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.

Should I aim for a million by holding just 10 shares?

Can Harvey Jones aim for a million in his ISA pot by investing in a broad-based portfolio of around 20 FTSE 100 shares, or should he narrow his stock picks?

| More on:
Mature black woman at home texting on her cell phone while sitting on the couch

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.

Private investors can realistically aim for a million in their retirement portfolio. Thousands have done just that in a Stocks and Shares ISA, which was only launched in 1999.

So it can be done in 25 years – well under the typical working lifetime – and probably faster than that with the ISA allowance now £20,000 a year. By generating the average annual FTSE 100 total return of 7% a year, it can be done in just over 21 years.

XXX

If I increased my annual return to 10% a year through individual stock picking, I’d get there in just 18 years. But how do I achieve that?

Today, I have a diversified portfolio of around 20 stocks, mostly culled from the FTSE 100. I also have a handful of exchange traded funds tracking the US S&P 500, US smaller companies and global technology stocks.

I’d like to beat the FTSE 100 index

But let’s leave the trackers out of it for now. They’re just ticking away, giving me exposure to global markets I don’t understand as well.

I worry 20 stocks is too many. Especially when I remember what billionaire investor Warren Buffett said about diversification. He called it “protection against ignorance”

Buffett added: “It makes little sense if you know what you’re doing.” Ouch! Buffett’s spot on, of course. Compared to him, I’ve no idea. So should I educate myself and boil my 20 down to just 10 of my best ideas?

Even Buffett hasn’t gone that far. His Berkshire Hathaway vehicle holds more than 70 stocks. Although with $1.147trn under management rather than my pittance, it has no choice.

So I’m looking at my portfolio, wondering which ones to cull. Pharmaceutical stock GSK (LSE: GSK) leaps out. This is because it raises some difficult questions.

Could GSK shares help me make a million?

If I’d started with the aim of buying just 10 stocks, GSK would have been on the list. It’s a solid dividend growth stock with defensive capabilities. Healthcare stocks are thought to hold their own in a recession, as people still fall ill (possibly more so).

I bought GSK shares in March and June, thinking they looked great value. Personally, I’m down 19.52%. It’s the biggest disappointment in my portfolio. Over 12 months, the GSK share price is down 6.82%.

GSK was hit by a massive class action claim over its withdrawn cancer treatment Zantac. That was (largely) settled at the cost of £2.2bn in October, but the relief rally didn’t last long. Investors are now worried about President-elect Donald Trump’s plans for big pharma.

I can soothe myself by celebrating my winners instead. But if GSK was a 10th of my total wealth, I might do something panicky like sell and crystallise that loss.

Diversification gives me the confidence to wait for GSK to recover. So it has an important role to play. Buffett’s right, diversification is protection against ignorance. But until I know everything (ie never), I’ll keep spreading my risk.

I might thin down my 20 stocks but I doubt I’ll ever get it down to 10, or even 15. But I still expect to beat the FTSE 100 as a whole and turbo-charge my returns.

Harvey Jones has positions in GSK. The Motley Fool UK has recommended GSK. 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 »