Why avoiding this mistake could improve your chances of making a million

Through diversifying across a range of stocks, you could improve the risk/reward ratio of your portfolio.

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.

While making a million from investing in the stock market is an achievable goal for most investors, there are numerous pitfalls that could derail your progress.

Among them is failing to diversify across a range of companies that operate in varied sectors and geographies. This leads to concentration risk, with the impact of one company’s poor performance on the wider portfolio being high.

As such, ensuring that your portfolio is sufficiently diversified to withstand potential challenges across industries and geographies could lead to a larger nest egg in the long run.

Company-specific risk

Although it is not possible to diversify away the potential for the stock market to decline, reducing the impact of company-specific risk is very simple for any investor to achieve. Every additional company held within a portfolio reduces the impact of any one single stock’s poor performance on the value of the wider portfolio. While the marginal benefit of additional holdings will decrease as their number rises, having 20-30 stocks within a portfolio could provide a balance between risk reduction and having the opportunity to beat the wider index.

Reducing company-specific risk is crucial for all investors because it is impossible to only buy stocks that rise in perpetuity. Even the very best investors, such as Warren Buffett, make mistakes every so often in terms of the companies they buy. For example, a business may suffer from the emergence of a new entrant, or its growth strategy may fall flat. For an investor who has a concentrated portfolio, this can present a significant problem for the wider portfolio’s valuation. An investor who has a diverse range of companies is unlikely to suffer to the same degree.

Broader diversification

Simply having a large number of stocks in a portfolio may not be the right means of reducing overall risk. In fact, it may be more prudent to focus on the types of companies in your portfolio, as well as their industries and geographies, in addition to having a sufficiently large number of stocks.

For example, owning growth companies that all operate in the industrials sector in the UK may mean that a portfolio is highly exposed to a UK economic slowdown. It may be more prudent to instead have some defensive stocks, as well as companies that operate in a variety of regions and sectors. This may not only reduce risk, but allow you to access faster growth rates that could be produced by different industries and economies.

Takeaway

While it is tempting to focus your capital on the best stocks you can find, the reality is that all companies can experience difficult periods that lead to declines in their stock prices. As such, by diversifying, you can reduce risk and boost your return prospects over the long run. This could improve your chances of making a million.

More on Investing Articles

Artillery rocket system aimed to the sky and soldiers at sunset.
Investing Articles

Will we see a catastrophic stock market crash next week?

Harvey Jones examines how investors should respond to the current uncertainty, and urges investors to stay calm even if the…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

Down 15% in a month! The Barclays share price looks like a screaming buy for me

Harvey Jones has had his eyes on the Barclays share price for ages. As markets plunge, this may be his…

Read more »

Concept of two young professional men looking at a screen in a technological data centre
Investing Articles

Here’s why I’m betting big on these 2 FTSE 100 stocks in the age of AI

This pair of FTSE 100 stocks couldn't be more different. So why are they big positions in my Stocks and…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

Is last week’s dip in the Rolls-Royce share price a brilliant buying opportunity?

Even the Rolls-Royce share price can't shake off current stock market turmoil, but Harvey Jones says the FTSE 100 stock…

Read more »

Senior Adult Black Female Tourist Admiring London
Investing Articles

Does the Lloyds share price suddenly look like a bargain again?

After a brilliant run the Lloyds share price was starting to look a little overstretched, says Harvey Jones. But does…

Read more »

British pound data
Investing Articles

It’s time to prepare for a stock market crash

Edward Sheldon expects the stock market to keep rising in 2026. However, looking further out, he sees the potential for…

Read more »

DIVIDEND YIELD text written on a notebook with chart
Investing Articles

£5,000 buys 1,938 shares in this 8.4%-yielding passive income stock!

An investment of £5,000 in this amazing passive income stock could generate £422 in dividends this year. And things could…

Read more »

Night Takeoff Of The American Space Shuttle
Investing Articles

A red-hot UK growth name to consider buying in a Stocks and Shares ISA

With exposure to data centres, defence, and nuclear power, is Avingtrans an under-the-radar steal for a Stocks and Shares ISA?

Read more »