We have some exciting news to share! The Motley Fool UK has now become 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. We’ll be introducing a new name and brand over the coming weeks — we're very excited to share it with you and embark on this new chapter together!

3 ISA mistakes to avoid in a turbulent stock market

Christopher Ruane runs through a trio of potentially costly mistakes investors may make when managing their ISA as the stock market moves around.

| More on:

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.

ISA coins

Image source: Getty Images

When the stock market takes a dive it can make a lot of investors nervous. That is understandable — but there is a risk it leads them to make bad decisions. Here are three mistakes I try to avoid making with my Stocks and Shares ISA when the market gets rocky.

Selling shares just because of a price fall

There can be good reasons to sell shares in an ISA at any time, including during stock market turbulence. For example, during a financial crisis, bank shares may fall not just because the market is falling overall, but because the profit outlook for banks has crumbled and so they merit a lower valuation.

But it can be a mistake to sell a share just because its price is falling.

I try to invest in such a way that the money I get when I eventually sell a share and the dividends I have earned along the way will hopefully be much more than I paid. Share price movements in the meantime do not bother me. Unless I sell a share I do not lose money just because its price has fallen since I bought it.

Hunkering down instead of hunting for opportunities

A lot of investors get scared during market turbulence and decide to wait before things become calmer again before making any moves in their ISA.

That can be a mistake because of the opportunity cost it involves. During a rocky market there can be some real bargains on offer at prices that might not last for long.

As an example, cast your mind back to the 2020 stock market crash during the pandemic. A lot of blue-chip companies tumbled. If an investor had added Shell (LSE: SHEL) to their Stocks and Shares ISA five years ago, the investment would now be showing a 73% return even excluding dividends.

Adding dividends, things look even rosier. The current yield is 4.6%, so someone buying five years ago would now be earning a yield of around 8%.

That is despite a dividend cut along the way. That was a risk foreseeable during the pandemic, as uncertain fuel demand posed a risk to profits for the oil major.

A lot of the fear that drove down the share price at that time, such as a permanent loss of demand for fossil fuels, now looks overblown in retrospect. Shell has a powerful distribution network, long industry experience, and big reserves.

Market turbulence always throws up fear – and that can mean there are some real bargains on offer.

Ignoring the basics

But while the choice of shares in a portfolio is a key consideration when the market is down, it is not the only one.

An ISA’s long-term value creation comes from the performance of the shares in it, but also the ISA chosen. Providers impose differing costs and fees. Some may pay higher or lower interest on cash balances. Such factors can have a significant impact on long-term performance.

It is easy when markets wobble just to focus on shares. But, as always, it is worth making sure that you have the best Stocks and Shares ISA for your own situation.

C Ruane has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. 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

An Important Update From The Motley Fool UK

The future of Motley Fool UK is here.

Read more »

Passive income text with pin graph chart on business table
Investing Articles

Here’s how much to put in your ISA if you hope for passive income of £21,000

With a diversified portfolio of high quality shares and a disciplined investment mindset, Mark Hartley outlines his passive income strategy.

Read more »

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

Here’s how someone could start buying shares for the price of a weekend break

Is it really possible to start buying shares for the cost of a quick getaway? Our writer explains how it…

Read more »

Bus waiting in front of the London Stock Exchange on a sunny day.
Investing Articles

2 top growth shares to consider on the London Stock Exchange

There are plenty of UK stocks to buy that have potential long runways of growth. Here, our writer highlights two…

Read more »

Smiling white woman holding iPhone with Airpods in ear
Investing Articles

£20k invested in a Stocks and Shares ISA this time last year is now worth…

What has 12 months meant for the value of a Stocks and Shares ISA? That depends on how it has…

Read more »

The flag of the United States of America flying in front of the Capitol building
Investing Articles

While everyone’s piling into AI infrastructure stocks like Micron and SanDisk, consider these out-of-favour Nasdaq 100 names

There’s very little interest in these Nasdaq-listed AI stocks right now despite the fact they’re generating impressive growth. Could this…

Read more »

Workers at Whiting refinery, US
Dividend Shares

Here’s why 2026 has been bumpy for the BP share price

The BP share price has had a good 2026, rising 24% so far. However, ever since the US attacked Iran…

Read more »

A beach at sunset where there is an inscription on the sand "Breathe Deeeply".
Investing Articles

How oil price volatility is impacting stock market sentiment — and how to prepare

As the Middle East crisis deepens, oil price shocks are sending ripples through global stock markets. Mark Hartley considers a…

Read more »