Most professionals would never do this, as they know it’s too risky.

Taking a long-term view

Now, professional investors often hold on to their high-quality stocks for the long run (they understand that winning companies can keep winning for decades). However, they may engage in some tactical trading at times. If a stock gets a little expensive, they might take a little profit off the table. Conversely, if the stock becomes cheap, they might buy some more of it.

Finally, pros tend to remain invested throughout market cycles and volatility. That’s because they understand that time in the market is more important than timing the market.

Edward Sheldon has positions in Microsoft. The Motley Fool UK has recommended Microsoft. 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

Black woman using smartphone at home, watching stock charts.
Investing Articles

£5,000 invested in BAE Systems shares a month ago is now worth…

BAE Systems shares have been among the FTSE 100's best performers in recent years. The question is, can the defence…

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

Here’s how a £20k ISA could generate £7,875 in monthly passive income

Have £20,000 ready to invest? Royston Wild explains how you could put this in a Stocks and Shares ISA to…

Read more »

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop
Investing Articles

By April 2027, £2,630 invested in Barclays shares could be worth…

Barclays shares have been flying. But what might happen to a chunk of money invested in the bank's stock over…

Read more »

Satellite on planet background
Investing Articles

MTI Wireless Edge: the 61p defence penny stock that’s delivered 10x the return of Rolls-Royce shares in 2026

Edward Sheldon has spotted a penny stock in the defence space that offers growth, value, dividend income, and share price…

Read more »

Happy woman commuting on a train and checking her mobile phone while using headphones
Investing For Beginners

Is this the biggest bargain in the FTSE 100 right now?

Jon Smith reviews a FTSE 100 stock that's fallen by 18% so far this year that he believes could be…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Will Rolls-Royce shares soar to £17.40 or sink to 900p?

Rolls-Royce shares have surged almost 90% in value over the last 12 months. Can the FTSE 100 company repeat the…

Read more »

A quiet morning and an empty Victoria Street in Edinburgh's historic Old Town.
Investing Articles

£10,000 invested in Scottish Mortgage shares 5 weeks ago is now worth…

Why have Scottish Mortgage shares displayed resilience in the FTSE 100 index since the war in Iran started a few…

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

How can I target £14,132 a year in dividend income from a £20,000 holding in this FTSE 250 dividend gem?

This FTSE 250 dividend heavyweight keeps generating market-beating yields, with forecasts of more to come as earnings momentum continues to…

Read more »