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!

As share prices fluctuate should I buy or sell stocks?

2020 has been a wild ride for share prices and it can be hard to know when it’s a good time to buy or sell stocks. Having a clear investing strategy can help.

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.

2020 has been an unexpected year and utterly bewildering for the financial markets. The March market crash caused panic all round. But government stimulus and a strong desire to invest has driven some share prices to record highs and others to dire lows. So how do you decide whether it’s a good time to buy or sell shares?

When is a good time to buy shares?

As a long-term investor, timing when to buy or sell is less important than if you’re day trading. Nevertheless, it’s still important to watch how a company is performing now and if it’s likely to prosper in the future.

In a downturn, growth slows and uncertainty prevails, resulting in high volatility in the markets. As we’ve seen this year, it leads to quality stocks becoming overvalued and riskier stocks losing out altogether. To prepare for this, I think you should look for value, quality, and stocks that ordinarily experience low volatility, such as those bigger names in the FTSE 100.

A market crash is a great time to buy because share prices are low. But it can disconcert being the buyer, when everyone around you is panicking and preparing to sell. Today, many of the companies that lost value in March have rebounded spectacularly and may now be overvalued. This means they could tumble in the event of another market crash. However, if you’re planning on holding for many years (I think that’s the best plan) then timing is less important.

Examples that I’d add to a long-term portfolio are Rentokil Initial, BAE Systems, and Tate & Lyle. These are well-established companies I believe will still operate in many years to come. I also like AstraZeneca and Spirax Sarco, but both have very high price-to-earnings ratios. This indicates they’re overvalued, so I’ll keep an eye on them to buy in a dip.

Arrow descending on a graph portraying stock market crash

As a long-term investor, when is a good time to sell?

When preparing for a downturn, it may be tempting to sell every stock in your portfolio. Considering the endless doomsday predictions in the media, you’d be forgiven for letting panic set in. But I don’t think a complete sell-out is ever a wise idea. Deciding when to sell isn’t easy, but I believe it’s sometimes sensible to sell stocks.

If you invest in a company you think will grow, keep your investment until you assume it’s grown as far as it can. If you no longer believe it can continue to grow, then that could be a sensible time to sell. The same stands if you invest for dividends and the company then cancels the dividend.

This year has seen an unprecedented number of companies cancel dividends, and I don’t think it would’ve been wise to sell your shares in all of them for this reason alone. Many are trying to save money to see them through the crisis and will reinstate their dividends in time (plumbing supplies firm Ferguson did so this week). However, if you’ve already realised profits and it would give you peace of mind to sell, then by all means that’s an equally sensible decision.

Having a clear investing strategy will go a long way to building your wealth. As share prices fluctuate, your strategy will help you buy or sell your stocks in line with dips and peaks.

Kirsteen owns shares of BAE Systems. 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

Close-up image depicting a woman in her 70s taking British bank notes from her colourful leather wallet.
Investing For Beginners

This value stock could turn £2k into £2,860 this year

Jon Smith points out a value stock that has been hit hard by the Middle East conflict, but he thinks…

Read more »

Runner standing at the starting point with 2025 year for starting in new year 2025 to achieve business planing and success concept.
Value Shares

Thank goodness I didn’t buy Greggs shares in 2025

Greggs was a very popular stock in the early days of 2025. Our author takes a look at his decision…

Read more »

Renewable energies concept collage
Investing Articles

Legal & General shares: still seen as a dividend stock — but that may be outdated

Andrew Mackie looks past the high yield in Legal & General shares to question whether the market is missing its…

Read more »

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

13,000 more reasons why I’m avoiding IAG shares!

International Consolidated Airlines (IAG) shares are rallying again. But Royston Wild explains why he's still avoiding the volatile FTSE 100…

Read more »

Two mid adult women enjoying a friends reunion city break for the weekend in Newcastle upon Tyne, England.
Investing Articles

This FTSE 250 stock fell by over 3% after solid earnings. Should investors consider buying it?

Trainline’s share price fell this morning, even after publishing solid results for FY26. Should investors consider scooping up some of…

Read more »

Road trip. Father and son travelling together by car
Investing Articles

£10,007 invested in Aston Martin shares on 1 April is now worth…

Aston Martin shares have suddenly started moving upwards, going from 36p to 46p. Is this FTSE 250 stock ready to…

Read more »

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

Why NOW could be the best time to find stocks to buy!

I'm looking for more stocks to buy for my ISA and SIPPs. But it's possible some shares could be better…

Read more »

Trader on video call from his home office
Investing Articles

£1,000 buys 297 shares in this beaten-down UK housebuilder with a £700m opportunity

Shares in UK builders have crashed recently. But is the stock market focusing on short-term challenges and missing a massive…

Read more »